这个错误让我发疯。从Google Play商店下载时，我的应用在启动时崩溃，错误为：
java.lang.ClassNotFoundException
in dalvik.system.BaseDexClassLoader.findClass
在我们的两台设备上使用eclipse构建时，我的应用程序不会崩溃。然而一个月前，一个客户使用他的手机构建我们的应用程序，然后它也在启动时崩溃。我忽略了这个问题，因为它正在我们的设备上工作，并认为它与谷歌地图密钥或密钥库有关。
现在，当从Play商店下载时，我们的应用程序崩溃了。我知道没有一种简单的方法可以解决这个问题，但是我们会欣赏正确的方向。
我也发现很难调试这个问题，因为在我们的设备上使用eclipse构建应用程序时效果很好！
以下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
我再说一遍，除了这个问题的直接答案，但也许有人可以解释这个错误日志提供的这个问题。
修改
如果有帮助，这是清单文件：
<?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>
修改
在设备上安装应用程序时添加了详细日志
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
答案 0 :(得分：7)
所以ProGuard确实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();
}
答案 1 :(得分：0)
好吧，我建议你专注于你从eclipse做的构建与你提供给Play商店的构建之间的区别。
如果您可以重现从Playstore看到的错误，在使用eclipse构建它并进行测试时，您一定会找到答案。
我能想到的是应用程序签名的证书，但似乎并非如此。但是你应该更多地考虑两个.apk之间的区别 - 开发人员构建和playstore的构建。
由于.apk基本上是档案，你可以将它们解压缩，看看它们之间的差异。您应该使用dedexer来尝试反编译classes.dex的两个实例（请参阅decompiling DEX into Java sourcecode）。它可能是高度混淆的代码，但你应该寻找缺少的类或类似的东西。
希望你做对了。
答案 2 :(得分：0)
右键单击项目文件夹=＆gt;属性=＆gt; Java Build Path =＆gt;订单和出口=＆gt;选中方框＆＃34; Android私人图书馆＆＃34;如果没有检查。它有效！