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

Question

是否有任何解决方法可以让我们android.support.v7.app.AlertDialog在Robolectric 中进行测试？

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

Answer 1

尝试下面的方法

    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，但无法验证标题或消息 AFAIK。