Android gridView item点击后变成另一张图

最新推荐文章于 2022-06-01 15:02:15 发布

吴朗

最新推荐文章于 2022-06-01 15:02:15 发布

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分类专栏： Android 文章标签： Android gridview

本文链接：https://blog.youkuaiyun.com/qy_qingyan/article/details/24113865

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本文介绍如何在Android应用中实现GridView项点击后图片自动切换的功能，通过自定义Adapter来实现在点击不同项时展示不同图片的效果。

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Android gridView item点击后变成另一张图

package com.cdc.jsonaquery;

import android.app.Activity;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;


public class MainActivity extends Activity {
	
	
	private GridView gv;
	private Menu1Adapter adapter;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		
		
		setContentView(R.layout.activity_main);
		
		
		gv = (GridView) findViewById(R.id.main_gridView);
		
		adapter = new Menu1Adapter(this);
		//去除背景色
		gv.setSelector(new ColorDrawable(Color.TRANSPARENT));
		gv.setAdapter(adapter);
		
		gv.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
					long arg3) {
				// TODO Auto-generated method stub
				
				adapter.setSeclection(arg2);
				
				adapter.notifyDataSetChanged();
				
			}
		});
		
		
		
		
		
	

		
		
	}
	

	
	
	

}

Adapter

package com.cdc.jsonaquery;


import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class Menu1Adapter extends BaseAdapter {
	
	private int clickTemp = -1;

	private LayoutInflater layoutInflater;

	public Menu1Adapter(Context context) {
		layoutInflater = LayoutInflater.from(context);
	}

	private int icons[] = { R.drawable.yangguangzhengwu,
			R.drawable.zhengwugongkai, R.drawable.jicengdangjian,
			R.drawable.pufajiangtang, R.drawable.wenhuashuwu,
			R.drawable.yuanchengjiaoyu, R.drawable.kuailechufang,
			R.drawable.xinmeitipindao, R.drawable.weishengbaojian,
			R.drawable.nongzishangqing, R.drawable.nongjizhichuang,
			R.drawable.xinnongcun, R.drawable.jiatingyule,
			R.drawable.wangluoxinwen, R.drawable.wodekongjian,
			R.drawable.ifaboochaoshi, R.drawable.ifabooshequ,
			R.drawable.ifabooems, R.drawable.wangzhidaohang,
			R.drawable.dianshidaohang, R.drawable.dianshizhibo,
			R.drawable.yuqingfenxi, R.drawable.youjiangdiaocha,
			R.drawable.tiandiguangbo};

	
	private int icons2[] = { R.drawable.yangguangzhengwuxuanzhong,
			R.drawable.zhengwugongkaixuanzhong, R.drawable.jicengdangjianxuanzhong,
			R.drawable.pufajiangtangxuanzhong, R.drawable.wenhuashuwuxuanzhong,
			R.drawable.yuanchengjiaoyuxuanzhong, R.drawable.kuailechufangxuanzhong,
			R.drawable.xinmeitipindaoxuanzhong, R.drawable.weishengbaojianxuanzhong,
			R.drawable.nongzishangqingxuanzhong, R.drawable.nongjizhichuangxuanzhong,
			R.drawable.xinnongcunxuanzhong, R.drawable.jiatingyulexuanzhong,
			R.drawable.wangluoxinwenxuanzhong, R.drawable.wodekongjianxuanzhong,
			R.drawable.ifaboochaoshixuanzhong, R.drawable.ifabooshequxuanzhong,
			R.drawable.ifabooemsxuanzhong, R.drawable.wangzhidaohangxuanzhong,
			R.drawable.dianshidaohangxuanzhong, R.drawable.dianshizhiboxuanzhong,
			R.drawable.yuqingfenxixuanzhong, R.drawable.youjiangdiaochaxuanzhong,
			R.drawable.tiandiguangboxuanzhong};
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return icons.length;
	}

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

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return 0;
	}

	
	public void setSeclection(int position) {
		clickTemp = position;
		}
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		// TODO Auto-generated method stub
		if (convertView == null) {
			convertView = layoutInflater.inflate(R.layout.gridview_item, null);
		}
		ImageView iv = (ImageView) convertView
				.findViewById(R.id.gridview_iv_first_tubiao);
		
		
		
		if (clickTemp == position) {
			iv.setImageResource(icons2[position]);
			} else {
				iv.setImageResource(icons[position]);
			}

		return convertView;

	}

}

布局activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    
    
  >
    <View 
        android:id="@+id/temp"
        android:layout_width="match_parent"
        android:layout_height="1dp"/>
    
       <GridView
                android:id="@+id/main_gridView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:columnWidth="90dp"
                android:gravity="center"
               android:layout_below="@id/temp"
               	android:numColumns="3"
               	
               	
               	
            
              
                android:stretchMode="spacingWidthUniform"
                android:verticalSpacing="10dp" >
            </GridView>
    

 
</RelativeLayout>

gridview_item.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    
    
  >
    <View 
        android:id="@+id/temp"
        android:layout_width="match_parent"
        android:layout_height="1dp"/>
    
       <GridView
                android:id="@+id/main_gridView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:columnWidth="90dp"
                android:gravity="center"
               android:layout_below="@id/temp"
               	android:numColumns="3"
               	
               	
               	
            
              
                android:stretchMode="spacingWidthUniform"
                android:verticalSpacing="10dp" >
            </GridView>
    

 
</RelativeLayout>