为结果启动 BottomSheetFragment

Question

我想从 BottomSheetFragment 获取结果。我试图通过 getActivity().setResult(Activity.RESULT_OK, null); inside

来做到这一点

    @Override
public void onDismiss(DialogInterface dialog) {
    getActivity().setResult(Activity.RESULT_OK, null);
    super.onDismiss(dialog);
}

但未调用 activity 的 onActivityResult 方法。我做错了什么？

    @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Toast.makeText(this, requestCode, Toast.LENGTH_SHORT).show();
    super.onActivityResult(requestCode, resultCode, data);
}

对话框启动方式

BottomSheetDialogFragment bottomSheetFragment = new BottomSheetDialogFragment();
            Bundle bundle = new Bundle();
            bottomSheetFragment.setArguments(bundle);
            bottomSheetFragment.show(getSupportFragmentManager(), bottomSheetFragment.getTag());

Answer 1

onActivityResult() 用于从另一个 Activity 获取结果。

更多相关信息：https://developer.android.com/training/basics/intents/result

如果您想将一些数据从 Fragment 发送到 Activity，您可以通过定义接口或调用 Activity 中的方法来实现，方法是将其转换为特定的 [=19] =].

class MainActivity extends AppCompatActivity {

 @Override
 protected void onCreate(@Nullable Bundle savedInstanceState) {
  YourBottomSheetDialogFragment bottomSheetFragment = new YourBottomSheetDialogFragment();
  Bundle bundle = new Bundle();
  bottomSheetFragment.setArguments(bundle);
  bottomSheetFragment.show(getSupportFragmentManager(), bottomSheetFragment.getTag());
 }

 public void setResultFromFragment(String data) {
  ...
 }
}

/**
* Calling Activity's method from Fragment
*/
class YourBottomSheetDialogFragment extends BottomSheetDialogFragment {

 @Override
 public void onCreate(@Nullable Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  ((MainActivity) getActivity()).setResultFromFragment("");
 }
}

Answer 2

我决定按照 DEVV911

给我的建议实现界面

interface OnFinishedListener {

        void onFinished(ArrayList<TestCard> acceptList, ArrayList<TestCard> rejectList);

        void onFailure(Throwable t);
    }

添加到dialog的构造方法中

private TestActivityContract.OnFinishedListener onFinishedListener;

BottomSheetFragment(TestActivityContract.OnFinishedListener onFinishedListener) {
    this.onFinishedListener = onFinishedListener;
}

并调用onDismiss中的onFinished方法

    @Override
public void onDismiss(DialogInterface dialog) {
    super.onDismiss(dialog);
    onFinishedListener.onFinished(acceptList, rejectList);
}

为结果启动 BottomSheetFragment

Start BottomSheetFragment for result

java

android

android-fragments

android-dialogfragment

bottom-sheet