Android 之 ListView 點擊響應代碼？

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ListView 點擊響應代碼(如下)，以前都是正確的：

1 private class MusicListItemClickListener implements OnItemClickListener {  2   3   4     @Override  5     public void onItemClick(AdapterView<?> parent, View view, int position,long id) {  6     }  7 }  

可參閱以前的一博文：http://blog.csdn.net/91program/article/details/39232721

在新的工程使用時，先提示 onItemClick 需要刪除 @Override。我直接將 onItemClick 刪除，再自動增加函數時，發現自動增加的函數變成如下所示的，參數的參數發生了變化，特別是第一個參數，由 AdapterView 變成 AdapterViewCompat。代碼不再提示錯誤，運行之！

 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 }  

運行時出現錯誤。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  

對比之前的代碼，與現在的代碼，發現可能是 AdapterViewCompat 引起的。所以強制將 OnItemClickListener 聲明為 AdapterView 的成員，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 }  

這樣自動增加的 onItemClick 函數終於和以前一樣了。
運行之，正確！

Android 之 ListView 點擊響應代碼？