youtube Can Be Fun For Anyone

youtube Can Be Fun For Anyone

Blog Article

View.OnTouchListener Interface definition for just a callback to become invoked each time a contact event is dispatched to this view.  interface

Views might have an integer id connected to them. These ids are generally assigned in the layout XML information, and so are utilized to obtain particular views inside the view tree. A typical sample will be to: Determine a Button in the layout file and assign it a unique ID.

Dispatch a crucial event to the subsequent view on the focus route. This path operates through the best from the view tree down to the at this time centered view. If this view has target, it'll dispatch to alone. Normally it's going to dispatch the next node down the main target path. This method also fires any critical listeners.

The view drawing cache was mainly created out of date With all the introduction of components-accelerated rendering in API 11. With components-acceleration, intermediate cache layers are mainly pointless and can certainly lead to a Web loss in effectiveness as a result of the expense of making and updating the layer. During the uncommon scenarios exactly where caching levels are beneficial, such as for alpha animations, setLayerType(int, android.graphics.Paint) handles this with hardware rendering.

This regular was deprecated in API amount 28. The view drawing cache was mainly made obsolete Using the introduction of hardware-accelerated rendering in API 11. With hardware-acceleration, intermediate cache layers are largely pointless and can easily lead to a net loss in overall performance as a result of the price of producing and updating the layer. Inside the uncommon circumstances exactly where caching layers are useful, such as for alpha animations, setLayerType(int, android.graphics.

Rect: If the strategy returns genuine, incorporates the coordinates of the noticeable part of this view while in the coordinate House from the view's root view. If the strategy returns Bogus, the contents of r are undefined.

Compared with IDs, tags usually are not accustomed to determine views. Tags are basically an additional piece of knowledge which can be connected to a view. They are really most frequently used as being a advantage to retail outlet facts related to views inside the views them selves instead of by putting them inside a separate framework.

Bring about an invalidate of the desired region to occur over a subsequent cycle here with the party loop. void postInvalidateDelayed(very long delayMilliseconds)

This process was deprecated in API amount 28. The view drawing cache was largely produced obsolete Along with the introduction of components-accelerated rendering in API 11. With hardware-acceleration, intermediate cache layers are mostly avoidable and can certainly result in a Internet reduction in effectiveness due to the cost of producing and updating the layer. Within the exceptional circumstances where by caching layers are useful, for example for alpha animations, setLayerType(int, android.graphics.

Whether or not this View must make use of a default emphasis spotlight when it receives concentrated but does not have R.attr.state_focused described in its history.  android:drawingCacheQuality

Utility to return a default dimension. Works by using the supplied size In the event the MeasureSpec imposed no constraints. Can get bigger if authorized because of the MeasureSpec.}