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2020-03-05 13:01:14.454 22678-22678/com.ctrip.pluginapplication E/AndroidRuntime: FATAL EXCEPTION: main Process: com.ctrip.pluginapplication, PID: 22678 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ctrip.pluginapplication/com.ctrip.pluginapplication.ProxyActivity}: java.lang.ClassCastException: com.ctrip.pluginapplication.MainActivity cannot be cast to com.ctrip.standard.AppInterface at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3318) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3429) at android.app.ActivityThread.-wrap12(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009) at android.os.Handler.dispatchMessage(Handler.java:109) at android.os.Looper.loop(Looper.java:166) at android.app.ActivityThread.main(ActivityThread.java:7555) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:469) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:963) Caused by: java.lang.ClassCastException: com.ctrip.pluginapplication.MainActivity cannot be cast to com.ctrip.standard.AppInterface at com.ctrip.pluginapplication.ProxyActivity.onCreate(ProxyActivity.java:46) at android.app.Activity.performCreate(Activity.java:7343) at android.app.Activity.performCreate(Activity.java:7333) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1219) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3271) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3429)  at android.app.ActivityThread.-wrap12(Unknown Source:0)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2009)  at android.os.Handler.dispatchMessage(Handler.java:109)  at android.os.Looper.loop(Looper.java:166)  at android.app.ActivityThread.main(ActivityThread.java:7555)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:469)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:963)  2020-03-05 13:01:14.507 22678-22678/com.ctrip.pluginapplication I/Process: Sending signal. PID: 22678 SIG: 9