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<2015.6.20>
1.碰到了人生第一个闪退闪退问题：原来是button绑定监听器之后，监听的内容ProgressBar忘记findviewbyid出来了~~
06-20 14:30:01.879: E/AndroidRuntime(11040): FATAL EXCEPTION: main 06-20 14:30:01.879: E/AndroidRuntime(11040): java.lang.NullPointerException 06-20 14:30:01.879: E/AndroidRuntime(11040): at com.you.edittext.MainActivity$2.onClick(MainActivity.java:44) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.view.View.performClick(View.java:4171) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.view.View$PerformClick.run(View.java:17097) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.os.Handler.handleCallback(Handler.java:615) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.os.Handler.dispatchMessage(Handler.java:92) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.os.Looper.loop(Looper.java:137) 06-20 14:30:01.879: E/AndroidRuntime(11040): at android.app.ActivityThread.main(ActivityThread.java:4914) 06-20 14:30:01.879: E/AndroidRuntime(11040): at java.lang.reflect.Method.invokeNative(Native Method) 06-20 14:30:01.879: E/AndroidRuntime(11040): at java.lang.reflect.Method.invoke(Method.java:511) 06-20 14:30:01.879: E/AndroidRuntime(11040): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:808) 06-20 14:30:01.879: E/AndroidRuntime(11040): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:575) 06-20 14:30:01.879: E/AndroidRuntime(11040): at dalvik.system.NativeStart.main(Native Method)
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原文地址：http://www.cnblogs.com/xiaoxiaoxin-love-ping/p/4590524.html
