Develop Reference

PHP Post Android Post

I want to make a post from my android application and insert into my database. My first approach was to send a post from my application and just show the value but it did not work.
My code from the application is
public void postData() {
HttpClient Client = new DefaultHttpClient();
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("regid", "sID"));
nameValuePairs.add(new BasicNameValuePair("etc", "sETC"));
try {
String SetServerString = "";
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://your-url.com/script.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
ResponseHandler<String> responseHandler = new BasicResponseHandler();
SetServerString = httpclient.execute(httppost, responseHandler);
} catch(Exception ex) {
// failed
}
}
The php code is
<?php
include 'db.inc.php';
$device_token = urldecode($_POST['regid']);
echo $device_token;
?>

Replace your lines
ResponseHandler<String> responseHandler = new BasicResponseHandler();
SetServerString = httpclient.execute(httppost, responseHandler);
By
HttpResponse response = httpclient.execute(httppost);
You can check response in android side using
String responseStr = EntityUtils.toString(response.getEntity());
System.out.println(responseStr);
Use following PHP code to get values.
<?php
$value1 = $_POST["regid"];
$value2 = $_POST["etc"];
echo $value1;
?>

Android sending data to restful webservices

I am trying to send data from android smartphone to a restful webservice made in java using jersey library.
I saw the following answer on how to do it:
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
Although this seems about right i have a doubt in the nameValuePairs variable.
Particularly in this part:
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
If i have a webservice that has the following signature:
#POST
#Path("/post/location")
#Consumes(MediaType.APPLICATION_JSON)
public Response createLocation(Loc location)
what would be the "id" part in the nameValuePairs variable, it would be location or Loc?.

try this
//
String url = 'url_to_you_server_api.dev/postservice'
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(url);
JSONObject params = new JSONObject();
params.put("id","id");
params.put("hi","hi");
StringEntity jsonEntity = new StringEntity( params.toString() );
HttpPost request = new HttpPost(url);
request.addHeader("Content-Type","application/json");
request.setEntity(jsonEntity);
response = client.execute(request);
if you service receive a entity it might be a json or something not just key-value params that correspond to form-data.

Create a json string with List<NameValuePair> in android

I want to send a http request to a url with Android.
I am an iOS developer and now trying to learn Android.
I used to send the JSON string in iOS like below
{"function":"login", "parameters": {"username": "nithin""password": "123456"}}
How can I send this in Android?
I tried List<NameValuePair> but can't find the proper solution.
Full code of what I tried -
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("function", "login"));
nameValuePairs.add(new BasicNameValuePair("username", "nithin"));
nameValuePairs.add(new BasicNameValuePair("password", "123456"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}

I think JsonStringer is easy and useful for you here..
Try this:
HttpPost request = new HttpPost(URL);
request.setHeader("Accept", "application/json");
request.setHeader("Content-type", "application/json");
JSONStringer vm;
try {
vm = new JSONStringer().object().key("function")
.value(login).key("parameters").object()
.key("username")
.value(nithin).key("password").value("123456")
.endObject().endObject();
StringEntity entity = new StringEntity(vm.toString());
request.setEntity(entity);
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(request);

Sending a http post request is not working

I'm making an android app and run it on the simulator. All post parameters on the server are empty when I send a http post request. This is code in the android app:
public void run() {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(page);
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
InputStreamReader inreader = new InputStreamReader(response.getEntity().getContent());
BufferedReader reader = new BufferedReader(inreader);
String line = "";
while((line = reader.readLine()) != null){
System.out.println(line);
}
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
}
And this is the code on the server:
<?php
print_r($_POST);
?>
It returns an empty php array when I run it on the simulator.

Put www in the request url and it was solved. There was a htaccess file that corrected all url`s without www.

Volley Library(sim-official from google) is better, http, https etc.
https://developers.google.com/live/shows/474338138
There's a very mini sample here:https://github.com/ogrebgr/android_volley_examples/blob/master/src/com/github/volley_examples/Act_SimpleRequest.java
There's the same question like you here: Optimizing HTTP requests in android

Android post request

I have javascript code that i am trying to mimic in an android application:
Here is the javascript code:
text = '{"username":"Hello","password":"World"}';
x.open("POST", url);
x.setRequestHeader("Content-type", "application/json");
x.setRequestHeader("Content-length", text.length);
x.send(text);
and here is what i have so far for the android application(doesnt work):
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setHeader("Content-type", "application/json");
String text = "\"{\"username\":\"Hello\",\"password\":\"World\"}\"";
httppost.setHeader("Content-length",Integer.toString(text.length()));
httppost.setEntity(new StringEntity(text));
HttpResponse response = httpclient.execute(httppost);
when i try to debug this code on eclipse the emulater keeps running while the debugger hangs. Thanks!
Note: its hanging on httpclient.execute(httppost)

Here is the code I use for Android post requests:
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("fullurl");
List<NameValuePair> pairs = new ArrayList<NameValuePair>();
pairs.add(new BasicNameValuePair("parameter", "variable");
post.setEntity (new UrlEncodedFormEntity(pairs));
HttpResponse response = client.execute(post);
...and so on.

Try it out:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
JSONObject json = new JSONObject();
try{
json.put("username", "Hello");
json.put("password", "World");
StringEntity se = new StringEntity(json.toString());
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
post.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
/*Checking response */
if(response!=null){
InputStream in = response.getEntity().getContent(); //Get the data in the entity
}
catch(Exception e){
e.printStackTrace();
}

Did you mean to set your HttpPost path to just path. I think your hanging because you haven't given the HttpPost a valid URL. You'll need to modify this line:
HttpPost httppost = new HttpPost("path");
to something like
HttpPost httppost = new HttpPost("actual/url/path");

You have extra speech marks within the start and end of your text string compared to the JS version?

// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(StringUrl);
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
System.out.println("rep => " + response);
} catch (IOException e) {
System.out.println(e);
}
}