问题出现在以下情况下:
我从Android Studio运行应用程序,应用程序正常运行
然后我删除了该应用程序,并尝试安装来自
.../app/build/outputs/apk/debug.apk
的debug.apk文件
我的操作系统是Ubuntu 16.04, oracle jdk
但在Windows 7上一切正常(可以从.../app/build/outputs/apk/debug.apk
安装apk并正常运行)
出现以下错误:
FATAL EXCEPTION: main
Process: com.example, PID: 21084
java.lang.RuntimeException: Unable to instantiate application com.example.MyApp: java.lang.ClassNotFoundException: Didn't find class "com.example.MyApp" on path: DexPathList[[zip file "/data/app/com.example-1/base.apk"],nativeLibraryDirectories=[/data/app/com.example-1/lib/arm, /vendor/lib, /system/lib]]
at android.app.LoadedApk.makeApplication(LoadedApk.java:676)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6289)
at android.app.ActivityThread.access$1800(ActivityThread.java:221)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1860)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.MyApp" on path: DexPathList[[zip file "/data/app/com.example-1/base.apk"],nativeLibraryDirectories=[/data/app/com.example-1/lib/arm, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.Instrumentation.newApplication(Instrumentation.java:1004)
at android.app.LoadedApk.makeApplication(LoadedApk.java:666)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6289)
at android.app.ActivityThread.access$1800(ActivityThread.java:221)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1860)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Suppressed: java.lang.ClassNotFoundException: com.example.MyApp
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 12 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
我的Gradle:
apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'
apply plugin: 'io.fabric'
apply plugin: 'android-apt'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example"
minSdkVersion 19
targetSdkVersion 25
versionCode 1
versionName "1.0"
multiDexEnabled true
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
jackOptions {
enabled false
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
dexOptions {
javaMaxHeapSize "8g"
jumboMode = true
preDexLibraries = false
}
signingConfigs {
//release
release {
storeFile file("/keys/apk_key.jks")
storePassword "apk_key"
keyAlias "apk_key"
keyPassword "apk_key"
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.release
debuggable false
}
debug {
signingConfig signingConfigs.release
debuggable true
}
}
dexOptions {
javaMaxHeapSize "3G"
}
packagingOptions {
exclude 'LICENSE.txt'
exclude 'mockito-extensions/org.mockito.plugins.MockMaker'
exclude 'META-INF/DEPENDENCIES.txt'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/notice.txt'
exclude 'META-INF/license.txt'
exclude 'META-INF/dependencies.txt'
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
...
}
我也尝试了以下操作:
使缓存失效/重启
清理项目
重新构建项目