显示对话框 fragment 时未调用 Android dispatchKeyEvent

Question

当我的对话框 fragment 是hide时，dispatchKeyEvent工作正常

@Override
public boolean dispatchKeyEvent(KeyEvent event) {

    Toast.makeText(FragmentPlayer.this, "test: called", Toast.LENGTH_SHORT).show();

    return super.dispatchKeyEvent(event);

}

但是当我的对话框 fragment 是show时，dispatchKeyEvent没有被调用

MyDialogFragment mFragment = new MyDialogFragment();
mFragment.show(getSupportFragmentManager(), "MyDialog");

为什么？

Answer 1

无需将 DialogFragment 代码更改为 Dialog，您可以这样做(以防万一)。使用 OnKeyListener 将解决您的问题。

public class BaseDialogFragment extends AppCompatDialogFragment {

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    getDialog().setOnKeyListener(new DialogInterface.OnKeyListener() {
        @Override
        public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
            /* Your logic, you get the KeyEvent*/
            return false;
        }
    });
}