What is Android ViewGroup?

ViewGroup Refer to the android. view. ViewGroup class, which is the base class of some special UI classes that can contain other View objects as children. Since ViewGroup objects are also View objects, multiple ViewGroup objects and View objects can be organized into an object tree to build a complex UI structure.

What is the use of ViewGroup in Android?

A ViewGroup is a special view that can contain other views. The ViewGroup is the base class for Layouts in android, like LinearLayout , RelativeLayout , FrameLayout etc. In other words, ViewGroup is generally used to define the layout in which views(widgets) will be set/arranged/listed on the android screen.

What is the main purpose of a ViewGroup?

What is the main purpose of a ViewGroup? It groups together the most common views that developers use in Android apps. It serves as a container for View objects, and is responsible for arranging the View objects within it. It is required to make a view interactive as a way to group TextViews on a screen.

What is Z order in Android?

In Android starting from API level 21, items in the layout file get their Z order both from how they are ordered within the file, as described in correct answer, and from their elevation, a higher elevation value means the item gets a higher Z order.

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What is view and how it works in Android?

View objects are used specifically for drawing content onto the screen of an Android device. While you can instantiate a View in your Java code, the easiest way to use them is through an XML layout file. An example of this can be seen when you create an simple “Hello World” application in Android Studio.

What are the features of Android?

Features of Android

Sr.No. Feature & Description
1 Beautiful UI Android OS basic screen provides a beautiful and intuitive user interface.
2 Connectivity GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
3 Storage SQLite, a lightweight relational database, is used for data storage purposes.

What is Clipchildren?

2, can through android:layout_gravity control over how the part of the display. … 3, Android:clipchildren meaning: whether to limit the child view within its scope.

What is the main component in Android?

Android applications are broken down into four main components: activities, services, content providers, and broadcast receivers. Approaching Android from these four components gives the developer the competitive edge to be a trendsetter in mobile application development.

What is a fragment in Android?

A Fragment represents a reusable portion of your app’s UI. A fragment defines and manages its own layout, has its own lifecycle, and can handle its own input events. Fragments cannot live on their own–they must be hosted by an activity or another fragment.

Can a view contain ViewGroup?

ViewGroup is an invisible container of other views (child views) and other ViewGroup. Eg: LinearLayout is a ViewGroup that can contain other views in it. ViewGroup is a special kind of view that is extended from View as its base class. ViewGroup is the base class for layouts.

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How many security levels are there on Android?

The idea is to simplify the amount of work on the service provider’s end, by supporting multiple levels of streaming quality based on the security capabilities of the receiving device. To achieve this, Widevine protects content across three levels of security, simply named L3, L2, and L1.

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