ios – 为形状添加手势 – c4framework

[buttonA addGesture:TAP name:@"tapGesture" action:@"setPosition"];

我猜你得到错误的原因是因为SetPosition方法是因为你试图直接在C4Shape对象上运行setPosition方法.本地,C4Shapes没有这种方法.

在C4中,所有对象都可以附加手势,但是当您在对象上触发手势时,为了运行任何自定义代码,您应该首先继承C4Shape并编写一个特殊方法来处理您想要查看的行为.

例如,我会像这样创建@L_943_11@myShape类：

@interface MyShape : C4Shape
-(void)setNewPosition;
@end

@implementation MyShape
-(void)setNewPosition {
    //will set the center of the shape to a new random point
    self.center = CGPointMake([C4Math randomInt:768],[C4Math randomInt:1024]);
}
@end

然后,在我的C4WorkSpace中：

#import "C4WorkSpace.h"
#import "MyShape.h"

@implementation C4WorkSpace {
    MyShape *newShape;
}
-(void)setup {
    newShape = [MyShape new];
    [newShape ellipse:CGRectMake(100,100,200,200)];
    [newShape addGesture:TAP name:@"tapGesture" action:@"setNewPosition"];
    [self.canvas addShape:newShape];
}
@end

这应该使用新的子类形状注册轻击手势,并在触发手势时运行其setNewPosition方法.