IOS Heartbeat Animation (collection of Hearts animation)

An animation of a heartbeat

-(void) viewdidload {
    [super viewdidload];
    UIButton *heart = [[UIButton alloc]initwithframe:cgrectmake (Self.view.frame.size.width * 0.5-25, M, M)];
    [Self.view Addsubview:heart];
    [Heart setimage:[uiimage imagenamed:@ "5_heart"] forstate:uicontrolstatenormal];
    [Heart setimage:[uiimage imagenamed:@ "5_heart_clicked"] forstate:uicontrolstateselected];
    [Heart addtarget:self Action: @selector (Heartbuttonclick:) forcontrolevents:uicontroleventtouchupinside];
}

/**
 *  Heartbeat
 /
(void) Heartbuttonclick: (UIButton *) button{
    button.selected =! button.selected;
    Cakeyframeanimation *k = [cakeyframeanimation animationwithkeypath:@ "Transform.scale"];
    K.values =  @[@ (0.1), @ (1.0), @ (1.5)];
    K.keytimes = @[@ (0.0), @ (0.5), @ (0.8), @ (1.0)];
    K.calculationmode = kcaanimationlinear;
    [Button.layer addanimation:k forkey:@ "Show"];
}