我如何创建一个基本的UIButton编程?例如,在我的视图控制器中,当执行viewDidLoad方法时,将动态创建三个uibutton,并设置其布局或属性。
当前回答
- (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];
}
其他回答
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];
objective - c
// Create the Button with RoundedRect type
UIButton *mybutton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
// instend of "Click Me" you can write your own message/Label
[mybutton setTitle:@"Click Me" forState:UIControlStateNormal];
// create the Rectangle Frame with specified size
mybutton.frame = CGRectMake(10, 10, 300, 140); // x,y,width,height [self.view addSubview:mybutton];// add button to your view.
斯威夫特
let button = UIButton(type: UIButtonType.System) as UIButton
button.frame = CGRectMake(100, 100, 100, 50)
button.backgroundColor = UIColor.greenColor()
button.setTitle("Test Button", forState: UIControlState.Normal)
self.view.addSubview(button)
试试这个:
首先把它写在你的。h文件的viewcontroller
UIButton *btn;
现在把这个写在viewcontrollers viewDidLoad的。m文件中。
btn=[[UIButton alloc]initWithFrame:CGRectMake(50, 20, 30, 30)];
[btn setBackgroundColor:[UIColor orangeColor]];
[btn setTitle: @"My Button" forState:UIControlStateNormal];
[btn setTitleColor: [UIColor blueVolor] forState:UIControlStateNormal];
[btn.layer setBorderWidth:1.0f];
[btn.layer setBorderColor:[UIColor BlueVolor].CGColor];
//adding action programatically
[btn addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
在视图控制器的。m文件中写入viewDidLoad方法的外部
- (IBAction)btnClicked:(id)sender
{
//Write a code you want to execute on buttons click event
}
UIButton *saveLibrary=[UIButton buttonWithType:UIButtonTypeCustom];
[saveLibrary setTitle:@"Library" forState:UIControlStateNormal];
[saveLibrary setBackgroundColor:[UIColor redColor]];
[saveLibrary addTarget:self
action:@selector(saveOnGalleryButtonIsPressed) forControlEvents:UIControlEventTouchUpInside];
[saveLibrary setImage:[UIImage imageWithContentsOfFile:[[[NSBundle mainBundle] bundlePath] stringByAppendingString:@"/library225.png"]]forState:UIControlStateNormal];
saveLibrary.frame=CGRectMake(323, 15, 75, 75);
[self.view addSubview:saveLibrary];
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];
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