| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.preference; |
| |
| import android.animation.LayoutTransition; |
| import android.annotation.Nullable; |
| import android.annotation.StringRes; |
| import android.annotation.XmlRes; |
| import android.app.Fragment; |
| import android.app.FragmentBreadCrumbs; |
| import android.app.FragmentManager; |
| import android.app.FragmentTransaction; |
| import android.app.ListActivity; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.content.res.TypedArray; |
| import android.content.res.XmlResourceParser; |
| import android.os.Build; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.text.TextUtils; |
| import android.util.AttributeSet; |
| import android.util.TypedValue; |
| import android.util.Xml; |
| import android.view.LayoutInflater; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.view.ViewGroup; |
| import android.widget.AbsListView; |
| import android.widget.ArrayAdapter; |
| import android.widget.BaseAdapter; |
| import android.widget.Button; |
| import android.widget.FrameLayout; |
| import android.widget.ImageView; |
| import android.widget.ListView; |
| import android.widget.TextView; |
| |
| import com.android.internal.util.XmlUtils; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * This is the base class for an activity to show a hierarchy of preferences |
| * to the user. Prior to {@link android.os.Build.VERSION_CODES#HONEYCOMB} |
| * this class only allowed the display of a single set of preference; this |
| * functionality should now be found in the new {@link PreferenceFragment} |
| * class. If you are using PreferenceActivity in its old mode, the documentation |
| * there applies to the deprecated APIs here. |
| * |
| * <p>This activity shows one or more headers of preferences, each of which |
| * is associated with a {@link PreferenceFragment} to display the preferences |
| * of that header. The actual layout and display of these associations can |
| * however vary; currently there are two major approaches it may take: |
| * |
| * <ul> |
| * <li>On a small screen it may display only the headers as a single list when first launched. |
| * Selecting one of the header items will only show the PreferenceFragment of that header (on |
| * Android N and lower a new Activity is launched). |
| * <li>On a large screen it may display both the headers and current PreferenceFragment together as |
| * panes. Selecting a header item switches to showing the correct PreferenceFragment for that item. |
| * </ul> |
| * |
| * <p>Subclasses of PreferenceActivity should implement |
| * {@link #onBuildHeaders} to populate the header list with the desired |
| * items. Doing this implicitly switches the class into its new "headers |
| * + fragments" mode rather than the old style of just showing a single |
| * preferences list. |
| * |
| * <div class="special reference"> |
| * <h3>Developer Guides</h3> |
| * <p>For information about using {@code PreferenceActivity}, |
| * read the <a href="{@docRoot}guide/topics/ui/settings.html">Settings</a> |
| * guide.</p> |
| * </div> |
| * |
| * @deprecated Use the <a href="{@docRoot}jetpack/androidx.html">AndroidX</a> |
| * <a href="{@docRoot}reference/androidx/preference/package-summary.html"> |
| * Preference Library</a> for consistent behavior across all devices. For more information on |
| * using the AndroidX Preference Library see |
| * <a href="{@docRoot}guide/topics/ui/settings.html">Settings</a>. |
| */ |
| @Deprecated |
| public abstract class PreferenceActivity extends ListActivity implements |
| PreferenceManager.OnPreferenceTreeClickListener, |
| PreferenceFragment.OnPreferenceStartFragmentCallback { |
| |
| private static final String TAG = "PreferenceActivity"; |
| |
| // Constants for state save/restore |
| private static final String HEADERS_TAG = ":android:headers"; |
| private static final String CUR_HEADER_TAG = ":android:cur_header"; |
| private static final String PREFERENCES_TAG = ":android:preferences"; |
| |
| /** |
| * When starting this activity, the invoking Intent can contain this extra |
| * string to specify which fragment should be initially displayed. |
| * <p/>Starting from Key Lime Pie, when this argument is passed in, the PreferenceActivity |
| * will call isValidFragment() to confirm that the fragment class name is valid for this |
| * activity. |
| */ |
| public static final String EXTRA_SHOW_FRAGMENT = ":android:show_fragment"; |
| |
| /** |
| * When starting this activity and using {@link #EXTRA_SHOW_FRAGMENT}, |
| * this extra can also be specified to supply a Bundle of arguments to pass |
| * to that fragment when it is instantiated during the initial creation |
| * of PreferenceActivity. |
| */ |
| public static final String EXTRA_SHOW_FRAGMENT_ARGUMENTS = ":android:show_fragment_args"; |
| |
| /** |
| * When starting this activity and using {@link #EXTRA_SHOW_FRAGMENT}, |
| * this extra can also be specify to supply the title to be shown for |
| * that fragment. |
| */ |
| public static final String EXTRA_SHOW_FRAGMENT_TITLE = ":android:show_fragment_title"; |
| |
| /** |
| * When starting this activity and using {@link #EXTRA_SHOW_FRAGMENT}, |
| * this extra can also be specify to supply the short title to be shown for |
| * that fragment. |
| */ |
| public static final String EXTRA_SHOW_FRAGMENT_SHORT_TITLE |
| = ":android:show_fragment_short_title"; |
| |
| /** |
| * When starting this activity, the invoking Intent can contain this extra |
| * boolean that the header list should not be displayed. This is most often |
| * used in conjunction with {@link #EXTRA_SHOW_FRAGMENT} to launch |
| * the activity to display a specific fragment that the user has navigated |
| * to. |
| */ |
| public static final String EXTRA_NO_HEADERS = ":android:no_headers"; |
| |
| private static final String BACK_STACK_PREFS = ":android:prefs"; |
| |
| // extras that allow any preference activity to be launched as part of a wizard |
| |
| // show Back and Next buttons? takes boolean parameter |
| // Back will then return RESULT_CANCELED and Next RESULT_OK |
| private static final String EXTRA_PREFS_SHOW_BUTTON_BAR = "extra_prefs_show_button_bar"; |
| |
| // add a Skip button? |
| private static final String EXTRA_PREFS_SHOW_SKIP = "extra_prefs_show_skip"; |
| |
| // specify custom text for the Back or Next buttons, or cause a button to not appear |
| // at all by setting it to null |
| private static final String EXTRA_PREFS_SET_NEXT_TEXT = "extra_prefs_set_next_text"; |
| private static final String EXTRA_PREFS_SET_BACK_TEXT = "extra_prefs_set_back_text"; |
| |
| // --- State for new mode when showing a list of headers + prefs fragment |
| |
| private final ArrayList<Header> mHeaders = new ArrayList<Header>(); |
| |
| private FrameLayout mListFooter; |
| |
| @UnsupportedAppUsage |
| private ViewGroup mPrefsContainer; |
| |
| // Backup of the original activity title. This is used when navigating back to the headers list |
| // in onBackPress to restore the title. |
| private CharSequence mActivityTitle; |
| |
| // Null if in legacy mode. |
| private ViewGroup mHeadersContainer; |
| |
| private FragmentBreadCrumbs mFragmentBreadCrumbs; |
| |
| private boolean mSinglePane; |
| |
| private Header mCurHeader; |
| |
| // --- State for old mode when showing a single preference list |
| |
| @UnsupportedAppUsage |
| private PreferenceManager mPreferenceManager; |
| |
| private Bundle mSavedInstanceState; |
| |
| // --- Common state |
| |
| private Button mNextButton; |
| |
| private int mPreferenceHeaderItemResId = 0; |
| private boolean mPreferenceHeaderRemoveEmptyIcon = false; |
| |
| /** |
| * The starting request code given out to preference framework. |
| */ |
| private static final int FIRST_REQUEST_CODE = 100; |
| |
| private static final int MSG_BIND_PREFERENCES = 1; |
| private static final int MSG_BUILD_HEADERS = 2; |
| private Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_BIND_PREFERENCES: { |
| bindPreferences(); |
| } break; |
| case MSG_BUILD_HEADERS: { |
| ArrayList<Header> oldHeaders = new ArrayList<Header>(mHeaders); |
| mHeaders.clear(); |
| onBuildHeaders(mHeaders); |
| if (mAdapter instanceof BaseAdapter) { |
| ((BaseAdapter) mAdapter).notifyDataSetChanged(); |
| } |
| Header header = onGetNewHeader(); |
| if (header != null && header.fragment != null) { |
| Header mappedHeader = findBestMatchingHeader(header, oldHeaders); |
| if (mappedHeader == null || mCurHeader != mappedHeader) { |
| switchToHeader(header); |
| } |
| } else if (mCurHeader != null) { |
| Header mappedHeader = findBestMatchingHeader(mCurHeader, mHeaders); |
| if (mappedHeader != null) { |
| setSelectedHeader(mappedHeader); |
| } |
| } |
| } break; |
| } |
| } |
| }; |
| |
| private static class HeaderAdapter extends ArrayAdapter<Header> { |
| private static class HeaderViewHolder { |
| ImageView icon; |
| TextView title; |
| TextView summary; |
| } |
| |
| private LayoutInflater mInflater; |
| private int mLayoutResId; |
| private boolean mRemoveIconIfEmpty; |
| |
| public HeaderAdapter(Context context, List<Header> objects, int layoutResId, |
| boolean removeIconBehavior) { |
| super(context, 0, objects); |
| mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| mLayoutResId = layoutResId; |
| mRemoveIconIfEmpty = removeIconBehavior; |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| HeaderViewHolder holder; |
| View view; |
| |
| if (convertView == null) { |
| view = mInflater.inflate(mLayoutResId, parent, false); |
| holder = new HeaderViewHolder(); |
| holder.icon = (ImageView) view.findViewById(com.android.internal.R.id.icon); |
| holder.title = (TextView) view.findViewById(com.android.internal.R.id.title); |
| holder.summary = (TextView) view.findViewById(com.android.internal.R.id.summary); |
| view.setTag(holder); |
| } else { |
| view = convertView; |
| holder = (HeaderViewHolder) view.getTag(); |
| } |
| |
| // All view fields must be updated every time, because the view may be recycled |
| Header header = getItem(position); |
| if (mRemoveIconIfEmpty) { |
| if (header.iconRes == 0) { |
| holder.icon.setVisibility(View.GONE); |
| } else { |
| holder.icon.setVisibility(View.VISIBLE); |
| holder.icon.setImageResource(header.iconRes); |
| } |
| } else { |
| holder.icon.setImageResource(header.iconRes); |
| } |
| holder.title.setText(header.getTitle(getContext().getResources())); |
| CharSequence summary = header.getSummary(getContext().getResources()); |
| if (!TextUtils.isEmpty(summary)) { |
| holder.summary.setVisibility(View.VISIBLE); |
| holder.summary.setText(summary); |
| } else { |
| holder.summary.setVisibility(View.GONE); |
| } |
| |
| return view; |
| } |
| } |
| |
| /** |
| * Default value for {@link Header#id Header.id} indicating that no |
| * identifier value is set. All other values (including those below -1) |
| * are valid. |
| */ |
| public static final long HEADER_ID_UNDEFINED = -1; |
| |
| /** |
| * Description of a single Header item that the user can select. |
| * |
| * @deprecated Use the <a href="{@docRoot}jetpack/androidx.html">AndroidX</a> |
| * <a href="{@docRoot}reference/androidx/preference/package-summary.html"> |
| * Preference Library</a> for consistent behavior across all devices. |
| * For more information on using the AndroidX Preference Library see |
| * <a href="{@docRoot}guide/topics/ui/settings.html">Settings</a>. |
| */ |
| @Deprecated |
| public static final class Header implements Parcelable { |
| /** |
| * Identifier for this header, to correlate with a new list when |
| * it is updated. The default value is |
| * {@link PreferenceActivity#HEADER_ID_UNDEFINED}, meaning no id. |
| * @attr ref android.R.styleable#PreferenceHeader_id |
| */ |
| public long id = HEADER_ID_UNDEFINED; |
| |
| /** |
| * Resource ID of title of the header that is shown to the user. |
| * @attr ref android.R.styleable#PreferenceHeader_title |
| */ |
| @StringRes |
| public int titleRes; |
| |
| /** |
| * Title of the header that is shown to the user. |
| * @attr ref android.R.styleable#PreferenceHeader_title |
| */ |
| public CharSequence title; |
| |
| /** |
| * Resource ID of optional summary describing what this header controls. |
| * @attr ref android.R.styleable#PreferenceHeader_summary |
| */ |
| @StringRes |
| public int summaryRes; |
| |
| /** |
| * Optional summary describing what this header controls. |
| * @attr ref android.R.styleable#PreferenceHeader_summary |
| */ |
| public CharSequence summary; |
| |
| /** |
| * Resource ID of optional text to show as the title in the bread crumb. |
| * @attr ref android.R.styleable#PreferenceHeader_breadCrumbTitle |
| */ |
| @StringRes |
| public int breadCrumbTitleRes; |
| |
| /** |
| * Optional text to show as the title in the bread crumb. |
| * @attr ref android.R.styleable#PreferenceHeader_breadCrumbTitle |
| */ |
| public CharSequence breadCrumbTitle; |
| |
| /** |
| * Resource ID of optional text to show as the short title in the bread crumb. |
| * @attr ref android.R.styleable#PreferenceHeader_breadCrumbShortTitle |
| */ |
| @StringRes |
| public int breadCrumbShortTitleRes; |
| |
| /** |
| * Optional text to show as the short title in the bread crumb. |
| * @attr ref android.R.styleable#PreferenceHeader_breadCrumbShortTitle |
| */ |
| public CharSequence breadCrumbShortTitle; |
| |
| /** |
| * Optional icon resource to show for this header. |
| * @attr ref android.R.styleable#PreferenceHeader_icon |
| */ |
| public int iconRes; |
| |
| /** |
| * Full class name of the fragment to display when this header is |
| * selected. |
| * @attr ref android.R.styleable#PreferenceHeader_fragment |
| */ |
| public String fragment; |
| |
| /** |
| * Optional arguments to supply to the fragment when it is |
| * instantiated. |
| */ |
| public Bundle fragmentArguments; |
| |
| /** |
| * Intent to launch when the preference is selected. |
| */ |
| public Intent intent; |
| |
| /** |
| * Optional additional data for use by subclasses of PreferenceActivity. |
| */ |
| public Bundle extras; |
| |
| public Header() { |
| // Empty |
| } |
| |
| /** |
| * Return the currently set title. If {@link #titleRes} is set, |
| * this resource is loaded from <var>res</var> and returned. Otherwise |
| * {@link #title} is returned. |
| */ |
| public CharSequence getTitle(Resources res) { |
| if (titleRes != 0) { |
| return res.getText(titleRes); |
| } |
| return title; |
| } |
| |
| /** |
| * Return the currently set summary. If {@link #summaryRes} is set, |
| * this resource is loaded from <var>res</var> and returned. Otherwise |
| * {@link #summary} is returned. |
| */ |
| public CharSequence getSummary(Resources res) { |
| if (summaryRes != 0) { |
| return res.getText(summaryRes); |
| } |
| return summary; |
| } |
| |
| /** |
| * Return the currently set bread crumb title. If {@link #breadCrumbTitleRes} is set, |
| * this resource is loaded from <var>res</var> and returned. Otherwise |
| * {@link #breadCrumbTitle} is returned. |
| */ |
| public CharSequence getBreadCrumbTitle(Resources res) { |
| if (breadCrumbTitleRes != 0) { |
| return res.getText(breadCrumbTitleRes); |
| } |
| return breadCrumbTitle; |
| } |
| |
| /** |
| * Return the currently set bread crumb short title. If |
| * {@link #breadCrumbShortTitleRes} is set, |
| * this resource is loaded from <var>res</var> and returned. Otherwise |
| * {@link #breadCrumbShortTitle} is returned. |
| */ |
| public CharSequence getBreadCrumbShortTitle(Resources res) { |
| if (breadCrumbShortTitleRes != 0) { |
| return res.getText(breadCrumbShortTitleRes); |
| } |
| return breadCrumbShortTitle; |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeLong(id); |
| dest.writeInt(titleRes); |
| TextUtils.writeToParcel(title, dest, flags); |
| dest.writeInt(summaryRes); |
| TextUtils.writeToParcel(summary, dest, flags); |
| dest.writeInt(breadCrumbTitleRes); |
| TextUtils.writeToParcel(breadCrumbTitle, dest, flags); |
| dest.writeInt(breadCrumbShortTitleRes); |
| TextUtils.writeToParcel(breadCrumbShortTitle, dest, flags); |
| dest.writeInt(iconRes); |
| dest.writeString(fragment); |
| dest.writeBundle(fragmentArguments); |
| if (intent != null) { |
| dest.writeInt(1); |
| intent.writeToParcel(dest, flags); |
| } else { |
| dest.writeInt(0); |
| } |
| dest.writeBundle(extras); |
| } |
| |
| public void readFromParcel(Parcel in) { |
| id = in.readLong(); |
| titleRes = in.readInt(); |
| title = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| summaryRes = in.readInt(); |
| summary = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| breadCrumbTitleRes = in.readInt(); |
| breadCrumbTitle = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| breadCrumbShortTitleRes = in.readInt(); |
| breadCrumbShortTitle = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| iconRes = in.readInt(); |
| fragment = in.readString(); |
| fragmentArguments = in.readBundle(); |
| if (in.readInt() != 0) { |
| intent = Intent.CREATOR.createFromParcel(in); |
| } |
| extras = in.readBundle(); |
| } |
| |
| Header(Parcel in) { |
| readFromParcel(in); |
| } |
| |
| public static final @android.annotation.NonNull Creator<Header> CREATOR = new Creator<Header>() { |
| public Header createFromParcel(Parcel source) { |
| return new Header(source); |
| } |
| public Header[] newArray(int size) { |
| return new Header[size]; |
| } |
| }; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| if (item.getItemId() == android.R.id.home) { |
| // Override home navigation button to call onBackPressed (b/35152749). |
| onBackPressed(); |
| return true; |
| } |
| return super.onOptionsItemSelected(item); |
| } |
| |
| @Override |
| protected void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| // Theming for the PreferenceActivity layout and for the Preference Header(s) layout |
| TypedArray sa = obtainStyledAttributes(null, |
| com.android.internal.R.styleable.PreferenceActivity, |
| com.android.internal.R.attr.preferenceActivityStyle, |
| 0); |
| |
| final int layoutResId = sa.getResourceId( |
| com.android.internal.R.styleable.PreferenceActivity_layout, |
| com.android.internal.R.layout.preference_list_content); |
| |
| mPreferenceHeaderItemResId = sa.getResourceId( |
| com.android.internal.R.styleable.PreferenceActivity_headerLayout, |
| com.android.internal.R.layout.preference_header_item); |
| mPreferenceHeaderRemoveEmptyIcon = sa.getBoolean( |
| com.android.internal.R.styleable.PreferenceActivity_headerRemoveIconIfEmpty, |
| false); |
| |
| sa.recycle(); |
| |
| setContentView(layoutResId); |
| |
| mListFooter = (FrameLayout)findViewById(com.android.internal.R.id.list_footer); |
| mPrefsContainer = (ViewGroup) findViewById(com.android.internal.R.id.prefs_frame); |
| mHeadersContainer = (ViewGroup) findViewById(com.android.internal.R.id.headers); |
| boolean hidingHeaders = onIsHidingHeaders(); |
| mSinglePane = hidingHeaders || !onIsMultiPane(); |
| String initialFragment = getIntent().getStringExtra(EXTRA_SHOW_FRAGMENT); |
| Bundle initialArguments = getIntent().getBundleExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS); |
| int initialTitle = getIntent().getIntExtra(EXTRA_SHOW_FRAGMENT_TITLE, 0); |
| int initialShortTitle = getIntent().getIntExtra(EXTRA_SHOW_FRAGMENT_SHORT_TITLE, 0); |
| mActivityTitle = getTitle(); |
| |
| if (savedInstanceState != null) { |
| // We are restarting from a previous saved state; used that to |
| // initialize, instead of starting fresh. |
| ArrayList<Header> headers = savedInstanceState.getParcelableArrayList(HEADERS_TAG, android.preference.PreferenceActivity.Header.class); |
| if (headers != null) { |
| mHeaders.addAll(headers); |
| int curHeader = savedInstanceState.getInt(CUR_HEADER_TAG, |
| (int) HEADER_ID_UNDEFINED); |
| if (curHeader >= 0 && curHeader < mHeaders.size()) { |
| setSelectedHeader(mHeaders.get(curHeader)); |
| } else if (!mSinglePane && initialFragment == null) { |
| switchToHeader(onGetInitialHeader()); |
| } |
| } else { |
| // This will for instance hide breadcrumbs for single pane. |
| showBreadCrumbs(getTitle(), null); |
| } |
| } else { |
| if (!onIsHidingHeaders()) { |
| onBuildHeaders(mHeaders); |
| } |
| |
| if (initialFragment != null) { |
| switchToHeader(initialFragment, initialArguments); |
| } else if (!mSinglePane && mHeaders.size() > 0) { |
| switchToHeader(onGetInitialHeader()); |
| } |
| } |
| |
| if (mHeaders.size() > 0) { |
| setListAdapter(new HeaderAdapter(this, mHeaders, mPreferenceHeaderItemResId, |
| mPreferenceHeaderRemoveEmptyIcon)); |
| if (!mSinglePane) { |
| getListView().setChoiceMode(AbsListView.CHOICE_MODE_SINGLE); |
| } |
| } |
| |
| if (mSinglePane && initialFragment != null && initialTitle != 0) { |
| CharSequence initialTitleStr = getText(initialTitle); |
| CharSequence initialShortTitleStr = initialShortTitle != 0 |
| ? getText(initialShortTitle) : null; |
| showBreadCrumbs(initialTitleStr, initialShortTitleStr); |
| } |
| |
| if (mHeaders.size() == 0 && initialFragment == null) { |
| // If there are no headers, we are in the old "just show a screen |
| // of preferences" mode. |
| setContentView(com.android.internal.R.layout.preference_list_content_single); |
| mListFooter = (FrameLayout) findViewById(com.android.internal.R.id.list_footer); |
| mPrefsContainer = (ViewGroup) findViewById(com.android.internal.R.id.prefs); |
| mPreferenceManager = new PreferenceManager(this, FIRST_REQUEST_CODE); |
| mPreferenceManager.setOnPreferenceTreeClickListener(this); |
| mHeadersContainer = null; |
| } else if (mSinglePane) { |
| // Single-pane so one of the header or prefs containers must be hidden. |
| if (initialFragment != null || mCurHeader != null) { |
| mHeadersContainer.setVisibility(View.GONE); |
| } else { |
| mPrefsContainer.setVisibility(View.GONE); |
| } |
| |
| // This animates our manual transitions between headers and prefs panel in single-pane. |
| // It also comes last so we don't animate any initial layout changes done above. |
| ViewGroup container = (ViewGroup) findViewById( |
| com.android.internal.R.id.prefs_container); |
| container.setLayoutTransition(new LayoutTransition()); |
| } else { |
| // Multi-pane |
| if (mHeaders.size() > 0 && mCurHeader != null) { |
| setSelectedHeader(mCurHeader); |
| } |
| } |
| |
| // see if we should show Back/Next buttons |
| Intent intent = getIntent(); |
| if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_BUTTON_BAR, false)) { |
| |
| findViewById(com.android.internal.R.id.button_bar).setVisibility(View.VISIBLE); |
| |
| Button backButton = (Button)findViewById(com.android.internal.R.id.back_button); |
| backButton.setOnClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| setResult(RESULT_CANCELED); |
| finish(); |
| } |
| }); |
| Button skipButton = (Button)findViewById(com.android.internal.R.id.skip_button); |
| skipButton.setOnClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| setResult(RESULT_OK); |
| finish(); |
| } |
| }); |
| mNextButton = (Button)findViewById(com.android.internal.R.id.next_button); |
| mNextButton.setOnClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| setResult(RESULT_OK); |
| finish(); |
| } |
| }); |
| |
| // set our various button parameters |
| if (intent.hasExtra(EXTRA_PREFS_SET_NEXT_TEXT)) { |
| String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_NEXT_TEXT); |
| if (TextUtils.isEmpty(buttonText)) { |
| mNextButton.setVisibility(View.GONE); |
| } |
| else { |
| mNextButton.setText(buttonText); |
| } |
| } |
| if (intent.hasExtra(EXTRA_PREFS_SET_BACK_TEXT)) { |
| String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_BACK_TEXT); |
| if (TextUtils.isEmpty(buttonText)) { |
| backButton.setVisibility(View.GONE); |
| } |
| else { |
| backButton.setText(buttonText); |
| } |
| } |
| if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_SKIP, false)) { |
| skipButton.setVisibility(View.VISIBLE); |
| } |
| } |
| } |
| |
| @Override |
| public void onBackPressed() { |
| if (mCurHeader != null && mSinglePane && getFragmentManager().getBackStackEntryCount() == 0 |
| && getIntent().getStringExtra(EXTRA_SHOW_FRAGMENT) == null) { |
| mCurHeader = null; |
| |
| mPrefsContainer.setVisibility(View.GONE); |
| mHeadersContainer.setVisibility(View.VISIBLE); |
| if (mActivityTitle != null) { |
| showBreadCrumbs(mActivityTitle, null); |
| } |
| getListView().clearChoices(); |
| } else { |
| super.onBackPressed(); |
| } |
| } |
| |
| /** |
| * Returns true if this activity is currently showing the header list. |
| */ |
| public boolean hasHeaders() { |
| return mHeadersContainer != null && mHeadersContainer.getVisibility() == View.VISIBLE; |
| } |
| |
| /** |
| * Returns the Header list |
| * @hide |
| */ |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553) |
| public List<Header> getHeaders() { |
| return mHeaders; |
| } |
| |
| /** |
| * Returns true if this activity is showing multiple panes -- the headers |
| * and a preference fragment. |
| */ |
| public boolean isMultiPane() { |
| return !mSinglePane; |
| } |
| |
| /** |
| * Called to determine if the activity should run in multi-pane mode. |
| * The default implementation returns true if the screen is large |
| * enough. |
| */ |
| public boolean onIsMultiPane() { |
| boolean preferMultiPane = getResources().getBoolean( |
| com.android.internal.R.bool.preferences_prefer_dual_pane); |
| return preferMultiPane; |
| } |
| |
| /** |
| * Called to determine whether the header list should be hidden. |
| * The default implementation returns the |
| * value given in {@link #EXTRA_NO_HEADERS} or false if it is not supplied. |
| * This is set to false, for example, when the activity is being re-launched |
| * to show a particular preference activity. |
| */ |
| public boolean onIsHidingHeaders() { |
| return getIntent().getBooleanExtra(EXTRA_NO_HEADERS, false); |
| } |
| |
| /** |
| * Called to determine the initial header to be shown. The default |
| * implementation simply returns the fragment of the first header. Note |
| * that the returned Header object does not actually need to exist in |
| * your header list -- whatever its fragment is will simply be used to |
| * show for the initial UI. |
| */ |
| public Header onGetInitialHeader() { |
| for (int i=0; i<mHeaders.size(); i++) { |
| Header h = mHeaders.get(i); |
| if (h.fragment != null) { |
| return h; |
| } |
| } |
| throw new IllegalStateException("Must have at least one header with a fragment"); |
| } |
| |
| /** |
| * Called after the header list has been updated ({@link #onBuildHeaders} |
| * has been called and returned due to {@link #invalidateHeaders()}) to |
| * specify the header that should now be selected. The default implementation |
| * returns null to keep whatever header is currently selected. |
| */ |
| public Header onGetNewHeader() { |
| return null; |
| } |
| |
| /** |
| * Called when the activity needs its list of headers build. By |
| * implementing this and adding at least one item to the list, you |
| * will cause the activity to run in its modern fragment mode. Note |
| * that this function may not always be called; for example, if the |
| * activity has been asked to display a particular fragment without |
| * the header list, there is no need to build the headers. |
| * |
| * <p>Typical implementations will use {@link #loadHeadersFromResource} |
| * to fill in the list from a resource. |
| * |
| * @param target The list in which to place the headers. |
| */ |
| public void onBuildHeaders(List<Header> target) { |
| // Should be overloaded by subclasses |
| } |
| |
| /** |
| * Call when you need to change the headers being displayed. Will result |
| * in onBuildHeaders() later being called to retrieve the new list. |
| */ |
| public void invalidateHeaders() { |
| if (!mHandler.hasMessages(MSG_BUILD_HEADERS)) { |
| mHandler.sendEmptyMessage(MSG_BUILD_HEADERS); |
| } |
| } |
| |
| /** |
| * Parse the given XML file as a header description, adding each |
| * parsed Header into the target list. |
| * |
| * @param resid The XML resource to load and parse. |
| * @param target The list in which the parsed headers should be placed. |
| */ |
| public void loadHeadersFromResource(@XmlRes int resid, List<Header> target) { |
| XmlResourceParser parser = null; |
| try { |
| parser = getResources().getXml(resid); |
| AttributeSet attrs = Xml.asAttributeSet(parser); |
| |
| int type; |
| while ((type=parser.next()) != XmlPullParser.END_DOCUMENT |
| && type != XmlPullParser.START_TAG) { |
| // Parse next until start tag is found |
| } |
| |
| String nodeName = parser.getName(); |
| if (!"preference-headers".equals(nodeName)) { |
| throw new RuntimeException( |
| "XML document must start with <preference-headers> tag; found" |
| + nodeName + " at " + parser.getPositionDescription()); |
| } |
| |
| Bundle curBundle = null; |
| |
| final int outerDepth = parser.getDepth(); |
| while ((type=parser.next()) != XmlPullParser.END_DOCUMENT |
| && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { |
| if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { |
| continue; |
| } |
| |
| nodeName = parser.getName(); |
| if ("header".equals(nodeName)) { |
| Header header = new Header(); |
| |
| TypedArray sa = obtainStyledAttributes( |
| attrs, com.android.internal.R.styleable.PreferenceHeader); |
| header.id = sa.getResourceId( |
| com.android.internal.R.styleable.PreferenceHeader_id, |
| (int)HEADER_ID_UNDEFINED); |
| TypedValue tv = sa.peekValue( |
| com.android.internal.R.styleable.PreferenceHeader_title); |
| if (tv != null && tv.type == TypedValue.TYPE_STRING) { |
| if (tv.resourceId != 0) { |
| header.titleRes = tv.resourceId; |
| } else { |
| header.title = tv.string; |
| } |
| } |
| tv = sa.peekValue( |
| com.android.internal.R.styleable.PreferenceHeader_summary); |
| if (tv != null && tv.type == TypedValue.TYPE_STRING) { |
| if (tv.resourceId != 0) { |
| header.summaryRes = tv.resourceId; |
| } else { |
| header.summary = tv.string; |
| } |
| } |
| tv = sa.peekValue( |
| com.android.internal.R.styleable.PreferenceHeader_breadCrumbTitle); |
| if (tv != null && tv.type == TypedValue.TYPE_STRING) { |
| if (tv.resourceId != 0) { |
| header.breadCrumbTitleRes = tv.resourceId; |
| } else { |
| header.breadCrumbTitle = tv.string; |
| } |
| } |
| tv = sa.peekValue( |
| com.android.internal.R.styleable.PreferenceHeader_breadCrumbShortTitle); |
| if (tv != null && tv.type == TypedValue.TYPE_STRING) { |
| if (tv.resourceId != 0) { |
| header.breadCrumbShortTitleRes = tv.resourceId; |
| } else { |
| header.breadCrumbShortTitle = tv.string; |
| } |
| } |
| header.iconRes = sa.getResourceId( |
| com.android.internal.R.styleable.PreferenceHeader_icon, 0); |
| header.fragment = sa.getString( |
| com.android.internal.R.styleable.PreferenceHeader_fragment); |
| sa.recycle(); |
| |
| if (curBundle == null) { |
| curBundle = new Bundle(); |
| } |
| |
| final int innerDepth = parser.getDepth(); |
| while ((type=parser.next()) != XmlPullParser.END_DOCUMENT |
| && (type != XmlPullParser.END_TAG || parser.getDepth() > innerDepth)) { |
| if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { |
| continue; |
| } |
| |
| String innerNodeName = parser.getName(); |
| if (innerNodeName.equals("extra")) { |
| getResources().parseBundleExtra("extra", attrs, curBundle); |
| XmlUtils.skipCurrentTag(parser); |
| |
| } else if (innerNodeName.equals("intent")) { |
| header.intent = Intent.parseIntent(getResources(), parser, attrs); |
| |
| } else { |
| XmlUtils.skipCurrentTag(parser); |
| } |
| } |
| |
| if (curBundle.size() > 0) { |
| header.fragmentArguments = curBundle; |
| curBundle = null; |
| } |
| |
| target.add(header); |
| } else { |
| XmlUtils.skipCurrentTag(parser); |
| } |
| } |
| |
| } catch (XmlPullParserException e) { |
| throw new RuntimeException("Error parsing headers", e); |
| } catch (IOException e) { |
| throw new RuntimeException("Error parsing headers", e); |
| } finally { |
| if (parser != null) parser.close(); |
| } |
| } |
| |
| /** |
| * Subclasses should override this method and verify that the given fragment is a valid type |
| * to be attached to this activity. The default implementation returns <code>true</code> for |
| * apps built for <code>android:targetSdkVersion</code> older than |
| * {@link android.os.Build.VERSION_CODES#KITKAT}. For later versions, it will throw an exception. |
| * @param fragmentName the class name of the Fragment about to be attached to this activity. |
| * @return true if the fragment class name is valid for this Activity and false otherwise. |
| */ |
| protected boolean isValidFragment(String fragmentName) { |
| if (getApplicationInfo().targetSdkVersion >= android.os.Build.VERSION_CODES.KITKAT) { |
| throw new RuntimeException( |
| "Subclasses of PreferenceActivity must override isValidFragment(String)" |
| + " to verify that the Fragment class is valid! " |
| + this.getClass().getName() |
| + " has not checked if fragment " + fragmentName + " is valid."); |
| } else { |
| return true; |
| } |
| } |
| |
| /** |
| * Set a footer that should be shown at the bottom of the header list. |
| */ |
| public void setListFooter(View view) { |
| mListFooter.removeAllViews(); |
| mListFooter.addView(view, new FrameLayout.LayoutParams( |
| FrameLayout.LayoutParams.MATCH_PARENT, |
| FrameLayout.LayoutParams.WRAP_CONTENT)); |
| } |
| |
| @Override |
| protected void onStop() { |
| super.onStop(); |
| |
| if (mPreferenceManager != null) { |
| mPreferenceManager.dispatchActivityStop(); |
| } |
| } |
| |
| @Override |
| protected void onDestroy() { |
| mHandler.removeMessages(MSG_BIND_PREFERENCES); |
| mHandler.removeMessages(MSG_BUILD_HEADERS); |
| super.onDestroy(); |
| |
| if (mPreferenceManager != null) { |
| mPreferenceManager.dispatchActivityDestroy(); |
| } |
| } |
| |
| @Override |
| protected void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| |
| if (mHeaders.size() > 0) { |
| outState.putParcelableArrayList(HEADERS_TAG, mHeaders); |
| if (mCurHeader != null) { |
| int index = mHeaders.indexOf(mCurHeader); |
| if (index >= 0) { |
| outState.putInt(CUR_HEADER_TAG, index); |
| } |
| } |
| } |
| |
| if (mPreferenceManager != null) { |
| final PreferenceScreen preferenceScreen = getPreferenceScreen(); |
| if (preferenceScreen != null) { |
| Bundle container = new Bundle(); |
| preferenceScreen.saveHierarchyState(container); |
| outState.putBundle(PREFERENCES_TAG, container); |
| } |
| } |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Bundle state) { |
| if (mPreferenceManager != null) { |
| Bundle container = state.getBundle(PREFERENCES_TAG); |
| if (container != null) { |
| final PreferenceScreen preferenceScreen = getPreferenceScreen(); |
| if (preferenceScreen != null) { |
| preferenceScreen.restoreHierarchyState(container); |
| mSavedInstanceState = state; |
| return; |
| } |
| } |
| } |
| |
| // Only call this if we didn't save the instance state for later. |
| // If we did save it, it will be restored when we bind the adapter. |
| super.onRestoreInstanceState(state); |
| |
| if (!mSinglePane) { |
| // Multi-pane. |
| if (mCurHeader != null) { |
| setSelectedHeader(mCurHeader); |
| } |
| } |
| } |
| |
| @Override |
| protected void onActivityResult(int requestCode, int resultCode, Intent data) { |
| super.onActivityResult(requestCode, resultCode, data); |
| |
| if (mPreferenceManager != null) { |
| mPreferenceManager.dispatchActivityResult(requestCode, resultCode, data); |
| } |
| } |
| |
| @Override |
| public void onContentChanged() { |
| super.onContentChanged(); |
| |
| if (mPreferenceManager != null) { |
| postBindPreferences(); |
| } |
| } |
| |
| @Override |
| protected void onListItemClick(ListView l, View v, int position, long id) { |
| if (!isResumed()) { |
| return; |
| } |
| super.onListItemClick(l, v, position, id); |
| |
| if (mAdapter != null) { |
| Object item = mAdapter.getItem(position); |
| if (item instanceof Header) onHeaderClick((Header) item, position); |
| } |
| } |
| |
| /** |
| * Called when the user selects an item in the header list. The default |
| * implementation will call either |
| * {@link #startWithFragment(String, Bundle, Fragment, int, int, int)} |
| * or {@link #switchToHeader(Header)} as appropriate. |
| * |
| * @param header The header that was selected. |
| * @param position The header's position in the list. |
| */ |
| public void onHeaderClick(Header header, int position) { |
| if (header.fragment != null) { |
| switchToHeader(header); |
| } else if (header.intent != null) { |
| startActivity(header.intent); |
| } |
| } |
| |
| /** |
| * Called by {@link #startWithFragment(String, Bundle, Fragment, int, int, int)} when |
| * in single-pane mode, to build an Intent to launch a new activity showing |
| * the selected fragment. The default implementation constructs an Intent |
| * that re-launches the current activity with the appropriate arguments to |
| * display the fragment. |
| * |
| * @param fragmentName The name of the fragment to display. |
| * @param args Optional arguments to supply to the fragment. |
| * @param titleRes Optional resource ID of title to show for this item. |
| * @param shortTitleRes Optional resource ID of short title to show for this item. |
| * @return Returns an Intent that can be launched to display the given |
| * fragment. |
| */ |
| public Intent onBuildStartFragmentIntent(String fragmentName, Bundle args, |
| @StringRes int titleRes, int shortTitleRes) { |
| Intent intent = new Intent(Intent.ACTION_MAIN); |
| intent.setClass(this, getClass()); |
| intent.putExtra(EXTRA_SHOW_FRAGMENT, fragmentName); |
| intent.putExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS, args); |
| intent.putExtra(EXTRA_SHOW_FRAGMENT_TITLE, titleRes); |
| intent.putExtra(EXTRA_SHOW_FRAGMENT_SHORT_TITLE, shortTitleRes); |
| intent.putExtra(EXTRA_NO_HEADERS, true); |
| return intent; |
| } |
| |
| /** |
| * Like {@link #startWithFragment(String, Bundle, Fragment, int, int, int)} |
| * but uses a 0 titleRes. |
| */ |
| public void startWithFragment(String fragmentName, Bundle args, |
| Fragment resultTo, int resultRequestCode) { |
| startWithFragment(fragmentName, args, resultTo, resultRequestCode, 0, 0); |
| } |
| |
| /** |
| * Start a new instance of this activity, showing only the given |
| * preference fragment. When launched in this mode, the header list |
| * will be hidden and the given preference fragment will be instantiated |
| * and fill the entire activity. |
| * |
| * @param fragmentName The name of the fragment to display. |
| * @param args Optional arguments to supply to the fragment. |
| * @param resultTo Option fragment that should receive the result of |
| * the activity launch. |
| * @param resultRequestCode If resultTo is non-null, this is the request |
| * code in which to report the result. |
| * @param titleRes Resource ID of string to display for the title of |
| * this set of preferences. |
| * @param shortTitleRes Resource ID of string to display for the short title of |
| * this set of preferences. |
| */ |
| public void startWithFragment(String fragmentName, Bundle args, |
| Fragment resultTo, int resultRequestCode, @StringRes int titleRes, |
| @StringRes int shortTitleRes) { |
| Intent intent = onBuildStartFragmentIntent(fragmentName, args, titleRes, shortTitleRes); |
| if (resultTo == null) { |
| startActivity(intent); |
| } else { |
| resultTo.startActivityForResult(intent, resultRequestCode); |
| } |
| } |
| |
| /** |
| * Change the base title of the bread crumbs for the current preferences. |
| * This will normally be called for you. See |
| * {@link android.app.FragmentBreadCrumbs} for more information. |
| */ |
| public void showBreadCrumbs(CharSequence title, CharSequence shortTitle) { |
| if (mFragmentBreadCrumbs == null) { |
| View crumbs = findViewById(android.R.id.title); |
| // For screens with a different kind of title, don't create breadcrumbs. |
| try { |
| mFragmentBreadCrumbs = (FragmentBreadCrumbs)crumbs; |
| } catch (ClassCastException e) { |
| setTitle(title); |
| return; |
| } |
| if (mFragmentBreadCrumbs == null) { |
| if (title != null) { |
| setTitle(title); |
| } |
| return; |
| } |
| if (mSinglePane) { |
| mFragmentBreadCrumbs.setVisibility(View.GONE); |
| // Hide the breadcrumb section completely for single-pane |
| View bcSection = findViewById(com.android.internal.R.id.breadcrumb_section); |
| if (bcSection != null) bcSection.setVisibility(View.GONE); |
| setTitle(title); |
| } |
| mFragmentBreadCrumbs.setMaxVisible(2); |
| mFragmentBreadCrumbs.setActivity(this); |
| } |
| if (mFragmentBreadCrumbs.getVisibility() != View.VISIBLE) { |
| setTitle(title); |
| } else { |
| mFragmentBreadCrumbs.setTitle(title, shortTitle); |
| mFragmentBreadCrumbs.setParentTitle(null, null, null); |
| } |
| } |
| |
| /** |
| * Should be called after onCreate to ensure that the breadcrumbs, if any, were created. |
| * This prepends a title to the fragment breadcrumbs and attaches a listener to any clicks |
| * on the parent entry. |
| * @param title the title for the breadcrumb |
| * @param shortTitle the short title for the breadcrumb |
| */ |
| public void setParentTitle(CharSequence title, CharSequence shortTitle, |
| OnClickListener listener) { |
| if (mFragmentBreadCrumbs != null) { |
| mFragmentBreadCrumbs.setParentTitle(title, shortTitle, listener); |
| } |
| } |
| |
| void setSelectedHeader(Header header) { |
| mCurHeader = header; |
| int index = mHeaders.indexOf(header); |
| if (index >= 0) { |
| getListView().setItemChecked(index, true); |
| } else { |
| getListView().clearChoices(); |
| } |
| showBreadCrumbs(header); |
| } |
| |
| void showBreadCrumbs(Header header) { |
| if (header != null) { |
| CharSequence title = header.getBreadCrumbTitle(getResources()); |
| if (title == null) title = header.getTitle(getResources()); |
| if (title == null) title = getTitle(); |
| showBreadCrumbs(title, header.getBreadCrumbShortTitle(getResources())); |
| } else { |
| showBreadCrumbs(getTitle(), null); |
| } |
| } |
| |
| private void switchToHeaderInner(String fragmentName, Bundle args) { |
| getFragmentManager().popBackStack(BACK_STACK_PREFS, |
| FragmentManager.POP_BACK_STACK_INCLUSIVE); |
| if (!isValidFragment(fragmentName)) { |
| throw new IllegalArgumentException("Invalid fragment for this activity: " |
| + fragmentName); |
| } |
| |
| Fragment f = Fragment.instantiate(this, fragmentName, args); |
| FragmentTransaction transaction = getFragmentManager().beginTransaction(); |
| transaction.setTransition(mSinglePane |
| ? FragmentTransaction.TRANSIT_NONE |
| : FragmentTransaction.TRANSIT_FRAGMENT_FADE); |
| transaction.replace(com.android.internal.R.id.prefs, f); |
| transaction.commitAllowingStateLoss(); |
| |
| if (mSinglePane && mPrefsContainer.getVisibility() == View.GONE) { |
| // We are transitioning from headers to preferences panel in single-pane so we need |
| // to hide headers and show the prefs container. |
| mPrefsContainer.setVisibility(View.VISIBLE); |
| mHeadersContainer.setVisibility(View.GONE); |
| } |
| } |
| |
| /** |
| * When in two-pane mode, switch the fragment pane to show the given |
| * preference fragment. |
| * |
| * @param fragmentName The name of the fragment to display. |
| * @param args Optional arguments to supply to the fragment. |
| */ |
| public void switchToHeader(String fragmentName, Bundle args) { |
| Header selectedHeader = null; |
| for (int i = 0; i < mHeaders.size(); i++) { |
| if (fragmentName.equals(mHeaders.get(i).fragment)) { |
| selectedHeader = mHeaders.get(i); |
| break; |
| } |
| } |
| setSelectedHeader(selectedHeader); |
| switchToHeaderInner(fragmentName, args); |
| } |
| |
| /** |
| * When in two-pane mode, switch to the fragment pane to show the given |
| * preference fragment. |
| * |
| * @param header The new header to display. |
| */ |
| public void switchToHeader(Header header) { |
| if (mCurHeader == header) { |
| // This is the header we are currently displaying. Just make sure |
| // to pop the stack up to its root state. |
| getFragmentManager().popBackStack(BACK_STACK_PREFS, |
| FragmentManager.POP_BACK_STACK_INCLUSIVE); |
| } else { |
| if (header.fragment == null) { |
| throw new IllegalStateException("can't switch to header that has no fragment"); |
| } |
| switchToHeaderInner(header.fragment, header.fragmentArguments); |
| setSelectedHeader(header); |
| } |
| } |
| |
| Header findBestMatchingHeader(Header cur, ArrayList<Header> from) { |
| ArrayList<Header> matches = new ArrayList<Header>(); |
| for (int j=0; j<from.size(); j++) { |
| Header oh = from.get(j); |
| if (cur == oh || (cur.id != HEADER_ID_UNDEFINED && cur.id == oh.id)) { |
| // Must be this one. |
| matches.clear(); |
| matches.add(oh); |
| break; |
| } |
| if (cur.fragment != null) { |
| if (cur.fragment.equals(oh.fragment)) { |
| matches.add(oh); |
| } |
| } else if (cur.intent != null) { |
| if (cur.intent.equals(oh.intent)) { |
| matches.add(oh); |
| } |
| } else if (cur.title != null) { |
| if (cur.title.equals(oh.title)) { |
| matches.add(oh); |
| } |
| } |
| } |
| final int NM = matches.size(); |
| if (NM == 1) { |
| return matches.get(0); |
| } else if (NM > 1) { |
| for (int j=0; j<NM; j++) { |
| Header oh = matches.get(j); |
| if (cur.fragmentArguments != null && |
| cur.fragmentArguments.equals(oh.fragmentArguments)) { |
| return oh; |
| } |
| if (cur.extras != null && cur.extras.equals(oh.extras)) { |
| return oh; |
| } |
| if (cur.title != null && cur.title.equals(oh.title)) { |
| return oh; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Start a new fragment. |
| * |
| * @param fragment The fragment to start |
| * @param push If true, the current fragment will be pushed onto the back stack. If false, |
| * the current fragment will be replaced. |
| */ |
| public void startPreferenceFragment(Fragment fragment, boolean push) { |
| FragmentTransaction transaction = getFragmentManager().beginTransaction(); |
| transaction.replace(com.android.internal.R.id.prefs, fragment); |
| if (push) { |
| transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); |
| transaction.addToBackStack(BACK_STACK_PREFS); |
| } else { |
| transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); |
| } |
| transaction.commitAllowingStateLoss(); |
| } |
| |
| /** |
| * Start a new fragment containing a preference panel. If the preferences |
| * are being displayed in multi-pane mode, the given fragment class will |
| * be instantiated and placed in the appropriate pane. If running in |
| * single-pane mode, a new activity will be launched in which to show the |
| * fragment. |
| * |
| * @param fragmentClass Full name of the class implementing the fragment. |
| * @param args Any desired arguments to supply to the fragment. |
| * @param titleRes Optional resource identifier of the title of this |
| * fragment. |
| * @param titleText Optional text of the title of this fragment. |
| * @param resultTo Optional fragment that result data should be sent to. |
| * If non-null, resultTo.onActivityResult() will be called when this |
| * preference panel is done. The launched panel must use |
| * {@link #finishPreferencePanel(Fragment, int, Intent)} when done. |
| * @param resultRequestCode If resultTo is non-null, this is the caller's |
| * request code to be received with the result. |
| */ |
| public void startPreferencePanel(String fragmentClass, Bundle args, @StringRes int titleRes, |
| CharSequence titleText, Fragment resultTo, int resultRequestCode) { |
| Fragment f = Fragment.instantiate(this, fragmentClass, args); |
| if (resultTo != null) { |
| f.setTargetFragment(resultTo, resultRequestCode); |
| } |
| FragmentTransaction transaction = getFragmentManager().beginTransaction(); |
| transaction.replace(com.android.internal.R.id.prefs, f); |
| if (titleRes != 0) { |
| transaction.setBreadCrumbTitle(titleRes); |
| } else if (titleText != null) { |
| transaction.setBreadCrumbTitle(titleText); |
| } |
| transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); |
| transaction.addToBackStack(BACK_STACK_PREFS); |
| transaction.commitAllowingStateLoss(); |
| } |
| |
| /** |
| * Called by a preference panel fragment to finish itself. |
| * |
| * @param caller The fragment that is asking to be finished. |
| * @param resultCode Optional result code to send back to the original |
| * launching fragment. |
| * @param resultData Optional result data to send back to the original |
| * launching fragment. |
| */ |
| public void finishPreferencePanel(Fragment caller, int resultCode, Intent resultData) { |
| // TODO: be smarter about popping the stack. |
| onBackPressed(); |
| if (caller != null) { |
| if (caller.getTargetFragment() != null) { |
| caller.getTargetFragment().onActivityResult(caller.getTargetRequestCode(), |
| resultCode, resultData); |
| } |
| } |
| } |
| |
| @Override |
| public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) { |
| startPreferencePanel(pref.getFragment(), pref.getExtras(), pref.getTitleRes(), |
| pref.getTitle(), null, 0); |
| return true; |
| } |
| |
| /** |
| * Posts a message to bind the preferences to the list view. |
| * <p> |
| * Binding late is preferred as any custom preference types created in |
| * {@link #onCreate(Bundle)} are able to have their views recycled. |
| */ |
| @UnsupportedAppUsage |
| private void postBindPreferences() { |
| if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) return; |
| mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget(); |
| } |
| |
| private void bindPreferences() { |
| final PreferenceScreen preferenceScreen = getPreferenceScreen(); |
| if (preferenceScreen != null) { |
| preferenceScreen.bind(getListView()); |
| if (mSavedInstanceState != null) { |
| super.onRestoreInstanceState(mSavedInstanceState); |
| mSavedInstanceState = null; |
| } |
| } |
| } |
| |
| /** |
| * Returns the {@link PreferenceManager} used by this activity. |
| * @return The {@link PreferenceManager}. |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public PreferenceManager getPreferenceManager() { |
| return mPreferenceManager; |
| } |
| |
| @UnsupportedAppUsage |
| private void requirePreferenceManager() { |
| if (mPreferenceManager == null) { |
| if (mAdapter == null) { |
| throw new RuntimeException("This should be called after super.onCreate."); |
| } |
| throw new RuntimeException( |
| "Modern two-pane PreferenceActivity requires use of a PreferenceFragment"); |
| } |
| } |
| |
| /** |
| * Sets the root of the preference hierarchy that this activity is showing. |
| * |
| * @param preferenceScreen The root {@link PreferenceScreen} of the preference hierarchy. |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public void setPreferenceScreen(PreferenceScreen preferenceScreen) { |
| requirePreferenceManager(); |
| |
| if (mPreferenceManager.setPreferences(preferenceScreen) && preferenceScreen != null) { |
| postBindPreferences(); |
| CharSequence title = getPreferenceScreen().getTitle(); |
| // Set the title of the activity |
| if (title != null) { |
| setTitle(title); |
| } |
| } |
| } |
| |
| /** |
| * Gets the root of the preference hierarchy that this activity is showing. |
| * |
| * @return The {@link PreferenceScreen} that is the root of the preference |
| * hierarchy. |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public PreferenceScreen getPreferenceScreen() { |
| if (mPreferenceManager != null) { |
| return mPreferenceManager.getPreferenceScreen(); |
| } |
| return null; |
| } |
| |
| /** |
| * Adds preferences from activities that match the given {@link Intent}. |
| * |
| * @param intent The {@link Intent} to query activities. |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public void addPreferencesFromIntent(Intent intent) { |
| requirePreferenceManager(); |
| |
| setPreferenceScreen(mPreferenceManager.inflateFromIntent(intent, getPreferenceScreen())); |
| } |
| |
| /** |
| * Inflates the given XML resource and adds the preference hierarchy to the current |
| * preference hierarchy. |
| * |
| * @param preferencesResId The XML resource ID to inflate. |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public void addPreferencesFromResource(int preferencesResId) { |
| requirePreferenceManager(); |
| |
| setPreferenceScreen(mPreferenceManager.inflateFromResource(this, preferencesResId, |
| getPreferenceScreen())); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { |
| return false; |
| } |
| |
| /** |
| * Finds a {@link Preference} based on its key. |
| * |
| * @param key The key of the preference to retrieve. |
| * @return The {@link Preference} with the key, or null. |
| * @see PreferenceGroup#findPreference(CharSequence) |
| * |
| * @deprecated This function is not relevant for a modern fragment-based |
| * PreferenceActivity. |
| */ |
| @Deprecated |
| public Preference findPreference(CharSequence key) { |
| |
| if (mPreferenceManager == null) { |
| return null; |
| } |
| |
| return mPreferenceManager.findPreference(key); |
| } |
| |
| @Override |
| protected void onNewIntent(Intent intent) { |
| if (mPreferenceManager != null) { |
| mPreferenceManager.dispatchNewIntent(intent); |
| } |
| } |
| |
| // give subclasses access to the Next button |
| /** @hide */ |
| protected boolean hasNextButton() { |
| return mNextButton != null; |
| } |
| /** @hide */ |
| protected Button getNextButton() { |
| return mNextButton; |
| } |
| } |
