Android中单选全选反选

xml中

item中

java中

package com.example.allandreverse;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;



import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private ListView list_view;
	private CheckAdapter checkAdapter;
	private CheckBox allBox;
	private Button reverse;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		list_view = (ListView)findViewById(R.id.list_view);
		allBox = (CheckBox)findViewById(R.id.all);
		reverse = (Button)findViewById(R.id.reverse);
		
		List list = new ArrayList();
		for (int i = 0; i < 15; i++) {
			list.add("这是条目" + i);
		}
		
		checkAdapter = new CheckAdapter(getApplicationContext(), list);
		list_view.setAdapter(checkAdapter);
		
		//设置全选
		allBox.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				boolean flag = allBox.isChecked();
				
				for (int i = 0; i < checkAdapter.getSelect().size(); i++) {
					checkAdapter.getSelect().set(i, flag);
				}
				checkAdapter.notifyDataSetChanged();
				
			}
		});
		
		//反选
		reverse.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				if (! checkAdapter.getSelect().contains(true)) {
					Toast.makeText(MainActivity.this, "qingxuanz", 0).show();
				}else {
					for (int i = 0; i < checkAdapter.getSelect().size(); i++) {
						if (checkAdapter.getSelect().get(i)) {
							checkAdapter.getSelect().set(i, false);
						}else {
							checkAdapter.getSelect().set(i, true);
						}
					}
					
					if (checkAdapter.getSelect().contains(false)) {
						allBox.setChecked(false);
					}
					
					checkAdapter.notifyDataSetChanged();
				}
			}
		});
		
	}

	private class CheckAdapter extends BaseAdapter {
		private List list;
		private Context context;
		
		//创建一个集合 去记录选中与未选中的状态 
		LinkedList linkedList = new LinkedList();

		public CheckAdapter(Context context, List list) {
			// TODO Auto-generated constructor stub
			this.list = list;
			this.context = context;
			
			for (int i = 0; i < list.size(); i++) {
				linkedList.add(false);
			}
			
		}
		//对外提供一个方法 获取这个集合
		private List getSelect() {
			return linkedList;
		}
		

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return list.size();
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return list.get(position);
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public View getView(final int position, View convertView,
				ViewGroup parent) {
			if (convertView == null) {
				convertView = View.inflate(context, R.layout.item, null);
			}
			CheckBox ck = (CheckBox) convertView.findViewById(R.id.ck);
			TextView tView = (TextView) convertView.findViewById(R.id.tv);

			tView.setText(list.get(position));

			ck.setChecked(linkedList.get(position));
			//对checkBox点击进行监听
			ck.setOnClickListener(new OnClickListener() {
				
				@Override
				public void onClick(View v) {
					//点中的时候改成相反的值
					linkedList.set(position, ! linkedList.get(position));
					
					//点击的同时还要去判断全选
					if (linkedList.contains(false)) {
						allBox.setChecked(false);
					}else {
						allBox.setChecked(true);
					}
					
					notifyDataSetChanged();
				}
			});
			
			return convertView;
		}

	}

}