IOS 的动画放大与缩小,并非按照找它的中心点放大和缩小,而是左上角 .我分析了下原来是Autolayout 与View Transforms的冲突造成的. - (void) addSubviewWithZoomInAnimation:(UIView*)view duration:(float)secs option:(UIViewAnimationOptions)option { // first reduce the view to 1/100th of its original dimen
1)iOS动画的模型:三层树模型: https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CoreAnimation_guide/CoreAnimationBasics/CoreAnimationBasics.html#//apple_ref/doc/uid/TP40004514-CH2-SW12 Layer Trees Reflect Different Aspects of the Animati