Question

我正在为结果启动一个活动

startActivityForResult(new Intent(this,ActivityA.class),REQUEST_CODE)

ActivityA已启动。在ActivityA上有一个gridview，我想在调用者Activity的方法onActivityResult（int requestCode，int resultCode，Intent data）中获取所选图像的位置但是我没有办法做到这一点

Answer 1

在活动A中，

onItemClick()

的

GridView

//create a new intent...
Intent intent = new Intent();
intent.putInt("position",position);
setResult(RESULT_OK,intent);
//close this Activity...
finish();

在来电活动中，

  @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent intent){
        super.onActivityResult(requestCode, resultCode, intent);
        Bundle extras = intent.getExtras();
        if(extras != null)
        int position = extras.getInt("position");
    }

Answer 2

要唯一标识您的startActivityForResult（）回调，请检查Activity A的相似性和成功之处。请按照以下步骤操作：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent){
    super.onActivityResult(requestCode, resultCode, intent);
    if(requestCode==REQUEST_CODE)
      {
        if(resultCode==RESULT_OK)
          {
              Bundle extras = intent.getExtras();
              if(extras != null)
              int position = extras.getInt("position");
          }
       }
}

将自定义Activity作为startActivityForResult调用

2 个答案: