以编程方式更改UIButton大小-iOS

Question

I have a simple iOS application which is using the Google Plus iOS SDK. I want to customise the sign in button. I have managed to get it looking how I want, but I can't get the button to be the size I want. (I am not using auto layout). Here is my code in my viewDidLoad:

[addservice_4 setImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateNormal];
[addservice_4 setImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateHighlighted];
[addservice_4 setImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateSelected];
addservice_4.layer.cornerRadius = 5;
addservice_4.layer.borderWidth = 1.0f;
addservice_4.layer.borderColor = [[UIColor blueColor] CGColor];

Doing the above changes programmatically leaves me with this end result:

As you can see the button is too wide. So I tried change its size programmatically but that does not work either:

addservice_4.frame = CGRectMake(20, 22, 101, 30);

Is there any way to fix this?

Answer 1

if you have to set the image property on UIButton Apple recommends using an image with the right size or double its size if using image assets.

if that's not a good option for you, I guess you could get the setFrame: method to work as you'd expect in your question by using the setBackgroundImage:forState instead of setImage:forState like this:

[addservice_4 setBackgroundImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateNormal];
[addservice_4 setBackgroundImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateHighlighted];
[addservice_4 setBackgroundImage:[UIImage imageNamed:@"uiTagFriendsAdd.png"] forState:UIControlStateSelected];
addservice_4.layer.cornerRadius = 5;
addservice_4.layer.borderWidth = 1.0f;
addservice_4.layer.borderColor = [[UIColor blueColor] CGColor];
addservice_4.frame = CGRectMake(20, 22, 101, 30);

Answer 2

Using Autolayout in the end turned out to fix the problem (because I believe the constraints it puts in place stop the Google Plus SDK from making the button bigger). The only problem is that I now have to fix a mirage of other problems like support for 3.5 inch display and so on because Autolayout is truly horrible.... :(