How to use ViewStub in android?
ViewStub stub = findViewById(R. id. stub); View inflated = stub. inflate();…
| XML attributes | |
|---|---|
| android:inflatedId | Overrides the id of the inflated View with this value. |
| android:layout | Supply an identifier for the layout resource to inflate when the ViewStub becomes visible or when forced to do so. |
Why use ViewStub android?
Simply a ViewStub is used to increase efficiency of rendering layout. By using ViewStub, manually views can be created but not added to view hierarchy. At the runtime, can be easily inflated, while ViewStub is inflated, the content of the viewstub will be replaced the defined layout in the viewstub.
How can I increase my android UI performance?
Improve the UI Performance of Your Android App
- Profile GPU rendering.
- Systrace.
- Layout inspector.
- Benefits of ConstraintLayout.
How can I get fragments to run faster?
- First of all: you should create a loading screen and start the background task for your database stuff.
- Before initiating the Fragment , do your work in the background and intimate the user about your processing,or you can also save your data on application launch so that you don’t have to fetch again and again.
What are Viewgroups in 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.
What is a SurfaceView in Android?
A SurfaceView is a custom view in Android that can be used to drawn inside it. The main difference between a View and a SurfaceView is that a View is drawn in the UI Thread , which is used for all the user interaction.
What is SurfaceTexture in Android?
android.graphics.SurfaceTexture. Captures frames from an image stream as an OpenGL ES texture. The image stream may come from either camera preview or video decode.
Which layout is faster in Android?
If you really know what you’re doing, RelativeLayouts can be faster. If you don’t, they can be much slower. Long Answer: Nesting layouts manually such as a FrameLayout within a LinearLayout versus using relative positioning in a RelativeLayout can have pros and cons either way.
What is app rendering?
UI Rendering is the act of generating a frame from your app and displaying it on the screen.
What is viewstub in Android Studio?
Android ViewStub. A ViewStub is a zero-sized invisible View which is used to load “layout resource” at runtime. ViewStub is a zero dimension View, so you will not see anything on the layout pallete.
How do I declare a viewstub in XML?
You can declare a ViewStub in an XML file like this: The android:layout attribute is a reference to the View that will be inflated next to a call of inflate (). So When the method inflate () is invoked the ViewStub is removed from its parent and replaced with the right View (the root view of mySubTree layout).
What is viewstub in Salesforce?
A ViewStub is a zero-sized invisible View which is used to load “layout resource” at runtime. ViewStub is a zero dimension View, so you will not see anything on the layout pallete. To make parent resource visible, inflate () method is invoked. To make ViewStub visible or invisible, setVisibility (int) method is invoked.
When to inflate a viewstub?
It is a dumb and lightweight view and it has zero dimension. Depends upon requirement, whenever in need we can inflate at runtime. This is a classic example to handle when there are complicated views to be handled. When the ViewStub is inflated, it replaces itself in its parent view with the inflated layout resource.