Considerations To Know About view
Considerations To Know About view
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This process was deprecated in API level 28. The view drawing cache was largely produced out of date with the introduction of hardware-accelerated rendering in API 11. With hardware-acceleration, intermediate cache levels are largely unnecessary and can certainly result in a net loss in performance resulting from the expense of producing and updating the layer. In the exceptional instances exactly where caching layers are valuable, for instance for alpha animations, setLayerType(int, android.graphics.
Gets the View's recent autofill value. By default returns null, but subclasses must override it and return an appropriate worth to appropriately assist the Autofill Framework.
Defines textual content that briefly describes written content in the view. This property is made use of principally for accessibility. Considering that some views would not have textual illustration this attribute may be used for providing these kinds of.
could be the origin from which the y-coordinate is calculated. In multiple-display screen situations, the coordinate House can span screens.
If a nested mum or dad does eat the fling, this view shouldn't scroll in any way, even to settle back again to a sound idle situation.
Stay location mode specifying that accessibility solutions should really interrupt ongoing speech to right away announce adjustments to this view. Use with setAccessibilityLiveRegion(int).
Text way is applying "any-RTL" algorithm. The paragraph course is RTL if it consists of any powerful RTL character, if not it's LTR if it contains any robust LTR figures. If you'll find neither, the paragraph way is definitely the view's settled layout direction.
This course was deprecated in API level 26. Make use of a custom made view or format to manage this operation rather
A components layer is helpful to apply a specific coloration filter and/or Mixing manner and/or translucency to the view and all its kids.
Structure is usually a two pass course of action: a measure pass along with a layout go. The measuring move is carried out in evaluate(int, int) and is also a prime-down traversal in the view tree. Every single view pushes dimension technical specs down the tree in the course of the recursion. At the conclusion of the measure pass, each and every view has saved its measurements. The next go transpires in structure(int, int, int, int) and is likewise top-down. For the duration of this move Every single mum or dad is accountable for positioning all of its kids using the sizes computed within the measure go. When a view's evaluate() method returns, its getMeasuredWidth() and getMeasuredHeight() values website should be established, in conjunction with those for all of that view's descendants. A view's measured width and measured peak values have to respect the constraints imposed because of the view's moms and dads. This assures that at the conclusion of the measure go, all mother and father take all of their kid's measurements. A father or mother view may get in touch with measure() much more than when on its youngsters. By way of example, the father or mother may evaluate Every single little one the moment with unspecified dimensions to find out how huge they would like to be, then call measure() on them again with real numbers In the event the sum of all the children's unconstrained dimensions is simply too big or far too modest. The evaluate pass works by using two classes to speak Proportions. The MeasureSpec course is employed by views to tell their mothers and fathers how they wish to be measured and positioned.
Dispatch a crucial event ahead of it's processed by any enter system connected to the view hierarchy. This can be used to intercept essential activities in Specific cases before the IME consumes them; a normal illustration might be dealing with the Again vital to update the application's UI rather than making it possible for the IME to check out it and close itself.
Textual content course is utilizing "initial solid algorithm". The primary powerful directional character determines the paragraph route. If there isn't a strong directional character, the paragraph direction may be the view's resolved layout way.
Returns accurate When the efficient visibility of your view at this stage is opaque, whatever the clear location; returns Phony if it is achievable for underlying windows to generally be observed guiding the view.
Identified as when the window that contains this view gains or loses window concentration. ViewGroups should really override to route for their little ones.}