android 获取网络图片显示在Gallery中
private Gallery myGallery01;
/* 图片资源 */
private String[] myImageURL = new String[]
{
????? "http://www.chinajilin.com.cn/att/site1/20071116/"
????????? + "img-1196620280651.jpg",
????? "http://image.szonline.net/UploadFile/album/2010/7/71315/2/"
????????? + "20100702111104_64763.jpg",
????? "http://www.fzl020.com/uploads/userup/0904/"
????????? + "30031RI2U.jpg",
????? "http://lh6.ggpht.com/_2N-HvtdpHZY/SZ357lAfZNE/AAAAAAAABOE/"
????????? + "dfxBtdINgPA/s144-c/20090220.jpg",
????? "http://news.xinhuanet.com/travel/2008-03/18/"
????????? + "xin_0620305181402218149794.jpg" };
@Override
public void onCreate(Bundle savedInstanceState)
{
??? super.onCreate(savedInstanceState);
??? setContentView(R.layout.main);
??? myGallery01 = (Gallery) findViewById(R.id.myGallery01);
??? myGallery01.setAdapter(new myInternetGalleryAdapter(this));
}
/* BaseAdapter */
public class myInternetGalleryAdapter extends BaseAdapter
{
??? private Context myContext;
??? private int mGalleryItemBackground;
??? /* 构造函数 Context */
??? public myInternetGalleryAdapter(Context c)
??? {
????? this.myContext = c;
????? // 检索 这方面的主题风格的属性
????? TypedArray a = myContext?
????????? .obtainStyledAttributes(R.styleable.Gallery);
?????
????? //得到资源标识
????? mGalleryItemBackground = a.getResourceId(
????????? R.styleable.Gallery_android_galleryItemBackground, 0);
???? // 返回 TypedArray?
????? a.recycle();
??????
??? }
??? /* */
??? public int getCount()
??? {
????? return myImageURL.length;
??? }
??? /* ID */
??? public Object getItem(int position)
??? {
????? return position;
??? }
??? public long getItemId(int position)
??? {
????? return position;
??? }
??? /* */
??? public float getScale(boolean focused, int offset)
??? {
????? /* Formula: 1 / (2 ^ offset) */
????? return Math.max(0, 1.0f / (float) Math.pow(2, Math
????????? .abs(offset)));
??? }
??? public View getView(int position, View convertView,
??????? ViewGroup parent)
??? {
????? /* ImageView */
????? ImageView imageView = new ImageView(this.myContext);
????? try
????? {
??????? URL aryURI = new URL(myImageURL[position]);
??????? /* 打开连接 */
??????? URLConnection conn = aryURI.openConnection();?
??????? conn.connect();
??????? /* 转变为 InputStream */
??????? InputStream is = conn.getInputStream();
??????? /* 将InputStream转变为Bitmap */
??????? Bitmap bm = BitmapFactory.decodeStream(is);
??????? /* 关闭InputStream */
??????? is.close();
??????? /*添加图片*/
??????? imageView.setImageBitmap(bm);
????? } catch (IOException e)
????? {
??????? e.printStackTrace();
????? }
????? // 填充ImageView
????? imageView.setScaleType(ImageView.ScaleType.FIT_XY);
????? /* 设置布局参数*/
????? imageView.setLayoutParams(new Gallery.LayoutParams(200, 150));
????? /* 设置背景资源 */
????? imageView.setBackgroundResource(mGalleryItemBackground);
????? return imageView;
??? }
}
?
转自：http://hi.baidu.com/cq_yajun/blog/item/d90923f98d3c0969034f5683.html
