RepeatActionUntilViewState

Class Overview

Enables performing a given action on a view until it reaches desired state matched by given View matcher. This action is useful in the scenarios where performing the action repeatedly on a view changes its state at runtime. For example, if there is a ViewFlipper on which user can swipe through the views and it automatically flips between each child at a regular interval, it is not always certain which of the child is displayed at a given point of time. In this case, in order to perform click on child no. 4 (assuming child no. 4 contains a text "Child 4"), repeat action can be used as follows:

int maxAttempts=10;
 onView(withId(R.id.my_pager))
            .perform(repeatedlyUntil(swipeUp(), hasDescendant(withText("Child 4")), maxAttempts),
            click());
 

Summary

[Expand] Inherited Methods
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()
From interface androidx.test.espresso.ViewAction abstract Matcher<View> getConstraints() A mechanism for ViewActions to specify what type of views they can operate on. abstract String getDescription() Returns a description of the view action. abstract void perform(UiController uiController, View view) Performs this action on the given view.