Activity 的类属性没有设置成public

FATAL EXCEPTION: main

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.zccf/com.zccf.activity.ProductConfirmActivity}: java.lang.IllegalAccessException: access to class not allowed

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1983)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:130)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:4745)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: Caused by: java.lang.IllegalAccessException: access to class not allowed

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.Class.newInstanceImpl(Native Method)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.Class.newInstance(Class.java:1319)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.Instrumentation.newActivity(Instrumentation.java:1053)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:130)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:4745)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)

11-30 17:06:13.133 17558-17558/com.zccf E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)