UIViewAnimation
这是最基本的动画
- (void)startAnimating{
//__bridge 不移交控制权
[UIView beginAnimations:@"animation" context:(__bridge void *)(self)];
[UIView setAnimationDuration:0.4];
_square.center = CGPointMake(_square.center.x + 100, _square.center.y);
[UIView setAnimationDelegate:self];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];
[UIView commitAnimations];
}
UIViewAnimationWithBlocks
对基本UIViewAnimation的block封装
- (void)startBlockAnimation{
UIViewAnimationOptions options = UIViewAnimationOptionAutoreverse | UIViewAnimationOptionTransitionCrossDissolve ;
[UIView animateWithDuration:0.4 delay:0 options:options animations:^{
_square.center = CGPointMake(_square.center.x + 100, _square.center.y);
} completion:^(BOOL finished) {
}];
}
+ (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); //翻转动画
UIViewKeyframeAnimations
设置动画里面的几个关键帧, 系统自动构建出完整的动画
//实现_square 按正方形规矩运动
- (void)startKeyFrameAnimation{
UIViewKeyframeAnimationOptions options = UIViewKeyframeAnimationOptionRepeat;
[UIView animateKeyframesWithDuration:4 delay:0 options:options animations:^{
double frameDuration = 1.0 / 4;
[UIView addKeyframeWithRelativeStartTime:0 relativeDuration:frameDuration animations:^{
_square.center = CGPointMake(_square.center.x + 100, _square.center.y);
}];
[UIView addKeyframeWithRelativeStartTime:frameDuration relativeDuration:frameDuration animations:^{
_square.center = CGPointMake(_square.center.x , _square.center.y + 100);
}];
[UIView addKeyframeWithRelativeStartTime:frameDuration * 2 relativeDuration:frameDuration animations:^{
_square.center = CGPointMake(_square.center.x - 100, _square.center.y);
}];
[UIView addKeyframeWithRelativeStartTime:frameDuration * 3 relativeDuration:frameDuration animations:^{
_square.center = CGPointMake(_square.center.x , _square.center.y -100);
}];
} completion:nil];
}
