<Buttonandroid:id="@+id/send"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="SendSMS"android:onClick="onClick"/>

publicvoidonClick(Viewview){sendSMS("5556","Hello...");Toast.makeText(this,"hello",Toast.LENGTH_SHORT).show();}privatevoidsendSMS(Strings,Strings1){SmsManagersmsManager=SmsManager.getDefault();smsManager.sendTextMessage(s,null,s1,null,null);}