LayoutInflater is a class used to instantiate layout XML file into its corresponding view objects which can be used in Java programs. In simple terms, there are two ways to create UI in android. One is a static way and another is dynamic or programmatically.
What is inflate method in Android?
inflate(int resource, ViewGroup root) Inflate a new view hierarchy from the specified xml resource. View. inflate(XmlPullParser parser, ViewGroup root) Inflate a new view hierarchy from the specified xml node.
What is the use of LayoutInflater class Mcq?
LayoutInflater is a class used to create views from a layout resource (xml) file or a node of it ( XmlPullParser objects). These can be a representation of either a single view or a view hierarchy.
What does it mean to inflate a file?
When you write an XML layout, it will be inflated by the Android OS which basically means that it will be rendered by creating view object in memory.
How do you use LayoutInflater in Kotlin?
Typically, you don’t ever need to directly use a LayoutInflater . Android does most of the layout inflation for you when you call setContentView() in the onCreate() method of your activity. So you, as the programmer, are responsible for making sure the views are inflated.
Why Inflater is used in android?
What is an Inflater ? To summarize what the LayoutInflater Documentation says… A LayoutInflater is one of the Android System Services that is responsible for taking your XML files that define a layout, and converting them into View objects. The OS then uses these view objects to draw the screen.
What is attach to root in android?
in this case is the widget/layout that is surrounding the view objects that you want to inflate using findViewById(). attachToRoot: attaches the views to their parent (includes them in the parent hierarchy), so any touch event that the views recieve will also be transfered to parent view.
How are layouts placed in Android?
Layout files are stored in “res-> layout” in the Android application. When we open the resource of the application we find the layout files of the Android application. We can create layouts in the XML file or in the Java file programmatically. First, we will create a new Android Studio project named “Layouts Example”.
What is onCreateOptionsMenu in Android?
You use onCreateOptionsMenu() to specify the options menu for an activity. In this method, you can inflate your menu resource (defined in XML) into the Menu provided in the callback.
When a button is clicked which listener you can use?
If you have more than one button click event, you can use switch case to identify which button is clicked. Link the button from the XML by calling findViewById() method and set the onClick listener by using setOnClickListener() method. setOnClickListener takes an OnClickListener object as the parameter.
Is extracting the same as decompressing?
– Unzipping a file with other zip programs
Here, I have right-clicked on the zipped file and selected “Extract to here.” “Extract” is the same thing as “unzip.” Windows also sometimes places “Extract files” links in toolbars which may be useful to you.
What does inflating mean in Linux?
Text files on the other hand can be compressed greatly. To sum it up: ‘inflating’ decompresses a file and ‘extracts’ it from the container. ‘extracting’ just gets the file out of the container.
What is inflating in Linux?
“Inflating” means that the file was being processed by the unzip procedure. Once “inflated,” the file should be fine. Edit: Ask your friend to give you the exact error message they received, if any, and why they think the “unzip” failed.
What is ActivityMainBinding in android?
android data-binding. DataBinding Guide States. By default, a Binding class will be generated based on the name of the layout file, converting it to Pascal case and suffixing “Binding” to it. The above layout file was activity_main. xml so the generate class was ActivityMainBinding.
What is android ViewGroup?
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.
How can I learn Kotlin language?
5 Online resources to learn Kotlin for free
- Kotlin Bootcamp For Programmers on Udacity by Google. …
- Introduction To Kotlin Programming on Oreilly by JetBrains. …
- Kotlin Course – Tutorial For Beginners on YouTube by freeCodeCamp.org. …
- Kotlin For Java Developers on Coursera by JetBrains.