我需要向下滚动我的NestedScrollView以便用Espresso测试我的xml文件,但我得到错误消息:“错误执行'scroll to'on view',ID:”
现在我得到了前面提到的错误,并发现了这个帖子:试图滚动到视图,但视图没有显示
我的NestedScrollView中没有填充-为了测试目的,我甚至尝试从XML中完全删除填充,但没有什么不同。
这是我的测试(到目前为止,它不应该做任何事情,而是向下滚动):
@Test
public void testScrollDownAbilityOfDetailsScrollView(){
goToSpecificItemOnStream(streamItemWithOneImage);
onView(withId(R.id.end_of_details))
.perform(ScrollToAction.betterScrollTo());
}
public final class ScrollToAction implements ViewAction {
private static final String TAG = ScrollToAction.class.getSimpleName();
@SuppressWarnings("unchecked")
@Override
public Matcher<View> getConstraints() {
return allOf(withEffectiveVisibility(Visibility.VISIBLE), isDescendantOfA(anyOf(
isAssignableFrom(ScrollView.class), isAssignableFrom(HorizontalScrollView.class), isAssignableFrom(NestedScrollView.class))));
}
@Override
public void perform(UiController uiController, View view) {
if (isDisplayingAtLeast(80).matches(view)) {
Log.i(TAG, "View is already displayed. Returning.");
return;
}
Rect rect = new Rect();
view.getDrawingRect(rect);
if (!view.requestRectangleOnScreen(rect, true /* immediate */)) {
Log.w(TAG, "Scrolling to view was requested, but none of the parents scrolled.");
}
uiController.loopMainThreadUntilIdle();
if (!isDisplayingAtLeast(80).matches(view)) {
throw new PerformException.Builder()
.withActionDescription(this.getDescription())
.withViewDescription(HumanReadables.describe(view))
.withCause(new RuntimeException(
"Scrolling to view was attempted, but the view is not displayed"))
.build();
}
}
public static ViewAction betterScrollTo() {
return ViewActions.actionWithAssertions(new ScrollToAction());
}
@Override
public String getDescription() {
return "scroll to";
}}
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/scrollView"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<FrameLayout
android:id="@+id/fl"
android:background="#FBFBFB"
android:layout_margin="0dp"
android:layout_width="match_parent"
android:layout_height="350dp">
<android.support.v4.view.ViewPager
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
<ImageView
android:id="@+id/location"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/text_margin"
android:layout_gravity="left|top"
android:background="@null"
android:src="@drawable/ic_location_white"
android:paddingLeft="-8dp" />
<TextView
android:id="@+id/textViewDistance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/location"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_margin="@dimen/text_margin"
android:layout_gravity="left|top"
android:shadowColor="#262424"
android:shadowDx="1"
android:shadowDy="1"
android:shadowRadius="2"
android:textColor="#FBFBFB"
android:textSize="22dp"
android:singleLine="false"
android:paddingLeft="24dp" />
<TextView
android:id="@+id/textViewPrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_margin="@dimen/text_margin"
android:layout_gravity="right|top"
android:shadowColor="#262424"
android:shadowDx="1"
android:shadowDy="1"
android:shadowRadius="2"
android:textColor="#FBFBFB"
android:textSize="22dp"/>
<me.relex.circleindicator.CircleIndicator
android:id="@+id/indicator"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:shadowColor="#262424"
android:shadowDx="1"
android:shadowDy="1"
android:shadowRadius="1"/>
</FrameLayout>
<LinearLayout
android:layout_below="@id/fl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<TextView
android:id="@+id/textViewTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:layout_margin="@dimen/text_margin"
android:textColor="@color/colorCheckTomBlack"
android:textStyle="bold"
android:textSize="20dp" />
<TextView
android:id="@+id/textViewDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/text_margin"
android:layout_marginRight="@dimen/text_margin"
android:gravity="left"
android:textColor="@color/colorCheckTomBlack"
android:textSize="18dp"
android:layout_weight="0.56" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="65dp"
android:paddingTop="30dp">
<ImageButton
android:id="@+id/buttonWatchlist"
android:src="@drawable/ic_checktom"
android:background="@null"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left"
android:layout_marginLeft="55dp"
android:layout_marginStart="55dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:onClick="launchWatchlistActivity"
android:paddingTop="2dp"/>
<ImageButton
android:id="@+id/buttonMessage"
android:src="@drawable/ic_messages"
android:background="@null"
android:scaleX="1.2"
android:scaleY="1.2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:onClick="launchMessageActivity"
android:paddingTop="7dp"/>
<ImageButton
android:id="@+id/buttonShare"
android:src="@drawable/ic_share"
android:background="@null"
android:scaleX="1.5"
android:scaleY="1.5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="54dp"
android:layout_marginEnd="54dp"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:onClick="launchShareActivity"/>
</RelativeLayout>
<RelativeLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="2dp">
<TextView
android:id="@+id/textViewWatchlist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Watchhtml" target="_blank">list"
android:layout_marginLeft="41dp"
android:layout_marginStart="41dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:id="@+id/textViewMessage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Message"
android:layout_gravity="center_horizontal"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/textViewShare"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Share"
android:layout_gravity="center_horizontal"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="52dp"
android:layout_marginEnd="52dp" />
</RelativeLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="_________________________________________"
android:paddingTop="25dp"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/imageView"
android:layout_centerHorizontal="true"
android:id="@+id/circleView"
android:scaleX="0.4"
android:scaleY="0.4"
android:layout_marginTop="-20dp"
android:layout_marginBottom="-60dp"
/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center">
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<TextView
android:id="@+id/textViewSellerName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18dp"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center">
<TextView
android:id="@+id/textViewSellerDestination"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingBottom="20dp" />
<TextView
android:id="@+id/end_of_details"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
Android.support.test.espresso.PerformException:执行“滚动到'on view'时ID:com.checktom.checktom:id/end_of_details”时出错。在Android.support.test.espresso.performException$builder.build(PerformException.java:83)在Android.support.test.espresso.base.defaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:80)在Android.support.test.espresso.base.defaultFailureHandler.handle(DefaultFailureHandler.java:56)在在Android.support.test.espresso.viewInteraction.perform(ViewInteraction.java:87)在com.checktom.checktom.applicationtest.testScrolldownabilityofdetailsScrollView(applicationTest.java:279)在java.lang.reflect.Method.invoke(原生方法)在java.lang.reflect.Method.invoke(Method.java:372)在V在org.junit.internal.runners.statements.invokeMethod.evaluate(invokeMethod.java:17)在org.junit.internal.runners.statements.runbefores.evaluate(runbefores.java:26)在android.support.test.statement.uithreadStatement.evaluate(uithreadStatement.java:55)在android.support.test.rule.activityStatement.evaluate(parentRunner.java:325)在org.junit.runners.blockJunit4ClassRunner.runchild(blockJunit4ClassRunner.java:78)在org.junit.runners.blockJunit4ClassRunner.runchild(blockJunit4ClassRunner.java:57)在org.junit.runners.parentRunner$3.run(parentRunner.java:57)在org.junit.runners.parentRunner$3.run(.Evalu在org.junit.runners.parentrunner.run(parentrunner.java:363)在org.junit.runners.suite.runchild(suite.java:128)在org.junit.runners.suite.runchild(suite.java:27)在org.junit.runners.parentrunner$3.run(parentrunner.java:290)在org.junit.runners.parentrunner$1在org.junit.runners.parentrunner.junit.runners.parentrunner$2.在org.junit.runners.parentrunner.run(parentrunner.java:268)在org.junit.runner.junitcore.run(junitcore.java:363),在org.junit.runner.junitcore.run(junitcore.java:137),在org.junit.runner.junitcore.run(junitcore.java:115),在Instrumentation.java:1933)由:java.lang.RuntimeException引起:滚动到尝试查看,但该视图未显示在com.checktom.checktom.scrolltoaction.perform(Scrolltoaction.java:52),android.support.test.espresso.viewinteraction$1.run oper.java:145),android.app.activitythread.main(activitythread.java:6938),java.lang.reflect.Method.invoke(原生方法),java.lang.reflect.Method.invoke(Method.java:372),com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1199),测试运行到完成。
我可以看出,我在ScrollToAction类的perform方法中遇到了运行时异常,但我还没有找到解决它的方法。
在我链接的第一篇文章中,新的BetterScrollTo方法似乎非常有效。
我是这么做的:
onView(withId(R.id.viewToScroll)
.perform(nestedScrollTo())
.check(matches(isDisplayed()));
其中nestedscrollto()
为:
public static ViewAction nestedScrollTo() {
return new ViewAction() {
@Override
public Matcher<View> getConstraints() {
return Matchers.allOf(
isDescendantOfA(isAssignableFrom(NestedScrollView.class)),
withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE));
}
@Override
public String getDescription() {
return "View is not NestedScrollView";
}
@Override
public void perform(UiController uiController, View view) {
try {
NestedScrollView nestedScrollView = (NestedScrollView)
findFirstParentLayoutOfClass(view, NestedScrollView.class);
if (nestedScrollView != null) {
nestedScrollView.scrollTo(0, view.getTop());
} else {
throw new Exception("Unable to find NestedScrollView parent.");
}
} catch (Exception e) {
throw new PerformException.Builder()
.withActionDescription(this.getDescription())
.withViewDescription(HumanReadables.describe(view))
.withCause(e)
.build();
}
uiController.loopMainThreadUntilIdle();
}
};
}
private static View findFirstParentLayoutOfClass(View view, Class<? extends View> parentClass) {
ViewParent parent = new FrameLayout(view.getContext());
ViewParent incrementView = null;
int i = 0;
while (parent != null && !(parent.getClass() == parentClass)) {
if (i == 0) {
parent = findParent(view);
} else {
parent = findParent(incrementView);
}
incrementView = parent;
i++;
}
return (View) parent;
}
private static ViewParent findParent(View view) {
return view.getParent();
}
private static ViewParent findParent(ViewParent view) {
return view.getParent();
}
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