Develop Reference

Create this string exactly in Android

I want to build 2 same products for Android and iOs.
The iOs already works, but the android doesnt, that's because of the format of the string.
in iOs this is:
NSString*jsonString = [[NSString alloc] initWithFormat:#"{\"id\":\"%#\",\"longitude\":\"%#\",\"latitude\":\"%#\",\"timestamp\":\"%#\"}", _phonenumber, longitude , latitude, stringFromDate];
And i dont know how to do this exactely like this in android. The format here is different.
What i have now is:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.myserver.nl/locatie.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
nameValuePairs.add(new BasicNameValuePair("id", num));
nameValuePairs.add(new BasicNameValuePair("longitude", longi));
nameValuePairs.add(new BasicNameValuePair("latitude", lat));
nameValuePairs.add(new BasicNameValuePair("timestamp", time));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
Thanks in advance, i need this by the end of the week so if you could help me, that would be greatly appreciated
i get this as an result from the iOs string:
{
"id":"0612833398",
"longitude":"-143.406417",
"latitude":"32.785834",
"timestamp":"10-10 07:56"
}
Okay, this is what my problem is.
Yes i need to send this exact string to an asp.net file on a server. But i need to know how to combine this with this: with the http post to
HttpPost httppost = new HttpPost("http://www.myserver.nl/locatie.php");
before i combined this with the nameValuePPairs like this
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

Create same string as you are getting in IOS by create an JosnObject as:
JSONObject json = new JSONObject();
json.put("id", "0612833398");
json.put("longitude", "-143.406417");
json.put("latitude", "32.785834");
json.put("timestamp", "10-10 07:56");
now if you make a print for json object you will get this string :
{"id":"0612833398","longitude":"-143.406417","latitude":"32.785834",
"timestamp":"10-10 07:56"}
and Post JSONObject as to server :
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.myserver.nl/locatie.php");
httppost.setHeader("Content-type", "application/json");
// Create json object here...
JSONObject json = new JSONObject();
json.put("id", "0612833398");
json.put("longitude", "-143.406417");
json.put("latitude", "32.785834");
json.put("timestamp", "10-10 07:56");
/// create StringEntity with current json obejct
StringEntity se = new StringEntity(json.toString());
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
httppost.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
String temp = EntityUtils.toString(response.getEntity());
} catch (ClientProtocolException e) {
}

To create a String you can use String.format(). In this case the syntax is very similar to Objective-C:
String s = String.format("{\"id\":\"%s\",\"longitude\":\"%s\",\"latitude\":\"%s\",\"timestamp\":\"%s\"}", num, long, lat, time);
HTTP Post goes like this:
HttpPost postMethod = new HttpPost(url);
try {
HttpParams params = new BasicHttpParams();
params.setParameter(name, value);
postMethod.setParams(params);
httpClient.execute(postMethod);
} catch (Exception e) {
} finally {
postMethod.abort();
}

Android HTTP POST connection to file with response

How do I send the data to this PHP file below? I can establish the connection and send data, but can't receive the response. I need to send 3 parameters, the "op", Username and password.
switch ($_POST["op"]) {
// User Authentication.
case 1:
$UName = $_POST["UName"];
$UPass = $_POST["UPass"];
$UPass = md5($UPass);
//....Some code
// New user registration process.
case 2:
$UName = $_POST["UName"];
$UPass = $_POST["UPass"];
$UEmail = $_POST["UEmail"];
$UNick = $_POST["UNick"];
$UPass = md5($UPass);
//....Some code
}
My code so far:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://SomeUrl/login.php");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("1", "dan"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
response = httpclient.execute(httppost);
String responseBody = EntityUtils.toString(response.getEntity());
Log.d(TAG, ""+responseBody);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
What am I doing wrong?

Looking at your PHP code, at a bare minimum you need to specify an op parameter. Then depending on which op you're trying to carry out, make sure you specify the other needed parameters as well. For user authentication (op = 1):
nameValuePairs.add(new BasicNameValuePair("op", "1"));
nameValuePairs.add(new BasicNameValuePair("UName", "dan"));
nameValuePairs.add(new BasicNameValuePair("Pass", "somepass"));
On a side note, you should secure the PHP service with SSL, if you are using it to process sensitive user information.

Android HTTP POST should look like this:
HttpParams httpParams=new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 10000);
HttpConnectionParams.setSoTimeout(httpParams, 10000);
// Data to send
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("UName", "dan"));
nameValuePairs.add(new BasicNameValuePair("UPass", "password"));
nameValuePairs.add(new BasicNameValuePair("op", "1"));
//http post
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://SomeUrl/login.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs, "UTF-8"));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
}
In your PHP code I would strongly recommend to use mysql_real_escape_string($_POST['UName']) otherwise it is easy to attack via SQL injection.
I would also recommend to use either SSL connection (HTTPS) or to send the password only hashed (MD5)

Android: How to send song file to server throught HttpPost along with other variables

I am to send a song file to server through HttpPost. Currently I am using this code to send data to server
HttpPost postRequest = new HttpPost();
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("email", Splash.pref.getString("userEmail", "")));
nameValuePairs.add(new BasicNameValuePair("password", Splash.pref.getString("userPassword", "")));
nameValuePairs.add(new BasicNameValuePair("name", etName.getText().toString()));
nameValuePairs.add(new BasicNameValuePair("title", ttfSongTitle.getText().toString()));
postRequest.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// construct a URI objectedsta
postRequest.setURI(new URI(serviceURL));
} catch (URISyntaxException e) {
Log.e("URISyntaxException", e.toString());
}
But to send song file to server I have find this code on net but having problems to integrate these both.
String url = "http://yourserver";
File file = new File(Environment.getExternalStorageDirectory(),
"yourfile");
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
InputStreamEntity reqEntity = new InputStreamEntity(
new FileInputStream(file), -1);
reqEntity.setContentType("binary/octet-stream");
reqEntity.setChunked(true); // Send in multiple parts if needed
httppost.setEntity(reqEntity);
HttpResponse response = httpclient.execute(httppost);
//Do something with response...
} catch (Exception e) {
// show error
}
Please help me so that I could integrate these both or some other solution, so that I could send Music file to server along with other authentication data.
I am sending data to server through secure restful service.
thanks.

Android HTTPRequest Cycle

I am trying to send JSON to my server and retrieve a JSON in return as a result.
Like sending in username and password and getting back token and other content.
This is what i am doing for the HTTP Request for sending. How do i now retrieve back the content in the same request ?
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost("http://192.168.1.5/temp/test.php");
List<NameValuePair> value = new ArrayList<NameValuePair>();
value.add(new BasicNameValuePair("Name", jsonStr));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(value);
request.setEntity(entity);
HttpResponse res = client.execute(request);
String[] status_String=res.getStatusLine().toString().trim().split(" ");
//String hd=res.getFirstHeader("result").toString();
//System.out.println("Res=" + res);
Log.e("tag", ""+res.toString());
if(status_String[1].equals("200")){
isDataSent=true;

Let me add more in vvieux's answer:
res.getEntity().getContent()
will return you InputStream.

String returnData = EntityUtils.toString(res.getEntity());

You can use the HttpEntity
res.getEntity().getContent()

How to update the data through XML file on server

I am parsing the data from an XML file and storing it in database. Now i want to update the data through an XML file, I have an url for updating the data but i am not getting the way to send the data on that url..
pls help.

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
nameValuePairs.add(new BasicNameValuePair("latitude", "00.11"));
nameValuePairs.add(new BasicNameValuePair("longitude", "00.11"));
String url = "http://10.15.66.101:8080/LocationServer/GetLocation";
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(
url);
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpClient.execute(httpPost);
BusinessManager.getHandler().getLoggerUtilityObj().printMsg(
"Posting data to server");
// This is done to shutdown the previously open http connection
httpClient.getConnectionManager().shutdown();