在其他应用程序上绘制时 Ripple 崩溃

Question

我想显示一个包含波纹的视图。启动覆盖时，应用程序崩溃。去除纹波时一切正常。我添加了以下权限：

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

这是我使用的布局。

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>

        <variable
            name="data"
            type="MyModel" />
    </data>

    <com.google.android.material.card.MaterialCardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="4dp"
        android:layout_marginTop="4dp"
        android:clickable="true"
        android:focusable="true">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="?attr/selectableItemBackground"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:padding="8dp">

            <de.hdodenhof.circleimageview.CircleImageView
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_marginEnd="8dp"
                android:layout_marginRight="8dp"
                app:setImageBitmap="@{data.appIcon}" />

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@{data.name}"
                    android:textSize="16sp" />

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="@{data.packageName}"
                    android:textSize="12sp" />
            </LinearLayout>
        </LinearLayout>
    </com.google.android.material.card.MaterialCardView>
</layout>

这是我得到的错误：

2018-11-05 17:15:36.073 10299-10299/be.vanlooverenkoen.riddle.app E/AndroidRuntime: FATAL EXCEPTION: main
    Process: be.vanlooverenkoen.riddle.app, PID: 10299
    android.view.InflateException: Binary XML file line #12: Binary XML file line #12: Error inflating class <unknown>
    Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class <unknown>
    Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:647)
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:720)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at androidx.databinding.DataBindingUtil.inflate(DataBindingUtil.java:126)
        at androidx.databinding.DataBindingUtil.inflate(DataBindingUtil.java:95)
        at be.vanlooverenkoen.riddle.app.adapter.overlay.OverlayAppAdapter.onCreateViewHolder(OverlayAppAdapter.kt:47)
        at be.vanlooverenkoen.riddle.app.adapter.overlay.OverlayAppAdapter.onCreateViewHolder(OverlayAppAdapter.kt:14)
        at androidx.recyclerview.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6744)
        at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5925)
        at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5808)
        at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5804)
        at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230)
        at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557)
        at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517)
        at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3878)
        at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3595)
        at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4148)
        at android.view.View.layout(View.java:20672)
        at android.view.ViewGroup.layout(ViewGroup.java:6194)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:20672)
        at android.view.ViewGroup.layout(ViewGroup.java:6194)
        at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1812)
        at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1656)
        at android.widget.LinearLayout.onLayout(LinearLayout.java:1565)
        at android.view.View.layout(View.java:20672)
        at android.view.ViewGroup.layout(ViewGroup.java:6194)
        at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
        at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
        at android.view.View.layout(View.java:20672)
        at android.view.ViewGroup.layout(ViewGroup.java:6194)
        at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2792)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2319)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7183)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949)
        at android.view.Choreographer.doCallbacks(Choreographer.java:761)
        at android.view.Choreographer.doFrame(Choreographer.java:696)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:193)
2018-11-05 17:15:36.077 10299-10299/be.vanlooverenkoen.riddle.app E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 13: TypedValue{t=0x2/d=0x7f0301b3 a=-1}
        at android.content.res.TypedArray.getDrawableForDensity(TypedArray.java:946)
        at android.content.res.TypedArray.getDrawable(TypedArray.java:930)
        at android.view.View.<init>(View.java:5010)
        at android.view.ViewGroup.<init>(ViewGroup.java:659)
        at android.widget.LinearLayout.<init>(LinearLayout.java:244)
        at android.widget.LinearLayout.<init>(LinearLayout.java:240)
        at android.widget.LinearLayout.<init>(LinearLayout.java:236)
            ... 54 more

删除 android:background 一切正常。

同样在使用 Switch 时我也遇到了同样的问题。我认为这与涟漪有关。

Answer 1

您似乎是在 API 级别小于 21 的设备上启动您的应用程序。您需要为 api 小于 21 的选择器创建普通可绘制对象，为 api 21个以上。

Answer 2

我使用的是 ?attr/selectableItemBackground，但没有为叠加层设置主题。使用 ?android:attr/selectableItemBackground 时一切正常。创建您自己的 ripple drawable 也可以。

在其他应用程序上绘制时 Ripple 崩溃

Ripple crashes when drawing over other apps

android

overlay

rippledrawable