GridView使用简介

步骤和ListView差不多：

1.布局文件中声明一个GridView

2.Activity中得到GridView对象，设置适配器

3.在适配器中处理显示（每一个item也可用xml来布局）

代码：

activity代码

package com.itheima.mobilesafe.activity;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

import com.itheima.mobilesafe.R;

public class HomeActivity extends Activity {

	private GridView gv_menu;
	private String[] names = new String[]{"手机防盗","通讯卫士","软件管理","进程管理","流量统计","手机杀毒","缓存清理","高级工具","设置中心"};
	private int[] ids = new int[]{R.drawable.safe,R.drawable.callmsgsafe,R.drawable.app,R.drawable.taskmanager,R.drawable.netmanager,
	R.drawable.trojan,R.drawable.sysoptimize,R.drawable.atools,R.drawable.settings};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_home);
		
		gv_menu = (GridView) findViewById(R.id.gv_menu);
		
		gv_menu.setAdapter(new MyAdapter());
	// 添加item单击事件监听器
		gv_menu.setOnItemClickListener(new OnItemClickListener() {


			@Override
			public void onItemClick(AdapterView parent, View view,
					int position, long id) {
				switch (position) {
				case 0:// 
					break;
				case :// 

					break;
				default:
					break;
				}
			}
		});
	}
	
	private class MyAdapter extends BaseAdapter{

		@Override
		public int getCount() {
			return names.length;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			
			View view = View.inflate(HomeActivity.this, R.layout.home_item, null);
			ImageView iv_icon = (ImageView) view.findViewById(R.id.iv_icon);
			TextView tv_name = (TextView) view.findViewById(R.id.tv_name);
			
			iv_icon.setImageResource(ids[position]);
			tv_name.setText(names[position]);
			
			return view;
		}
		@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;
		}

		
		
	}
}

activityd的xml布局文件中声明GridView

GridViewd的item的xml布局文件