Android Interview Questions and Answers
Android is a most popular mobile operating system which is not only used in mobile phone but on TV, cars, and smartwatches as well. Speaking of mobile phones, the primary function of android is to give the command to mobile applications to do the task. It’s like if you want to dial a number than android indicates Mobile to dial it. These Android Interview Questions are specially curated highly experienced industry professionals to help candidates in their future job success.
Advantages of Android
- Multitasking is one of the main benefits of Android. You could listen to songs along with an Internet browsering on Android.
- Access to hundreds of thousands of applications. You want to learn cooking, find the cooking app and start your learning.
- An android user has many options for phones, and it's branding, which is available in the different price range. So, there is a variety of choices with Android.
Most Frequently Asked Android Interview Questions
Android Debug Bridge is the full form of ADB. ADB could control sharing of files along with cut & copy function of any PC from your system with the help of a USB.
ANR stands for Application Not Responding. This pop-up comes when any application gets extra load , due to which it becomes unresponsive to open.
Nougat, Marshmallow, Lollipop, KitKat, Jelly Bean, Ice Cream, Sandwitch & Honeycomb are the few of the last codes used for android versions .
Intent is sort of Instruction or information which is given to the components. Such as opening of any game, online page , send email & so on. Intent is further divided into 2 parts, which are Implicit & Explicit Intent.
Data could be moved from one activity to another with the help of bundles.
To know the coding, refer below :
Bundle b=new Bundle();
b.putString(“Email”, “[email protected]”);
i.putExtras(b); //where I is intent
An Android Virtual Device is a device configuration that is run with the Android emulator. Android virtual device is used to test an application without any mobile or a tablet. It works on Android Emulator which gives a virtual device facilities. It gives the platform to install & run the application in order to test it.
An android toast is a form of message, which reflect for a user in terms of feedback. This message reflect for a very short time & goes away automatically.
Toast.makeText(getApplicationContext(),"Best Interview Questions",Toast.LENGTH_SHORT).show();
ANR stands for Application not responding . This dialogue box appears when any application is no longer working .
Key components of android includes view, intent, service, activity, fragment, content provider & android virtual device.
<manifest></manifest>
<application></application>
<activity android:name="”.MyIntellipaat”"> </activity>
Android is one of the most popular mobile platform today in the world. App. developer just needs to create and register his app on android platform. After this, any android user from across the globe could download and install his application. By just having presence on android platform, an app. developer gets huge market of ready customers.
<set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator=”false”>
<translate android:fromXDelta=”-100%”
android:toXDelta=”0%”
android:fromYDelta=”0%”
android:toYDelta=”0%”
android:duration=”700"/>
</set>
A service in Android is a component which runs in the background even when the application is demolished.
It is a batch file and shell script which was used to create a new Android project. It is now replaced with "Create New Project" in Android SDK.
- onCreate()
- onStart()
- onResume()
- onPause()
- onStop()
- onRestart()
- onDestroy()
A unique Linux ID is assigned to each application in android and it is used for the tracking of a process.
It has following application components architecture.
- Services
- Intent
- Resource Externalization
- Notification
- Content Providers
Adb stands for Android Debug Bridge. It helps developers the power to execute remote shell commands. It's basic function is to allow and control communication towards and from the emulator port.