扩展的ListView实例

  次阅读 来源:互联网(转载协议) 2015-11-27 13:37 我要评论(0)

今天从网上看了个扩展的listView的例子,感觉还蛮炫,自己也试着做了下。

由于比较简单,所有就直接上代码

public class ExtendedListView extends ExpandableListActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

MyExpandableListAdapter adapter=new MyExpandableListAdapter();

setListAdapter(adapter);

}

public class MyExpandableListAdapter extends BaseExpandableListAdapter{

public String[] groups={"我的好友","大学同学","高中同学"};

public String[][] childrens={{"小张","小李","小丽","向明"},{"向明","向明","向明","向明"},{"向明","向明","向明","向明"}};

public Object getChild(int groupPosition, int childPosition) {

// TODO Auto-generated method stub

return childrens[groupPosition][childPosition];

}

public long getChildId(int groupPosition, int childPosition) {

// TODO Auto-generated method stub

return childPosition;

}

public View getChildView(int groupPosition, int childPosition,

boolean isLastChild, View convertView, ViewGroup parent) {

// TODO Auto-generated method stub

TextView textView=getGenericView();

textView.setText(getChild(groupPosition, childPosition).toString());

return textView;

}

//新建一个TextView

public TextView getGenericView() {

// Layout parameters for the ExpandableListView

AbsListView.LayoutParams lp = new AbsListView.LayoutParams(

ViewGroup.LayoutParams.MATCH_PARENT, 64);

TextView textView = new TextView(ExtendedListView.this);

textView.setLayoutParams(lp);

// Center the text vertically

textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);

// Set the text starting position

textView.setPadding(36, 0, 0, 0);

return textView;

}

public int getChildrenCount(int groupPosition) {

// TODO Auto-generated method stub

return childrens[groupPosition].length;

}

public Object getGroup(int groupPosition) {

// TODO Auto-generated method stub

return groups[groupPosition];

}

public int getGroupCount() {

// TODO Auto-generated method stub

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