问题
I am facing with a ClassNotFoundException when I deploy my android application on my android phone.
I tried on android phone which has Android 6.0.1 and Android 7.1.1
Whereas when I deploy the same application on an emulator which is (Nexus 5X API 26) and runs Android 8.0 I don't face any problem. The app loads smoothly.
Build.gradle (app) file has
android {
compileSdkVersion 28
defaultConfig {
applicationId "de.pfiva.mobile.voiceassistant"
minSdkVersion 23
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
I have included a dependency from local maven. This dependency basically have plain java classes (POJO). In some of the classes there are fields of type java.time.LocalDateTime
How can I solve this issue. Looking for suggestions.
Thanks.
Exception :
E/AndroidRuntime: FATAL EXCEPTION: main
Process: de.pfiva.mobile.voiceassistant, PID: 25245
java.lang.NoClassDefFoundError: Failed resolution of: Ljava/time/LocalDateTime;
at java.lang.Class.getDeclaredFields(Native Method)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:150)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:115)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:164)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory.create(CollectionTypeAdapterFactory.java:53)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at retrofit2.converter.gson.GsonConverterFactory.responseBodyConverter(GsonConverterFactory.java:64)
at retrofit2.Retrofit.nextResponseBodyConverter(Retrofit.java:330)
at retrofit2.Retrofit.responseBodyConverter(Retrofit.java:313)
at retrofit2.ServiceMethod$Builder.createResponseConverter(ServiceMethod.java:739)
at retrofit2.ServiceMethod$Builder.build(ServiceMethod.java:172)
at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:170)
at retrofit2.Retrofit$1.invoke(Retrofit.java:147)
at java.lang.reflect.Proxy.invoke(Proxy.java:813)
at $Proxy0.getNLUData(Unknown Source)
at de.pfiva.mobile.voiceassistant.activities.MainActivity.onCreate(MainActivity.java:41)
at android.app.Activity.performCreate(Activity.java:6826)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1121)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2656)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2764)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1502)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6173)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
Caused by: java.lang.ClassNotFoundException: Didn't find class "java.time.LocalDateTime" on path: DexPathList[[zip file "/data/app/de.pfiva.mobile.voiceassistant-1/base.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_dependencies_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_0_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_1_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_2_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_3_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_4_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_5_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_6_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_7_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_8_apk.apk", zip file "/data/app/de.pfiva.mobile.voiceassistant-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/de.pfiva.mobile.voiceassistant-1/lib/arm64, /system/lib64, /vendor/lib64]]
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 java.lang.Class.getDeclaredFields(Native Method)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:150)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(ReflectiveTypeAdapterFactory.java:115)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(ReflectiveTypeAdapterFactory.java:164)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:100)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at com.google.gson.internal.bind.CollectionTypeAdapterFactory.create(CollectionTypeAdapterFactory.java:53)
at com.google.gson.Gson.getAdapter(Gson.java:423)
at retrofit2.converter.gson.GsonConverterFactory.responseBodyConverter(GsonConverterFactory.java:64)
at retrofit2.Retrofit.nextResponseBodyConverter(Retrofit.java:330)
at retrofit2.Retrofit.responseBodyConverter(Retrofit.java:313)
at retrofit2.ServiceMethod$Builder.createResponseConverter(ServiceMethod.java:739)
at retrofit2.ServiceMethod$Builder.build(ServiceMethod.java:172)
at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:170)
at retrofit2.Retrofit$1.invoke(Retrofit.java:147)
at java.lang.reflect.Proxy.invoke(Proxy.java:813)
at $Proxy0.getNLUData(Unknown Source)
at de.pfiva.mobile.voiceassistant.activities.MainActivity.onCreate(MainActivity.java:41)
at android.app.Activity.performCreate(Activity.java:6826)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1121)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2656)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2764)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1502)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6173)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
回答1:
As stated here java.time package is available in API 26 (Android O) and on.
来源：https://stackoverflow.com/questions/51896657/class-not-found-for-java-time-localdatetime-while-deploying-app-on-android-phone