| /* |
| * Copyright (C) 2010 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.apps.tag; |
| |
| import android.app.Activity; |
| import android.app.AlertDialog; |
| import android.app.Dialog; |
| import android.app.TabActivity; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.content.res.Resources; |
| import android.nfc.NfcAdapter; |
| import android.os.Bundle; |
| import android.provider.Settings; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.widget.TabHost; |
| |
| /** |
| * A browsing {@link Activity} that displays the saved tags in categories under tabs. |
| */ |
| public class TagBrowserActivity extends TabActivity implements DialogInterface.OnClickListener { |
| |
| private static final int DIALOG_NFC_OFF = 1; |
| private static final String PREF_KEY_SHOW_INTRO = "showintro"; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| setContentView(R.layout.main); |
| |
| Resources res = getResources(); |
| TabHost tabHost = getTabHost(); |
| |
| tabHost.addTab(tabHost.newTabSpec("tags") |
| .setIndicator(getText(R.string.tab_tags), |
| res.getDrawable(R.drawable.ic_tab_all_tags)) |
| .setContent(new Intent().setClass(this, TagList.class))); |
| |
| tabHost.addTab(tabHost.newTabSpec("starred") |
| .setIndicator(getText(R.string.tab_starred), |
| res.getDrawable(R.drawable.ic_tab_starred)) |
| .setContent(new Intent().setClass(this, TagList.class) |
| .putExtra(TagList.EXTRA_SHOW_STARRED_ONLY, true))); |
| |
| SharedPreferences preferences = getPreferences(Context.MODE_PRIVATE); |
| if (!preferences.getBoolean(PREF_KEY_SHOW_INTRO, false)) { |
| preferences.edit().putBoolean(PREF_KEY_SHOW_INTRO, true).apply(); |
| Intent intent = new Intent(this, AboutActivity.class); |
| startActivity(intent); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| |
| // Restore the last active tab |
| SharedPreferences prefs = getSharedPreferences("prefs", Context.MODE_PRIVATE); |
| getTabHost().setCurrentTabByTag(prefs.getString("tab", "tags")); |
| } |
| |
| @Override |
| public void onResume() { |
| super.onResume(); |
| // Check to see if NFC is on |
| NfcAdapter nfc = NfcAdapter.getDefaultAdapter(); |
| if (nfc == null || !nfc.isEnabled()) { |
| showDialog(DIALOG_NFC_OFF); |
| } |
| } |
| |
| @Override |
| public void onStop() { |
| super.onStop(); |
| |
| // Save the active tab |
| SharedPreferences.Editor edit = getSharedPreferences("prefs", Context.MODE_PRIVATE).edit(); |
| edit.putString("tab", getTabHost().getCurrentTabTag()); |
| edit.apply(); |
| } |
| |
| @Override |
| public Dialog onCreateDialog(int dialogId, Bundle args) { |
| if (dialogId == DIALOG_NFC_OFF) { |
| return new AlertDialog.Builder(this) |
| .setTitle(R.string.dialog_title_nfc_off) |
| .setMessage(R.string.dialog_text_nfc_off) |
| .setPositiveButton(R.string.button_settings, this) |
| .setNegativeButton(android.R.string.cancel, this) |
| .setCancelable(true) |
| .create(); |
| } |
| |
| throw new IllegalArgumentException("Unknown dialog id " + dialogId); |
| } |
| |
| @Override |
| public void onClick(DialogInterface dialog, int which) { |
| if (which == DialogInterface.BUTTON_POSITIVE) { |
| // Thake the user to the wireless settings panel, where they can enable NFC |
| Intent intent = new Intent(Settings.ACTION_WIRELESS_SETTINGS); |
| startActivity(intent); |
| } |
| dialog.dismiss(); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| getMenuInflater().inflate(R.menu.menu, menu); |
| return true; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| switch (item.getItemId()) { |
| case R.id.help: |
| HelpUtils.openHelp(this); |
| return true; |
| |
| default: |
| return super.onOptionsItemSelected(item); |
| } |
| } |
| } |