ios 手动设置 UIButton 状态
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Manually setting a UIButton state
提问by acreek
I UIButtonusing + buttonWithType:
我UIButton使用 +buttonWithType:
What I need to figure out is how to manually change the button state. There are times when I need it to be set to "disabled."
我需要弄清楚的是如何手动更改按钮状态。有时我需要将其设置为“禁用”。
I read through the UIButtondocumentation but I cannot seem to find anything about manually setting a button state.
我通读了UIButton文档，但似乎找不到有关手动设置按钮状态的任何信息。
Any thoughts would be greatly appreciated.
任何想法将不胜感激。
回答by Ben Gottlieb
Did you try button.enabled = NO;?
你试了button.enabled = NO;吗？
Swift 5.0
斯威夫特 5.0
button.isEnabled = false
回答by roberthuttinger
there are also the states:
还有以下国家：
button.highlighted = NO;
button.selected = NO;
回答by Zouhair Sassi
Objective C:
目标 C：
button.selected = Yes;
button.highlighted = NO;
button.enabled = Yes;
Swift 4:
斯威夫特 4：
button.isSelected = true
button.isEnabled = true
Also you can use:(swift 4)
你也可以使用:(swift 4)
if (button.state == .selected) {
//do something
}
回答by Birju
You can manually set state of UIButton.
您可以手动设置 UIButton 的状态。
UIButton *btnCheck=[UIButton buttonWithType:UIButtonTypeCustom];
if(btncheck isselected])
{
btncheck.selected=FALSE;
}
else
{
btncheck.selected=TRUE;
}
You can do operation on UIButton as per your requirement like perform some action when UIButton is selected and while not selected.
您可以根据您的要求对 UIButton 进行操作，例如在选择 UIButton 和未选择 UIButton 时执行某些操作。
Hope this will help you....
希望能帮到你....
回答by Firas Shrourou
for Swift 3 you can use
对于 Swift 3，您可以使用
button.isSelected = true
button.isSelected = true
回答by Lorne K
For anyone arriving here looking to change the 'state' of the button (as opposed to 'enabled'). Stephen is correct "This attribute is read only—there is no corresponding setter method."
对于到达这里希望更改按钮“状态”（而不是“启用”）的任何人。Stephen 是正确的“这个属性是只读的——没有相应的 setter 方法。”
What you really want to set is the state of the buttons cell.
您真正想要设置的是按钮单元格的状态。
[[myNSButtonOutlet cell] setState: NSOnState]; //Options NSOnState, NSOffState, NSMixedState
