处理程序中的问题与Android中的消息 [英] problem in Handler with messages in android
问题描述
我在我的应用程序中使用处理程序,在一个屏幕上,单击一个按钮将调用一些代码集。要调用这组代码,我正在向处理程序发送消息并覆盖处理消息方法。第一次单击该按钮时,处理程序运行正常,并且执行了该组代码。当我第二次单击按钮时,出现以下异常。
I am using Handlers in my application, in one screen by clicking a button some set of codes will be called.To invoke that set of code i am sending messages to the Handler and overridden the handle messages method. First time when clicking the button the handler working perfectly and the set of code is executed. When i clicked the button for the second time i am getting the following exception.
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): FATAL EXCEPTION: main
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): android.util.AndroidRuntimeException: { what=1 when=7381217 obj=android.app.AlertDialog@462b5c58 } This message is already in use.
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.MessageQueue.enqueueMessage(MessageQueue.java:171)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.Handler.sendMessageAtTime(Handler.java:457)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.Handler.sendMessageDelayed(Handler.java:430)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.Handler.sendMessage(Handler.java:367)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at com.mysnob.utils.MessageDialog$8.onClick(MessageDialog.java:93)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:158)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.Handler.dispatchMessage(Handler.java:99)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.os.Looper.loop(Looper.java:144)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at android.app.ActivityThread.main(ActivityThread.java:4937)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at java.lang.reflect.Method.invokeNative(Native Method)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at java.lang.reflect.Method.invoke(Method.java:521)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
05-03 09:45:25.703: ERROR/AndroidRuntime(1971): at dalvik.system.NativeStart.main(Native Method)
我可以理解,在再次发送相同消息时,我遇到了这个异常。但是我不知道如何解决这个问题,如果有人知道,请帮助我。
I can understand that while sending the same message again i am getting this exception. But i don't know how to solve this problem, if anyone knows please help me.
谢谢
Rajapandian
Rajapandian
推荐答案
永远不要重用Message obj。如果您需要一次又一次地播种Message,请记住每次发送消息时都要新建一个Message Message。
You should never reuse a Message obj. Remember to new a new Message obj each time you send a message if you need to seed Message again and again.
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