system with whatsapp

 Use this code in on button clicked with add source directry -

//NOTE : please use with country code first 2digits without plus signed 

try {

String mobile = "919999999999; String

//type your message in quotation

msg = "Your message"; startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://api.whatsapp.com/send?phone=" + mobile + "&text=" + msg))); }catch (Exception e){ //whatsapp app not install }

After this again put a add source directry with 

}

just like this

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