GridView应用
GridView是一项显示二维的viewgroup，可滚动的网格。一般用来显示多张图片。
以下模拟九宫图的实现，当鼠标点击图片时会进行相应的跳转链接。
目录结构
main.xml布局文件，存放GridView控件
<?xml version="1.0" encoding="utf-8"?>
<!--
android:numColumns="auto_fit" ，GridView的列数设置为自动
android:columnWidth="90dp"，每列的宽度，也就是Item的宽度
android:stretchMode="columnWidth"，缩放与列宽大小同步
android:verticalSpacing="10dp"，两行之间的边距，如：行一(NO.0~NO.2)与行二(NO.3~NO.5)间距为10dp
android:horizontalSpacing="10dp"，两列之间的边距
-->
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
??? android:id="@+id/gridview"
??? android:layout_width="fill_parent"
??? android:layout_height="fill_parent"
??? android:numColumns="auto_fit"
??? android:verticalSpacing="10dp"
??? android:horizontalSpacing="10dp"
??? android:columnWidth="90dp"
??? android:stretchMode="columnWidth"
??? android:gravity="center"
/>
night_item.xml布局文件，存放显示控件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
??? xmlns:android="http://schemas.android.com/apk/res/android"
??? android:layout_height="wrap_content"
??? android:paddingBottom="4dip"
??? android:layout_width="fill_parent">
??? <ImageView android:layout_height="wrap_content"
??????? android:layout_width="wrap_content"
??????? android:layout_centerHorizontal="true"
??????? android:id="@+id/itemImage" >
??? </ImageView>
??? <TextView android:layout_width="wrap_content"
??????? android:layout_below="@+id/itemImage"
??????? android:layout_height="wrap_content"
??????? android:text="TextView01"
??????? android:layout_centerHorizontal="true"
??????? android:id="@+id/itemText">
??? </TextView>
</RelativeLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
??? <string name="hello">Hello World, GvActivity!</string>
??? <string name="app_name">九宫图</string>
??? <string name="test_name1">跳转到TestActivity1</string>
??? <string name="test_name2">跳转到TestActivity2</string>
??? <string name="test_name3">跳转到TestActivity3</string>
</resources>
清单文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
????? package="com.ljq.gv"
????? android:versionCode="1"
????? android:versionName="1.0">
??? <application android:icon="@drawable/icon" android:label="@string/app_name">
??????? <activity android:name=".GvActivity"
????????????????? android:label="@string/app_name">
??????????? <intent-filter>
??????????????? <action android:name="android.intent.action.MAIN" />
??????????????? <category android:name="android.intent.category.LAUNCHER" />
??????????? </intent-filter>
??????? </activity>
??????? <activity android:name=".TestActivity1" android:label="@string/test_name1"/>
??????? <activity android:name=".TestActivity2" android:label="@string/test_name2"/>
??????? <activity android:name=".TestActivity3" android:label="@string/test_name3"/>
??? </application>
??? <uses-sdk android:minSdkVersion="7" />
</manifest>
跳转类TestActivity1、TestActivity2、TestActivity3
package com.ljq.gv;
import android.app.Activity;
import android.os.Bundle;
public class TestActivity1 extends Activity {
???
??? @Override
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? //setContentView(R.layout.main);
??? }
}
package com.ljq.gv;
import android.app.Activity;
import android.os.Bundle;
public class TestActivity2 extends Activity {
???
??? @Override
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? //setContentView(R.layout.main);
??? }
}
package com.ljq.gv;
import android.app.Activity;
import android.os.Bundle;
public class TestActivity3 extends Activity {
???
??? @Override
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? //setContentView(R.layout.main);
??? }
}
类GvActivity
package com.ljq.gv;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class GvActivity extends Activity {
??? private String texts[] = null;
??? private int images[] = null;
???
??? public void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.main);
???????
??????? images=new int[]{R.drawable.p1, R.drawable.p2,
??????????????? R.drawable.p3, R.drawable.p4,
??????????????? R.drawable.p5,R.drawable.p6,
??????????????? R.drawable.p7,R.drawable.p8};
??????? texts = new String[]{ "宫式布局1", "宫式布局2",
??????????????? "宫式布局3", "宫式布局4",
??????????????? "宫式布局5", "宫式布局6",
??????????????? "宫式布局7", "宫式布局8"};
??????? GridView gridview = (GridView) findViewById(R.id.gridview);
??????? ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>();
??????? for (int i = 0; i < 8; i++) {
??????????? HashMap<String, Object> map = new HashMap<String, Object>();
??????????? map.put("itemImage", images[i]);
??????????? map.put("itemText", texts[i]);
??????????? lstImageItem.add(map);
??????? }
???????
??????? SimpleAdapter saImageItems = new SimpleAdapter(this,
??????????????? lstImageItem,// 数据源
??????????????? R.layout.night_item,// 显示布局
??????????????? new String[] { "itemImage", "itemText" },
??????????????? new int[] { R.id.itemImage, R.id.itemText });
??????? gridview.setAdapter(saImageItems);
??????? gridview.setOnItemClickListener(new ItemClickListener());
??? }
??? class ItemClickListener implements OnItemClickListener {
??????? /**
???????? * 点击项时触发事件
???????? *
???????? * @param parent? 发生点击动作的AdapterView
???????? * @param view 在AdapterView中被点击的视图(它是由adapter提供的一个视图)。
???????? * @param position 视图在adapter中的位置。
???????? * @param rowid 被点击元素的行id。
???????? */
??????? public void onItemClick(AdapterView<?> parent, View view, int position, long rowid) {
??????????? HashMap<String, Object> item = (HashMap<String, Object>) parent.getItemAtPosition(position);
??????????? //获取数据源的属性值
??????????? String itemText=(String)item.get("itemText");
??????????? Object object=item.get("itemImage");
??????????? Toast.makeText(GvActivity.this, itemText, Toast.LENGTH_LONG).show();
???????????
??????????? //根据图片进行相应的跳转
??????????? switch (images[position]) {
??????????? case R.drawable.p1:
??????????????? startActivity(new Intent(GvActivity.this, TestActivity1.class));//启动另一个Activity
??????????????? finish();//结束此Activity，可回收
??????????????? break;
??????????? case R.drawable.p2:
??????????????? startActivity(new Intent(GvActivity.this, TestActivity2.class));
??????????????? finish();
??????????????? break;
??????????? case R.drawable.p3:
??????????????? startActivity(new Intent(GvActivity.this, TestActivity3.class));
??????????????? finish();
??????????????? break;
??????????? }
???????????
??????? }
??? }
}
运行结果
转自：http://www.th7.cn/Article/wy/ht/201102/20110223203925.html