Al obtener una imagen de la URL de su java.net.UnknownHostException: Host no está resuelto en el dispositivo Android?

public class FetchImageAppsActivity extends Activity { /** Called when the activity is first created. */ public static String urlPath = "http://farm1.static.flickr.com/150/399390737_7a3d508730_b.jpg"; public ImageView imageView; boolean usingProxy=true; public String proxyIP="ABCD"; public int proxyPort=80; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); imageView =(ImageView) findViewById(R.id.imageViewFetch); if(usingProxy==true){ setProxy(); } try { fetch(urlPath); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } Drawable image = ImageOperations(this,urlPath,"overflow.png"); imageView.setImageDrawable(image); /* imageView.setMinimumWidth(); imageView.setMinimumHeight(height); imageView.setMaxWidth(width); imageView.setMaxHeight(height); */ } private Drawable ImageOperations(Context ctx, String url, String saveFilename) { try { InputStream is = (InputStream) ((FetchImageAppsActivity) ctx).fetch(url); //error line Drawable d = Drawable.createFromStream(is, "src"); return d; } catch (MalformedURLException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } } public Object fetch(String address) throws MalformedURLException,IOException { try{ URL url = new URL(address); URI uri = new URI(url.getProtocol(), url.getUserInfo(), url.getHost(), url.getPort(), url.getPath(), url.getQuery(), url.getRef()); url = uri.toURL(); Log.i("Url:", url+""); Object content = url.getContent(); return content; }catch(Exception e){ e.printStackTrace(); } return null; } public void setProxy() { Uri uri = Uri.parse("http://farm1.static.flickr.com/150/399390737_7a3d508730_b.jpg"); Properties systemProperties = System.getProperties(); systemProperties.put( "proxySet", "true" ); systemProperties.setProperty("http.proxyHost",proxyIP); systemProperties.setProperty("http.proxyPort","80"); systemProperties.setProperty("http.nonProxyHosts",uri.getHost()); //uri.getHost() HttpHost PROXY_HOST=null; if( usingProxy == true) PROXY_HOST = new HttpHost(proxyIP, proxyPort); HttpClient client = null; File f = null; List<BasicNameValuePair> nameValuePairs = new ArrayList<BasicNameValuePair>(2); HttpParams params = new BasicHttpParams(); params.setParameter(ExecutionContext.HTTP_TARGET_HOST, PROXY_HOST); params.setBooleanParameter("http.protocol.expect-continue", false); ConnManagerParams.setMaxConnectionsPerRoute(params, new ConnPerRouteBean(1)); ConnManagerParams.setMaxTotalConnections(params, 1); HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1); HttpProtocolParams.setUseExpectContinue(params, false); HttpProtocolParams.setContentCharset(params,HTTP.DEFAULT_CONTENT_CHARSET); HttpConnectionParams.setConnectionTimeout(params,50000); HttpConnectionParams.setSoTimeout(params, 10000); SchemeRegistry registry = new SchemeRegistry(); registry.register(new Scheme("https", PlainSocketFactory.getSocketFactory(),443)); //if (data != null && data.equals("data")) { registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(),proxyPort)); //uri.getPort() // } else { registry.register(new Scheme("https", PlainSocketFactory.getSocketFactory(), proxyPort)); // } ThreadSafeClientConnManager cm = new ThreadSafeClientConnManager(params, registry); client = new DefaultHttpClient(cm, params); //Proxy.NO_PROXY if(usingProxy == true) client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, PROXY_HOST); HttpContext ctx = new BasicHttpContext(); ctx.setAttribute(ExecutionContext.HTTP_TARGET_HOST, PROXY_HOST); try { HttpPost request = new HttpPost(); request.setParams(params); request.setURI(new URI(uri.toString())); request.setHeader("Content-Type","application/x-www-form-urlencoded"); }catch(Exception e){ System.out.println(e.getMessage()); } } }

Conseguí la excepción mientras que funcionaba en el emulador androide y mi máquina está conectada al ranurador WiFi permitido proxy como folllows

 java.net.UnknownHostException: Host is unresolved: farm1.static.flickr.com:80

Registro de errores:

 09-05 13:44:48.817: WARN/System.err(489): java.net.UnknownHostException: Host is unresolved: farm1.static.flickr.com:80 09-05 13:44:48.839: WARN/System.err(489): at java.net.Socket.connect(Socket.java:1038) 09-05 13:44:48.847: WARN/System.err(489): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:62) 09-05 13:44:48.884: WARN/System.err(489): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:88) 09-05 13:44:48.886: WARN/System.err(489): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHTTPConnection(HttpURLConnectionImpl.java:927) 09-05 13:44:48.897: WARN/System.err(489): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:909) 09-05 13:44:48.937: WARN/System.err(489): at java.net.URLConnection.getContent(URLConnection.java:157) 09-05 13:44:48.937: WARN/System.err(489): at java.net.URL.getContent(URL.java:621) 09-05 13:44:48.967: WARN/System.err(489): at com.android.fetchimage.FetchImageAppsActivity.fetch(FetchImageAppsActivity.java:96) 09-05 13:44:48.967: WARN/System.err(489): at com.android.fetchimage.FetchImageAppsActivity.onCreate(FetchImageAppsActivity.java:62) 09-05 13:44:48.987: WARN/System.err(489): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 09-05 13:44:48.987: WARN/System.err(489): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 09-05 13:44:48.987: WARN/System.err(489): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 09-05 13:44:48.987: WARN/System.err(489): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 09-05 13:44:48.987: WARN/System.err(489): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 09-05 13:44:48.987: WARN/System.err(489): at android.os.Handler.dispatchMessage(Handler.java:99) 09-05 13:44:48.987: WARN/System.err(489): at android.os.Looper.loop(Looper.java:123) 09-05 13:44:48.987: WARN/System.err(489): at android.app.ActivityThread.main(ActivityThread.java:4627) 09-05 13:44:49.028: WARN/System.err(489): at java.lang.reflect.Method.invokeNative(Native Method) 09-05 13:44:49.028: WARN/System.err(489): at java.lang.reflect.Method.invoke(Method.java:521) 09-05 13:44:49.028: WARN/System.err(489): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 09-05 13:44:49.047: WARN/System.err(489): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 09-05 13:44:49.067: WARN/System.err(489): at dalvik.system.NativeStart.main(Native Method)

Establecer el permiso de Android para Internet en el archivo Manifest.xml

android.permission.INTERNET

Pruebe el mismo código sin establecer la propiedad systemProperties.setProperty("http.proxyPort","80"); .

Tengo la solución:

String url = "farm1.static.flickr.com/150/399390737_7a3d508730_b.jpg"; proxy = "yourProxyIP", port = "yourProxyPort"; URL server = new URL(url); Properties systemProperties = System.getProperties(); systemProperties.setProperty("http.proxyHost",proxy); systemProperties.setProperty("http.proxyPort",port); HttpURLConnection connection = (HttpURLConnection)server.openConnection(); connection.connect(); InputStream in = connection.getInputStream(); image = Drawable.createFromStream(in, "src"); imageView.setImageDrawable(image);

Para usar "https", use la autenticación SSL