MobiTechReviewer

Defines the structure for an app's user interface

• layout

• Constraint Layout

• Context

• width

draws something the user can see and

interact with

• Context

• View

• Context

• Table

represents a single screen in the app where the user

can perform a single focused task such as sending an e-mail

• screen
• homepage
• activity

• dashboard

It is invoked when the app is launched for the

first time. It happens only once for the entire

life of the activity.

• onStart()

• onResume()

• onCreate()

• onPause()

t is invoked if the activity comes back after

being stopped. It is always followed by

onStart()

• onRestart()
• onStop()
• onPause()
• onDestroy()

It is invoked when the activity is no longer

visible to the user.

• onResume()
• onStop()
• onDestroy()
• onPause()

It is invoked before the activity starts

interacting with the user

• onCreate
• onPause
• onResume
• onStart

It is invoked when the activity is finishing

• onDestroy()

• onPause()

• onFinish()

• onStop()

It is invoked before the activity becomes

visible to the user

• onStart()
• onResume()
• onCreate()
• onPause()

It is invoked when the system is about to start

resuming another activity.

• onResume()

• onStop()

• onPause()

• onStart()