Activity is important ui unit of android application. To start an activity from another, you have to use an intent by sending the new activity class as parameter. e.g. Intent i = new Intent(this, NewActivity.class); Next you call startActivity method startActivity(i); You can pass extra data to the new actiivity by using putExtra method. i.putExtra( "Title",mTitle); In the new activity, you can extract this information using getExtra methods Intent i = getIntent(); String t = i.getStringExtra("Title");