Android开发中如何为程序创建桌面快捷方式

private void addShortcut() {    Intent shortcutIntent = new Intent(        "com.android.launcher.action.INSTALL_SHORTCUT");    // 快捷方式的名称    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME,        getString(R.string.app_name));    shortcutIntent.putExtra("duplicate", false); // 不允许重复创建        // 注意: ComponentName的第二个参数必须加上点号(.)，否则快捷方式无法启动相应程序    ComponentName comp = new ComponentName(this.getPackageName(),        this.getPackageName() + "." + this.getLocalClassName());    Intent intent = new Intent(Intent.ACTION_MAIN);    intent.setAction("android.intent.action.MAIN");    intent.addCategory("android.intent.category.LAUNCHER");    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT,        intent.setComponent(comp));    // 快捷方式的图标    ShortcutIconResource iconRes = Intent.ShortcutIconResource.fromContext(        this, R.drawable.icon_launcher);    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconRes);    sendBroadcast(shortcutIntent);}//判断是否已经创建快捷方式private boolean hasShortcut() {    boolean isInstallShortcut = false;    final ContentResolver resolver = this.getContentResolver();    final String AUTHORITY;    if (android.os.Build.VERSION.SDK_INT < 8) {      AUTHORITY = "com.android.launcher.settings";    } else {      AUTHORITY = "com.android.launcher2.settings";    }    final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY        + "/favorites&#63;notify=true");    Cursor c = resolver        .query(CONTENT_URI,            new String[] { "title", "iconResource" },            "title=&#63;",            new String[] { this.getString(R.string.app_name).trim() },            null);    if (c != null && c.getCount() > 0) {      isInstallShortcut = true;    }    return isInstallShortcut;}