| /* |
| * Copyright (C) 2013 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 com.android.settings; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog.Builder; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.graphics.drawable.Drawable; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.preference.ListPreference; |
| import android.util.AttributeSet; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.ArrayAdapter; |
| import android.widget.ImageView; |
| import android.widget.ListAdapter; |
| import android.widget.TextView; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Extends ListPreference to allow us to show the icons for a given list of applications. We do this |
| * because the names of applications are very similar and the user may not be able to determine what |
| * app they are selecting without an icon. |
| */ |
| public class AppListPreference extends ListPreference { |
| |
| public static final String ITEM_NONE_VALUE = ""; |
| |
| private Drawable[] mEntryDrawables; |
| private boolean mShowItemNone = false; |
| |
| public class AppArrayAdapter extends ArrayAdapter<CharSequence> { |
| private Drawable[] mImageDrawables = null; |
| private int mSelectedIndex = 0; |
| |
| public AppArrayAdapter(Context context, int textViewResourceId, |
| CharSequence[] objects, Drawable[] imageDrawables, int selectedIndex) { |
| super(context, textViewResourceId, objects); |
| mSelectedIndex = selectedIndex; |
| mImageDrawables = imageDrawables; |
| } |
| |
| @Override |
| public View getView(int position, View convertView, ViewGroup parent) { |
| LayoutInflater inflater = ((Activity)getContext()).getLayoutInflater(); |
| View view = inflater.inflate(R.layout.app_preference_item, parent, false); |
| TextView textView = (TextView) view.findViewById(R.id.app_label); |
| textView.setText(getItem(position)); |
| if (position == mSelectedIndex) { |
| view.findViewById(R.id.default_label).setVisibility(View.VISIBLE); |
| } |
| ImageView imageView = (ImageView)view.findViewById(R.id.app_image); |
| imageView.setImageDrawable(mImageDrawables[position]); |
| return view; |
| } |
| } |
| |
| public AppListPreference(Context context, AttributeSet attrs, |
| int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| } |
| |
| public AppListPreference(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public void setShowItemNone(boolean showItemNone) { |
| mShowItemNone = showItemNone; |
| } |
| |
| public void setPackageNames(CharSequence[] packageNames, CharSequence defaultPackageName) { |
| // Look up all package names in PackageManager. Skip ones we can't find. |
| PackageManager pm = getContext().getPackageManager(); |
| final int entryCount = packageNames.length + (mShowItemNone ? 1 : 0); |
| List<CharSequence> applicationNames = new ArrayList<>(entryCount); |
| List<CharSequence> validatedPackageNames = new ArrayList<>(entryCount); |
| List<Drawable> entryDrawables = new ArrayList<>(entryCount); |
| int selectedIndex = -1; |
| for (int i = 0; i < packageNames.length; i++) { |
| try { |
| ApplicationInfo appInfo = pm.getApplicationInfo(packageNames[i].toString(), 0); |
| applicationNames.add(appInfo.loadLabel(pm)); |
| validatedPackageNames.add(appInfo.packageName); |
| entryDrawables.add(appInfo.loadIcon(pm)); |
| if (defaultPackageName != null && |
| appInfo.packageName.contentEquals(defaultPackageName)) { |
| selectedIndex = i; |
| } |
| } catch (NameNotFoundException e) { |
| // Skip unknown packages. |
| } |
| } |
| |
| if (mShowItemNone) { |
| applicationNames.add( |
| getContext().getResources().getText(R.string.app_list_preference_none)); |
| validatedPackageNames.add(ITEM_NONE_VALUE); |
| entryDrawables.add(getContext().getDrawable(R.drawable.ic_remove_circle)); |
| } |
| |
| setEntries(applicationNames.toArray(new CharSequence[applicationNames.size()])); |
| setEntryValues( |
| validatedPackageNames.toArray(new CharSequence[validatedPackageNames.size()])); |
| mEntryDrawables = entryDrawables.toArray(new Drawable[entryDrawables.size()]); |
| |
| if (selectedIndex != -1) { |
| setValueIndex(selectedIndex); |
| } else { |
| setValue(null); |
| } |
| } |
| |
| protected ListAdapter createListAdapter() { |
| final String selectedValue = getValue(); |
| final boolean selectedNone = selectedValue == null || |
| (mShowItemNone && selectedValue.contentEquals(ITEM_NONE_VALUE)); |
| int selectedIndex = selectedNone ? -1 : findIndexOfValue(selectedValue); |
| return new AppArrayAdapter(getContext(), |
| R.layout.app_preference_item, getEntries(), mEntryDrawables, selectedIndex); |
| } |
| |
| @Override |
| protected void onPrepareDialogBuilder(Builder builder) { |
| builder.setAdapter(createListAdapter(), this); |
| super.onPrepareDialogBuilder(builder); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| Parcelable superState = super.onSaveInstanceState(); |
| return new SavedState(getEntryValues(), getValue(), mShowItemNone, superState); |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Parcelable state) { |
| if (state instanceof SavedState) { |
| SavedState savedState = (SavedState) state; |
| mShowItemNone = savedState.showItemNone; |
| setPackageNames(savedState.entryValues, savedState.value); |
| super.onRestoreInstanceState(savedState.superState); |
| } else { |
| super.onRestoreInstanceState(state); |
| } |
| } |
| |
| private static class SavedState implements Parcelable { |
| |
| public final CharSequence[] entryValues; |
| public final CharSequence value; |
| public final boolean showItemNone; |
| public final Parcelable superState; |
| |
| public SavedState(CharSequence[] entryValues, CharSequence value, boolean showItemNone, |
| Parcelable superState) { |
| this.entryValues = entryValues; |
| this.value = value; |
| this.showItemNone = showItemNone; |
| this.superState = superState; |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| dest.writeCharSequenceArray(entryValues); |
| dest.writeCharSequence(value); |
| dest.writeInt(showItemNone ? 1 : 0); |
| dest.writeParcelable(superState, flags); |
| } |
| |
| public static Creator<SavedState> CREATOR = new Creator<SavedState>() { |
| @Override |
| public SavedState createFromParcel(Parcel source) { |
| CharSequence[] entryValues = source.readCharSequenceArray(); |
| CharSequence value = source.readCharSequence(); |
| boolean showItemNone = source.readInt() != 0; |
| Parcelable superState = source.readParcelable(getClass().getClassLoader()); |
| return new SavedState(entryValues, value, showItemNone, superState); |
| } |
| |
| @Override |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| } |