startActivityForResult未运行

Question

为什么onActivityResult没有运行？

有人能帮上忙吗？

我只有一个类名是MainActivity

这是我的代码

public class MainActivity  extends Activity{

public static final int CROP = 1;
private static final String TAG = MainActivity.class.getCanonicalName();
private ImageView imgView;
private Button selectBtn;

public void onCreate(Bundle savedInstanceState){

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    imgView = (ImageView)findViewById(R.id.imgView);
    hasilET = (EditText)findViewById(R.id.hasilET);
    selectBtn = (Button)findViewById(R.id.selectBtn);
    selectBtn.setOnClickListener(new ClickSelect());

}
public class ClickSelect implements View.OnClickListener{

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        Log.v(TAG, "CLICK");
        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.setType("image/*");
        i.putExtra("crop", "true");
        i.putExtra("aspectX", 0);
        i.putExtra("aspectY", 0);
        i.putExtra("outputX", 200);
        i.putExtra("outputY", 150);
        i.putExtra("return-data", true);
        startActivityForResult(i, CROP);            
    }

    public void onActivityResult(int requestCode, int resultCode, Intent data){
        Log.v(TAG, "crop");
        Bitmap bmp;
        if(requestCode==1){
            if(data != null){
                Bundle extras = data.getExtras();
                bmp = extras.getParcelable("data");
                imgView.setImageBitmap(bmp);                    
            }
        }
    }

}

}

Answer 1

Jsut在快速浏览代码之后：

似乎是正确的，如果你将你的裁剪替换成

startActivityForResult(i, CROP);

有数字吗？A使用相同的数字

  if(requestCode==CROP)

也许可以删除这一行：

 i.putExtra("crop", "true")

Answer 2

您应该在MainActivity类中重写onActivityResult()

将onActivityResult()从类ClickSelect移至MainActivity

使用此示例：Example

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (requestCode == CROP) {
    if (resultCode == RESULT_OK) {
    ...
    }
  }