我正在尝试使用2种不同的布局实现ExpandableListView,到目前为止我花了一段时间才真正使1个视图组使用布局而另外2个视图组使用另一个。到目前为止,外观是需要的,但是当我在同一个视图组或两个不同的视图组上单击两次时,应用程序只会因arrayoutofbounds错误而崩溃。这是我的代码
@Override
public int getChildType(int groupPosition, int childPosition) {
int result;
if (groupPosition == 0)
{
Log.d("getChildType","Parent " + groupPosition + " detected. returning 0");
result = 0;
}
else
{
Log.d("getChildType","Parent " + groupPosition + " detected. returning 1");
result = 1;
}
return result;
}
@Override
public View getChildView(final int parentPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
Log.d("status","parent : "+parentPosition + "child : " + childPosition + "View : "+convertView + "ViewGroup : "+parent);
final String child_title = (String) getChild(parentPosition, childPosition);
int itemType = 5;
if (convertView == null)
{
LayoutInflater inflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
itemType = getChildType(parentPosition,childPosition);
switch (itemType)
{
case 0:
convertView = inflater.inflate(R.layout.activities2_child_layout, parent, false);
break;
case 1:
convertView = inflater.inflate(R.layout.activities2_child2_layout, parent, false);
break;
}
}
if (itemType == 0)
{
TextView child_textview = (TextView) convertView.findViewById(R.id.activities2_child_txt);
final ImageView img_Likes = (ImageView) convertView.findViewById(R.id.activities2_img_like);
final ImageView img_Dislikes = (ImageView) convertView.findViewById(R.id.activities2_img_dislike);
child_textview.setText(child_title);
}
else if(itemType == 1)
{
TextView child_textview = (TextView) convertView.findViewById(R.id.activities2_child2_txt);
child_textview.setText(child_title);
}
return convertView;
}
错误
06-15 11:54:14.753 29578-29578/android.omar.com.slidingtab E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.ArrayIndexOutOfBoundsException: length=2; index=2
06-15 12:02:53.343 31025-31025/android.omar.com.slidingtab W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41eb1378)
06-15 12:02:53.393 31025-31025/android.omar.com.slidingtab E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.ArrayIndexOutOfBoundsException: length=2; index=2
at android.widget.AbsListView$RecycleBin.addScrapView(AbsListView.java:6444)
at android.widget.ListView.layoutChildren(ListView.java:1603)
at android.widget.AbsListView.onLayout(AbsListView.java:2106)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:953)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.FrameLayout.onLayout(FrameLayout.java:460)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1687)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1545)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1450)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.FrameLayout.onLayout(FrameLayout.java:460)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1687)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1545)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1450)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.widget.FrameLayout.onLayout(FrameLayout.java:460)
at android.view.View.layout(View.java:13923)
at android.view.ViewGroup.layout(ViewGroup.java:4472)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1876)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1697)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4223)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:4787)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
at dalvik.system.NativeStart.main(Native Method)
希望快速回答。 非常感谢提前 奥马
答案 0 :(得分:7)
我认为您应该覆盖getChildTypeCount()并返回2
@Override
public int getChildTypeCount(){
return 2;
}
希望这会有所帮助。