Facebook开源动画库 POP-小实例

- (void)viewDidLoad
{
[super viewDidLoad];
//添加手势
UIPanGestureRecognizer *gesture = [[UIPanGestureRecognizer alloc] init];
[gesture addTarget:self action:@selector(changeSize:)];
[self.view addGestureRecognizer:gesture];

}

- (void)changeSize:(UIPanGestureRecognizer*)tap{
POPSpringAnimation *springAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPViewFrame];

CGPoint point = [tap locationInView:self.view];
springAnimation.toValue = [NSValue valueWithCGRect:CGRectMake(0, 0, point.x, point.y)];

//弹性值
springAnimation.springBounciness = 20.0;
//弹性速度
springAnimation.springSpeed = 20.0;
[_springView pop_addAnimation:springAnimation forKey:@"changeframe"];

}

- (void)viewDidLoad
{
[super viewDidLoad];

_showPosition = CGRectMake(320-147, 5, 147, 160);
_hidePosition = CGRectMake(320, 5, 0, 0);

_popView = [[UIImageView alloc] initWithFrame:_hidePosition];
_popView.image = [UIImage imageNamed:@"menu.png"];
[self.view addSubview:_popView];

self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"+" style:UIBarButtonItemStyleDone target:self action:@selector(showPop)];

//让屏幕从导航栏下开始算(0,0)
if ([self respondsToSelector:@selector(setEdgesForExtendedLayout:)]) {
self.edgesForExtendedLayout = UIRectEdgeNone;
}
}

- (void)showPop{

if (_isOpened) {
[self hidePop];
return;
}
_isOpened = YES;

POPSpringAnimation *positionAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPViewFrame];
positionAnimation.fromValue = [NSValue valueWithCGRect:_hidePosition];
positionAnimation.toValue = [NSValue valueWithCGRect:_showPosition];
positionAnimation.springBounciness = 15.0f;
positionAnimation.springSpeed = 20.0f;
[_popView pop_addAnimation:positionAnimation forKey:@"frameAnimation"];
}

- (void)hidePop{

POPBasicAnimation *positionAnimation = [POPBasicAnimation animationWithPropertyNamed:kPOPViewFrame];
positionAnimation.fromValue = [NSValue valueWithCGRect:_showPosition];
positionAnimation.toValue = [NSValue valueWithCGRect:_hidePosition];
[_popView pop_addAnimation:positionAnimation forKey:@"frameAnimation"];

_isOpened = NO;
}

@interface ViewController ()

@property (nonatomic, retain) UIView *button;
@property (nonatomic, retain) UIView *popOut;
@property (readwrite, assign) BOOL timerRunning;

@end

@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];

_popOut = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"TimerPopOut"]];
[_popOut setFrame:CGRectMake(245, 70, 0, 0)];
[self.view addSubview:_popOut];

_button = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"TimerButton"]];
[_button setFrame:CGRectMake(240, 50, 46, 46)];
[self.view addSubview:_button];

_timerRunning = NO;

[self.view addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(demoAnimate:)]];
}

- (void)demoAnimate:(UITapGestureRecognizer*)tap
{
_timerRunning = !_timerRunning;

POPSpringAnimation *buttonAnimation = [POPSpringAnimation animation];
buttonAnimation.property = [POPAnimatableProperty propertyWithName:kPOPLayerSize];
if (_timerRunning) {
buttonAnimation.toValue = [NSValue valueWithCGSize:CGSizeMake(37, 37)];
}
else {
buttonAnimation.toValue = [NSValue valueWithCGSize:CGSizeMake(46, 46)];
}
buttonAnimation.springBounciness = 10.0;
buttonAnimation.springSpeed = 10.0;
[_button pop_addAnimation:buttonAnimation forKey:@"pop"];

POPSpringAnimation *popOutAnimation = [POPSpringAnimation animation];
popOutAnimation.property = [POPAnimatableProperty propertyWithName:kPOPViewFrame];
if (!_timerRunning) {
popOutAnimation.toValue = [NSValue valueWithCGRect:CGRectMake(245, 70, 0, 10)];
}
else {
popOutAnimation.toValue = [NSValue valueWithCGRect:CGRectMake(180, 60, 75, 26)];
}
popOutAnimation.velocity = [NSValue valueWithCGRect:CGRectMake(200, 0, 300, -200)];
popOutAnimation.springBounciness = 10.0;
popOutAnimation.springSpeed = 10.0;
[_popOut pop_addAnimation:popOutAnimation forKey:@"slide"];
}