无法实例化应用程序:java.lang.ClassNotFoundException: [英] Unable to instantiate application: java.lang.ClassNotFoundException:
问题描述
问题发生在:
我从 Android Studio 运行应用程序,应用程序运行正常
I run app from Android Studio , the app runs properly
然后我删除了应用程序并尝试从 .../app/build/outputs/apk/debug.apk
then I delete the app and tried to install debug.apk from .../app/build/outputs/apk/debug.apk
我的操作系统是 Ubuntu 16.04,oracle jdk
My OS is Ubuntu 16.04, oracle jdk
但在 Windows 7 上一切正常(apk 可以从 .../app/build/outputs/apk/debug.apk
安装并正常运行)
but on Windows 7 all works properly(apk can be installed from .../app/build/outputs/apk/debug.apk
and runs properly)
出现这个错误:
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
我的毕业证:
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'])
...
}
我也尝试过:
使缓存无效/重启
清理项目
重建项目
推荐答案
谢谢@Dileep Patel我遇到了同样的问题.应用程序仅在从 Android Studio 安装时才有效,如果通过 adb 命令安装则崩溃.使缓存无效/重新启动并禁用即时运行(Android Studio->首选项->即时运行,取消选中启用实例运行")在我的情况下有效.
Thank you @Dileep Patel I faced the same issue. App only worked if it's installed from Android Studio and crashed if it's installed by adb command. Invalidate caches/Restart and disabling Instant Run(Android Studio->Preferences->Instant Run, uncheck "Enable Instance Run") worked in my case.
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