objective - c

UIButton *but= [UIButton buttonWithType:UIButtonTypeRoundedRect];
[but addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
 [but setFrame:CGRectMake(52, 252, 215, 40)];
[but setTitle:@"Login" forState:UIControlStateNormal];
[but setExclusiveTouch:YES];

 // if you like to add backgroundImage else no need
   [but setbackgroundImage:[UIImage imageNamed:@"XXX.png"] forState:UIControlStateNormal];

[self.view addSubview:but];

-(void) buttonClicked:(UIButton*)sender
 {
NSLog(@"you clicked on button %@", sender.tag);
 }

斯威夫特

    let myButton = UIButton() // if you want to set the type use like UIButton(type: .RoundedRect) or UIButton(type: .Custom)
    myButton.setTitle("Hai Touch Me", forState: .Normal)
    myButton.setTitleColor(UIColor.blueColor(), forState: .Normal)
    myButton.frame = CGRectMake(15, 50, 300, 500)
    myButton.addTarget(self, action: "pressedAction:", forControlEvents: .TouchUpInside)

    self.view.addSubview( myButton)


func pressedAction(sender: UIButton!) {
   // do your stuff here 
  NSLog("you clicked on button %@", sender.tag)
}

Swift3及以上

  let myButton = UIButton() // if you want to set the type use like UIButton(type: .RoundedRect) or UIButton(type: .Custom)
    myButton.setTitle("Hi, Click me", for: .normal)
    myButton.setTitleColor(UIColor.blue, for: .normal)
    myButton.frame = CGRect(x: 15, y: 50, width: 300, height: 500)

    myButton.addTarget(self, action: #selector(pressedAction(_:)), for: .touchUpInside)
    self.view.addSubview( myButton)



func pressedAction(_ sender: UIButton) {
   // do your stuff here 
  print("you clicked on button \(sender.tag)")
}

迅捷用户界面

例如，你可以从SwiftUI开发者门户网站获得一步一步的实现

import SwiftUI

struct ContentView : View {
    var body: some View {
        VStack {

            Text("Target Color Black")
             Button(action: { 
                 /* handle button action here */ })
            {
         Text("your Button Name")
          .color(.white)
                        .padding(10)
                        .background(Color.blue)
                        .cornerRadius(5)
                        .shadow(radius: 5)
                        .clipShape(RoundedRectangle(cornerRadius: 5))
     }


        }
    }
}

#if DEBUG
struct ContentView_Previews : PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
#endif

拜托，都2014年了!为什么代码块评估分配还没有被使用，因为趋势表明这是未来的趋势!

UIButton* button = ({
    //initialize button with frame
    UIButton* button = [[UIButton alloc] initWithFrame:({
        CGRect frame = CGRectMake(10.0, 10.0, 200.0, 75.0);
        frame;
    })];
    //set button background color
    [button setBackgroundColor:({
        UIColor* color = [UIColor colorWithRed:1.0 green:1.0 blue:0.0 alpha:1.0];
        color;
    })];
    //set button title for state
    [button setTitle:({
        NSString* string = [NSString stringWithFormat:@"title words"];
        string;
    }) forState:({
        UIControlState state = UIControlStateNormal;
        state;
    })];
    //set selector
    [button addTarget:self action:({
        SEL select = @selector(method:);
        select;
    }) forControlEvents:({
        UIControlEvents event = UIControlEventTouchUpInside;
        event;
    })];
    //return button
    button;
});
[self.view addSubview:button];

哇!

或者确切的结果可以这样完成:

UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(10.0, 10.0, 200.0, 75.0)];
[button setBackgroundColor:[UIColor colorWithRed:1.0 green:1.0 blue:0.0 alpha:1.0]];
[button setTitle:@"title words" forState:UIControlStateNormal];
[button addTarget:self action:@selector(method:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self 
           action:@selector(aMethod:)
 forControlEvents:UIControlEventTouchUpInside];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(10.0, 100.0, 300.0, 20.0);
[self.view addSubview:button];

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。

你可以通过这段代码创建按钮。

 UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
 [btn addTarget:self action:@selector(btnAction) forControlEvents:UIControlEventTouchDragInside];
 [btn setTitle:@"click button" forState:UIControlStateNormal];
  btn.frame = CGRectMake(50, 100, 80, 40);
  [self.view addSubview:btn];

下面是按钮动作方法

 -(void)btnAction
 {
   NSLog(@"button clicked");
 }

Swift 3版本应该是:

let myButton:UIButton = {
    let myButton = UIButton() // If you want to set the type use like
                              // UIButton(type: .RoundedRect) or
                              // UIButton(type: .Custom)
    myButton.setTitle("Hai Touch Me", for: .normal)
    myButton.setTitleColor(UIColor.blue, for: .normal)
    myButton.frame = CGRect(x: 20, y: 20, width: 100, height: 40)

    myButton.addTarget(self, action: #selector(ViewController.pressedAction(_:)), for: .touchUpInside)
    self.view.addSubview(myButton)

    return myButton
}()