listview点击一行高亮

来源：互联网发布：淘宝让你提供质检报告编辑：程序博客网时间：2024/05/17 18:28

有时候在点击listview一个item时,为了让用户知道点击是那一行了,那就被点击的一行背景颜色要和其他没有被点击的item区分开来,点击一个item,那item背景颜色就变色,这个怎么做呢,其实很简单,当listview点击事件时,可以得到一个position,代表是listview中那一个item被点击了,然后在adapter中的getView()方法中position相比较,凡是界面上的一定要在getView()方法中做操作,

package com.example.listview;import java.util.ArrayList;import android.app.Activity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.RelativeLayout;import android.widget.TextView;public class MainActivity extends Activity {private ListView listview;private ArrayList<String> datas;private LayoutInflater inflater;private MyAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);listview = (ListView) findViewById(R.id.listview);inflater = LayoutInflater.from(this);initData();adapter = new MyAdapter();listview.setAdapter(adapter);listview.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int position,long arg3) {adapter.setClickPosition(position);adapter.notifyDataSetChanged();}});}private void initData() {datas = new ArrayList<String>();for(int i=0;i<100;i++){datas.add("我是item-------");}}class MyAdapter extends BaseAdapter{private int clickPosition = -1;public void setClickPosition(int clickPosition) {this.clickPosition = clickPosition;}@Overridepublic int getCount() {return datas.size();}@Overridepublic Object getItem(int arg0) {return datas.get(arg0);}@Overridepublic long getItemId(int arg0) {return arg0;}@Overridepublic View getView(int position, View converView, ViewGroup arg2) {ViewHolder holder = null;if(converView==null){converView = inflater.inflate(R.layout.item, null);holder = new ViewHolder();holder.tvContent = (TextView) converView.findViewById(R.id.tvContent);holder.rlRoot = (RelativeLayout) converView.findViewById(R.id.rlRoot);    converView.setTag(holder);}else{holder = (ViewHolder) converView.getTag();}if(clickPosition==position){holder.rlRoot.setBackgroundColor(getResources().getColor(R.color.click_chang_color));}else{holder.rlRoot.setBackgroundColor(getResources().getColor(R.color.white));}holder.tvContent.setText(datas.get(position));return converView;}class ViewHolder{TextView tvContent;RelativeLayout rlRoot;}}}

效果：

0 0