23 展讯Sprd设置-电池-识别桌面小部件

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/su749520/article/details/84342654

1. 目的

appwidget 主要根据广播进行传递，如果拦截了会影响小部件的数据更新，一般通过下面的action传递事件，即不能进行拦截

android.appwidget.action.APPWIDGET_ENABLED
android.appwidget.action.APPWIDGET_UPDATE
android.appwidget.action.APPWIDGET_DELETED

2. 拦截桌面小部件

    if (intent != null
        && "android".equals(callerApp)) {
        String action = intent.getAction();
        if (action != null && action.startsWith("android.appwidget.action.")) //AppWidget action
            return true;
    }

3. 应用层识别

3.1 获取所有的桌面小部件

    public static HashMap<String, ArrayList<String>> getAppWidgetList(Context mContext) {
        HashMap<String, ArrayList<String>> result = new HashMap<String, ArrayList<String>>();

        AppWidgetManager mAppWidgetManager = AppWidgetManager.getInstance(mContext);
        List<AppWidgetProviderInfo> providers = mAppWidgetManager.getInstalledProviders();
        if (providers != null && !providers.isEmpty()) {
            for (AppWidgetProviderInfo info : providers) {
                ComponentName cpName = info.provider;
                String packageName = cpName.getPackageName();
                String className = cpName.getClassName();

                if (result != null && result.containsKey(packageName)) {
                    result.get(packageName).add(className);
                    Log.d(TAG, "getAppWidgetList append packageName = " + packageName + ", className = " + className);
                } else {
                    ArrayList<String> classNameList = new ArrayList<>();
                    classNameList.add(className);
                    result.put(packageName, classNameList);
                    Log.d(TAG, "getAppWidgetList add packageName = " + packageName + ", className = " + className);
                }
            }
        }

        return result;
    }

3.2 获取luncher数据库中的桌面小部件

    /**
     * @param context
     * @return <uses-permission
     * android:name="com.android.launcher3.permission.READ_SETTINGS"/>
     */
    public static Map<String, String> getLauncher3WidgetInfo(Context context) {

        final Uri widgetUri = Uri.parse("content://" + "com.android.launcher3.settings" + "/" + "favorites");

        Cursor cursor = null;
        Map<String, String> widgetList = new HashMap<String, String>();

        try {
            cursor = context.getContentResolver().query(widgetUri, new String[]{"itemType", "appWidgetProvider"}, "itemType" + "=?", new String[]{"4"}, null);
            if (cursor != null) {
                while (cursor.moveToNext()) {
                    String appWidgetProvider = cursor.getString(cursor.getColumnIndex("appWidgetProvider"));
                    String packageName = appWidgetProvider.split("/")[0];
                    if (widgetList != null && widgetList.containsKey(packageName)) {
                        // do nothing
                    } else {
                        widgetList.put(packageName, packageName);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (cursor != null) {
                cursor.close();
                cursor = null;
            }
        }
        return widgetList;
    }