dalvik.system.BaseDexClassLoader.findClass 中的 java.lang.ClassNotFoundException

Question

这个错误快把我逼疯了。从 Google Play 商店下载时，我的应用程序在启动时崩溃并出现错误:

java.lang.ClassNotFoundException
in dalvik.system.BaseDexClassLoader.findClass

在我们的两台设备上从 eclipse 构建时，我的应用程序没有崩溃。然而一个月前，一位客户使用他的手机构建了我们的应用程序，然后它在启动时也崩溃了。当时我忽略了这个问题，因为它正在我们的设备上运行，并认为它与 Google map key 或 keystore 有关。

现在我们的应用程序从 Play 商店下载后在每台设备上都会崩溃。我知道没有一种简单的方法可以解决这个问题，但如果能朝正确的方向推进，我们将不胜感激。

我还发现很难调试这个问题，因为在我们的设备上从 eclipse 构建该应用程序时效果很好!

这是我报告的完整错误日志:

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.denederlandsewateren.winkeloord/com.denederlandsewateren.views.StartScreenActivity}: java.lang.ClassNotFoundException: com.denederlandsewateren.views.StartScreenActivity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2099)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2210)
at android.app.ActivityThread.access$600(ActivityThread.java:142)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1208)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4931)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: com.denederlandsewateren.views.StartScreenActivity
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2090)
... 11 more

同样，除了对这个问题的直接回答外，我不会再说了，但也许有人可以通过这个错误日志来阐明这个问题。

编辑

如果有帮助的话，这里是 Manifest 文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.xxxx.xxxxx"
    android:versionCode="1"
    android:versionName="1.0" >

    <permission
        android:name="com.xxxxx.xxxxx.MAPS_RECEIVE"
        android:protectionLevel="signature" />
    <permission
        android:name="com.xxxxx.xxxxx.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />

    <uses-permission android:name="my_app_package.permission.C2D_MESSAGE" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="com.xxxxxx.xxxxx.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.VIBRATE" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/app_icon"
        android:label="@string/app_name"
        android:theme="@style/Theme.Sherlock" >
        <service android:name="com.xxxxxx.xxxxx.GCMIntentService" />

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="xxxxxxxx" />

        <receiver
            android:name="com.google.android.gcm.GCMBroadcastReceiver"
            android:permission="com.google.android.c2dm.permission.SEND" >
            <intent-filter>
                <action android:name="com.google.android.c2dm.intent.RECEIVE" />
                <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

                <category android:name="com.xxxxxx.xxxxxxx" />
            </intent-filter>
        </receiver>

        <activity
            android:name="com.xxxxx.xxxxx.MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait">
            <!--<intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter> -->
        </activity>

        <meta-data
            android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/app_id" />

        <activity android:name="com.facebook.LoginActivity" >
        </activity>
        <activity
            android:name="com.xxxxxx.xxxxxx.StartScreenActivity"
            android:label="@string/app_name" 
            android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

编辑

添加了在设备上安装应用程序时的详细日志

03-30 17:56:28.554: D/dalvikvm(5150): GC_FOR_ALLOC freed 233K, 68% free 2639K/8195K, paused 13ms, total 13ms
03-30 17:56:28.574: I/dalvikvm-heap(5150): Grow heap (frag case) to 26.682MB for 16777232-byte allocation
03-30 17:56:28.594: D/dalvikvm(5150): GC_CONCURRENT freed <1K, 23% free 19022K/24647K, paused 2ms+9ms, total 21ms
03-30 17:56:29.114: D/dalvikvm(5150): GC_FOR_ALLOC freed 0K, 23% free 19022K/24647K, paused 15ms, total 15ms
03-30 17:56:29.129: I/dalvikvm-heap(5150): Grow heap (frag case) to 35.681MB for 9437200-byte allocation
03-30 17:56:29.169: D/dalvikvm(5150): GC_CONCURRENT freed 0K, 17% free 28238K/33927K, paused 2ms+2ms, total 38ms
03-30 17:56:29.254: D/libEGL(5150): loaded /system/lib/egl/libEGL_mali.so
03-30 17:56:29.259: D/libEGL(5150): loaded /system/lib/egl/libGLESv1_CM_mali.so
03-30 17:56:29.259: D/libEGL(5150): loaded /system/lib/egl/libGLESv2_mali.so
03-30 17:56:29.284: D/OpenGLRenderer(5150): Enabling debug mode 0
03-30 17:56:32.154: D/KEY(5150): UUID
03-30 17:56:32.179: I/System.out(5150): UUID: xxxxxxxxxxxxxx
03-30 17:56:32.179: E/SerializeObject(5150): FileNot Found in ReadSettings filename = xxxxx.dat
03-30 17:56:32.184: D/GCMRegistrar(5150): resetting backoff for com.xxxxx.xxxxx
03-30 17:56:32.214: V/GCMRegistrar(5150): Registering app com.xxxxx.xxxxx of senders 752727514714
03-30 17:56:32.214: D/KEY(5150): pushEnabled
03-30 17:56:32.324: V/SlidingMenu(5150): setting padding!
03-30 17:56:32.394: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.394: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.394: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.409: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.414: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.414: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.424: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.424: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.429: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.434: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.434: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.434: W/AllCapsTransformationMethod(5150): Caller did not enable length changes; not transforming text
03-30 17:56:32.459: V/CustomViewBehind(5150): behind INVISIBLE
03-30 17:56:36.894: D/dalvikvm(5150): GC_CONCURRENT freed 20031K, 58% free 15574K/36551K, paused 4ms+7ms, total 49ms
03-30 17:56:36.894: D/dalvikvm(5150): WAIT_FOR_CONCURRENT_GC blocked 31ms
03-30 17:56:37.504: I/System.out(5150): VaarApp ID: 5
03-30 17:56:37.534: I/Choreographer(5150): Skipped 122 frames!  The application may be doing too much work on its main thread.
03-30 17:56:37.539: V/GCMBroadcastReceiver(5150): onReceive: com.google.android.c2dm.intent.REGISTRATION
03-30 17:56:37.544: V/GCMBroadcastReceiver(5150): GCM IntentService class: com.xxxxx.xxxxx.GCMIntentService
03-30 17:56:37.549: V/GCMBaseIntentService(5150): Acquiring wakelock
03-30 17:56:37.794: V/GCMBaseIntentService(5150): Intent service name: GCMIntentService-DynamicSenderIds-1
03-30 17:56:37.794: E/GCMRegistrar(5150): internal error: retry receiver class not set yet
03-30 17:56:37.794: V/GCMRegistrar(5150): Registering receiver
03-30 17:56:37.799: D/GCMBaseIntentService(5150): handleRegistration: registrationId = xxxxxxxxx-xxxxxxxx-xxxxxxxx-xxxxxx-xxxxx-xxxx, error = null, unregistered = null
03-30 17:56:37.799: D/GCMRegistrar(5150): resetting backoff for com.xxxxx.xxxxx
03-30 17:56:37.799: V/GCMRegistrar(5150): Saving regId on app version 1
03-30 17:56:37.829: V/GCMBaseIntentService(5150): Releasing wakelock
03-30 17:56:39.169: D/dalvikvm(5150): GC_CONCURRENT freed 2248K, 52% free 17830K/36551K, paused 6ms+12ms, total 95ms
03-30 17:56:39.169: D/dalvikvm(5150): WAIT_FOR_CONCURRENT_GC blocked 12ms
03-30 17:56:39.174: D/dalvikvm(5150): WAIT_FOR_CONCURRENT_GC blocked 48ms
03-30 17:56:41.164: I/dalvikvm(5150): Jit: resizing JitTable from 4096 to 8192
03-30 17:56:42.229: D/dalvikvm(5150): GC_CONCURRENT freed 4265K, 49% free 18778K/36551K, paused 3ms+6ms, total 58ms
03-30 17:56:42.229: D/dalvikvm(5150): WAIT_FOR_CONCURRENT_GC blocked 41ms
03-30 17:56:42.234: D/dalvikvm(5150): WAIT_FOR_CONCURRENT_GC blocked 46ms
03-30 17:57:51.759: D/dalvikvm(5150): GC_CONCURRENT freed 5476K, 49% free 18775K/36551K, paused 21ms+6ms, total 196ms

Answer 1

所以确实是 ProGuard 从我的项目中剥离了代码。我使用 ActionBarSherlock 和 facebook，这是我添加的，所以它可以工作:

# ActionBarSherlock 

-keep class android.support.** { *; } 

-keep interface android.support.** { *; } 

-keep class com.actionbarsherlock.** { *; } 

-keep interface com.actionbarsherlock.** { *; } 




# Keep line numbers to alleviate debugging stack traces 

-renamesourcefileattribute SourceFile 

-keepattributes SourceFile,LineNumberTable

这适用于 Facebook:

-keepclassmembers class * implements java.io.Serializable
{
    private static final java.io.ObjectStreamField[] serialPersistentFields;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}