看看这段代码:

斯威夫特4.2

let frameimg = CGRect(x: 15, y: 46, width: 55, height: 70)
let btnTest = UIButton(type: .roundedRect)
btnTest.frame = frameimg
btnTest.tag = 11
btnTest.setTitle("Test Button", for: .normal)
btnTest.addTarget(self, action: #selector(self.buttonAction(sender:)), for: .touchUpInside)
btnTest.titleLabel?.font = UIFont.boldSystemFont(ofSize: 12.0)
btnTest.titleLabel?.lineBreakMode = .byWordWrapping
btnTest.titleLabel?.numberOfLines = 2
btnTest.titleLabel?.textAlignment = .center
btnTest.setTitleColor(UIColor.gray, for: .normal)
btnTest.setTitleColor(UIColor.blue, for: .selected)
btnTest.showsTouchWhenHighlighted = true
view.addSubview(btnTest)

Objective - C

CGRect frameimg = CGRectMake(15, 46, 55,70);
UIButton  *SelectionButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
SelectionButton.frame=frameimg;
SelectionButton.tag=i;
[SelectionButton setTitle:[SelectionArray objectAtIndex:0] forState:UIControlStateNormal];
[SelectionButton addTarget:self action:@selector(BtnSelected:)
                  forControlEvents:UIControlEventTouchUpInside];
[SelectionButton.titleLabel setFont:[UIFont boldSystemFontOfSize:12.0]];
SelectionButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
SelectionButton.titleLabel.numberOfLines = 2;
SelectionButton.titleLabel.textAlignment = NSTextAlignmentCenter;
[SelectionButton setTitleColor:[UIColor grayColor] forState:(UIControlStateNormal)];
[SelectionButton setTitleColor:[UIColor blueColor] forState:UIControlStateSelected];
[SelectionButton setShowsTouchWhenHighlighted:YES];
[self.view addSubview:SelectionButton];

我希望这段代码将为您工作。

这是一个创建三个按钮的例子。只是移动他们的位置。

UIImage *buttonOff = [UIImage imageNamed:@"crysBallNorm.png"];
UIImage *buttonOn = [UIImage imageNamed:@"crysBallHigh.png"];

UIButton *predictButton = [UIButton alloc];
predictButton = [UIButton buttonWithType:UIButtonTypeCustom];
predictButton.frame = CGRectMake(180.0, 510.0, 120.0, 30.0);
[predictButton setBackgroundImage:buttonOff forState:UIControlStateNormal];
[predictButton setBackgroundImage:buttonOn forState:UIControlStateHighlighted];
[predictButton setTitle:@"Predict" forState:UIControlStateNormal];
[predictButton setTitleColor:[UIColor purpleColor] forState:UIControlStateNormal];
[predictButton addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:predictButton];

UIButton *button=[UIButton buttonWithType:UIButtonTypeCustom];

[button setTitle:@"Click" forState:UIControlStateNormal];

[button setTitleColor:[UIColor blackColor]forState:UIControlStateNormal];

button.frame=CGRectMake(self.view.frame.origin.x+10,self.view.frame.size.height/2, self.view.frame.size.width-20, self.view.frame.size.height-500);

 button.titleLabel.font=[UIFont fontWithName:@"Helvetica" size:20];

[button addTarget:selfaction:@selector(aMethod)forControlEvents:UIControlEventTouchUpInside];

[button setBackgroundColor:[UIColor grayColor]];

[self.view addSubview:button];

对于Swift 2.0:

let btnObject : UIButton  = UIButton() 
btnObject.frame = CGRect(x: 8, y: 89, width: 70, height: 22)

btnObject.titleLabel?.font = UIFont(name: "Helvetica Neue", size: 13)
btnObject.titleLabel?.textColor = UIColor.whiteColor()
btnObject.backgroundColor = UIColor(red: 189/255, green: 176/255, blue: 0/255, alpha: 1)
btnObject.titleLabel?.textAlignment = NSTextAlignment.Center
btnObject.addTarget(self, action: "btnbtnObjectClick:", forControlEvents: UIControlEvents.TouchUpInside)
subView.addSubview(btnObject)

UIButton *custombutton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[custombutton addTarget:self
                 action:@selector(aMethod:)
       forControlEvents:UIControlEventTouchUpInside];
[custombutton setTitle:@"Click" forState:UIControlStateNormal];
custombutton.frame = CGRectMake(80.0, 110.0, 160.0, 40.0);
custombutton.titleLabel.textColor = [UIColor colorWithRed: 2.0f/255.0f green: 155.0f/255.0f blue: 213.0f/255.0f  alpha:1];
 [custombutton setImage:[UIImage imageNamed:@"hh.png"] forState:UIControlStateNormal];
 [view addSubview:custombutton];

从Swift 3开始，语法有了一些变化。

以下是如何创建Swift 3的基本按钮:

    let button = UIButton(type: UIButtonType.system) as UIButton
    button.frame = CGRect(x: 100, y: 100, width: 100, height: 50)
    button.backgroundColor = UIColor.green
    button.setTitle("Example Button", for: UIControlState.normal)
    self.view.addSubview(button)

以下是Swift自以前版本以来所做的更改:

let button = UIButton(type: UIButtonType.System) as UIButton

// system no longer capitalised

button.frame = CGRectMake(100, 100, 100, 50)

// CGRectMake has been removed as of Swift 3

button.backgroundColor = UIColor.greenColor()

// greenColor replaced with green

button.setTitle("Example Button", forState: UIControlState.Normal)

// normal is no longer capitalised

self.view.addSubview(button)