how to view documents in another activity on android code example

Example 1: android how to switch between activities

Intent intent = new Intent(getApplicationContext(), ActivityToBeOpened.class);
startActivity(intent);

Example 2: how to open activity in android studio

Intent intent = new Intent(this, DisplayMessageActivity.class);
        intent.putExtra(key:,value:);
        startActivity(intent);

Example 3: inline intent to jump new activity

startactivityIntent(new Intent(this, IntroSliderActivity.class));