Android - 如何在不崩溃应用程序的情况下onCreate启动相机？

Question

我有这个问题，从第一个活动窗口我启动第二个活动窗口，我需要直接看到凸轮预览＆gt;拍摄快照＆gt;在此活动窗口上显示预览。

现在，这是我需要启动它的方式（预期和正确的用户需求方式），但在拍摄照片并返回此窗口后，应用程序几乎就会崩溃。

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      this.imageView = (ImageView)this.findViewById(R.id.picture);
      Button photoButton = (Button) this.findViewById(R.id.capture_btn);
      //photoButton.setOnClickListener(new View.OnClickListener() {

          //@Override
          //public void onClick(View v) {
              Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
              startActivityForResult(cameraIntent, CAMERA_REQUEST); 
         // }
      //});
  }

但是这样它不会崩溃，就这样它的错误用例，导致它变成了我的应用程序的两个按钮按下。

public class MainActivity extends Activity  implements OnClickListener {
  private static final int CAMERA_REQUEST = 1888;
  private static final int PIC_CROP = 0; 
  private ImageView imageView;

  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      this.imageView = (ImageView)this.findViewById(R.id.picture);
      Button photoButton = (Button) this.findViewById(R.id.capture_btn);
      photoButton.setOnClickListener(new View.OnClickListener() {

          //@Override
          public void onClick(View v) {
              Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
              startActivityForResult(cameraIntent, CAMERA_REQUEST); 
          }
      });
  }

  protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  
        Bitmap photo = (Bitmap) data.getExtras().get("data"); 
        imageView.setImageBitmap(photo);
    }  
  }

  @Override
  public void onClick(View arg0) {
    // TODO Auto-generated method stub

  } 

}