Java tutorial
//package com.java2s; import android.app.Activity; import android.content.Intent; import android.net.Uri; public class Main { public static void call(Activity activity, String mobile) { try { Intent callIntent = new Intent(Intent.ACTION_CALL); callIntent.setData(Uri.parse("tel:" + mobile)); activity.startActivity(callIntent); } catch (Exception e) { e.printStackTrace(); } } }