java - Android cannot finish activity -

i'm writing app using opencv android library. i've created cameraactivity want call, , return image.

public class cameraactivity extends activity implements cvcameraviewlistener2 {  private baseloadercallback mloadercallback = new baseloadercallback(this) {     @override     public void onmanagerconnected(int status) {         switch (status) {         case loadercallbackinterface.success: {             log.i(tag, "opencv loaded successfully");             mopencvcameraview.enableview();         }             break;         default: {             super.onmanagerconnected(status);         }             break;         }     } };  @override public void oncreate(bundle savedinstancestate) {     ...      button snap = (button) findviewbyid(r.id.snap);     snap.setonclicklistener(new onclicklistener() {         public void onclick(view v) {             processvideo();         }     });     snap.setonlongclicklistener(new onlongclicklistener() {         @override         public boolean onlongclick(view v) {             processpicture();             return true;         }     }); }  @override public void onpause() {     ...  }  @override public void onresume() {     ... }  public void ondestroy() {     ... }  public void oncameraviewstarted(int width, int height) {     ... }  @override public void oncameraviewstopped() {     ... }   public mat oncameraframe(cvcameraviewframe cvf) {     // grab frame     cvf.rgba().copyto(frame);      // filter frame     filterlaser();      // retrieve contour center point     contourlaser();      // draw      draw();      // display result.     return cvf.rgba(); }  private void draw(){     ... }  private void filterlaser(){     ... }  void processvideo(){     ... }  void processpicture(){     intent result = new intent();          if(frame != null)     {         // convert processed mat bitmap         bitmap resultbitmap = bitmap.createbitmap(frame.cols(),  frame.rows(),bitmap.config.argb_8888);;         utils.mattobitmap(frame, resultbitmap);          setresult(activity.result_ok, result);         result.putextra("bitmap", resultbitmap);     } else {         setresult(activity.result_canceled); // no frame found     }      log.d("lastpoint", "finished");     finish(); } }; 

this activity gets called using following code in mainactivity.

  button reply = (button) findviewbyid(r.id.buttonreply);     reply.setonclicklistener(new onclicklistener() {         @override         public void onclick(view v) {             intent = new intent(getapplicationcontext(), cameraactivity.class);             startactivityforresult(i, camerarequest);         }     }); 

and result extracted in mainactivity.

@override public void onactivityresult(int requestcode, int resultcode, intent data) { log.d("lastpoint", "writing");

    switch(requestcode) {         case (camerarequest) :              if (resultcode == activity.result_ok) {                 bitmap bmp = (bitmap) data.getparcelableextra("bitmap");                  writebitmap(bmp);             }             break;     } } 

"finished" gets printed logcat. "writing" isn't. why can't exit cameraactivity? view isn't closing either.

the problem line:

    result.putextra("bitmap", resultbitmap); 

solved saving picture sdcard in cameraactivity , passing uri through result intent.