5 Easy Facts About best Described

5 Easy Facts About best Described

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int: Optional. Otherwise null, on return this will have the offset in area view coordinates of this view from before this operation to after it completes. View implementations may well use this to regulate predicted input coordinate tracking.

Returns this view's preference for expose behavior when it gains focus. When this technique returns real for a child view requesting concentration, ancestor views responding to a focus transform in ViewParent#requestChildFocus(View, View) should make a best work to make the freshly concentrated boy or girl entirely noticeable into the user.

Dispatch a vital function to the next view on the main target path. This route runs within the prime of the view tree right down to the now focused view. If this view has emphasis, it will dispatch to by itself. Usually it will dispatch the following node down the main focus route. This method also fires any crucial listeners.

The view drawing cache was mostly made obsolete with the introduction of components-accelerated rendering in API eleven. With hardware-acceleration, intermediate cache levels are largely avoidable and can easily bring about a net decline in efficiency as a consequence of the price of building and updating the layer. Inside the scarce instances wherever caching layers are valuable, such as for alpha animations, setLayerType(int, android.graphics.Paint) handles this with hardware rendering.

Observe: The Android framework is chargeable for measuring, laying out and drawing views. You shouldn't call techniques that carry out these actions on views oneself Except if you are actually employing a ViewGroup.

View.OnKeyListener Interface definition for the callback for being invoked when a components important celebration is dispatched to this view.  interface

View.OnCapturedPointerListener Interface definition for just a callback for being invoked every time a captured pointer event is becoming dispatched this view.  interface

Trigger an invalidate of the desired space to happen over a subsequent website cycle through the occasion loop. void postInvalidateDelayed(very long delayMilliseconds)

Defines the alignment on the textual content. May very well be an integer value, like "one hundred". Have to be considered one of the subsequent constant values.

Defines another view to offer target to when the next aim is View.FOCUS_UP In case the reference refers into a view that does not exist or is an element of a hierarchy that's invisible, a RuntimeException will final result if the reference is accessed.

The view drawing cache was mainly produced out of date While using the introduction of hardware-accelerated rendering in API 11. With components-acceleration, intermediate cache levels are largely needless and can certainly bring about a net loss in functionality as a consequence of the cost of producing and updating the layer. From the scarce cases in which caching layers are valuable, which include for alpha animations, setLayerType(int, android.graphics.Paint) handles this with components rendering.}