I'm creating a view and animating an instance variable of that
view. If the instance variable is a float, everything works
perfectly, but if I change the float to an int, the animation
doesn't happen. It appears that the "animationWithKeyPath" function
doesn't even get called if my ivar is an int.
Can anyone tell me why my code doesn't work?
Class cls = objc_allocateClassPair([NSView class],
"AnimatedView", 0);
class_addIvar(cls, "animValue", sizeof(int), log2(sizeof(int)),
"i");
Method setterImpl = class_getClassMethod([MyView class],
@selector(setAnimValue:));
class_addMethod(cls, @selector(setAnimValue:),
method_getImplementation(setterImpl), "v@:i");
objc_registerClassPair(cls);
NSView *av = class_createInstance(cls, 0);
[av init];
CABasicAnimation *anim = [CABasicAnimation
animationWithKeyPath:@"animValue"];
[anim setFromValue:[NSNumber numberWithInt:0]];
NSDictionary *dic = [NSDictionary dictionaryWithObject:anim
forKey:@"animValue"];
[av setAnimations:dic];
[self addSubview:av];
objc_msgSend([av animator], @selector(setAnimValue:), (int)100);
Implementation of setAnimValue:
+(void)setAnimValue:(int) val {
printf("setAnimValue val=%d\n", val);
}
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