启动画面错误：android.content.res.Resources$NotFoundException: Drawable

Question

我正在尝试通过以下操作在我的 android 应用程序中实现启动画面 this article。我一步一步地遵循它，但是每当我尝试运行该应用程序时，它会立即崩溃，并且我的 logcat 中出现以下错误：

2019-01-05 10:46:33.682 2265-2265/com.example.khoi.parkingapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.khoi.parkingapp, PID: 2265
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.khoi.parkingapp/com.example.khoi.parkingapp.SplashActivity}: android.content.res.Resources$NotFoundException: Drawable com.example.khoi.parkingapp:drawable/splash_background with resource ID #0x7f07008d
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2955)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
     Caused by: android.content.res.Resources$NotFoundException: Drawable com.example.khoi.parkingapp:drawable/splash_background with resource ID #0x7f07008d
     Caused by: android.content.res.Resources$NotFoundException: File res/drawable/splash_background.xml from drawable resource ID #0x7f07008d
        at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:837)
        at android.content.res.ResourcesImpl.loadDrawable(ResourcesImpl.java:659)
        at android.content.res.Resources.getDrawableForDensity(Resources.java:891)
        at android.content.res.Resources.getDrawable(Resources.java:833)
        at android.content.Context.getDrawable(Context.java:605)
        at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:463)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:203)
        at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:86)
        at android.support.v7.app.AppCompatDelegateImpl.<init>(AppCompatDelegateImpl.java:260)
        at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:182)
        at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:520)
        at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)
        at com.example.khoi.parkingapp.SplashActivity.onCreate(SplashActivity.kt:10)
        at android.app.Activity.performCreate(Activity.java:7183)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1220)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2908)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3030)
        at android.app.ActivityThread.-wrap11(Unknown Source:0)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1696)
        at android.os.Handler.dispatchMessage(Handler.java:105)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6938)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
     Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #8: <bitmap> requires a valid 'src' attribute
        at android.graphics.drawable.BitmapDrawable.updateStateFromTypedArray(BitmapDrawable.java:823)
        at android.graphics.drawable.BitmapDrawable.inflate(BitmapDrawable.java:754)
        at android.graphics.drawable.DrawableInflater.inflateFromXmlForDensity(DrawableInflater.java:146)
        at android.graphics.drawable.Drawable.createFromXmlInnerForDensity(Drawable.java:1322)
        at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:1311)
        at android.graphics.drawable.LayerDrawable.inflateLayers(LayerDrawable.java:284)
        at android.graphics.drawable.LayerDrawable.inflate(LayerDrawable.java:194)
        at android.graphics.drawable.DrawableInflater.inflateFromXmlForDensity(DrawableInflater.java:146)
        at android.graphics.drawable.Drawable.createFromXmlInnerForDensity(Drawable.java:1322)
2019-01-05 10:46:33.682 2265-2265/com.example.khoi.parkingapp E/AndroidRuntime:     at android.graphics.drawable.Drawable.createFromXmlForDensity(Drawable.java:1281)
        at android.content.res.ResourcesImpl.loadDrawableForCookie(ResourcesImpl.java:824)
            ... 24 more

这是我的 splash_background.xml

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

    <item
            android:drawable="@color/colorPrimary"/>

    <item>
        <bitmap
                android:gravity="center"
                android:src="@mipmap/ic_launcher"/>
    </item>

</layer-list>

任何帮助将不胜感激

Answer 1

现在很多人都在使用带有多个图像的 mipmap - 如果您想使用矢量资产，那么将您的项目标签（在 'background_splash.xml' 中具有位图或其他名称的那个）替换为：

<item
    android:height="48dp"
    android:width="48dp"
    android:drawable="@mipmap/ic_launcher"
    android:gravity="center" />

请注意，高度/宽度是我自己的，可以替换。此外，这仅适用于 API 级别 23 及更高级别。如果使用lower，你可以这样做：

<item
    android:top="48dp"
    android:bottom="48dp"
    android:left="48dp"
    android:right="48dp"
    android:drawable="@mipmap/ic_launcher"
    android:gravity="center" />

Answer 2

就我而言，这个解决方案并没有解决问题。为了修复它，我声明了启动屏幕的背景图像，如下所示：

<item android:drawable="@color/colorPrimary" />

<item
    android:drawable="@drawable/ic_launcher"
    android:gravity="center" />

Answer 3

感谢 Alexander 缩小错误范围，我发现这个 post 完全解决了我的问题：

我将我的 splash_background.xml 修复为：

<?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
            android:drawable="@color/colorPrimary"/>

    <item>
        <bitmap
                android:gravity="center"
                android:src="@drawable/ic_launcher"/>
    </item>

</layer-list>

显然，您需要的 src 需要位于 drawable 文件夹中，并且它是 .png 而不是 .xml

Answer 4

如果你在这里看这条线：

原因：org.xmlpull.v1.XmlPullParserException：二进制 XML 文件第 8 行：需要有效的 'src' 属性

问题似乎是您的布局中可绘制对象的来源无效。