在android中接收结果

Question

我是 android 的初学者..我在我的应用程序中集成了 qr 扫描仪..问题是我在两个片段中添加了 qr 扫描仪按钮..为了接收我在 activityResult 方法中添加的结果..在我的 mainactivity..还有其他方法吗在android中接收结果而不是OnactivityResult方法..如果不是他们我应该在我的Mainactivty中添加多个onActivityResult方法..任何人都可以帮助我..

below is the my code for onActivityresult
     @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
    IntentResult scanResult =IntentIntegrator.parseActivityResult(requestCode, resultCode, 
                data);
    if (scanResult != null) {

        if (scanResult.getContents() == null) {

            Log.d("ScanFragment", "Cancelled scan");
            Toast.makeText(this, "Cancelled", Toast.LENGTH_SHORT).show();
        } else {

            Toast.makeText(this, " " + scanResult.getContents(), Toast.LENGTH_SHORT).show();


        }

    } else {
        //result fragment
        super.onActivityResult(requestCode, resultCode, data);
    }
    // }

}

Answer 1

static final int FRAGMENT_ONE_REQUEST = 1;  // The request code
static final int FRAGMENT_TWO_REQUEST = 2;  // The request code

然后从片段一中使用它

 startActivityForResult(intent, FRAGMENT_ONE_REQUEST);

然后从片段二中使用它

startActivityForResult(intent, FRAGMENT_TWO_REQUEST);

在每个片段中

@Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if(resultCode == Activity.RESULT_OK) {
       //some code
         if (requestCode == FRAGMENT_ONE_REQUEST) {
       }
    }
}