带有尖角的FBLoginView按钮

Question

I'm using FBLoginView in an IOS app.

Can I change the button of FBLoginView to have sharp instead of round corners?

Answer 1

我认为您可以尝试遵循以下代码（ 快速3 ）以使拐角看起来更尖锐（ 请参见结果 ）。

loginButton.backgroundColor = UIColor(red:0.25, green:0.36, blue:0.68, alpha:1.0)

Answer 2

You'd have to use a custom button for that, you get FBLoginView from a third party library, and would have to work within the constraints set by the third party library.

Nevertheless, in case FBLoginView uses a layer's cornerRadius to round itself internally, you could inspect the view hierarchy and set the corner radius of the offending view to 0.0 to get sharp edges.

Answer 3

Apparently, the corners in FBLoginView are from the background image of the button, so although this is a hack - changing it solves the problem:

FBLoginView *loginView = [[FBLoginView alloc] init];
loginView.frame = CGRectMake(21, 108, 279, 37);
for (UIView *subview in loginView.subviews)
{
    if ([subview isKindOfClass:[UIButton class]])
    {
        UIButton *FBButton = (UIButton *)subview;
        [FBButton setBackgroundImage:[UIImage imageNamed:@"blue_rect.png"] forState:UIControlStateNormal];
    }
}
loginView.delegate = self;
[self.view addSubview:loginView];