本文介绍下android的个grid view的用法,

gridview是一项显示二维的viewgroup，可滚动的网格。网格项时自动插入的布局使用listadapter。
1.创建一个新的项目:gridview.

2,打开 res/layout/main.xml文件,插入一下代码:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
/>

</LinearLayout>

做好以后就可以在屏幕上显示一个grid view

3.打开gridview.java首先要导入包:

package cn.gridview;

import android.widget.GridView;
import android.widget.Toast;
import android.app.Activity;
import android.os.Bundle;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView;
import android.view.View;

在onCreate添加方法:

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview=(GridView)findViewById(R.id.gridview);//找到main.xml中定义gridview 的id
gridview.setAdapter(new ImageAdapter(this));//调用ImageAdapter.java
gridview.setOnItemClickListener(new OnItemClickListener(){//监听事件
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(gridview.this, ""+position,Toast.LENGTH_SHORT).show();//显示信息;
}
});
}

ImageAdapter.java


package cn.gridview;

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

public class ImageAdapter extends BaseAdapter {
private Context mContext;

public ImageAdapter(Context c)
{
mContext=c;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mThumbIds.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;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub

ImageView imageview;
if(convertView==null)
{
imageview=new ImageView(mContext);
imageview.setLayoutParams(new GridView.LayoutParams(85, 85));
imageview.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageview.setPadding(8,8,8,8);
}
else
{
imageview=(ImageView) convertView;
}
imageview.setImageResource(mThumbIds[position]);
return imageview;
}

private Integer[] mThumbIds={//显示的图片数组

R.drawable.sample_2,R.drawable.sample_3,
R.drawable.sample_4,R.drawable.sample_5,
R.drawable.sample_6,R.drawable.sample_7,
R.drawable.sample_0,R.drawable.sample_1,
R.drawable.sample_2,R.drawable.sample_3,
R.drawable.sample_4,R.drawable.sample_5,
R.drawable.sample_6,R.drawable.sample_7,
R.drawable.sample_0,R.drawable.sample_1,
R.drawable.sample_2,R.drawable.sample_3,
R.drawable.sample_4,R.drawable.sample_5,
R.drawable.sample_6,R.drawable.sample_7,
};

}

运行后界面如图: