title: how to finish activity after picture taken by camera
body: <p>I am using an activity to capture image
  i want to start a finish my activity on picture taken
  on capture button i write following code</p>
  
  <pre><code>btnCapture.setOnClickListener(new OnClickListener() {
              @Override
              public void onClick(View v) {
                  preview.camera.takePicture(shutterCallback, rawCallback,
                          jpegCallback);
                  CameraActivity.this.finish();
              }
          });
  </code></pre>
  
  <p>but my activity is not responding after adding </p>
  
  <p>CameraActivity.this.finish()</p>
  
  <p>Help will be appreciated</p>