Android GridView 使用示例

GridView 常用的属性

XML 属性	相关的Java方法	说明
android:columnWidth	setColumnWidth(int)	设置列的宽度
android:gravity	setGravity(int)	设置对齐方式
android:horizontalSpacing	setHorizontalSpacing(int)	设置各元素之间的水平间距
android:numColumns	setNumColumns(int)	设置列数
android:stretchMode	setStretchMode(int)	设置拉伸模式
android:verticalSpacing	setVerticalSpacing(int)	设置各元素之间的垂直间距

页面布局文件：

<?xml version="1.0" encoding="utf-8"?>

主程序代码：

package com.toby.personal.testlistview;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.GridView;import android.widget.ImageView;import android.widget.SimpleAdapter;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        final int[] imageIds = new int[]{                R.drawable.img01, R.drawable.img02, R.drawable.img03, R.drawable.img04,                R.drawable.img05, R.drawable.img06, R.drawable.img07, R.drawable.img08,                R.drawable.img09, R.drawable.img10, R.drawable.img11, R.drawable.img12        };        List> listItems = new ArrayList<>();        for (int i = 0; i < imageIds.length; ++i) {            Map listItem = new HashMap<>();            listItem.put("image", imageIds[i]);            listItems.add(listItem);        }        GridView gridView = (GridView) findViewById(R.id.gridView);        SimpleAdapter simpleAdapter = new SimpleAdapter(this, listItems, R.layout.cell,                new String[] { "image" }, new int[] {R.id.cellImage});        gridView.setAdapter(simpleAdapter);        final ImageView imageView = (ImageView) findViewById(R.id.imageView);        gridView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {                imageView.setImageResource(imageIds[i]);            }            @Override            public void onNothingSelected(AdapterView<?> adapterView) {            }        });        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {                imageView.setImageResource(imageIds[i]);            }        });        imageView.setImageResource(imageIds[0]);    }}

主程序中用到的cell布局文件和cellImage对象，在cell.xml文件中：

<?xml version="1.0" encoding="utf-8"?>

程序运行效果：

GridView 使用示例

参考文献：《疯狂Android讲义（第2版）》

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