不幸的是，Ionic 应用程序在真正的 android 设备上停止了

Question

我在 ionic 3 中开发了一个应用程序，它在浏览器中运行良好。 2019.06.16之前可以正常使用吗？不幸的是，现在它在 android 设备上停止了。

6 月 16 日之后显示构建错误，所以我尝试了以下步骤

    ionic cordova platform rm android
    ionic cordova platform add android@8.0.0 
    ionic cordova plugin add cordova-plugin-androidx 
    ionic cordova plugin add cordova-plugin-androidx-adapter
    cordova plugin add cordova-android-support-gradle-release --save

然后构建成功但是'Unfortunately stopped on device'。

下面是终端的输出

07-18 10:52:06.167 593-593/io.ionic.starter E/AndroidRuntime: FATAL EXCEPTION: main Process: io.ionic.starter, PID: 593 java.lang.RuntimeException: Unable to get provider com.vaenow.appupdate.android.GenericFileProvider: java.lang.ClassNotFoundException: Didn't find class "com.vaenow.appupdate.android.GenericFileProvider" on path: DexPathList[[zip file "/data/app/io.ionic.starter-1/base.apk"],nativeLibraryDirectories=[/data/app/io.ionic.starter-1/lib/arm, /vendor/lib, /system/lib]] at android.app.ActivityThread.installProvider(ActivityThread.java:6490) at android.app.ActivityThread.installContentProviders(ActivityThread.java:6082) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6022) at android.app.ActivityThread.access00(ActivityThread.java:211) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1766) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:6946) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) Caused by: java.lang.ClassNotFoundException: Didn't find class "com.vaenow.appupdate.android.GenericFileProvider" on path: DexPathList[[zip file "/data/app/io.ionic.starter-1/base.apk"],nativeLibraryDirectories=[/data/app/io.ionic.starter-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.ActivityThread.installProvider(ActivityThread.java:6475) at android.app.ActivityThread.installContentProviders(ActivityThread.java:6082) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6022) at android.app.ActivityThread.access00(ActivityThread.java:211) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1766) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:145) at android.app.ActivityThread.main(ActivityThread.java:6946) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) Suppressed: java.lang.ClassNotFoundException: com.vaenow.appupdate.android.GenericFileProvider 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) ... 13 more Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

请帮帮我

Answer 1

我以前也遇到过同样的问题，我是这样做的：

delete your node_modules folder manually

npm cache clean (doesnt not work in npm v5)

npm update

npm install

再次尝试重新安装 android 平台。如果这不起作用，我建议使用最新更新创建一个新的离子项目，并将所有文件迁移到新文件并再次测试。

祝你好运！

不幸的是，Ionic 应用程序在真正的 android 设备上停止了

Ionic app unfortunately stopped on real android device

apk

android-studio

ionic-framework

ionic3