nostra13/Android-Universal-Image-Loader — Issue #11: Http connection work improvements
Author: nostra13
Created: 2011-12-13 18:59:06+00:00
State: open

May be this code will be useful:

``` java
public static void setClient() {
HttpParams params = new BasicHttpParams();
// Turn off stale checking. Our connections break all the time anyway,
// and it's not worth it to pay the penalty of checking every time.
HttpConnectionParams.setStaleCheckingEnabled(params, false);
// Default connection and socket timeout of 10 seconds. Tweak to taste.
HttpConnectionParams.setConnectionTimeout(params, 10 * 1000);
HttpConnectionParams.setSoTimeout(params, 10 * 1000);
HttpConnectionParams.setSocketBufferSize(params, 8192);

// Don't handle redirects -- return them to the caller. Our code
// often wants to re-POST after a redirect, which we must do ourselves.
HttpClientParams.setRedirecting(params, false);
// Set the specified user agent and register standard protocols.
HttpProtocolParams.setUserAgent(params, "bigbuzzy business");
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
schemeRegistry.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));

ClientConnectionManager manager = new ThreadSafeClientConnManager(params, schemeRegistry);

AndroidApplication.client = new DefaultHttpClient(manager, params);
}

//И загрузку через него (нет сети - берем из кеша иначе грузим):
public static String retrieve(String url, boolean cache) {
StringBuilder sb = new StringBuilder();
sb.append(AndroidApplication.DOMEN);
sb.append(url);
url = sb.toString();
Log.d("retrieve", url);
String md5 = Md5.md5(url);
File casheDir = AndroidApplication.cacheDir;//context.getCacheDir();

File f = null;
if (casheDir != null && cache) {
f = new File(casheDir, md5);
final long time = new Date().getTime() / 1000;
if (f.exists()) {
if ((f.lastModified() / 1000 + 600) > time) {
return readFile(f);
}
}
}

HttpGet getRequest = new HttpGet(url);

try {
HttpResponse getResponse = AndroidApplication.getClient().execute(getRequest);
final int statusCode = getResponse.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
Log.e("statusCode", statusCode + "");
}

HttpEntity getResponseEntity = getResponse.getEntity();

if (getResponseEntity != null && statusCode == HttpStatus.SC_OK) {
String s = EntityUtils.toString(getResponseEntity);
if (statusCode != HttpStatus.SC_OK && f != null) {
BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(f));
os.write(s.getBytes());
os.close();
}
return s;
}
} catch (IOException e) {
getRequest.abort();
if (f != null) {
if (f.exists()) {
return readFile(f);
}
}
Log.e("NetUtils error", e.toString());
}
return null;
}

public static String readFile(File file) {
String data = null;
try {
FileInputStream fis = null;
InputStreamReader isr = null;
fis = new FileInputStream(file);
isr = new InputStreamReader(fis);
char[] inputBuffer;
inputBuffer = new char[fis.available()];
isr.read(inputBuffer);
data = new String(inputBuffer);
isr.close();
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
return data;
}
```