How to update the UI of Activity from BroadCastReceiver

Question

I am learning Android concepts Activity and BroadCastReceiver. I want to update the content of Activity from the Br

Answer 1

try like this it may help you.

Define this method in activity's oncreate method in which you want to update ui,

    BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
                @Override
                public void onReceive(Context context, Intent intent) {
                    //your code to update ui
                }
            };
   LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver, new IntentFilter("giveyourappname"));

Define this action at place from where you want to update ui,

try{
        ActivityManager am = (ActivityManager) this .getSystemService(ACTIVITY_SERVICE);
        List taskInfo = am.getRunningTasks(1);
        ComponentName componentInfo = taskInfo.get(0).topActivity;
        Log.d("Activity", "Current Activity ::" + taskInfo.get(0).topActivity.getClassName());
        Log.d("Package", "Package Name :  "+ componentInfo.getPackageName());

        if(componentInfo.getPackageName().equals("your application package name")){
             Intent intent = new Intent("giveyourappname");
                //add data you wnat to pass in intent
                LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
        }
    }catch(Throwable e){
        e.printStackTrace();
    }