谈UIView Animation编程艺术

-(void)changeFrame{
CGRect originalRect = self.anView.frame;
CGRect rect = CGRectMake(self.anView.frame.origin.x-20, self.anView.frame.origin.y-120, 160, 80);
[UIView animateWithDuration:1 animations:^{
self.anView.frame = rect;
} completion:^(BOOL finished) {
[UIView animateWithDuration:1 animations:^{
self.anView.frame = originalRect;
}];
}];
}

-(void)changeBounds{
CGRect originalBounds = self.anView.bounds;
//尽管这个rect的x，y跟原始的不同，动画也只是改变了宽高
CGRect rect = CGRectMake(0, 0, 300, 120);
[UIView animateWithDuration:1 animations:^{
self.anView.bounds = rect;
} completion:^(BOOL finished) {
[UIView animateWithDuration:1 animations:^{
self.anView.bounds = originalBounds;
}];
}];
}

-(void)changeCenter{
CGPoint originalPoint = self.anView.center;
CGPoint point = CGPointMake(self.anView.center.x, self.anView.center.y-170);
[UIView animateWithDuration:0.3 animations:^{
self.anView.center = point;
} completion:^(BOOL finished) {
[UIView animateWithDuration:1 animations:^{
self.anView.center = originalPoint;
}];
}];
}

-(void)transform{
CGAffineTransform originalTransform = self.anView.transform;
[UIView animateWithDuration:2 animations:^{
//self.anView.transform = CGAffineTransformMakeScale(0.6, 0.6);//缩放
//self.anView.transform = CGAffineTransformMakeTranslation(60, -60);
self.anView.transform = CGAffineTransformMakeRotation(4.0f);
} completion:^(BOOL finished) {
[UIView animateWithDuration:2 animations:^{
self.anView.transform = originalTransform;
}];
}];
}

-(void)alpha{
[UIView animateWithDuration:2 animations:^{
self.anView.alpha = 0.3;
} completion:^(BOOL finished) {
[UIView animateWithDuration:2 animations:^{
self.anView.alpha = 1;
}];
}];
}

-(void)changeBackground{
[UIView animateKeyframesWithDuration:9.0 delay:0.f options:UIViewKeyframeAnimationOptionCalculationModeLinear animations:^{
[UIView addKeyframeWithRelativeStartTime:0.f relativeDuration:1.0 / 4 animations:^{
self.anView.backgroundColor = [UIColor colorWithRed:0.9475 green:0.1921 blue:0.1746 alpha:1.0];
}];
[UIView addKeyframeWithRelativeStartTime:1.0 / 4 relativeDuration:1.0 / 4 animations:^{
self.anView.backgroundColor = [UIColor colorWithRed:0.1064 green:0.6052 blue:0.0334 alpha:1.0];
}];
[UIView addKeyframeWithRelativeStartTime:2.0 / 4 relativeDuration:1.0 / 4 animations:^{
self.anView.backgroundColor = [UIColor colorWithRed:0.1366 green:0.3017 blue:0.8411 alpha:1.0];
}];
[UIView addKeyframeWithRelativeStartTime:3.0 / 4 relativeDuration:1.0 / 4 animations:^{
self.anView.backgroundColor = [UIColor colorWithRed:0.619 green:0.037 blue:0.6719 alpha:1.0];
}];
[UIView addKeyframeWithRelativeStartTime:3.0 / 4 relativeDuration:1.0 / 4 animations:^{
self.anView.backgroundColor = [UIColor whiteColor];
}];
} completion:^(BOOL finished) {
NSLog(@"动画结束");
}];
}

-(void)springAnimation{
CGRect originalRect = self.anView.frame;
CGRect rect = CGRectMake(self.anView.frame.origin.x-80, self.anView.frame.origin.y, 120, 120);
[UIView animateWithDuration:0.4 delay:0 usingSpringWithDamping:0.5 initialSpringVelocity:4 options:UIViewAnimationOptionCurveLinear animations:^{
self.anView.frame = rect;
} completion:^(BOOL finished) {
[UIView animateWithDuration:1 delay:1 usingSpringWithDamping:0.5 initialSpringVelocity:4 options:UIViewAnimationOptionCurveLinear animations:^{
self.anView.frame = originalRect;
} completion:^(BOOL finished) {
}];
}];
}

-(void)transitionAnimation{
[UIView transitionWithView:self.anView duration:2.0 options:UIViewAnimationOptionTransitionFlipFromLeft animations:^{
//self.anView.backgroundColor = [UIColor blueColor];
} completion:^(BOOL finished) {
[UIView transitionWithView:self.anView duration:2.0 options:UIViewAnimationOptionTransitionFlipFromRight animations:^{
//self.anView.backgroundColor = [UIColor greenColor];
} completion:^(BOOL finished) {
}];
}];
}