google Things To Know Before You Buy

google Things To Know Before You Buy

Blog Article

Shows a button with a picture (as opposed to textual content) which can be pressed or clicked through the person.  ImageSwitcher

Hints the Android Method whether or not the view node related to this View must be A part of a view construction used for autofill purposes.  android:importantForContentCapture

Add any focusable views that are descendants of this view (quite possibly including this view whether it is focusable by itself) to views. If we are in touch manner, only insert views that happen to be also focusable in touch mode.

Boolean that controls whether a view normally takes concentrate though in contact mode.  android:focusedByDefault

Defines whether this view reacts to context simply click functions. May be a boolean worth, such as "legitimate" or "Bogus".

View.MeasureSpec A MeasureSpec encapsulates the structure prerequisites handed from parent to youngster.  interface

Structure is usually a two go method: a measure go plus a format go. The measuring go is carried out in evaluate(int, int) and is particularly a prime-down traversal from the view tree. Every single view pushes dimension technical specs down the tree over the recursion. At the conclusion of the measure go, every single view has saved its measurements. The 2nd move happens in format(int, int, int, int) and can also be major-down. In the course of this move Every father or mother is to blame for positioning all of its youngsters using the sizes computed from the measure go. Each time a view's measure() approach returns, its getMeasuredWidth() and getMeasuredHeight() values should be established, in conjunction with These for all of that view's descendants. A view's measured width and measured top values have to respect the constraints imposed because of the view's mother and father. This assures that at the end of the measure move, all dad and mom accept all in their children's measurements. A parent view may get in touch with evaluate() in excess of when on its small children. Such as, the mum or dad might evaluate Just about every check here little one when with unspecified dimensions to Learn how huge they want to be, then call measure() on them once more with precise quantities Should the sum of all the kids's unconstrained measurements is too significant or far too small. The evaluate move makes use of two courses to communicate dimensions. The MeasureSpec course is employed by views to tell their moms and dads how they would like to be calculated and positioned.

This class signifies a delegate that could be registered inside of a View to reinforce accessibility help by way of composition rather by using inheritance.  class

int: An attribute in The present topic which contains a reference to the style resource that provides default values for the view. Could be 0 not to seek out defaults.

Consumer: accepts opportunity scroll capture targets; benefits.settle for may be identified as zero or maybe more moments around the calling thread right before onScrollCaptureSearch returns This worth can not be null.

The view drawing cache was mostly built obsolete with the introduction of hardware-accelerated rendering in API eleven. With hardware-acceleration, intermediate cache levels are mainly unneeded and can certainly lead to a Internet decline in efficiency as a consequence of the cost of developing and updating the layer. In the unusual conditions exactly where caching levels are practical, like for alpha animations, setLayerType(int, android.graphics.Paint) handles this with hardware rendering.}