欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  数据库

Android报java.lang.IllegalAccessException: access to class n

程序员文章站 2022-03-16 15:37:06
...

06-27 04:48:02.123: ERROR/AndroidRuntime(787): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{net.android.surfacetest/net.android.surfacetest.MainActivity}: java.lang.IllegalAccessException: access to class not al

06-27 04:48:02.123: ERROR/AndroidRuntime(787): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{net.android.surfacetest/net.android.surfacetest.MainActivity}: java.lang.IllegalAccessException: access to class not allowed
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1569)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.os.Looper.loop(Looper.java:123)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread.main(ActivityThread.java:3683)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at java.lang.reflect.Method.invoke(Method.java:507)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at dalvik.system.NativeStart.main(Native Method)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): Caused by: java.lang.IllegalAccessException: access to class not allowed
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at java.lang.Class.newInstanceImpl(Native Method)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at java.lang.Class.newInstance(Class.java:1409)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
06-27 04:48:02.123: ERROR/AndroidRuntime(787): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1561)

Android出现以上是错误日志信息

原因1:Activity没有注册

原因2:包名不匹配

原因3:类不是public的,在报错类的定义前加public即可。

其中原因1和3是最常见的