如何解決IOS動畫中Autolayout與ViewTransforms的沖突

2019-11-14 20:31:25

字體：大中小

供稿：網(wǎng)友

IOS 的動畫放大與縮小，并非按照找它的中心點放大和縮小，而是左上角。我分析了下原來是Autolayout 與View Transforms的沖突造成的。

- (void) addSubviewWithZoomInAnimation:(UIView*)view duration:(float)secs option:(UIViewAnimationOptions)option{// first reduce the view to 1/100th of its original dimensionCGAffineTransform trans = CGAffineTransformScale(view.transform, 0.01, 0.01);view.transform = trans;    // do it instantly, no animation[self addSubview:view];// now return the view to normal dimension, animating this tranformation[UIView animateWithDuration:secs delay:0.0 options:optionanimations:^{view.transform = CGAffineTransformScale(view.transform, 100.0, 100.0);}completion:nil];    }- (void) removeWithZoomOutAnimation:(float)secs option:(UIViewAnimationOptions)option{[UIView animateWithDuration:secs delay:0.0 options:optionanimations:^{self.transform = CGAffineTransformScale(self.transform, 0.01, 0.01);}completion:^(BOOL finished) { [self removeFromSuperview]; }];}