GridView 设置选中状态

GridView设置选中状态

设置原理 是将bean中的数据加入一个字段isSelect  默认填充数据的时候 ，默认选中的第一个值 设置为true，其余的都设置为false.

然后 点击单个item的时候 ，循环list<bean> 将选中的position 的item设置为true，其余的都设置为false  ,然后adapter notify.

activity

  

   

    

     

    
    

     

      package com.example.refreshgridview;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import java.util.ArrayList;
     
    
   

    

     

    
    

     

      import java.util.List;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import android.app.Activity;
     
    
   

    

     

    
    

     

      import android.os.Bundle;
     
    
   

    

     

    
    

     

      import android.view.View;
     
    
   

    

     

    
    

     

      import android.widget.AdapterView;
     
    
   

    

     

    
    

     

      import android.widget.AdapterView.OnItemClickListener;
     
    
   

    

     

    
    

     

      import android.widget.GridView;
     
    
   

    

     

    
    

     

      import android.widget.Toast;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import com.example.refreshgridview.PullToRefreshBase.OnRefreshListener;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class MainActivity extends Activity {
     
    
   

    

     

    
    

     
	private PullToRefreshGridView mPullRefreshGridView;
     
    
   

    

     

    
    

     
	private GridView mGridView;
     
    
   

    

     

    
    

     
	private GridViewAdapter adapter;
     
    
   

    

     

    
    

     
	private List<GridInfo> list = new ArrayList<GridInfo>();
     
    
   

    

     

    
    

     
	@Override
     
    
   

    

     

    
    

     
	protected void onCreate(Bundle savedInstanceState) {
     
    
   

    

     

    
    

     
		super.onCreate(savedInstanceState);
     
    
   

    

     

    
    

     

      		setContentView(R.layout.activity_main);
     
    
   

    

     

    
    

     

      		mPullRefreshGridView = (PullToRefreshGridView) findViewById(R.id.video_gridView);
     
    
   

    

     

    
    

     

      		mPullRefreshGridView.init(PullToRefreshGridView.MODE_BOTH);
     
    
   

    

     

    
    

     

      		mGridView = mPullRefreshGridView.getRefreshableView();
     
    
   

    

     

    
    

     

      		mPullRefreshGridView.setOnRefreshListener(refreshListener);
     
    
   

    

     

    
    

     
		for (int i = 0; i < 40; i++) {
     
    
   

    

     

    
    

     
			GridInfo gridInfo = new GridInfo();
     
    
   

    

     

    
    

     

      			gridInfo.setTitle((i)+"");
     
    
   

    

     

    
    

     
			if(i==0){
     
    
   

    

     

    
    

     

      				gridInfo.setSelect(true);
     
    
   

    

     

    
    

     

      			}else{
     
    
   

    

     

    
    

     

      				gridInfo.setSelect(false);
     
    
   

    

     

    
    

     

      			}
     
    
   

    

     

    
    

     

      			list.add(gridInfo);
     
    
   

    

     

    
    

     

      		}
     
    
   

    

     

    
    

     

      		adapter = new GridViewAdapter(MainActivity.this,list);
     
    
   

    

     

    
    

     

      		mGridView.setAdapter(adapter);
     
    
   

    

     

    
    

     

      		mGridView.setOnItemClickListener(new OnItemClickListener() {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
			@Override
     
    
   

    

     

    
    

     
			public void onItemClick(AdapterView<?> parent, View view,
     
    
   

    

     

    
    

     
					int position, long id) {
     
    
   

    

     

    
    

     
				
     
    
   

    

     

    
    

     
				   for(int i=0;i<list.size();i++){
     
    
   

    

     

    
    

     
		               if (position == i) {//当前选中的Item改变背景颜色
     
    
   

    

     

    
    

     

      		            	   list.get(i).setSelect(true);
     
    
   

    

     

    
    

     

      		               } else {
     
    
   

    

     

    
    

     

      		            	   list.get(i).setSelect(false);
     
    
   

    

     

    
    

     

      		               }
     
    
   

    

     

    
    

     

      		            }
     
    
   

    

     

    
    

     

      				   adapter.notifyDataSetChanged();
     
    
   

    

     

    
    

     
				
     
    
   

    

     

    
    

     

      			}
     
    
   

    

     

    
    

     

      		});
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	private OnRefreshListener refreshListener = new OnRefreshListener() {
     
    
   

    

     

    
    

     
		@Override
     
    
   

    

     

    
    

     
		public void onRefresh(int mode) {
     
    
   

    

     

    
    

     
			if (PullToRefreshGridView.MODE_PULL_DOWN_TO_REFRESH == mPullRefreshGridView.getCurrentMode()) {
     
    
   

    

     

    
    

     

      				Toast.makeText(MainActivity.this, "下拉刷新", Toast.LENGTH_SHORT).show();
     
    
   

    

     

    
    

     

      				mPullRefreshGridView.onRefreshComplete();
     
    
   

    

     

    
    

     

      			} else if (mode == PullToRefreshGridView.MODE_PULL_UP_TO_REFRESH) {
     
    
   

    

     

    
    

     
				// 加载更多
     
    
   

    

     

    
    

     

      				Toast.makeText(MainActivity.this, "上拉加载更多", Toast.LENGTH_SHORT).show();
     
    
   

    

     

    
    

     

      				mPullRefreshGridView.onRefreshComplete();
     
    
   

    

     

    
    

     

      			}
     
    
   

    

     

    
    

     

      		}
     
    
   

    

     

    
    

     

      	};
     
    
   

    

     

    
    

     

      }
     
    
  
 

adapter

  

   

    

     

    
    

     

      package com.example.refreshgridview;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      import java.util.ArrayList;
     
    
   

    

     

    
    

     

      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.TextView;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class GridViewAdapter extends BaseAdapter {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    private List<GridInfo> mList = new ArrayList<GridInfo>();
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    private Context mContext;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    public GridViewAdapter(Context context,List<GridInfo> list) {
     
    
   

    

     

    
    

     
        super();
     
    
   

    

     

    
    

     
        this.mContext = context;
     
    
   

    

     

    
    

     
        this.mList = list;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public int getCount() {
     
    
   

    

     

    
    

     
        return mList.size();
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public GridInfo getItem(int position) {
     
    
   

    

     

    
    

     
        return mList.get(position);
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public long getItemId(int position) {
     
    
   

    

     

    
    

     
        return position;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    @Override
     
    
   

    

     

    
    

     
    public View getView(int position, View convertView, ViewGroup parent) {
     
    
   

    

     

    
    

     

          	ChildHolderOne holder;
     
    
   

    

     

    
    

     
        if (convertView == null) {
     
    
   

    

     

    
    

     

                  convertView = LayoutInflater.from(mContext).inflate(R.layout.item_grid_live_show, parent, false);
     
    
   

    

     

    
    

     

                  holder = new ChildHolderOne();
     
    
   

    

     

    
    

     

                  holder.tvTitle = (TextView)convertView.findViewById(R.id.title_tv);
     
    
   

    

     

    
    

     

                  convertView.setTag(holder);
     
    
   

    

     

    
    

     

              } else {
     
    
   

    

     

    
    

     

                  holder = (ChildHolderOne) convertView.getTag();
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
        final GridInfo gridInfo = mList.get(position);
     
    
   

    

     

    
    

     
        if(gridInfo.isSelect() == true){
     
    
   

    

     

    
    

     

              	holder.tvTitle.setBackgroundColor(mContext.getResources().getColor(R.color.grays));
     
    
   

    

     

    
    

     

              } else {
     
    
   

    

     

    
    

     

              	holder.tvTitle.setBackgroundColor(mContext.getResources().getColor(R.color.gray_max));
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     
        final String number = gridInfo.getTitle();
     
    
   

    

     

    
    

     

              holder.tvTitle.setText(number);
     
    
   

    

     

    
    

     
        
     
    
   

    

     

    
    

     
        
     
    
   

    

     

    
    

     
        return convertView;
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	class ChildHolderOne {
     
    
   

    

     

    
    

     

      		TextView tvTitle;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	
     
    
   

    

     

    
    

     

      }
     
    
  
 

bean

  

   

    

     

    
    

     

      package com.example.refreshgridview;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public class GridInfo {
     
    
   

    

     

    
    

     
	private String title;
     
    
   

    

     

    
    

     
	private boolean isSelect;
     
    
   

    

     

    
    

     
	public String getTitle() {
     
    
   

    

     

    
    

     
		return title;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	public void setTitle(String title) {
     
    
   

    

     

    
    

     
		this.title = title;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	public boolean isSelect() {
     
    
   

    

     

    
    

     
		return isSelect;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     
	public void setSelect(boolean isSelect) {
     
    
   

    

     

    
    

     
		this.isSelect = isSelect;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      }
     
    
  
 

很简单效果 ，和listview单选 ，多选都是一个道理，就是记住并操作当前位置的数据 然后刷新。

DEMO源码

这个源码 是在上一篇给GridView添加 下拉刷新 下拉加载的demo基础上加的，所以这个里面也有GridView上拉下拉的功能。希望可以帮到大家。

如果还有其它问题 可以加入 我的qq群： Android开发经验交流群 454430053 互相讨论交流。

文章来源: wukong.blog.csdn.net，作者：再见孙悟空_，版权归原作者所有，如需转载，请联系作者。

原文链接：wukong.blog.csdn.net/article/details/53172429