Library for Android httpPost - android-studio

Question

It's kinda frustating me... I tried to create httpPost
code :
private void makePostRequest() {
HttpClient httpClient = new DefaultHttpClient();
// replace with your url
HttpPost httpPost = new HttpPost("www.example.com");
//Post Data
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
nameValuePair.add(new BasicNameValuePair("username", "test_user"));
nameValuePair.add(new BasicNameValuePair("password", "123456789"));
//Encoding POST data
try {
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
} catch (UnsupportedEncodingException e) {
// log exception
e.printStackTrace();
}
//making POST request.
try {
HttpResponse response = httpClient.execute(httpPost);
// write response to log
Log.d("Http Post Response:", response.toString());
} catch (ClientProtocolException e) {
// Log exception
e.printStackTrace();
} catch (IOException e) {
// Log exception
e.printStackTrace();
}
}
But always ended Can't resolve symbol. I used Android Studio latest update, I already downloaded http://mirror.metrocast.net/apache//httpcomponents/httpclient/binary/httpcomponents-client-4.5-bin.zip from hc.apache.org and copy jar file (httpclient-4.5.jar and httpcore-4.4.1.jar) to library and add it as a library but somehow it doesn't work.
It gives error :
Error:Execution failed for task ':app:packageDebug'.
Duplicate files copied in APK META-INF/DEPENDENCIES File 1: Z:\Learning\Android-2\Live-code-AS\SendLocation\app\libs\httpcore-4.4.1.jar
File 2:
Z:\Learning\Android-2\Live-code-AS\SendLocation\app\libs\httpclient-4.5.jar
if I delete one of the jar file then I'll get "can't resolve HttpClient or NameValuePair"
Please help.... Thanks before.

Answer 1

You have some duplicate files in your dependencies. To solve it, open your build.gradle in which you define your dependencies and add the packagingOptions-section within the android-section:
android {
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
}
}