一：问题
今天在 OPPO R15 上调试代码，安装后发现无法启动。报错如下
8/com.banger.xxxxx E/AndroidRuntime: FATAL EXCEPTION: mainProcess: com.banger.xxxxxx, PID: 9358java.lang.RuntimeException: Unable to instantiate application com.banger.xxxxx.ui.BaseApplication: java.lang.ClassNotFoundException: Didn't find class "com.banger.xxxx.ui.BaseApplication" on path: DexPathList[[zip file "/data/app/com.banger.xxxx-YINxedP-pIswZbzon0qenQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.banger.xiaowei-YINxedP-pIswZbzon0qenQ==/lib/arm64, /system/fake-libs64, /data/app/com.banger.xxxxx-YINxedP-pIswZbzon0qenQ==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]at android.app.LoadedApk.makeApplication(LoadedApk.java:1053)at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6138)at android.app.ActivityThread.-wrap1(Unknown Source:0)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1861)at android.os.Handler.dispatchMessage(Handler.java:106)at android.os.Looper.loop(Looper.java:183)at android.app.ActivityThread.main(ActivityThread.java:7014)at java.lang.reflect.Method.invoke(Native Method)at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:514)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:888)Caused by: java.lang.ClassNotFoundException: Didn't find class "com.banger.xiaowei.ui.BaseApplication" on path: DexPathList[[zip file "/data/app/com.banger.xxxxx-YINxedP-pIswZbzon0qenQ==/base.apk"],nativeLibraryDirectories=[/data/app/com.banger.xiaowei-YINxedP-pIswZbzon0qenQ==/lib/arm64, /system/fake-libs64, /data/app/com.banger.xxxxxx-YINxedP-pIswZbzon0qenQ==/base.apk!/lib/arm64-v8a, /system/lib64, /vendor/lib64]]at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)at java.lang.ClassLoader.loadClass(ClassLoader.java:379)at java.lang.ClassLoader.loadClass(ClassLoader.java:312)at android.app.Instrumentation.newApplication(Instrumentation.java:1087)at android.app.LoadedApk.makeApplication(LoadedApk.java:1047)at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6138) at android.app.ActivityThread.-wrap1(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1861) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:183) at android.app.ActivityThread.main(ActivityThread.java:7014) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:514) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:888)
报错的重点在 这里Caused by: java.lang.ClassNotFoundException: Didn't find class "com.banger.xiaowei.ui.BaseApplication" 就是找不到类。
二：解决问题
这是Android studio 的 instant run给我们留下的坑。需要在Android studio 中设置下
-
Perferences
image - Build,Execution, Deployment
- instant run
-
Enable instant run to hot swap code/resouce changes on deploy(default enabled) ，默认这个是勾选的，关闭这个功能，即可正常运行调试 app 。
image
