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>