Android 自定义Launcher添加自定义widget，无法更新widget界面

Question

Android 自定义Launcher添加自定义widget，无法更新widget界面,自定义widget在系统launcher上可以更新，系统的widget比如时钟，在自定义launcher上可以更新。

AppWidgetProvider代码如下:

 @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
        super.onUpdate(context, appWidgetManager, appWidgetIds);
        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
        String dateStr = dateFormat.format(new Date());
        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
        views.setTextViewText(R.id.tv_update, dateStr);
        Log.i("TAG","--"+dateStr);
        appWidgetManager.updateAppWidget(new ComponentName(context, WidgetProvider.class),views);
    }

自定义launcher相关的代码如下
onCreate里面创建了 ,

        //得到com.test包名的所有widegt,并且分配一个appwidgetId，保存起来
        mAppWidgetHost = new AppWidgetHost(MainActivity.this, HOST_ID);
        mAppWidgetHost.startListening();
        mAppWidgetManager = AppWidgetManager.getInstance(MainActivity.this);
        List<AppWidgetProviderInfo> providers = mAppWidgetManager.getInstalledProviders();
        for (int i = 0; i < providers.size(); i++) {
            ComponentName provider = providers.get(i).provider;
            if (provider.getPackageName().contains("com.test")) {
                surfAppWidgetList.add(providers.get(i));
                surfAppWidgetIdList.add(mAppWidgetHost.allocateAppWidgetId());
                LogUtil.printlf("-->" + provider.getPackageName());
            }
        }
        //intent里面可以传入
        mAppWidgetIds=new int[surfAppWidgetIdList.size()];

然后循环添加到父布局里面去

AppWidgetHostView hostView = mAppWidgetHost.createView(this, surfAppWidgetIdList.get(i), surfAppWidgetList.get(i));
            addView(hostView);

大概什么问题？

Answer 1

已经解决。需要进行bindAppWidgetId();
而bindAppWidgetId需要系统权限。必须将自身应用提升至系统应用。