相关疑难解决方法(0)

如果我有一个像这样设置的类来自定义UIView.

@interface myView:UIView

- (id)init {
    self = [super init];
    if(self){
        [self foo];
    }
    return self;
}

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        [self foo];
    }
    return self;
}


-(void) foo{
   //Build UIView here 
}

为什么我会使用foo两次

myView *aView = [[myView alloc]init]]; 

要么

myView *aView = [[myView alloc]initWithFram:aFrame];