最近有一個(gè)水機(jī)沖洗動(dòng)畫校哎，發(fā)現(xiàn)動(dòng)畫開始時(shí)两波，從前臺(tái)切換到后臺(tái)瞳步，然后立馬從后臺(tái)切換到前臺(tái)闷哆，這時(shí)動(dòng)畫停止了，只要加上這句代碼就行：
animation.removedOnCompletion = NO;
官方解釋：/* When true, the animation is removed from the render tree once its
- active duration has passed. Defaults to YES. */
當(dāng)為真時(shí)单起，一旦活動(dòng)持續(xù)時(shí)間已過(guò)抱怔，動(dòng)畫將從呈現(xiàn)樹中刪除。默認(rèn)值為YES嘀倒。
