我需要向下滚动浏览我的NestedScrollView以使用Espresso测试我的xml文件,但是我收到错误消息:"错误执行'滚动到'在视图' id:"
其他一些似乎有类似问题的帖子。
我已遵循以下说明:Android espresso NestedScrollView, how to scroll to bottom
现在我收到了上述错误,并发现了这篇文章:Scrolling to view was attempted, but the view is not displayed
我的NestedScrollView中没有填充 - 我甚至尝试从XML中删除填充,用于测试目的,但它没有任何区别。
这是我的测试(到目前为止它不应该做任何事情,但向下滚动):
@Test
public void testScrollDownAbilityOfDetailsScrollView(){
goToSpecificItemOnStream(streamItemWithOneImage);
onView(withId(R.id.end_of_details))
.perform(ScrollToAction.betterScrollTo());
}
它使用自定义的Scroll To Action类:
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";
}}
自定义ScrollToAction类是因为普通的scrollTo方法硬编码到ScrollView和HorizontalScrollView,而不是NestedScrollView。
这是我要测试的XML文件:
<?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="Watchlist"
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>
当测试失败时,这是我得到的完整输出:
android.support.test.espresso.PerformException:执行错误&#39;滚动到&#39;在视图&#39; id:com.checktom.checktom:id / end_of_details&#39;。 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android.support.test.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:184) 在android.support.test.espresso.ViewInteraction.doPerform(ViewInteraction.java:115) 在android.support.test.espresso.ViewInteraction.perform(ViewInteraction.java:87) at com.checktom.checktom.ApplicationTest.testScrollDownAbilityOfDetailsScrollView(ApplicationTest.java:279) at java.lang.reflect.Method.invoke(Native Method) 在java.lang.reflect.Method.invoke(Method.java:372) 在org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall(FrameworkMethod.java:50) 在org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 在org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 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.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55) 在android.support.test.rule.ActivityTestRule $ ActivityStatement.evaluate(ActivityTestRule.java:270) 在org.junit.rules.RunRules.evaluate(RunRules.java:20) 在org.junit.runners.ParentRunner.runLeaf(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:290) 在org.junit.runners.ParentRunner $ 1.schedule(ParentRunner.java:71) 在org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 在org.junit.runners.ParentRunner.access $ 000(ParentRunner.java:58) 在org.junit.runners.ParentRunner $ 2.evaluate(ParentRunner.java:268) 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.schedule(ParentRunner.java:71) 在org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 在org.junit.runners.ParentRunner.access $ 000(ParentRunner.java:58) 在org.junit.runners.ParentRunner $ 2.evaluate(ParentRunner.java:268) 在org.junit.runners.ParentRunner.run(ParentRunner.java:363) 在org.junit.runner.JUnitCore.run(JUnitCore.java:137) 在org.junit.runner.JUnitCore.run(JUnitCore.java:115) 在android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59) 在android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262) 在android.app.Instrumentation $ InstrumentationThread.run(Instrumentation.java:1933) 引起:java.lang.RuntimeException:尝试滚动查看,但不显示视图 在com.checktom.checktom.ScrollToAction.perform(ScrollToAction.java:52) 在android.support.test.espresso.ViewInteraction $ 1.run(ViewInteraction.java:144) at java.util.concurrent.Executors $ RunnableAdapter.call(Executors.java:422) 在java.util.concurrent.FutureTask.run(FutureTask.java:237) 在android.os.Handler.handleCallback(Handler.java:739) 在android.os.Handler.dispatchMessage(Handler.java:95) 在android.os.Looper.loop(Looper.java:145) 在android.app.ActivityThread.main(ActivityThread.java:6938) at java.lang.reflect.Method.invoke(Native Method) 在java.lang.reflect.Method.invoke(Method.java:372) 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1404) 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 测试结束了。
我可以说我在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方法看起来像一个魅力。
答案 0 :(得分:6)
我这样做了:
onView(withId(R.id.viewToScroll)
.perform(nestedScrollTo())
.check(matches(isDisplayed()));
nestedScrollTo()
的位置:
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();
}
答案 1 :(得分:0)
您可以使用新的Espresso Test Recorder获取嵌套滚动的代码 - 看看Espresso Test Recorder
答案 2 :(得分:0)
我使用了此代码(受此SO answer的启发)
class MainMenuActivityTest
{
@Test
fun textInputDialog_opens_on_button_clicked()
{
onView(withId(R.id.text_input_button))
.perform(betterScrollTo())
.perform(click())
}
}
// scroll-to action that also works with NestedScrollViews
class BetterScrollToAction:ViewAction by ScrollToAction()
{
override fun getConstraints():Matcher<View>
{
return allOf(
withEffectiveVisibility(Visibility.VISIBLE),
isDescendantOfA(anyOf(
isAssignableFrom(ScrollView::class.java),
isAssignableFrom(HorizontalScrollView::class.java),
isAssignableFrom(NestedScrollView::class.java))))
}
}
// convenience method
fun betterScrollTo():ViewAction
{
return ViewActions.actionWithAssertions(BetterScrollToAction())
}
现在可以使用
起初,我使用的是this answer here,但是在测试时使用了以下代码:
class MainMenuActivityTest
{
@Test
fun textInputDialog_opens_on_button_clicked()
{
onView(withId(R.id.text_input_button))
.perform(betterScrollTo())
.perform(click())
}
}
但是我有以下例外情况...
E/TestRunner: failed: textInputDialog_opens_on_button_clicked(com.github.ericytsang.example.app.android.MainMenuActivityTest)
----- begin exception -----
E/TestRunner: androidx.test.espresso.PerformException: Error performing 'scroll to' on view 'Animations or transitions are enabled on the target device.
For more info check: https://developer.android.com/training/testing/espresso/setup#set-up-environment
with id: com.github.ericytsang.app.example.android:id/text_input_button'.
............
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2196)
Caused by: java.lang.RuntimeException: Action will not be performed because the target view does not match one or more of the following constraints:
(view has effective visibility=VISIBLE and is descendant of a: (is assignable from class: class android.widget.ScrollView or is assignable from class: class android.widget.HorizontalScrollView or is assignable from class: class android.widget.ListView))
Target view: "AppCompatButton{id=2131296521, res-name=text_input_button, visibility=VISIBLE, width=1008, height=107, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=true, is-enabled=true, is-focused=false, is-focusable=true, is-layout-requested=false, is-selected=false, layout-params=androidx.appcompat.widget.LinearLayoutCompat$LayoutParams@cec11da, tag=null, root-is-layout-requested=false, has-input-connection=false, x=18.0, y=516.0, text=text input dialog, input-type=0, ime-target=false, has-links=false}"
at androidx.test.espresso.ViewInteraction.doPerform(ViewInterac
----- end exception -----
E/TestRunner: failed: textInputDialog_opens_on_button_clicked(com.github.ericytsang.example.app.android.MainMenuActivityTest)
----- begin exception -----
E/TestRunner: androidx.test.espresso.PerformException: Error performing 'scroll to' on view 'with id: com.github.ericytsang.app.example.android:id/text_input_button'.
........
Caused by: java.lang.RuntimeException: Action will not be performed because the target view does not match one or more of the following constraints:
(view has effective visibility=VISIBLE and is descendant of a: (is assignable from class: class android.widget.ScrollView or is assignable from class: class android.widget.HorizontalScrollView or is assignable from class: class android.widget.ListView))
Target view: "AppCompatButton{id=2131296521, res-name=text_input_button, visibility=VISIBLE, width=1008, height=107, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=true, is-enabled=true, is-focused=false, is-focusable=true, is-layout-requested=false, is-selected=false, layout-params=androidx.appcompat.widget.LinearLayoutCompat$LayoutParams@3e84212, tag=null, root-is-layout-requested=false, has-input-connection=false, x=18.0, y=516.0, text=text input dialog, input-type=0, ime-target=false, has-links=false}"
at androidx.test.espresso.ViewInteraction.doPerform(ViewInteraction.java:252)
at androidx.test.espresso.ViewInteraction.access$100(ViewInteraction.java:65)
at androidx.test.espresso.ViewInteraction$1.call(ViewInteraction.jav
----- end exception -----
答案 3 :(得分:0)
@Eric导入的答案是: 非常感谢Eric:)
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