android - ShadowAlertDialog.getLatestAlertDialog()对于android.support.v7.app.AlertDialog返回null

有什么变通办法可以让我们测试中的android.support.v7.app.AlertDialog Robolectric 吗？

   someActivity.findViewById(R.id.alet_btn).performClick();
   AlertDialog alert = ShadowAlertDialog.getLatestAlertDialog();
   ShadowAlertDialog shadowAlertDialog = Shadows.shadowOf(alert);
   assertThat(shadowAlertDialog.getTitle()).isEqualTo("Hello");

最佳答案

尝试以下

    List shownDialogs = ShadowAlertDialog.getShownDialogs();
    if (shownDialogs.get(0) instanceof AlertDialog) {
    AlertDialog dialog = (android.support.v7.app.AlertDialog) shownDialogs.get(0);
    assertThat(dialog).isShowing();
    dialog.getButton(AlertDialog.BUTTON_NEGATIVE).performClick();
    }

或者

    if (ShadowAlertDialog.getLatestDialog() instanceof AlertDialog) {
        AlertDialog dialog = (android.support.v7.app.AlertDialog) ShadowAlertDialog.getLatestDialog();
        assertThat(dialog).isShowing();
        dialog.getButton(AlertDialog.BUTTON_POSITIVE).performClick();
    }

它允许您单击按钮，但不能验证标题或消息AFAIK。