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:)后的ClassNotFoundException（AppCompatActivity.class）从Windows迁移的Android Studio项目到Mac
我目前在Android应用工作使用Android Studio和我已经在它的工作后，我的Windows机器上相当长的一段，我目前正试图让它在我的MacBook Air上运行。
我复制了项目文件并在Mac上创建了一个模拟器（API 25）。该项目编译得很好，但它会立即在仿真器崩溃因以下错误：
FATAL EXCEPTION: main
Process: com.lennartschoch.partytime, PID: 5736
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.lennartschoch.partytime/com.lennartschoch.partytime.LoadingActivity}: java.lang.ClassNotFoundException: Didn't find class "com.lennartschoch.partytime.LoadingActivity" on path: DexPathList[[zip file "/data/app/com.lennartschoch.partytime-2/base.apk", zip file "/data/app/com.lennartschoch.partytime-2/split_lib_slice_3_apk.apk"],nativeLibraryDirectories=[/data/app/com.lennartschoch.partytime-2/lib/x86, /system/lib, /vendor/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2567)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.lennartschoch.partytime.LoadingActivity" on path: DexPathList[[zip file "/data/app/com.lennartschoch.partytime-2/base.apk", zip file "/data/app/com.lennartschoch.partytime-2/split_lib_slice_3_apk.apk"],nativeLibraryDirectories=[/data/app/com.lennartschoch.partytime-2/lib/x86, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.Instrumentation.newActivity(Instrumentation.java:1078)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2557)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Suppressed: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/app/AppCompatActivity;
at java.lang.VMClassLoader.findLoadedClass(Native Method)
at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:742)
at java.lang.ClassLoader.loadClass(ClassLoader.java:362)
... 12 more
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.v7.app.AppCompatActivity" on path: DexPathList[[zip file "/data/app/com.lennartschoch.partytime-2/base.apk", zip file "/data/app/com.lennartschoch.partytime-2/split_lib_slice_3_apk.apk"],nativeLibraryDirectories=[/data/app/com.lennartschoch.partytime-2/lib/x86, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 15 more
我已（希望）currectly实现了Android支持库（第7版），你可以在我的build.gradle看到：
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.3"
defaultConfig {
applicationId "com.lennartschoch.partytime"
minSdkVersion 19
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:design:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:support-v4:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:25.3.1'
}
我已经尝试清洁和重建项目，但我不能摆脱这个问题。有什么建议么？
谢谢！
http://stackoverflow.com/questions/22399572/java-lang-classnotfoundexception-didnt-find-class-on-path-dexpathlist – Pavya
你不需要v7。设计库已包含它 –