使用浓缩咖啡在回收站视图中单击 child 的按钮

Question

在 activity 中，我有一个包含 2 个文本视图和 2 个按钮的自定义回收器视图，如下所示。

回收站图标按钮的 ID 是 deleteButton。我想在浓缩咖啡测试中访问这个按钮，这样我就可以模拟点击。

我尝试过但失败的两种方法如下所示：

        onView(withId(R.id.basket))
                .perform(actionOnItemAtPosition(4, click() ));

        onView(withText("Cherry"))
                .perform(
                        RecyclerViewActions.actionOnItem(
                                hasDescendant(withId(R.id.deleteButton)),
                                ViewActions.click()
                        )
                );

提前感谢您的帮助。

Answer 1

单击 RecyclerView 项视图内的视图的一种方法是创建自定义视图操作：

public static ViewAction actionOnItemView(Matcher<View> matcher, ViewAction action) {

    return new ViewAction() {

        @Override public String getDescription() {
            return String.format("performing ViewAction: %s on item matching: %s", action.getDescription(), StringDescription.asString(matcher));
        }

        @Override public Matcher<View> getConstraints() {
            return allOf(withParent(isAssignableFrom(RecyclerView.class)), isDisplayed());
        }

        @Override public void perform(UiController uiController, View view) {
            List<View> results = new ArrayList<>();
            for (View v : TreeIterables.breadthFirstViewTraversal(view)) {
                if (matcher.matches(v)) results.add(v);
            }
            if (results.isEmpty()) {
                throw new RuntimeException(String.format("No view found %s", StringDescription.asString(matcher)));
            } else if (results.size() > 1) {
                throw new RuntimeException(String.format("Ambiguous views found %s", StringDescription.asString(matcher)));
            }
            action.perform(uiController, results.get(0));
        }
    };
}

然后在您的 RecyclerView 上使用 RecyclerViewActions 之一，然后 actionOnItemView 作为项目视图的后续操作（如果成功）：

ViewAction itemViewAction = actionOnItemView(withId(R.id.deleteButton), click());
onView(withId(your_recycler_view)).perform(actionOnItemAtPosition(4, itemViewAction));

使用浓缩咖啡在回收站视图中单击 child 的按钮

Performing click on a button of a child in recycler view using espresso

java

android

automated-tests

android-espresso