问题描述
Espresso 声称不需要 Thread.sleep()
但除非我包含它,否则我的代码不起作用.我正在连接到一个 IP,并且在连接时会显示一个进度对话框.我需要一个 Thread.sleep()
调用来等待对话框关闭.这是我使用它的测试代码:
Espresso claims that there is no need for Thread.sleep()
but my code doesn't work unless I include it. I am connecting to an IP and, while connecting, a progress dialog is shown. I need a Thread.sleep()
call to wait for the dialog to dismiss. This is my test code where I use it:
IP.enterIP(); // fills out an IP dialog (this is done with espresso)
//progress dialog is now shown
Thread.sleep(1500);
onView(withId(R.id.button).perform(click());
我在没有 Thread.sleep()
调用的情况下尝试了这段代码,但它说 R.id.Button
不存在.我让它工作的唯一方法是使用 Thread.sleep()
调用.
I have tried this code without the Thread.sleep()
call but it says R.id.Button
doesn't exist. The only way I can get it to work is with the Thread.sleep()
call.
另外,我尝试用 getInstrumentation().waitForIdleSync()
之类的东西替换 Thread.sleep()
,但仍然没有运气.
Also, I have tried replacing Thread.sleep()
with things like getInstrumentation().waitForIdleSync()
and still no luck.
这是唯一的方法吗?还是我遗漏了什么?
Is this the only way to do this? Or am I missing something?
提前致谢.
推荐答案
我认为正确的做法是:
/** Perform action of waiting for a specific view id. */
public static ViewAction waitId(final int viewId, final long millis) {
return new ViewAction() {
@Override
public Matcher<View> getConstraints() {
return isRoot();
}
@Override
public String getDescription() {
return "wait for a specific view with id <" + viewId + "> during " + millis + " millis.";
}
@Override
public void perform(final UiController uiController, final View view) {
uiController.loopMainThreadUntilIdle();
final long startTime = System.currentTimeMillis();
final long endTime = startTime + millis;
final Matcher<View> viewMatcher = withId(viewId);
do {
for (View child : TreeIterables.breadthFirstViewTraversal(view)) {
// found view with required ID
if (viewMatcher.matches(child)) {
return;
}
}
uiController.loopMainThreadForAtLeast(50);
}
while (System.currentTimeMillis() < endTime);
// timeout happens
throw new PerformException.Builder()
.withActionDescription(this.getDescription())
.withViewDescription(HumanReadables.describe(view))
.withCause(new TimeoutException())
.build();
}
};
}
然后使用模式将是:
// wait during 15 seconds for a view
onView(isRoot()).perform(waitId(R.id.dialogEditor, TimeUnit.SECONDS.toMillis(15)));
这篇关于浓缩咖啡:Thread.sleep()的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!