Android 网络视图控件 GridView的实现

本文主要介绍Android 网络视图控件 GridView的实现，具体操作看代码。

1.GridViewActivity.java

//网络视图控件
public class GridViewActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.grid_view);
		setTitle("网络视图控件GridView！");
		
		GridView gridView=(GridView)findViewById(R.id.grid_view);
		gridView.setAdapter(new ImageAdapter(this));
		
	}
	
	public class ImageAdapter extends BaseAdapter{

		private Context mContext;
		public ImageAdapter(Context context){
			mContext=context;
		}
		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return mImageIds.length;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return null;
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return 0;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			ImageView imageView;
			if(convertView==null){
				imageView=new ImageView(mContext);
				imageView.setLayoutParams(new GridView.LayoutParams(85,85));
				imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
				imageView.setPadding(8, 8, 8, 8);
			}else{
				imageView=(ImageView)convertView;
			}
			imageView.setImageResource(mImageIds[position]);
			return imageView;
		}
		
	}

	private Integer[] mImageIds = {
          R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2,
          R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5,
          R.drawable.sample_6, R.drawable.sample_7,R.drawable.sample_8,
          R.drawable.sample_9,R.drawable.sample_10,R.drawable.sample_11};

}

2.布局文件grid_view.xml

<?xml version="1.0" encoding="utf-8"?>

<GridView 
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"
	android:id="@+id/grid_view"
	android:numColumns="auto_fit"
	android:verticalSpacing="10dp"
	android:horizontalSpacing="10dp"
	android:columnWidth="90dp"
	android:stretchMode="columnWidth"
	android:gravity="center" >
	
</GridView>

3.注意：需要在AndroidManifest.xml注册相应Activity.