java - DialogFragment 无法使用 1 个按钮。

Question

为什么我的代码不起作用？

我需要带有 1 个按钮的dialogFragment。

<小时/>

我有两门课:

   public class MyAlertDialogFragment extends DialogFragment {

 static DialogFragment newInstance(int num) {
        MyAlertDialogFragment f = new MyAlertDialogFragment();

        // Supply num input as an argument.
        Bundle args = new Bundle();
        args.putInt("num", num);
        f.setArguments(args);

        return f;
    }


 public View onCreateView(LayoutInflater inflater, ViewGroup container,
         Bundle savedInstanceState) {
     View v = inflater.inflate(R.layout.alertdialog, container, false);
     Button button = (Button)v.findViewById(R.id.button1);

     return v;
 }

}

<小时/>

和 Activity :

   public class DialogFragmentActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
showDialog();
}

void showDialog() {
    FragmentTransaction ft = getFragmentManager().beginTransaction();
    DialogFragment newFragment = MyAlertDialogFragment.newInstance(1);
    newFragment.show(ft, "dialog");
}

    }   

你如何完成这个 fragment ？

Answer 1

不要重写onCreateView，重写onCreateDialog:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder alert = new AlertDialog.Builder(getActivity())
            .setPositiveButton(android.R.string.ok, null);
    return alert.create();
}