ios點擊產生波紋效果

ios點擊產生波紋效果
ios點擊產生波紋效果by 伍雪穎

- (void)viewDidLoad{    [super viewDidLoad];    RippleView = [[UIView alloc] initWithFrame:(CGRect){0,0,300,300}];    RippleView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];    RippleView.layer.cornerRadius = 150;    RippleView.layer.masksToBounds=true;    RippleView.alpha=0;}-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [super touchesBegan:touches withEvent:event];    UITouch *touch = [touches anyObject];    CGPoint location = [touch locationInView:self.view];    [self.view addSubview:RippleView];    RippleView.center = location;    RippleView.transform = CGAffineTransformMakeScale(0.5, 0.5);    [UIView animateWithDuration:0.1                     animations:^{                         RippleView.alpha=1;                         self.view.alpha=0.3;                     }];    [UIView animateWithDuration:0.7                          delay:0                        options:UIViewAnimationOptionCurveEaseInOut                     animations:^{                         RippleView.transform = CGAffineTransformMakeScale(1,1);                         RippleView.alpha=0;                         self.view.alpha=1;                     } completion:^(BOOL finished) {                         [RippleView removeFromSuperview];                     }];}