Android 中listview的全选、全不选、反选、获得选中条目数据

          

先说明接下来要实现的ListView+CheckBox支持的功能：

    1.  外部点击“编辑”（长按ListView的某一项也可），出现复选框；

    2.  支持全选、复选、全不选

    3.  支持获取选中的数据的信息

  下面是mainactivity的xml布局

  

   下面是listview条目布局：

   

   下面是bean类

package com.example.listview;

public class DataBean {

	 public String id;  
	  
	    public String title;  
	  
	    public String desc;  
	  
	    public boolean isCheck;  //该属性主要标志CheckBox是否选中
	  
	    public DataBean(String id, String title, String desc) {  
	        this.id = id;  
	        this.title = title;  
	        this.desc = desc;  
	    }  
	
	
}

        定义数据显示的Adapter，在该Adapter中，我们需要实现两个重要的功能：控制是否显示CheckBox； 控制CheckBox是否显示，代码中注释了这个 ，直接就是CheckBox显示的情况，想看隐藏的，把代码中的注释去掉即可，然后再xml中让CheckBox不显示。

       

package com.example.listview;

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.CheckBox;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter {

	private Context mContext;

	private List mDatas;

	private LayoutInflater mInflater;

//	public boolean flage = false;

	public MyAdapter(Context mContext, List mDatas) {
		this.mContext = mContext;
		this.mDatas = mDatas;

		mInflater = LayoutInflater.from(this.mContext);

	}

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

	@Override
	public Object getItem(int arg0) {
		// TODO Auto-generated method stub
		return mDatas.get(arg0);
	}

	@Override
	public long getItemId(int arg0) {
		// TODO Auto-generated method stub
		return arg0;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup viewGroup) {
		ViewHolder holder = null;
		if (convertView == null) {
			holder = new ViewHolder();
			// 条目布局
			convertView = mInflater.inflate(R.layout.listadata, null);

			holder.checkboxOperateData = (CheckBox) convertView
					.findViewById(R.id.checkbox_operate_data);
			holder.textTitle = (TextView) convertView
					.findViewById(R.id.text_title);
			holder.textDesc = (TextView) convertView
					.findViewById(R.id.text_desc);
			convertView.setTag(holder);
		} else {

			holder = (ViewHolder) convertView.getTag();
		}

		final DataBean dataBean = mDatas.get(position);

		if (dataBean != null) {
			holder.textTitle.setText(dataBean.title);
			holder.textDesc.setText(dataBean.desc);
			// 根据isSelected来设置checkbox的显示状况  
//			if (flage) {  
//                holder.checkboxOperateData.setVisibility(View.VISIBLE);  
//            } else {  
//                holder.checkboxOperateData.setVisibility(View.GONE);  
//            }  
//			
			holder.checkboxOperateData.setChecked(dataBean.isCheck);
			//注意这里设置的不是onCheckedChangListener，还是值得思考一下的  
            holder.checkboxOperateData.setOnClickListener(new View.OnClickListener() {  
                @Override  
                public void onClick(View v) {  
                    if (dataBean.isCheck) {  
                        dataBean.isCheck = false;  
                    } else {  
                        dataBean.isCheck = true;  
                    }  
                }  
            });  
			
		}

		return convertView;
	}

	class ViewHolder {

		public CheckBox checkboxOperateData;

		public TextView textTitle;

		public TextView textDesc;
	}

、、、、下面是主代码

package com.example.listview;

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

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

	private Button button;  
	  
    private ListView listView;  
  
    private List mDatas;  
  
    private MyAdapter mAdapter; 
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		button = (Button) findViewById(R.id.edit1);  
        listView = (ListView) findViewById(R.id.listview);
        
        mDatas = new ArrayList<>();  
        for (int i = 0; i < 20; i++) {  
  
            DataBean dataBean = new DataBean("" + i, "上邪", "山无棱，天地合，乃敢与君绝");  
            mDatas.add(dataBean);  
        }  
  
        mAdapter = new MyAdapter(this, mDatas);  
        listView.setAdapter(mAdapter); 
	}
	
	/** 
     * 编辑、取消编辑 
     * @param view 
     */  
    public void btnEditList(View view) {  
  
//        mAdapter.flage = !mAdapter.flage;  
//  
//        if (mAdapter.flage) {  
//            button.setText("取消");  
//        } else {  
//            button.setText("编辑");  
//        }  
//  
//        mAdapter.notifyDataSetChanged();  
    }  
    /** 
     * 全选 
     * @param view 
     */  
    public void btnSelectAllList(View view) {  
//        if (mAdapter.flage) {  
            for (int i = 0; i < mDatas.size(); i++) {  
                mDatas.get(i).isCheck = true;  
            }  
  
            mAdapter.notifyDataSetChanged();  
//        }  
    }  
    /** 
     * 全不选 
     * @param view 
     */  
    public void btnNoList(View view) {  
  
//        if (mAdapter.flage) {  
            for (int i = 0; i < mDatas.size(); i++) {  
                mDatas.get(i).isCheck = false;  
            }  
  
            mAdapter.notifyDataSetChanged();  
//        }  
    }  
    
    /** 
     * 反选 
     * @param view 
     */  
    public void btnfanxuanList(View view) {  
//        if (mAdapter.flage) {  
            for (int i = 0; i < mDatas.size(); i++) {  
                if (mDatas.get(i).isCheck) {  
                    mDatas.get(i).isCheck = false;  
                } else {  
                    mDatas.get(i).isCheck = true;  
                }  
            }  
  
            mAdapter.notifyDataSetChanged();  
//        }  
    }  
    /** 
     * 获取选中数据 
     * @param view 
     */  
    public void btnOperateList(View view) {  
  
        List ids = new ArrayList<>();  
  
//        if (mAdapter.flage) {  
  
            for (int i = 0; i < mDatas.size(); i++) {  
                if (mDatas.get(i).isCheck) {  
                    ids.add(mDatas.get(i).id);  
                }  
            }  
  
            Toast.makeText(MainActivity.this,ids.toString(), Toast.LENGTH_SHORT).show();  
            Log.e("TAG", ids.toString());  
//        }  
    }
    
    
	

}
 
  
 }