实现listview单选效果

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单选listview效果，默认点击第一个item,当已经选中的item再次点击的时候让item变成不选中的情况，当点击其他的item的时候选中其他的item。（图片背景果然是太粉嫩了。）
这里写图片描述

（1）listview的代码（不解释了，大家改吧改吧希望能用到你们的项目当中。）

import java.util.ArrayList;import com.example.singchooselistviewdemo.Model.Data;import com.example.singchooselistviewdemo.adapter.MyAdapter;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;public class MainActivity extends Activity {    private ListView listview;    private ArrayList<Data> dataList;    private MyAdapter mAdapter;    private int beforePostion;    private boolean isChecked;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        listview = (ListView) findViewById(R.id.listview);        initData();        getSingData();    }    private void initData() {        dataList = new ArrayList<Data>();        for (int i = 0; i < 10; i++) {            Data data = new Data();            data.setId(i + "");            data.setName("data" + i);            dataList.add(data);        }        mAdapter = new MyAdapter(MainActivity.this, dataList);        listview.setAdapter(mAdapter);    }    private int afterposition;    private void getSingData() {        beforePostion = 0;        mAdapter.setSelectItem(beforePostion);        listview.setChoiceMode(ListView.CHOICE_MODE_SINGLE);        listview.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {                afterposition = position;                if (afterposition == beforePostion) {                    if (!isChecked) {                        beforePostion = afterposition;                        mAdapter.setSelectItem(-1);                        isChecked = true;                    } else {                        beforePostion = position;                        mAdapter.setSelectItem(position);                        isChecked = false;                    }                } else {                    isChecked = false;                    beforePostion = position;                    mAdapter.setSelectItem(position);                }                mAdapter.notifyDataSetInvalidated();            }        });    }}

（2）adapter

import java.util.ArrayList;import com.example.singchooselistviewdemo.R;import com.example.singchooselistviewdemo.Model.Data;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;public class MyAdapter extends BaseAdapter {    private Context context;    private ArrayList<Data> dataList;    public MyAdapter(Context context, ArrayList<Data> dataList) {        this.context = context;        this.dataList = dataList;    }    @Override    public int getCount() {        return dataList.size();    }    @Override    public Data getItem(int position) {        return dataList.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        if (convertView == null) {            convertView = View.inflate(context, R.layout.item, null);        }        Data data = dataList.get(position);        ViewHolder holder = ViewHolder.getHolder(convertView);        holder.tvText.setText(data.getName());        if (position == pos) {            holder.ivIcon.setVisibility(View.VISIBLE);        } else {            holder.ivIcon.setVisibility(View.GONE);        }        return convertView;    }    static class ViewHolder {        public ImageView ivIcon;        public TextView tvText;        public ViewHolder(View convertView) {            ivIcon = (ImageView) convertView.findViewById(R.id.iv_icon);            tvText = (TextView) convertView.findViewById(R.id.tv_text);        }        public static ViewHolder getHolder(View convertView) {            ViewHolder viewHolder = (ViewHolder) convertView.getTag();            if (viewHolder == null) {                viewHolder = new ViewHolder(convertView);                convertView.setTag(viewHolder);            }            return viewHolder;        }    }    private int pos = -1;    public void setSelectItem(int i) {        pos = i;    }    public int getSelectItem() {        return pos;    }}

这样就可以实现了listview单选效果了。有问题可以沟通（qq:1250882930）
这里写链接内容

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