Android实现圆角ListView效果

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package com.example.roundcorner.adapter;
 
import java.util.List;
 
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
 
import com.example.roundcorner.R;
import com.example.roundcorner.entity.ListBean;
 
public class ListAdapter extends BaseAdapter {
 private List mList;
 private Context mContext;
 
 public ListAdapter(Context mContext,List mList) {
 this.mList = mList;
 this.mCOntext= mContext.getApplicationContext();
 }
 
 @Override
 public int getCount() {
 return this.mList.size();
 }
 
 @Override
 public Object getItem(int position) {
 return this.mList.get(position);
 }
 
 @Override
 public long getItemId(int position) {
 return position;
 }
 
 @Override
 public int getItemViewType(int position) {
 // TODO Auto-generated method stub
 return super.getItemViewType(position);
 }
 
 @Override
 public int getViewTypeCount() {
 // TODO Auto-generated method stub
 return super.getViewTypeCount();
 }
 
 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
 ViewHolder holder = null;
 if (cOnvertView== null) {
 holder = new ViewHolder();
 cOnvertView= LayoutInflater.from(this.mContext).inflate(
  R.layout.listview_item, null, false);
 holder.textView = (TextView) convertView
  .findViewById(R.id.listview_item_textview);
 holder.imageView = (ImageView) convertView
  .findViewById(R.id.listview_item_imageview);
 convertView.setTag(holder);
 } else {
 holder = (ViewHolder) convertView.getTag();
 }
 
 if(position==0){
 
 if(position == getCount()-1){ //只有一项
 convertView.setBackgroundResource(R.drawable.app_list_corner_round);
 }else{ //第一项
 convertView.setBackgroundResource(R.drawable.app_list_corner_round_top);
 }
 }else if(position == getCount()-1){
 convertView.setBackgroundResource(R.drawable.app_list_corner_round_bottom);
 }else{
 convertView.setBackgroundResource(R.drawable.app_list_corner_round_center);
 }
 
 ListBean lb = mList.get(position);
 holder.textView.setText(lb.getKey());
 
 return convertView;
 }
 
 static class ViewHolder {
 TextView textView;
 ImageView imageView;
 }
}

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package com.example.roundcorner;
 
import java.util.ArrayList;
import java.util.List;
 
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
 
import com.example.roundcorner.adapter.ListAdapter;
import com.example.roundcorner.entity.ListBean;
 
public class MainActivity extends Activity {
 
 private List data;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 
 initData();
 
 findView();
 }
 
 private void findView() {
 ListView mListView = (ListView) findViewById(R.id.mListView);
 
 ListAdapter mAdapter = new ListAdapter(this,data);
 mListView.setAdapter(mAdapter);
 }
 
 private void initData() {
 data = new ArrayList();
 for (int i = 0; i <5; i++) {
 ListBean lb = new ListBean();
 lb.setKey("设置 "+i);
 data.add(lb);
 }
 }
 
}