如何使用tablayout在viewpager中设置当前标签 [英] How to set current tab in viewpager with tablayout

问题描述

我有一个自定义viewpager(由于某些原因禁用了滑动)，并且正在使用tablayout.内容根据选择的选项卡而变化.我想使用浓缩咖啡进行测试: 1)点击一个特定的标签 2)检查选项卡特定页面中的某些数据 我怎样才能做到这一点.我是特浓咖啡的新手

I have a custom viewpager (with swiping disabled for reasons) working with a tablayout. The content changes based on which tab is selected. I want to test this using espresso: 1) Click on a particular tab 2) Check some data in a particular page of the tab How can I do that. I am a novice to espresso

推荐答案

有多种方法，一种简单的方法是通过选项卡标题选择元素，我使用以下代码:

There are several ways of doing this, an easy one is to select the element by the tab title, I use this code:

Matcher<View> matcher = allOf(withText("TAB TITLE"),
            isDescendantOfA(withId(R.id.customTab)));
onView(matcher).perform(click());
SystemClock.sleep(800); // Wait a little until the content is loaded

您只需要使匹配器适合您的布局即可. 然后，检查内容.

You only have to adapt the matcher to your layout. Then, check the content.

例如:

onView(withId(R.id.someId)).check(matches(isCompletelyDisplayed()));

或:

onView(withText(R.string.someText)).check(matches(isCompletelyDisplayed()));

您可以在指定视图匹配器部分中找到示例:

You can find examples here in the Specifying a View Matcher section: http://developer.android.com/intl/es/training/testing/ui-testing/espresso-testing.html

如果您使用RecyclerView来显示选项卡的内容，请查看以下内容: ViewPager中的Espresso RecyclerView

If you are using a RecyclerView to show the content of the tabs have a look at this: Espresso RecyclerView inside ViewPager

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