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(自定义ListView控件)在ExpandableListAdapter中嵌套ListView

2015-10-07 21:44 411 查看
在ExpandableListAdapter中嵌套ListView

如果只是单纯的ListView

public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView,
ViewGroup parent) {
// TODO Auto-generated method stub

LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout view = (LinearLayout) layoutInflater.inflate(R.layout.dialog_item2, null);
view.setPadding(0, 0, 0, 15);

TextView tvCon = (TextView)view.findViewById(R.id.con);
tvCon.setText(conte[childPosition]);
tvCon.setPadding(0, 10, 0, 10);
tvCon.setTextSize(18);

MyAdapter2 m2=new MyAdapter2(teamNum*4+groupPosition,MainActivity.this);//teamNum*4+groupPosition=which国家
MyListView conlv=(MyListView)view.findViewById(R.id.conlv);
conlv.setAdapter(m2);

return view;

}


经试验,在模拟器中只显示两项,在手机中显示1项

若改成自定义的ListView控件,则正常显示

Activity外面写MyListView的类,如下图

至于为什么要单独成类我不清楚,但是试验过,如果把Class MyListView卸载Activity里面,并不会起作用,仍然只显示两项,但写在外面则显示正常

这是今天下午学长告诉我要这样写的,具体原因以后补上



MyListView.java代码

public class MyListView extends ListView {

public MyListView(Context context) {
super(context);
}

public MyListView(android.content.Context context,
android.util.AttributeSet attrs) {
super(context, attrs);
}

public MyListView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}

public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);

}

}


布局文件中MyListView,格式<包名.MyListView>

<com.example.euro2012_0930.MyListView
android:id="@+id/conlv"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.example.euro2012_0930.MyListView>


Activity.java中引用MyListView的代码

MyListView conlv=(MyListView)view.findViewById(R.id.conlv);


来个对比图(图一为改前效果,图二为改后效果)



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