ViewPager中的ScrollView在Android 4.x上不滚动 [英] ScrollView inside ViewPager does not scroll on Android 4.x
本文介绍了ViewPager中的ScrollView在Android 4.x上不滚动的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个问题似乎只影响Android 4.x版本，并且可能是特定于设备的(即，在我的华为G630@4.3上不存在，但在三星Ace2@4.4.4上确实存在).
我有一个ScrollView，其中包含一个具有4个CardView的RelativeLayout.现在在某些4.x设备上，当我尝试从卡开始滚动时，根本不会发生滚动事件.如果我触摸卡之间或第一张卡上方(而不是 任意两张卡之间)和设备屏幕之间的小填充物，则可以滚动内容.
I have a problem that seems to only impact Android 4.x versions and may be also device specific (i.e. it does not exist on my Huawei G630@4.3, but do exists on a Samsung Ace2@4.4.4).
I have a ScrollView that contains a RelativeLayout that has 4 CardViews. Now on some 4.x devices, the scroll event simply does not happen when I try to scroll beginning from a card. If I touch the small padding between the cards or above the first card (and not between any two) and the device screen, I can scroll the content.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/tools"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<android.support.v7.widget.CardView
android:id="@+id/metricsContainerCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center_vertical"
android:layout_marginRight="5dp"
android:src="@drawable/metrics"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/metrics"
android:textSize="20sp"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/projectCircleBackgroundShadow"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/warningsContainerCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_below="@id/metricsContainerCard"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center_vertical"
android:layout_marginRight="5dp"
android:src="@drawable/bug_color"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/warnings"
android:textSize="20sp"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/projectCircleBackgroundShadow"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/topWarningsContainerCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/warningsContainerCard"
android:layout_marginTop="10dp"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center_vertical"
android:layout_marginRight="5dp"
android:src="@drawable/top_warnings"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/topWarnings"
android:textSize="20sp"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/projectCircleBackgroundShadow"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/topCriticalItemsContainerCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/topWarningsContainerCard"
android:layout_marginTop="10dp"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center_vertical"
android:layout_marginRight="5dp"
android:src="@drawable/top_critical_items"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/topCriticalItems"
android:textSize="20sp"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/projectCircleBackgroundShadow"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</ScrollView>
在Android 5.x和6.x上没有任何问题.
There isn't any problem on Android 5.x and 6.x.
编辑
问题似乎并不完全与CardView有关，因为我有另一种布局，即使我通过自定义视图拖动屏幕，该问题也不会滚动:
It seems that problem is not exclusively related to CardView, as I have another layout, and it also does not scroll even when I drag the screen by the custom view:
<ScrollView
android:id="@+id/scrollView"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context=".projects.details.ProjectDetailsActivity_">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/projectName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:ellipsize="none"
android:gravity="center_horizontal"
android:text="Project name"
android:textSize="24sp"/>
<c.f.q.a.projects.details.components.widgets.ProjectDetailWidget
android:id="@+id/projectDetailWidget"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"/>
</LinearLayout>
<LinearLayout
android:id="@+id/timelineWrapperLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="@+id/qualityTimelineCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/flipQualityTimelineButton"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginRight="5dp"
android:src="@drawable/flip_to_cost"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:lines="1"
android:text="@string/project_timeline_title"
android:textSize="16dp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/projectQualityTimelineProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
/>
<com.github.mikephil.charting.charts.LineChart
android:id="@+id/projectQualityTimeline"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/costTimelineCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:visibility="gone"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/flipCostTimelineButton"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginRight="5dp"
android:src="@drawable/flip_to_quality"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:lines="1"
android:text="@string/project_cost_timeline_title"
android:textSize="16dp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/projectCostTimelineProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
/>
<com.github.mikephil.charting.charts.LineChart
android:id="@+id/projectCostTimeline"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
<android.support.v7.widget.CardView
android:id="@+id/vcsChangeCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/expandVcsChangeButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginRight="5dp"
android:src="@drawable/expand_chart"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:maxLines="2"
android:text="@string/project_vcschange_title"
android:textSize="16sp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/vcsChangeProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<com.github.mikephil.charting.charts.BarChart
android:id="@+id/projectVcsChange"
android:layout_width="match_parent"
android:layout_height="175dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/dtnosChangeCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/expandDtnosChangeButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginRight="5dp"
android:src="@drawable/expand_chart"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:maxLines="2"
android:text="@string/project_systemchange_title"
android:textSize="16sp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/dtnosChangeProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<com.github.mikephil.charting.charts.BarChart
android:id="@+id/projectDtnosChange"
android:layout_width="match_parent"
android:layout_height="175dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<android.support.v7.widget.CardView
android:id="@+id/sensorNodeCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/expandSensornodeButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginRight="5dp"
android:src="@drawable/expand_chart"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:maxLines="2"
android:text="@string/project_sensornode_title"
android:textSize="16sp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/sensorNodeProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<com.github.mikephil.charting.charts.RadarChart
android:id="@+id/sensorNodeChart"
android:layout_width="match_parent"
android:layout_height="175dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:id="@+id/aggregateNodeCard"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
app:cardElevation="2dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/expandAggregateButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginRight="5dp"
android:src="@drawable/expand_chart"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:ellipsize="end"
android:maxLines="2"
android:text="@string/project_aggregatenode_title"
android:textSize="16sp"/>
</LinearLayout>
<ProgressBar
android:id="@+id/aggregateNodeProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
<com.github.mikephil.charting.charts.RadarChart
android:id="@+id/aggregateNodeChart"
android:layout_width="match_parent"
android:layout_height="175dp"
android:layout_marginTop="16dp"
android:tag="@string/project_chart_tag"
android:visibility="gone"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</LinearLayout>
</ScrollView>
我添加了完整的布局，这也是用于澄清的图像(我标记了可拖动的可滚动区域):
I added the complete layout, and also here is an image for clarification (I marked the scrollable areas which I can drag):
EDIT2
这些布局是ViewPager内部的片段，也许也很重要. ViewPager是否有可能阻止ScrollView(以及其中的任何其他视图)获得焦点/处理触摸事件?我的ViewPager的代码是这样的:
Maybe it is also important that these layouts are Fragments inside a ViewPager. Is it possible that the ViewPager prevents the ScrollView (and any other views inside it) gaining the focus / handling the touch events? The code for my ViewPager is this:
<android.support.v4.view.ViewPager
android:id="@+id/projectPager"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
EDIT3
看来问题一定出在ViewPager + (Nested)ScrollView上(我试图用它来交换普通的ScrollView，但是没有成功).我为我的Fragment创建了一个虚拟布局，该布局仅托管父NestedScrollView，LinearLayout和许多大型TextView，如下所示:
It seems the problem must be with ViewPager + (Nested)ScrollView (I tried to exchange the plain ScrollView with that, but without success). I created a dummy layout for my Fragment that only hosts a parent NestedScrollView, a LinearLayout and many big TextViews like this:
<android.support.v4.widget.NestedScrollView
android:id="@+id/scrollView"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".projects.details.ProjectDetailsActivity_">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="@dimen/activity_horizontal_margin">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="16dp"
android:ellipsize="none"
android:gravity="center_horizontal"
android:text="Project name"
android:textSize="80sp"/>
... <!-- more TextViews come here -->
...并且滚动也不起作用！与以前一样，仅在屏幕的最边缘.我不知道这怎么会发生...
...and scrolling also doesn't work! Only at the very edge of the screen, as previously. I have no idea how can this happen...
推荐答案
已解决！我有完全一样的问题.您可能正在使用PageTransformer ViewPager动画.
Solved! I had exactly the same problem. You are probably using a PageTransformer ViewPager animation.
为<禁用自定义页面转换器. Android 4.1解决了它:
Disabling the custom page transformer for < Android 4.1 solved it:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
// there are problems with this on 4.0.3, probably also on 4.1
viewPager.setPageTransformer(true, new DepthPageTransformer());
}
您的帖子和研究为我节省了很多时间，谢谢.
Your post and research saved me a lot of time, thank you.
其他解决方案:
如果您喜欢动画，也可以尝试将DepthPageTransformer更改为此: https://stackoverflow.com/a/28214802/1310343c
If you like your animation, you can also try changing your DepthPageTransformer to this: https://stackoverflow.com/a/28214802/1310343c
这篇关于ViewPager中的ScrollView在Android 4.x上不滚动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IT屋！
查看全文
