Start Activity inside onReceive BroadcastReceiver

Question

I want to start an activity in my onReceive() method.

package com.splashscreenactivity;  import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.telephony.SmsMessage; import android.widget.Toast;  public class SMSReceiver extends BroadcastReceiver {      public static String trigger_message = "";      @Override     public void onReceive(Context context, Intent intent) {         // ---get the SMS message passed in---         Bundle bundle = intent.getExtras();         SmsMessage[] msgs = null;         String str = "";         if (bundle != null) {             // ---retrieve the SMS message received---             Object[] pdus = (Object[]) bundle.get("pdus");             msgs = new SmsMessage[pdus.length];             for (int i = 0; i < msgs.length; i++) {                 msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);                 str += "SMS from " + msgs[i].getOriginatingAddress();                 str += " :";                 trigger_message = msgs[i].getMessageBody().toString();                 str += trigger_message;                 str += "\n";             }             // ---display the new SMS message---             Toast.makeText(context, str, Toast.LENGTH_SHORT).show();             if (trigger_message.equals("dx")) {                 Toast.makeText(context, "I am triggered", Toast.LENGTH_LONG)                         .show();                 // /////////////////////////                 // i want to start here                 // ////////////////////////                 // MainScreenActivity.trigger="Now";                 // Intent i = new Intent(context,GPS.class);                 // i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                 // context.startActivity(i);             } else {                 Toast.makeText(context, "I am not triggered,  Bbyz!!!",                         Toast.LENGTH_LONG).show();             }         }     } } 

here is GPS.class

package com.splashscreenactivity;  import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.telephony.SmsManager; import android.telephony.SmsMessage; import android.widget.TextView; import android.widget.Toast;  public class GPS extends Activity implements LocationListener {      TextView latitude, logitude;      /** Called when the activity is first created. */     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.gps);         LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);         lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,                 this);         Toast.makeText(this, "i m started", Toast.LENGTH_LONG);         // latitude = (TextView)findViewById(R.id.txtLat);         // logitude = (TextView)findViewById(R.id.txtLongi);         // latitude.setText("Loading...");         // logitude.setText("Loading...");     }      String LATTITUDE;     String LOGITUDE;      @Override     public void onLocationChanged(Location location) {         double lat = location.getLatitude();         double lag = location.getLongitude();         LATTITUDE = Double.toString(lat);         LOGITUDE = Double.toString(lag);         // latitude.setText(LATTITUDE);         // logitude.setText(LOGITUDE);         // SmsManager sm = SmsManager.getDefault();         // // here is where the destination of the text should go         // String number = "5556";         // sm.sendTextMessage(number, null,         // "latitude="+latitude.getText()+"\nlongitude="+logitude.getText(),         // null, null);     }      @Override     public void onProviderDisabled(String arg0) {     }      @Override     public void onProviderEnabled(String arg0) {     }      @Override     public void onStatusChanged(String arg0, int arg1, Bundle arg2) {     }     // /** Register for the updates when Activity is in foreground */     // @Override     // protected void onResume()     // {     // super.onResume();     // lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f,     // this);     // }     //     // /** Stop the updates when Activity is paused */     // @Override     // protected void onPause() {     // super.onPause();     // lm.removeUpdates(this);     // } } 

Answer 1

You have context passed as parameter to onRecieve() method, so just use:

 @Override     public void onReceive(Context context, Intent intent) {         //start activity         Intent i = new Intent();         i.setClassName("com.test", "com.test.MainActivity");         i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);         context.startActivity(i);     } 

It works, of course you have to change package and activity class name to your own.