Refer this doc over HttpsUrlConnection.
To create key and import certificate use Portecle tool.
To create key using Keytool, follow the doc.
String query = "emailId=" + URLEncoder.encode("xxx@gmail.com", HTTP.UTF_8) + "&pwd=" + URLEncoder.encode("password", HTTP.UTF_8);
HttpsURLConnection urlConnection = null;
try{
KeyStore keyStore = KeyStore.getInstance("BKS");
InputStream in =
getResources().openRawResource(R.raw.keystore);
keyStore.load(in, "password".toCharArray());
TrustManagerFactory tmf =
TrustManagerFactory.getInstance("X509");
tmf.init(keyStore);
SSLContext context = SSLContext.getInstance("TLS");
context.init(null, tmf.getTrustManagers(), null);
System.setProperty("http.keepAlive", "false");
URL url = new URL("https://www.google.co.in/");
urlConnection = (HttpsURLConnection) url.openConnection();
urlConnection.setSSLSocketFactory(context.getSocketFactory());
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.setRequestMethod("POST");
urlConnection.setRequestProperty("content-type",
"application/x-www-form-urlencoded");
urlConnection.setRequestProperty("Content-length", "" + query.getBytes().length);
//To post data...
DataOutputStream output = new DataOutputStream( urlConnection.getOutputStream() );
output.writeBytes( query );
output.flush();
output.close();
InputStream stream = null;
if ( urlConnection.getResponseCode() == 201 )
stream = urlConnection.getInputStream();
else
//Report error...
urlConnection.disconnect();
}catch(Exception e){
urlConnection.disconnect();
}