Java tutorial
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- * ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Android code. * * The Initial Developer of the Original Code is Mozilla Foundation. * Portions created by the Initial Developer are Copyright (C) 2011 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Vladimir Vukicevic <vladimir@pobox.com> * Wes Johnston <wjohnston@mozilla.com> * Mark Finkle <mfinkle@mozilla.com> * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ //@line 41 "/Users/satyanarayan/project/fennec/mobile/android/base/LauncherShortcuts.java.in" package org.mozilla.fennec_satyanarayan; import java.io.*; import java.util.*; import org.json.*; import org.mozilla.gecko.*; import android.os.*; import android.content.*; import android.app.*; import android.text.*; import android.util.*; import android.widget.*; import android.view.*; import android.graphics.*; public class LauncherShortcuts extends Activity { private ArrayList<HashMap<String, String>> mWebappsList; private File mWebappsFolder; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.launch_app_list); final Intent intent = getIntent(); final String action = intent.getAction(); if (Intent.ACTION_CREATE_SHORTCUT.equals(action)) { // Doing it as a background task, as it involves file access new FetchWebApps().execute(); } } public void onListItemClick(int id) { HashMap<String, String> map = mWebappsList.get(id); String uri = map.get("uri").toString(); String title = map.get("title").toString(); String appKey = map.get("appKey").toString(); String favicon = map.get("favicon").toString(); File manifestFile = new File(mWebappsFolder, appKey + "/manifest.json"); // Parse the contents into a string String manifestJson = new String(); try { BufferedReader in = new BufferedReader(new FileReader(manifestFile)); String line = new String(); while ((line = in.readLine()) != null) { manifestJson += line; } } catch (IOException e) { } try { JSONObject manifest = (JSONObject) new JSONTokener(manifestJson).nextValue(); uri += manifest.getString("launch_path"); } catch (JSONException e) { } Intent shortcutintent = new Intent("org.mozilla.gecko.WEBAPP"); shortcutintent.setClass(this, App.class); shortcutintent.putExtra("args", "--webapp=" + uri); Intent intent = new Intent(); intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, title); intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutintent); DisplayMetrics dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); int size; switch (dm.densityDpi) { case DisplayMetrics.DENSITY_MEDIUM: size = 48; break; case DisplayMetrics.DENSITY_HIGH: size = 72; break; default: size = 72; } Bitmap bitmap = BitmapFactory.decodeFile(favicon); if (bitmap != null) { Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, size, size, true); intent.putExtra(Intent.EXTRA_SHORTCUT_ICON, scaledBitmap); } // Now, return the result to the launcher setResult(RESULT_OK, intent); finish(); } private class FetchWebApps extends AsyncTask<Void, Void, Void> { @Override protected Void doInBackground(Void... unused) { mWebappsList = null; Context context = getApplicationContext(); GeckoProfile profile = GeckoProfile.get(context); String webappsJson = null; try { webappsJson = profile.readFile("webapps" + File.separatorChar + "webapps.json"); } catch (IOException ioe) { // unable to load the file, leave webappsJson as null } if (TextUtils.isEmpty(webappsJson)) return null; mWebappsList = new ArrayList<HashMap<String, String>>(); try { JSONObject webApps = (JSONObject) new JSONTokener(webappsJson).nextValue(); @SuppressWarnings("rawtypes") Iterator appKeys = webApps.keys(); HashMap<String, String> map; while (appKeys.hasNext()) { String appKey = (String) appKeys.next(); JSONObject app = webApps.getJSONObject(appKey); map = new HashMap<String, String>(); map.put("appKey", appKey); map.put("favicon", mWebappsFolder.getPath() + "/" + appKey + "/icon.png"); map.put("title", app.getString("title")); map.put("uri", app.getString("appURI")); mWebappsList.add(map); } } catch (JSONException e) { } return null; } @Override protected void onPostExecute(Void unused) { if (mWebappsList != null) { AlertDialog.Builder builder; if (Build.VERSION.SDK_INT >= 11) { builder = new AlertDialog.Builder(LauncherShortcuts.this, AlertDialog.THEME_HOLO_LIGHT); } else { builder = new AlertDialog.Builder(LauncherShortcuts.this); } builder.setTitle(R.string.launcher_shortcuts_title); builder.setAdapter( new SimpleAdapter(LauncherShortcuts.this, mWebappsList, R.layout.launch_app_listitem, new String[] { "favicon", "title" }, new int[] { R.id.favicon, R.id.title }), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.dismiss(); onListItemClick(id); finish(); } }); builder.setOnCancelListener(new DialogInterface.OnCancelListener() { public void onCancel(DialogInterface dialog) { dialog.dismiss(); finish(); } }); builder.create().show(); } else { Toast.makeText(LauncherShortcuts.this, R.string.launcher_shortcuts_empty, Toast.LENGTH_LONG).show(); finish(); } } } }