ShadowAlertDialog.getLatestAlertDialog() returns null for an

Question

有什么解决方法可以让我们在 Robolectric 中测试android.support.v7.app.AlertDialog吗？

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

Answer 1

试试下面

    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

    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。