试试这个 -
URLBitmapField wmf= new util.URLBitmapField("http://www.asianmirror.lk/english/images/stories/demo/hot_news/top_news/sanga1_latest.jpg")add(wmf);// URLBitmapField类在下面给出-
public class URLBitmapField extends BitmapField implements URLDataCallback {EnpredImage result=null ;public static Bitmap myImage;public static EnpredImage _enpred_img=null ;int _imgWidth = 140;int _imgHeight = 140;int _imgMargin = 10;public URLBitmapField(String url) { try { http_image_data_extrator.getWebData(url, this); } catch (Exception e) {}}public Bitmap getBitmap() { if (_enpred_img == null) return null; return _enpred_img.getBitmap();}public void callback(final String data) { if (data.startsWith("Exception")) return; try { byte[] dataArray = data.getBytes(); //bitmap = EnpredImage.createEnpredImage(dataArray, 0, dataArray.length);//no scale _enpred_img = EnpredImage.createEnpredImage(dataArray, 0, dataArray.length); // with scale _enpred_img = sizeImage(_enpred_img, _imgWidth, _imgHeight); constants.image=_enpred_img; //myImage=cropImage(_enpred_img.getBitmap()); setImage(_enpred_img); UiApplication.getUiApplication().getActiveScreen().invalidate(); } catch (final Exception e){}}public EnpredImage sizeImage(EnpredImage image, int width, int height) { int currentWidthFixed32 = Fixed32.toFP(image.getWidth()); int currentHeightFixed32 = Fixed32.toFP(image.getHeight()); int requiredWidthFixed32 = Fixed32.toFP(width); int requiredHeightFixed32 = Fixed32.toFP(height); int scaleXFixed32 = Fixed32.div(currentWidthFixed32, requiredWidthFixed32); int scaleYFixed32 = Fixed32.div(currentHeightFixed32, requiredHeightFixed32); result = image.scaleImage32(scaleXFixed32, scaleYFixed32); return result;}public class http_image_data_extrator { static String url_=""; static StringBuffer rawResponse=null; //static String result = null; public static void getWebData(String url, final URLDataCallback callback) throws IOException { //url_=url; HttpConnection connection = null; InputStream inputStream = null; try { if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) && RadioInfo .areWAFsSupported(RadioInfo.WAF_WLAN)) { url += ";interface=wifi"; } connection = (HttpConnection) Connector.open(url, Connector.READ, true); String location=connection.getHeaderField("location"); if(location!=null){ if ((WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) && RadioInfo .areWAFsSupported(RadioInfo.WAF_WLAN)) { location += ";interface=wifi"; } connection = (HttpConnection) Connector.open(location, Connector.READ, true); }else{ connection = (HttpConnection) Connector.open(url, Connector.READ, true);} inputStream = connection.openInputStream();byte[] responseData = new byte[10000];int length = 0;rawResponse = new StringBuffer();while (-1 != (length = inputStream.read(responseData))) { rawResponse.append(new String(responseData, 0, length));}int responseCode = connection.getResponseCode();if (responseCode != HttpConnection.HTTP_OK){ throw new IOException("HTTP response pre: "+ responseCode);} final String result = rawResponse.toString(); UiApplication.getUiApplication().invokeAndWait(new Runnable() { public void run(){ callback.callback(result); }}); } catch (final Exception ex) {UiApplication.getUiApplication().invokeLater(new Runnable() { public void run() { callback.callback("Exception (" + ex.getClass() + "): " + ex.getMessage()); }}); } }}public interface URLDataCallback { public void callback(String data);}
