主题不适用于Android上的DialogFragment

Question

我正在将旧的对话框切换到DialogFragment，但主题和样式似乎不起作用。

[...]
import android.support.v4.app.DialogFragment;
[...]

public class AlertDialogFragment extends DialogFragment {

  public static AlertDialogFragment newInstance(int id) {

    AlertDialogFragment f = new AlertDialogFragment();
    Bundle args = new Bundle();
    args.putInt("id", id);
    f.setArguments(args);

 }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    int style = DialogFragment.STYLE_NORMAL, theme = 0;
    theme = android.R.style.Theme_Holo_Dialog_NoActionBar;
    setStyle(style, theme);     
  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {

    mId = getArguments().getInt("id");
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
        .setTitle(mTitle)
        .setMessage(mMessage)
        .setPositiveButton(getString(R.string.btn_ok), new DialogInterface.OnClickListener() {      
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dismiss();                  
            }
        });
        return builder.create();
    }

Answer 1

您不应该在支持库中使用AlertDialog.Builder(Context，int)构造函数，因为它只在API11之后才可用。

要为对话框设置主题，请使用如下所示的ContextThemeWrapper：

ContextThemeWrapper context = new ContextThemeWrapper(getActivity(), android.R.style.Theme_Holo_Dialog_NoActionBar);
AlertDialog.Builder builder = new AlertDialog.Builder(context);