ViewAction

public interface ViewAction

Known Indirect Subclasses AdapterDataLoaderAction, AtomAction<E>, CloseKeyboardAction, EditorAction, EnableJavascriptAction, GeneralClickAction, GeneralSwipeAction, KeyEventAction, OpenLinkAction, RecyclerViewActions.PositionableRecyclerViewAction, ReplaceTextAction, ScrollToAction, TypeTextAction AdapterDataLoaderAction 强制AdapterView确保与提供的数据匹配器匹配的数据加载到当前视图层次结构中。 AtomAction<E> 一个ViewAction，它可以在webview中对提供的Atom进行评估。 CloseKeyboardAction 关闭软键盘。 EditorAction 执行视图上的任何编辑器（IME）操作。 EnableJavascriptAction 在WebView上强制启用Javascript。 GeneralClickAction 启用点击视图。 GeneralSwipeAction 启用在视图中滑动。 KeyEventAction 在视图上启用按下的KeyEvents。 OpenLinkAction 调用TextView中的链接（使用Linkify或通过其他方法创建）中的链接。 RecyclerViewActions.PositionableRecyclerViewAction 大多数RecyclerViewAction都有一个匹配器，用于在RecyclerView中选择一个特定的视图/视图。 ReplaceTextAction 通过将 EditText的文本属性设置为给定的字符串来替换查看文本。 ScrollToAction 启用滚动到给定的视图。 TypeTextAction 启用在视图上键入文字。

负责在给定View元素上执行交互。

这是测试框架public API的一部分 - 开发人员可以在必要时自由编写自己的ViewAction实现。 在实施新的ViewAction时，请遵循以下规则：

• Inject motion events or key events via the UiController to simulate user interactions.
• Do not mutate the view directly via setter methods and other state changing methods on the view parameter.
• Do not throw AssertionErrors. Assertions belong in ViewAssertion classes.
• View action code will executed on the UI thread, therefore you should not block, perform sleeps, or perform other expensive computations.
• The test framework will wait for the UI thread to be idle both before and after perform() is called. This means that the action is guaranteed to be synchronized with any other view operations.
• Downcasting the View object to an expected subtype is allowed, so long as the object expresses the subtype matches the constraints as specified in getConstraints.

Summary

Public methods

Matcher<View> getConstraints ()

String getDescription ()

void perform (UiController uiController, 
                View view)