An Android Client Library of Libvncserver . use it you can combine it into your program easily.
only support to
target 22you need a light them ex:theme="@android:style/Theme.Holo.Light"
Add it in your root build.gradle at the end of repositories:
	allprojects {
		repositories {
			...
			maven { url "http://jzaccone.github.io/SlidingMenu-aar" }
			maven { url 'https://jitpack.io' }
		}
	}
dependencies {
	        compile 'com.github.CodyyAndroid:LibVNCAndroid:v1.0.1'
	}
	<repositories>
		<repository>
		    <id>jitpack.io</id>
		    <url>https://jitpack.io</url>
		</repository>
	</repositories>
<dependency>
	    <groupId>com.github.CodyyAndroid</groupId>
	    <artifactId>LibVNCAndroid</artifactId>
	    <version>v1.0.1</version>
	</dependency>
 public void goVnc(View view){
        startActivity(new Intent(MainActivity.this , ActivityTabs.class));
    }
Copyright 2016 codyy 
Licensed under the GNU License
This program is free software; you can redistribute it and/or 
modify it under the terms of the GNU General Public License as 
published by the Free Software Foundation; either version 2 of the License, 
or (at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 
more details.    
You should have received a copy of the GNU General Public License along with 
this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.dfdf
