如何以編程方式創建基本UIButton？我如何創建一個基本的UIButton以編程的方式？例如，在我的視圖控制器中，當執行viewDidLoad方法三UIButtonS將動態創建，并設置其布局或屬性。
3 回答
米脂
TA貢獻1836條經驗 獲得超3個贊
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];[button addTarget:self action:@selector(aMethod:) forControlEvents:UIControlEventTouchUpInside];[button setTitle:@"Show View" forState:UIControlStateNormal]; button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);[view addSubview:button];
九州編程
TA貢獻1785條經驗 獲得超4個贊
- (void)viewDidLoad {
[super viewDidLoad];
[self addMyButton]; // Call add button method on view load}- (void)addMyButton{
// Method for creating button, with background image and other properties
UIButton *playButton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain];
playButton.frame = CGRectMake(110.0, 360.0, 100.0, 30.0);
[playButton setTitle:@"Play" forState:UIControlStateNormal];
playButton.backgroundColor = [UIColor clearColor];
[playButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal ];
UIImage *buttonImageNormal = [UIImage imageNamed:@"blueButton.png"];
UIImage *strechableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[playButton setBackgroundImage:strechableButtonImageNormal forState:UIControlStateNormal];
UIImage *buttonImagePressed = [UIImage imageNamed:@"whiteButton.png"];
UIImage *strechableButtonImagePressed = [buttonImagePressed stretchableImageWithLeftCapWidth:12 topCapHeight:0];
[playButton setBackgroundImage:strechableButtonImagePressed forState:UIControlStateHighlighted];
[playButton addTarget:self action:@selector(playAction:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:playButton]; }
瀟瀟雨雨
TA貢獻1833條經驗 獲得超4個贊
目標-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)}SWIFT 3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)")}斯威夫特
import SwiftUIstruct 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 DEBUGstruct ContentView_Previews : PreviewProvider {
static var previews: some View {
ContentView()
}}#endif- 3 回答
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