GridView基本构建Demo

Java代码 
public class Main extends Activity implements OnItemSelectedListener,  
        OnItemClickListener {  
    private ImageView imageView;  
    private int[] resIds = new int[] { R.drawable.item1, R.drawable.item2,  
            R.drawable.item3, R.drawable.item4, R.drawable.item5,  
            R.drawable.item6, R.drawable.item7, R.drawable.item8,  
            R.drawable.item9, R.drawable.item10, R.drawable.item11,  
            R.drawable.item12, R.drawable.item13, R.drawable.item14,  
            R.drawable.item15 };  
 
    @Override 
    public void onItemSelected(AdapterView<?> parent, View view, int position,  
            long id) {  
        imageView.setImageResource(resIds[position]);  
    }  
 
    @Override 
    public void onNothingSelected(AdapterView<?> parent) {  
        // TODO Auto-generated method stub  
 
    }  
 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position,  
            long id) {  
        imageView.setImageResource(resIds[position]);  
 
    }  
 
    @Override 
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
        GridView gridView = (GridView) findViewById(R.id.gridview);  
 
        List<Map<String, Object>> cells = new ArrayList<Map<String, Object>>();  
        for (int i = 0; i < resIds.length; i++) {  
            Map<String, Object> cell = new HashMap<String, Object>();  
            cell.put("imageview", resIds[i]);  
            cells.add(cell);  
        }  
        SimpleAdapter simpleAdapter = new SimpleAdapter(this, cells,  
                R.layout.cell, new String[] { "imageview" },  
                new int[] { R.id.imageview });  
        gridView.setAdapter(simpleAdapter);  
        imageView = (ImageView) findViewById(R.id.imageview);  
        gridView.setOnItemSelectedListener(this);  
        gridView.setOnItemClickListener(this);  
        imageView.setImageResource(resIds[0]);  
 
    }  
} 

public class Main extends Activity implements OnItemSelectedListener,
OnItemClickListener {
private ImageView imageView;
private int[] resIds = new int[] { R.drawable.item1, R.drawable.item2,
R.drawable.item3, R.drawable.item4, R.drawable.item5,
R.drawable.item6, R.drawable.item7, R.drawable.item8,
R.drawable.item9, R.drawable.item10, R.drawable.item11,
R.drawable.item12, R.drawable.item13, R.drawable.item14,
R.drawable.item15 };

@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
imageView.setImageResource(resIds[position]);
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub

}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
imageView.setImageResource(resIds[position]);

}

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridView = (GridView) findViewById(R.id.gridview);

List<Map<String, Object>> cells = new ArrayList<Map<String, Object>>();
for (int i = 0; i < resIds.length; i++) {
Map<String, Object> cell = new HashMap<String, Object>();
cell.put("imageview", resIds[i]);
cells.add(cell);
}
SimpleAdapter simpleAdapter = new SimpleAdapter(this, cells,
R.layout.cell, new String[] { "imageview" },
new int[] { R.id.imageview });
gridView.setAdapter(simpleAdapter);
imageView = (ImageView) findViewById(R.id.imageview);
gridView.setOnItemSelectedListener(this);
gridView.setOnItemClickListener(this);
imageView.setImageResource(resIds[0]);

}
}

main.xml:
Java代码 
<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="fill_parent" 
    android:layout_height="fill_parent" android:gravity="center_horizontal">  
    <GridView android:id="@+id/gridview" android:layout_width="fill_parent" 
        android:layout_height="wrap_content" android:numColumns="5" 
        android:padding="20dp" android:horizontalSpacing="6dp" 
        android:verticalSpacing="6dp" />  
    <ImageView android:id="@+id/imageview" android:layout_width="fill_parent" 
        android:layout_height="200dp" />  
</LinearLayout> 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:gravity="center_horizontal">
<GridView android:id="@+id/gridview" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:numColumns="5"
android:padding="20dp" android:horizontalSpacing="6dp"
android:verticalSpacing="6dp" />
<ImageView android:id="@+id/imageview" android:layout_width="fill_parent"
android:layout_height="200dp" />
</LinearLayout>


cell.xml:
Java代码 
<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="fill_parent" 
    android:layout_height="fill_parent">  
    <ImageView android:id="@+id/imageview" android:layout_width="48dp" 
        android:layout_height="48dp"  />  
</LinearLayout>