Android中的桌面快捷方式

一、判断是否已有快捷方式

    private String getAuthorityFromPermission(Context context, String permission){        if (permission == null) return null;        List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS);        if (packs != null) {            for (PackageInfo pack : packs) {                 ProviderInfo[] providers = pack.providers;                 if (providers != null) {                     for (ProviderInfo provider : providers) {                         if (permission.equals(provider.readPermission)) return provider.authority;                        if (permission.equals(provider.writePermission)) return provider.authority;                    }                 }            }        }                return null;    }

private boolean hasShortcut(Context context,String shortCutName)    {        boolean has = false;        final ContentResolver cr = context.getContentResolver();        final String AUTHORITY = getAuthorityFromPermission(context, "com.android.launcher.permission.READ_SETTINGS");        final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/favorites?notify=true");                //确认content Provider中是否有快捷键信息        Cursor c = cr.query(CONTENT_URI,                            new String[] {"title","iconResource" },                            "title=?",                            new String[] {shortCutString.trim()},                             null);        if(c != null && c.getCount() > 0){            has= true ;        }        return has;    }

二、添加快捷方式

private void addShortCut(Context mContext)    {                      boolean has = hasShortcut(mContext, mContext.getString(R.string.str_app_name));        if(has)        {            return;        }        Intent shortCutIntent = null;        int shortCutNameId = R.string.app_name;        int shortCutIconId = R.drawable.app_icon;        String pkg = PACKAGE_NAME;        boolean installed = isInstalledApp(mContext);        if(installed)        {            Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);            resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);            resolveIntent.setPackage(pkg);                      List<ResolveInfo> apps = mContext.getPackageManager().queryIntentActivities(resolveIntent, PackageManager.GET_ACTIVITIES);                        shortCutIntent = new Intent();            if((apps != null) && (apps.size() != 0))            {                shortCutIntent.setComponent(new ComponentName(pkg, apps.get(0).activityInfo.name));            }        }        else         {            shortCutIntent = new Intent(mContext.getApplicationContext(), AppActivity.class);        }                Intent shortcut = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");                  //快捷方式的名称          shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, mContext.getString(shortCutNameId));          shortcut.putExtra("duplicate", false); //不允许重复创建           //快捷方式的图标          ShortcutIconResource iconRes = Intent.ShortcutIconResource.fromContext(mContext.getApplicationContext(), shortCutIconId);          shortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconRes);                  //程序入口        shortCutIntent.setAction(Intent.ACTION_MAIN);        shortCutIntent.addCategory(Intent.CATEGORY_LAUNCHER);        shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortCutIntent);        mContext.sendBroadcast(shortcut);       }

三、删除快捷方式

   private void deleteShortCut(Context mContext)    {        Intent shortcut = new Intent("com.android.launcher.action.UNINSTALL_SHORTCUT");        Intent shortCutIntent = new Intent(mContext.getApplicationContext(), AppActivity.class);        shortCutIntent.setAction(Intent.ACTION_MAIN);        shortCutIntent.addCategory(Intent.CATEGORY_LAUNCHER);        // 快捷方式的名称        shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, mContext.getString(R.string.app_name));        // 注意: ComponentName的第二个参数必须是完整的类名（包名+类名），否则无法删除快捷方式        shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortCutIntent);        mContext.sendBroadcast(shortcut);    }

四、被快捷方式启动的Activity的Intent-filter

            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.DEFAULT" />            </intent-filter>

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