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
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");
}
其他回答
试一试……
UIButton *finalPriceBtn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
finalPriceBtn.frame=CGRectMake(260, 25, 45, 15);
[finalPriceBtn addTarget:self action:@selector(goBtnClk:) forControlEvents:UIControlEventTouchUpInside];
finalPriceBtn.titleLabel.font=[UIFont systemFontOfSize:12];
[finalPriceBtn setTitle:[NSString stringWithFormat:@"$%.2f",tempVal] forState:UIControlStateNormal];
finalPriceBtn.titleLabel.textColor = [UIColor colorWithRed: 2.0f/255.0f green: 155.0f/255.0f blue: 213.0f/255.0f alpha:1];
finalPriceBtn.titleLabel.textAlignment=UITextAlignmentLeft;
[imageView addSubview:finalPriceBtn];
希望我能帮上忙。
如果愿意,可以将创建者实例放入循环中,并从数组中动态添加名称。
UIButton * tmpBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[tmpBtn addTarget:self action:@selector(clearCart:) forControlEvents:UIControlEventTouchUpInside];
tmpBtn.tag = k;
tmpBtn.frame = CGRectMake(45, 0, 15, 15);
[tmpBtn setBackgroundImage:[UIImage imageNamed:@"CloseButton.png"] forState:UIControlStateNormal];
[self.view addSubview:tmpBtn];
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 *addProject = [UIButton buttonWithType: UIButtonTypeRoundedRect];
addProject.frame = CGRectMake(210, 285, 100, 18);
[addProject setTitle:@"Show View" forState:UIControlStateNormal];
[addProject addTarget:self action:@selector(addProjectPressed:) forControlEvents:UIControlEventTouchUpInside];
[_scrollView addSubview:addProject];
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