Android 自定义按钮状态选择器 XML 文件导致 Resource$NotFoundException答案

【问题标题】：Android Custom Button State Selector XML file causing Resource$NotFoundExceptionAndroid 自定义按钮状态选择器 XML 文件导致 Resource$NotFoundException
【发布时间】：2011-07-12 18:38:47
【问题描述】：

我的活动由于 Resource$NotFoundException 而随机崩溃，这始终是由于我的自定义按钮的状态选择器文件之一。而且崩溃是完全随机的，我会通过整个应用多次没有崩溃，然后第n次进入一个Activity，然后它会抛出异常。

堆栈跟踪：

07-12 11:12:18.469  2086  2086 D AndroidRuntime: Shutting down VM
07-12 11:12:18.469  2086  2086 W dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x400208b0)
07-12 11:12:18.508  2086  2086 E AndroidRuntime: FATAL EXCEPTION: main
07-12 11:12:18.508  2086  2086 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.appname.droid/com.appname.droid.send.ConfirmActivity}: android.view.InflateException: Binary XML file line #123: Error inflating class <unknown>
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2737)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2753)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread.access$2500(ActivityThread.java:129)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2107)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.os.Handler.dispatchMessage(Handler.java:99)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.os.Looper.loop(Looper.java:143)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread.main(ActivityThread.java:4701)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at java.lang.reflect.Method.invokeNative(Native Method)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at java.lang.reflect.Method.invoke(Method.java:521)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at dalvik.system.NativeStart.main(Native Method)
07-12 11:12:18.508  2086  2086 E AndroidRuntime: Caused by: android.view.InflateException: Binary XML file line #123: Error inflating class <unknown>
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.createView(LayoutInflater.java:513)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.rInflate(LayoutInflater.java:621)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:203)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.Activity.setContentView(Activity.java:1647)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at com.appname.droid.send.ConfirmActivity.onCreate(ConfirmActivity.java:40)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2701)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        ... 11 more
07-12 11:12:18.508  2086  2086 E AndroidRuntime: Caused by: java.lang.reflect.InvocationTargetException
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.widget.Button.<init>(Button.java:65)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at java.lang.reflect.Constructor.constructNative(Native Method)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.LayoutInflater.createView(LayoutInflater.java:500)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        ... 24 more
07-12 11:12:18.508  2086  2086 E AndroidRuntime: Caused by: android.content.res.Resources$NotFoundException: File res/drawable/btn_green.xml from drawable resource ID #0x7f020020
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.content.res.Resources.loadDrawable(Resources.java:1725)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.view.View.<init>(View.java:1885)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.widget.TextView.<init>(TextView.java:369)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.widget.Button.<init>(Button.java:69)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        ... 28 more
07-12 11:12:18.508  2086  2086 E AndroidRuntime: Caused by: java.lang.NullPointerException
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.graphics.drawable.DrawableContainer$DrawableContainerState.addChild(DrawableContainer.java:349)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.graphics.drawable.StateListDrawable$StateListState.addStateSet(StateListDrawable.java:265)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:173)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:796)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.graphics.drawable.Drawable.createFromXml(Drawable.java:737)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        at android.content.res.Resources.loadDrawable(Resources.java:1722)
07-12 11:12:18.508  2086  2086 E AndroidRuntime:        ... 32 more
07-12 11:12:18.515  1235  1235 W ActivityManager:   Force finishing activity com.appname.droid/.send.ConfirmActivity

ConfirmActivity 中的第 40 行是一段代码：

setContentView(R.layout.confirm);

这里是 res/drawable/btn_green.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item 
        android:state_enabled="false"
        android:drawable="@drawable/green_large_btn_pressed" />
    <item 
        android:state_pressed="true" 
        android:state_enabled="true"
        android:drawable="@drawable/green_large_btn_pressed" />
    <item 
        android:state_focused="true" 
        android:state_enabled="true"
        android:drawable="@drawable/green_large_btn" />
    <item 
        android:state_enabled="true"
        android:drawable="@drawable/green_large_btn" />
</selector>

此异常发生在整个应用程序中，它始终是我的按钮之一。我的 btn_gray 和 btn_orange 也会发生同样的事情。

color_large_btn.png 和 color_large_btn_pressed.png 都适用于所有颜色。

安卓版本：目前在运行 Android 2.2 的 Droid2 上也发生在运行 Android 2.1 的摩托罗拉 Blur 在运行 Android 2.3 的 HTC Evo 上似乎不会发生

【问题讨论】：

标签： android layout button resources fatal-error

【解决方案1】：

此问题本质上是内存不足的情况。在将我的 xml 文件膨胀包装在 try-catch 块中之后，我能够通过这个初始错误，即无法加载文件/找到它们。产生的行为是带有图像的活动，直到最终抛出实际的内存不足异常。

修复？发现并删除了许多漏洞并缩小了几个图像文件的大小。

【讨论】：