Android is an ideal and complete set of software that consists of the OS, middleware, and the most important mobile applications one looks for. As Android OS is open-source and by its strong compatibility, the OS works on various hardware suppliers like Samsung, OnePlus, Google Pixel, HTC, Sony, etc. So, the customers have wider choices to pick out a product based on the manufacturer they like. The cherry on the top is – Android products are cheaper compared to Apple\u2019s IOS.<\/p>\r\n
So, we know that it is a bit tough to crack interviews, although you have a good knowledge of this particular skill. To boost up the confidence levels in you, we strongly suggest you go through our predicted and reliable compilation of 101 Android Interview Questions<\/strong> which helps in polishing the basic knowledge much stronger.<\/p>\r\n\r\n Android is a package of software that mainly consists of an Operating System, along with the middleware and hundreds of needed applications. It is an open-source framework and relies upon Linux that helps in developing advanced and user-friendly applications. Android works on many hardware manufactured supplies such as OnePlus, Samsung, Sony, etc. This OS was developed by Google and supports various touch screen devices such as Tablets, Cell Phones, Televisions, etc.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n Have a look at the picture below, to understand the life cycle process easily.<\/p>\r\n\r\n The Android Architecture consists of a stack of prominent elements that are helpful to run a device. It is organized in layers.<\/p>\r\n The architecture is comprised of five levels, namely :<\/p>\r\n\r\n An activity is a screen with which the user interacts, precisely, a user interface such as a window or frame on which we can input data or we can get the output. The best examples are the pop-up windows, web pages, any interface with which you interact on the screen.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n APK is an abbreviation for \u2018Android Application Package\u2019 which is a kit in the file format used on the Android Operating system and on other OS distribution systems that support it. This file formatted package consists of the software code and media needed and is mainly used to install various supported files which can be games, applications, etc.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n The intent is a messaging element that passes the information from one application to the other by raising the requests. It displays the notification or pop-up important messages to the user from within the Android enabled device on the interface\/screen itself. It alerts the user about the happening of an event. If we think that all the components of an Android are isolated, the only way to arrange communication between them is through intents.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n There are two types of Intents in Android, namely :<\/p>\r\n\r\n Explicit Intent is an Intent where the application defines its specific target when its Intent to be raised. Here, the developer has control over which class should be launched.<\/p>\r\n Intent i = new Intent(this, 3rdQuestion.class);<\/em><\/p>\r\n startActivity(i)<\/em><\/p>\r\n Here, from the current page, the 3rdQuestion (defined target component) is going to be opened once the intent object is passed through the startActivity().<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n Implicit Intent is an Intent where the application doesn\u2019t <\/strong>define its target when its Intent to be raised. It is the work of the android operating system to filter out which component is going to give a response to the action.<\/p>\r\n Intent i = new Intent(this, Uri.parse(<\/em>https:\/\/www.fita.in\/<\/em><\/a>));<\/em><\/p>\r\n startActivity(i)<\/em><\/p>\r\n Here, from the current page, the https:\/\/www.fita.in\/<\/a> will be opened directly (as no inner component is specified) once the intent object is passed through the startActivity().<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n In Android, most of the functionalities are done with help on intended actions. An Action <\/strong>in Android technology is nothing but the thing the user wants to do with the applications in android or what he expects to get as a response when the intents are raised. Simply, the changes expected to be done on the screen of the interface when the intents are raised. The above are the commonly asked Android Interview Questions for Freshers and Experienced <\/strong>candidates in an Android Interview.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n ADB is an abbreviation that stands for \u2018Android Debug Bridge\u2019, which is a command-line tool that allows the developers the power to perform and execute the remote shell commands. This tool helps in communicating with and controls Android devices and computers or other supportive devices connect over a USB port. Simply, Allowing and controlling the communication exchange towards and from the emulator ports is its basic function.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n ANR is an abbreviation that stands for \u2018Application Not Responding\u2019. It is a dialog or message box that gives an alert message about the unresponsiveness of an application, whenever the application takes a long time to respond for intent or action.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n ANR is a dialog box that informs the user about the unresponsiveness of an application. There are two possible conditions where ANR dialog is expected to be displayed.<\/p>\r\n\r\n It is better if we avoid including long-running tasks in the UI thread. In the case of ANR occurrence, or in the scope of UI to be unresponsive, it is better to create a child or worker class in which we can place database and network operations, etc. Other best things to follow are – to raise a progress dialog to the user if you are doing a background work; If it is a game, place calculations on child thread, etc.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n AIDL is an abbreviation for \u2018Android Interface Definition Language\u2019. It helps in providing the same level of communication between the client and server through Interprocess Communication (IPC) by handling the interface requirements. As processes are independent and one process can\u2019t access the part of other processes, AIDL helps in breaking down the process into the primitive processes or parts further making it easy for the Android OS to understand and compute it.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n AIDL supports the following data types:<\/p>\r\n\r\n The file that represents Android Manifest is AndroidManifest.xml<\/strong>. It contains the package (package name matches your code\u2019s namespace) of information about the application along with its components. It passes the information about the application to the Android tools, Google Play, and mainly, to the OS.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n A primitive part of an activity is known as a fragment. They are reusable and reliable. You can move the fragment around the activity and can combine it with other fragments that belong to the same activity.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n A visible activity is nothing but an activity that is visible to the user. It sits behind a foreground dialog. It doesn\u2019t need to be present on the foreground itself.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n A Sticky Intent is an intent that is used with a sticky broadcast allowing the communication between function and service. Here, sendStickyBroadcast() performs a sendBroadcast(Intent). The sticky intent moves around even after the completion of the broadcast, allowing the users to retrieve the data from the return value registerReceiver(BroadcastReceiver, IntentFilter). These are the generally asked Android Interview Questions and Answers<\/strong> for the fresher candidate in the Interview.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n Portable Wi-Fi Hotspot is a hotspot that allows one to share their device\u2019s internet connection with other wireless devices. Portable means easy and handy, which says that it is a handy internet hotspot to share the internet with any suitable devices with the help of one device. For example, using an access point, you can share your Android\u2019s internet with other phones, laptops, etc.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n Talking of an activity, the 4 essential states of it are :<\/p>\r\n\r\n<\/i><\/i>What is Android?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>Explain the android activity life cycle?<\/a><\/h4>\r\n<\/div>\r\n
<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n
<\/i><\/i>Describe Android Architecture?<\/a><\/h4>\r\n<\/div>\r\n
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<\/i><\/i>What is an Activity?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is the APK format?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is the Intent in Android?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What are the types of Intent?<\/a><\/h4>\r\n<\/div>\r\n
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<\/i><\/i>What is an Explicit Intent?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is an Implicit Intent?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is the action? <\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is ADB?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is ANR?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>When does ANR occur?<\/a><\/h4>\r\n<\/div>\r\n
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<\/i><\/i>How can the ANR be prevented?<\/a><\/h4>\r\n<\/div>\r\n
![\"Android](\"\/wp-content\/themes\/zeft\/images\/Android-Interview-Questions-and-Answers-Chennai.jpg\")
<\/a><\/div>\r\n<\/i><\/i>What is AIDL?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What data types are supported by AIDL?<\/a><\/h4>\r\n<\/div>\r\n
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<\/i><\/i>What is an Android Manifest file?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is a Fragment?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is a Visible activity?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i>What is a Sticky Intent?<\/a><\/h4>\r\n<\/div>\r\n
<\/i><\/i> What is a portable wi-fi hotspot?<\/a><\/h4>\r\n<\/div>\r\n
![\"Android](\"\/wp-content\/themes\/zeft\/images\/Android-Interview-Questions-and-Answers-Bangalore.jpg\")
<\/a><\/div>\r\n<\/i><\/i>In an activity, what are the 4 essential states?<\/a><\/h4>\r\n<\/div>\r\n
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<\/i><\/i>Enumerate three key loops when monitoring an activity?.<\/a><\/h4>\r\n<\/div>\r\n
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