Android Online Training

1.What is Android?

It is an open-sourced operating system that's used totally on

mobile devices, like cell phones and tablets. It’s a UNIX operating

system kernel-based system that’s been equipped with made parts

that permits developers to make and run apps which will perform

each basic and advanced functions.

For Free Demo Ph:+1 (646) 880-9474For Details : Folkstrain.com


2.Define Android Architecture?Android Architecture is formed of four key components:

UNIX operating system Kernel

Libraries

Android Framework

Android Applications


3.Define AAPT? AAPT is brief for Android asset Packaging Tool. This tool provides

developers with the power to affect zip-compatible archives, which

incorporates making, extracting still as viewing its contents.


4.Describe Activities?. Activities are unit what you ask because the window to a computer

programmer. Even as you produce windows so as to show output or

to kindle associate degree input within the variety of dialog boxes,

activities play constant role, thought it may not invariably be within

the variety of a user interface.


5.What are Intents?

Intents displays notification messages to the user from inside the

Android enabled device. It will be wont to alert the user of a specific

state that occurred. Users will be created to retort to intents.


6.What things area necessary in each Android project?These are unit the essential things that are present every time an

Android project is created:

– AndroidManifest.xml

– build.xml

– bin/

– src/

– res/

– assets/ .


7.Explain containers? Containers, because the name itself implies, holds objects

and widgets along, betting on that specific things area unit

required and in what explicit arrangement that's needed.

Containers could hold labels, fields, buttons, or maybe kid

containers, as examples.


8.What is Orientation? Orientation, which might be set using setOrientation (), dictates if

the Linear Layout is delineated as a row or as a column. Values area

unit set as either HORIZONTAL or VERTICAL.


9.What area unit the four essential states of an activity?– Active – if the activity is at the foreground

– Paused – if the activity is at the background and still visible

– Stopped – if the activity isn't visible and so is hidden or obscured

by another activity

– Destroyed – once the activity method is killed or completed

terminated.


10.Define ANR? ANR is brief for Application Not Responding. this is often really a

dialog that seems to the user whenever application are

unresponsive for an extended amount of your time.


11What is ADP? Adb is brief for Android Debug Bridge. It permits developers the

ability to execute remote shell commands. Its basic perform is to

permit and management communication towards and from the

somebody port.


12.When Does ANR occur?The ANR dialog is exhibited to the user supported 2 potential

conditions. One is once there's no response to an input event inside

five seconds, and also the different is once a broadcast receiver isn't

done executing within ten seconds.

Android Online Training

Education

Transcript of Android Online Training