Android控件学习笔记之 GridView(实现九宫格)

实现九宫格

Main.java

package cn.test;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class Main extends Activity {
private Button btn_viewItemAndText;
private Button btn_viewGridViewList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initControl();
setControlListener();
}

/**
* 初始化控件
*/
private void initControl(){
btn_viewItemAndText=(Button)findViewById(R.id.btn_viewItemAndText);
btn_viewGridViewList=(Button)findViewById(R.id.btn_viewGridViewList);
}

/**
* 增加控件监听
*/
private void setControlListener(){
btn_viewItemAndText.setOnClickListener(onClickViewItemAndTextListener);
btn_viewGridViewList.setOnClickListener(onCLickViewGridViewListListener);
}

/**
* 图文列表按钮事件
*/
private View.OnClickListener onClickViewItemAndTextListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.v("OnClick ", "btn_viewItemAndText");
Intent intent = new Intent(Main.this, ItemAndTextListView.class);
startActivity(intent);
}
};

private View.OnClickListener onCLickViewGridViewListListener=new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.v("OnClick ", "btn_viewGridViewList");
Intent intent = new Intent(Main.this, GridViewList.class);
startActivity(intent);
}
};
} GridViewList.java

package cn.test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.widget.GridView;
import android.widget.SimpleAdapter;

public class GridViewList extends Activity {
private GridView gridview;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gridview);
initControl();
}

/**
* 初始加载控件
*/
private void initControl(){
SimpleAdapter adapter = new SimpleAdapter(this, getData(), R.layout.gridviewitem, new String[]{"ItemImage", "ItemText"}, new int[]{R.id.ItemImage, R.id.ItemText});
gridview = (GridView)findViewById(R.id.gridView1);
gridview.setAdapter(adapter);
}

/**
* 模拟数据
* @return
*/
private List<Map<String, Object>> getData() {
List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
for (int i = 0; i <20; i++) {
Map<String, Object> item = new HashMap<String, Object>();
item.put("ItemImage", R.drawable.icon);
item.put("ItemText", "九宫项目" + i);
items.add(item);
}
return items;

}
}

gridview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">

<GridView android:layout_height="wrap_content" android:id="@+id/gridView1"
android:layout_width="match_parent" android:numColumns="auto_fit"
android:horizontalSpacing="10dp" android:verticalSpacing="10dp"
android:columnWidth="90dp" android:stretchMode="columnWidth"
android:gravity="center">

</GridView>

</LinearLayout>

gridviewitem.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/ItemImage"></ImageView>
<TextView android:layout_height="wrap_content" android:id="@+id/ItemText"
android:layout_width="wrap_content" android:layout_below="@+id/ItemImage"></TextView>

</RelativeLayout> AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="cn.test"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />

<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".Main"
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=".ItemAndTextListView"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.itemAndTextListView" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".GridViewList"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.gridViewList" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>