It provides visual structure and interactive elements that are familiar to users 

This Event Listener executes when user performs a touch event within item bounds 

are messages that are display outside of the applications normal interface

This Event Listener executes when user touches or focuses on any item for one to two seconds 

It is used only by the system and is unknown to the app and it is assigned by the system by default 

This activity is in the foreground of the screen and has user focus. 

These allow users to change a setting between 2 states 

It happens between the call to onStart() and the call to onStop() 

This is a component of an application that provides a single screen with user interface. 

These allow the user to choose one or more options from a set number of choices 

It stores the device's user data and the emulated SD card 

This Event Listener executes when an item is on focus and a hardware key on the device is pressed or released 

This Event Handler executes when user touches or focuses on any item, such as buttons, images, etc. 

It is basically the face of a program or application 

It is one of the benefits of the mobile application that focus on a user that can change the settings of the mobile app 

It is another activity in the foreground and has focus but is still visible

It enables a user to enter text 

It is a component that responds to system-wide broadcast announcements 

It is considered a modular section of an activity that has its own life cycle and recieves its own input events 

It is developed by Microsoft Corporation 

This Event Handler executes when an item is on focus and a hardware key on the device is pressed or released 

This Event Handler executes when user touches or focuses on any item for one to two seconds 

It is one of the benefits of the mobile application that focus on the users that can write, read and present their reports using only the mobile phones 

It defines the hardware feature of the virtual device 

It Contains all the contents of an Android app 

t is a component that runs in the background to perform long-running operations 

It is a virtual mobile device that runs on the computer. 

It defines the version of the Android platform that will run on the virtual device 

It draws something on the screen that the user can interact with 

It happens between the call to onCreate() and the call to onDestroy() 

It is one of the benefits of the mobile application that focus on the mobile app user that can access and share information anytime or anywhere 

It is involved in the life cycle of an activity 

It contains a text, icon, or both Buttons 

This Event Listener executes when user touches or focuses on any item, such as buttons, images, etc. 

t Happens between the onResume() and the call to onPause()

These allow the user to select only one option for a set of choices 

This Event Handler executes when user navigates onto or away from an item 

It is called when creating the fragments, it is the essential components of the fragment that need to be retained

It is a small window that prompts the user to make a decision or enter additional information 

It is created by Google, and it is one of the most installed mobile OS for mobile devices. 

It is one of the benefits of the mobile application that focus on the modern users input and goes beyond clicking and typing 

This activity is in the background and is no longer available to the user. 

It is a tool in Android Studio that creates and manages AVDs 

It is an operating system built exclusively for mobiles such as smartphones, tables, PDA, etc. 

It represents a single screen with a user interface 

This Event Listener executes when A context menu is being built as a result of a long click 

This Event Listener executes when user navigates onto or away from an item