ImageView是Android程序中经常用到的组件，它将一个图片显示到屏幕上。

在UI xml定义一个ImageView如下：

public void onCreate(Bundle savedInstanceState) {

     super.onCreate(savedInstanceState);

     setContentView(R.layout.myimage);

     ImageView image1 = (ImageView) findViewById(R.myImage.image);

     //Bitmap bitmap = getLoacalBitmap("/aa/aa.jpg"); //从本地取图片

     Bitmap bitmap =

getHttpBitmap("http://blog.3gstdy.com/wp-content/themes/twentyten/images/headers/path.jpg");

//从网上取图片

     image1 .setImageBitmap(bitmap);    //设置Bitmap

}

/**

* 加载本地图片

* @param url

* @return

*/

public static Bitmap getLoacalBitmap(String url) {

     try {

          FileInputStream fis = new FileInputStream(url);

          return BitmapFactory.decodeStream(fis);

     } catch (FileNotFoundException e) {

          e.printStackTrace();

          return null;

     }

}

/**

* 从服务器取图片

* @param url

* @return

*/

public static Bitmap getHttpBitmap(String url) {

     URL myFileUrl = null;

     Bitmap bitmap = null;

     try {

          Log.d(TAG, url);

          myFileUrl = new URL(url);

     } catch (MalformedURLException e) {

          e.printStackTrace();

     }

     try {

          HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();

          conn.setConnectTimeout(0);

          conn.setDoInput(true);

          conn.connect();

          InputStream is = conn.getInputStream();

          bitmap = BitmapFactory.decodeStream(is);

          is.close();

     } catch (IOException e) {

          e.printStackTrace();

     }

     return bitmap;

}