android - 从 Fragment 开始ActivityForResult() 并完成子 Activity，不会在 Fragment 中调用 onActivityResult()

Question

FirstActivity.Java 有一个 FragmentA.Java 调用 startActivityForResult()。SecondActivity.Java 调用 finish() 但 onActivityResult 永远不会被调用用 FragmentA.Java 编写。

FragmentA.Java 代码:

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    // some code
    Intent i = new Intent(getActivity(), SecondActivity.class);
    i.putExtra("helloString", helloString);
    getActivity().startActivityForResult(i, 1);
  }

  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    getActivity();
    if(requestCode == 1 && resultCode == Activity.RESULT_OK) {
       //some code
    }
  }

SecondActivity.Java 代码:

  @Override
  protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       //some code
       Intent returnIntent = new Intent();
       returnIntent.putExtra("result", result);                          

       setResult(Activity.RESULT_OK,returnIntent);     
       finish();
  }

我已尝试调试代码，但 onAcitvityResult() 从未被调用。

Answer 1

您必须在 FirstActivity.Java 中编写 onActivityResult()，如下所示

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

所以这将调用你 fragment 的 onActivityResult()

编辑:解决方法是将getActivity().startActivityForResult(i, 1);替换为startActivityForResult(i, 1);