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ListView 点击响应代码(如下)，以前都是正确的：
1 private class MusicListItemClickListener implements OnItemClickListener { 2 3 4 @Override 5 public void onItemClick(AdapterView<?> parent, View view, int position,long id) { 6 } 7 }
可参阅以前的一博文：http://blog.csdn.net/91program/article/details/39232721
在新的工程使用时，先提示 onItemClick 需要删除 @Override。我直接将 onItemClick 删除，再自动增加函数时，发现自动增加的函数变成如下所示的，参数的参数发生了变化，特别是第一个参数，由 AdapterView 变成 AdapterViewCompat。代码不再提示错误，运行之！
1 private class contactsListItemClickListener implements OnItemClickListener { // AdapterViewCompat.OnItemClickListener 2 @Override 3 public void onItemClick(AdapterViewCompat<?> arg0, View arg1, int arg2, 4 long arg3) { 5 // TODO Auto-generated method stub 6 int position = arg2; 7 int id = (int) arg3; 8 Log.i(phoneBookInfo.TAG, "position: " + Integer.toString(position) + " id: " + Integer.toString(id)); 9 } 10 }
运行时出现错误。提示如下：
D/AndroidRuntime(19395): Shutting down VM
W/dalvikvm(19395): threadid=1: thread exiting with uncaught exception (group=0x4001b6a8)
E/AndroidRuntime(19395): FATAL EXCEPTION: main
E/AndroidRuntime(19395): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.hs.leozheng.backuprecords/com.hs.leozheng.backuprecords.MainActivity}: java.lang.ClassCastException: com.hs.leozheng.backuprecords.MainActivity$contactsListItemClickListener
E/AndroidRuntime(19395): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1734)
E/AndroidRuntime(19395): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1753)
E/AndroidRuntime(19395): at android.app.ActivityThread.access$1500(ActivityThread.java:155)
E/AndroidRuntime(19395): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:999)
E/AndroidRuntime(19395): at android.os.Handler.dispatchMessage(Handler.java:130)
E/AndroidRuntime(19395): at android.os.Looper.loop(SourceFile:351)
E/AndroidRuntime(19395): at android.app.ActivityThread.main(ActivityThread.java:3820)
E/AndroidRuntime(19395): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(19395): at java.lang.reflect.Method.invoke(Method.java:538)
E/AndroidRuntime(19395): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:969)
E/AndroidRuntime(19395): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:727)
E/AndroidRuntime(19395): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(19395): Caused by: java.lang.ClassCastException: com.hs.leozheng.backuprecords.MainActivity$contactsListItemClickListener
E/AndroidRuntime(19395): at com.hs.leozheng.backuprecords.MainActivity.findViews(MainActivity.java:140)
E/AndroidRuntime(19395): at com.hs.leozheng.backuprecords.MainActivity.onCreate(MainActivity.java:57)
E/AndroidRuntime(19395): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1082)
E/AndroidRuntime(19395): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1698)
E/AndroidRuntime(19395): ... 11 more
对比之前的代码，与现在的代码，发现可能是 AdapterViewCompat 引起的。所以强制将 OnItemClickListener 声明为 AdapterView 的成员，如下：
1 private class contactsListItemClickListener implements AdapterView.OnItemClickListener { 2 @Override 3 public void onItemClick(AdapterView<?> parent, View view, int position, 4 long id) { 5 // TODO Auto-generated method stub 6 Log.i(phoneBookInfo.TAG, "position: " + Integer.toString(position) + " id: " + Long.toString(id)); 7 } 8 }
这样自动增加的 onItemClick 函数终于和以前一样了。
运行之，正确！
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原文地址：http://www.cnblogs.com/91program/p/5193348.html
