Calling REST Web Services with Android.

Public on June 1, 2011
Requesting REST web service:   you request REST web services by calling a URL with the parameters. like this
http://example.com/resources/getitems

an example of calling a REST web service:
String callWebErvice(String serviceURL){
// http get client
HttpClient client=new DefaultHttpClient();
HttpGet getRequest=new HttpGet();

try {
// construct a URI object
getRequest.setURI(new URI(serviceURL));
} catch (URISyntaxException e) {
Log.e("URISyntaxException", e.toString());
}

// buffer reader to read the response
BufferedReader in=null;
// the service response
HttpResponse response=null;
try {
// execute the request
response = client.execute(getRequest);
} catch (ClientProtocolException e) {
Log.e("ClientProtocolException", e.toString());
} catch (IOException e) {
Log.e("IO exception", e.toString());
}
try {
in=new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
} catch (IllegalStateException e) {
Log.e("IllegalStateException", e.toString());
} catch (IOException e) {
Log.e("IO exception", e.toString());
}
StringBuffer buff=new StringBuffer("");
String line="";
try {
while((line=in.readLine())!=null)
{
buff.append(line);
}
} catch (IOException e) {
Log.e("IO exception", e.toString());
return e.getMessage();
}


try {
in.close();
} catch (IOException e) {
Log.e("IO exception", e.toString());
}
// response, need to be parsed
return buff.toString();
}




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