How to start a method in a mainactivty using receiver?

Question

I'm using BOOT_UP_COMPLETE BroadcastReceiver in my program. I need to start a method from my MainActivity (I found only to start an Activity or Service from a BroadcastReceiver).

In my code below, I need to start InitMorning method.

How to code it?

    public class MainActivity extends Activity {
        //private Context mContext;
        public static int isMasterThreadRunning = 0;    
        Intent intent = null;
        private boolean isActivityExitInProgress = false;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            Log.e("MainActivity : onCreate : Enter");
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            if(isMasterThreadRunning == 1)
            {
                SetButtonTitle("Stop Monitoring");
            }
            else
            {
              isMasterThreadRunning = 0;
            }
            Log.e("MainActivity : onCreate : Exit");  

        }



        /** Called when the user clicks the Send button */
        public void startMonitoring(View view) {
            if(isActivityExitInProgress == false)
            {
              if(isMasterThreadRunning == 0) {
                InitMonitoring();
              }
              else if(isMasterThreadRunning == 1) {
                stopMonitoring();
                isActivityExitInProgress = false;
              }
            }
          } 

        public void SetButtonTitle(String buttonTitle)
        {
          Button start_monitoring_button = (Button)findViewById(R.id.button_start_monitoring);
          start_monitoring_button.setText(buttonTitle);
          if(buttonTitle == "Stop Monitoring")
          {
            start_monitoring_button.setEnabled(false);
          }
        }

        public void InitMonitoring()
        {
            Log.e("MainActivity : startMonitoring : Going to start master thread : Enter");
            MasterThreadService.mContext = getBaseContext();
            SetButtonTitle("Stop Monitoring");
            intent = new Intent(this, MasterThreadService.class);
            startService(intent);

            isMasterThreadRunning = 1;
            this.moveTaskToBack(true);
            Log.e("MainActivity : startMonitoring : Going to start master thread : Exit");
        }

        public void stopMonitoring()
        {
          Log.e("MainActivity : stopMonitoring : Enter");
          isActivityExitInProgress = true;
          SetButtonTitle("Start Monitoring");
          Log.e("MainActivity : startMonitoring : Calling exitFromApp");
          // Make a call to exit and clean everything : exitFromApp
          MasterThreadService.exitFromApp();
          if(intent == null)
          {
              Log.e("MainActivity : stopMonitoring : NULL POINTER ACCESS NEED TO INVESTIGATE");
          }
          else
          {
              stopService(intent);
          }
          isMasterThreadRunning = 0;
          Log.e("MainActivity : stopMonitoring : Exit");
        }

        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
            return true;
        }

    }

@ Fllo thanks for your help.but i didnt receive my solution yet :( — saravana, Mar 23 '14 at 13:10
@Fllo..thank you very much..yes its works :)i dont have reputation dude.. — saravana, Mar 25 '14 at 14:01
@Fllo i need to launch a application in android without any user interface..is it possible?when launcher icon pressed the the app should be started..do you have any suggestions? or if you have any source code example provide me. — saravana, Mar 25 '14 at 14:09
I don't understand clearly your question. But it seems you try to do this: http://stackoverflow.com/q/2704084/2668136 or this: http://stackoverflow.com/questions/526074/android-activity-with-no-gui.. If you cant achieve it, post another question ^^ — Blo, Mar 25 '14 at 14:38

score 0 · Answer 1 · answered Mar 23 '14 at 13:23

0

Try making a static reference. Change

public void InitMonitoring()

To

public static void InitMonitoring()

Then call the method from your service like:

MainActivity.InitMonitoring();

This is how I would do it. Don't know if it's the best way though.

answered Mar 23 '14 at 13:23

Aashir

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if i change it to static then the errors say to modify all to static.it says not be able to reference non-static variables. – saravana Mar 23 '14 at 13:40

score 0 · Accepted Answer · edited May 23 '17 at 10:26

As I can read on it, you need to attach your Activity in your BroadcastReceiver.

You must to create your BroadcastReceiver dynamically. Then, use setMainActivityHandler(MainActivity) method in your Activity when you define and call the BroadcastReceiver and attach your Activity inside the receiver class with setMainActivityHandler(MainActivity mainactivity) method. Finally, call your Activity method with the following: mainactivity.methodInActivity();. This should do the trick.

You can find how do this on Call an activity method from a BroadcastReceiver class and you have another example on Call activity method from broadcast receiver.

Hope this helps.

How to start a method in a mainactivty using receiver?

2 Answers2