iOS 动态加入button

时间:2023-03-09 22:24:41
iOS 动态加入button

按现有的button之后自己主动创造一个新的button,并为新button加入事件,因此,当您单击弹出提示框。

于viewcontroller.h添加

@property (weak,
nonatomic) IBOutlet
UIButton *addbutton;

为这个按钮加入响应事件addbutton

在viewcontroller.m中加入


- (IBAction)addButton:(id)sender {

//动态加入一个button

CGRect frame = CGRectMake(0,
0, 300,
50);

UIButton *button = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

button.frame = frame;

[button setTitle:@"新加入的动态按钮"
forState: UIControlStateNormal];

button.backgroundColor = [UIColor redColor];

button.tag =
2000;

[button addTarget:self
action:@selector(buttonClicked:)
forControlEvents:UIControlEventTouchUpInside];

[self.view
addSubview:button];

}

//这个是新button的响应函数

-(IBAction) buttonClicked:(id)sender {

UIAlertView *alert = [[UIAlertView
alloc]
initWithTitle:@"提示"

message:@"单击了动态button!

"

delegate:self

cancelButtonTitle:@"确定"

otherButtonTitles:nil];

[alert
show];

}

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