Android：控件GridView的使用

GirdView的一些屬性：

android:numColumns="auto_fit" --------列數設置爲自動
android:columnWidth="90dp"，----------每列的寬度，也就是Item的寬度
android:stretchMode="columnWidth"------縮放與列寬大小同步
android:verticalSpacing="10dp"----------垂直邊距
android:horizontalSpacing="10dp"-------水平邊距

1、準備數據源

2、新建適配器

3、加載適配器

MainActivity.java

package com.example.testgridview;

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 MainActivity extends Activity {
    private GridView gview;
    private List<Map<String, Object>> data_list;
    private SimpleAdapter sim_adapter;
    // 圖片封裝爲一個數組
    private int[] icon = { R.drawable.address_book, R.drawable.calendar,
            R.drawable.camera, R.drawable.clock, R.drawable.games_control,
            R.drawable.messenger, R.drawable.ringtone, R.drawable.settings,
            R.drawable.speech_balloon, R.drawable.weather, R.drawable.world,
            R.drawable.youtube };
    private String[] iconName = { "通訊錄", "日曆", "照相機", "時鐘", "遊戲", "短信", "鈴聲",
            "設置", "語音", "天氣", "瀏覽器", "視頻" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.test);
        gview = (GridView) findViewById(R.id.gview);
        //新建List
        data_list = new ArrayList<Map<String, Object>>();
        //獲取數據
        getData();
        //新建適配器
        String [] from ={"image","text"};
        int [] to = {R.id.image,R.id.text};
        sim_adapter = new SimpleAdapter(this, data_list, R.layout.item, from, to);
        //配置適配器
        gview.setAdapter(sim_adapter);
    }

    
    
    public List<Map<String, Object>> getData(){        
        //cion和iconName的長度是相同的，這裏任選其一都可以
        for(int i=0;i<icon.length;i++){
            Map<String, Object> map = new HashMap<String, Object>();
            map.put("image", icon[i]);
            map.put("text", iconName[i]);
            data_list.add(map);
        }
            
        return data_list;
    }
    

}

<span style="color: rgb(57, 57, 57); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 14px; line-height: 21px; background-color: rgb(250, 247, 239);">test.xml</span>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:background="#000"
    >
    
<GridView 
        android:id="@+id/gview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="auto_fit"    
        android:columnWidth="80dp"
        android:stretchMode="columnWidth"
        ></GridView>
</LinearLayout>

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" 
    android:gravity="center"
    android:padding="10dp"
    >
    
    
<ImageView 
    android:src="@drawable/ic_launcher"
    android:id="@+id/image"
    android:layout_width="60dp"
    android:layout_height="60dp"
    
    />

<TextView 
    android:id="@+id/text"
    android:layout_marginTop="5dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="#ffffff"
    android:text="文字"
    />
</LinearLayout>