UITextField如何禁用粘贴? [英] UITextField how to disable the paste?
本文介绍了UITextField如何禁用粘贴?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
UITextField如何禁用粘贴?
UITextField how to disable the paste?
推荐答案
覆盖 canPerformAction:withSender:
为您不想允许的操作返回否
的方法:
overrides the canPerformAction:withSender:
method to return NO
for actions that you don't want to allow:
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
if (action == @selector(paste:))
return NO;
if (action == @selector(select:))
return NO;
if (action == @selector(selectAll:))
return NO;
return [super canPerformAction:action withSender:sender];
}
在上面的代码中你只需要写粘贴
In Above Code you need to write only for paste
另一种方式
-(BOOL)canPerformAction:(SEL)action withSender:(id)sender {
UIMenuController *menuController = [UIMenuController sharedMenuController];
if (menuController) {
[UIMenuController sharedMenuController].menuVisible = NO;
}
return NO;
}
同时检查此链接
已编辑
在iOS 7中,你可以这样做,
In iOS 7, you can do such like,,
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
[[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO];
}];
return [super canPerformAction:action withSender:sender];
}
对于Swift用户
override public func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
if action == #selector(copy(_:)) || action == #selector(paste(_:)) {
return false
}
return true
}
如果要在TEXTFIELD上打开日期选择器或选择器视图,请单击下面的代码工作。
在您的课程中添加以下两种方法。
Add below two methods in your class.
//Hide Menu View
override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
if YOURTEXTFIELD.isFirstResponder {
DispatchQueue.main.async(execute: {
(sender as? UIMenuController)?.setMenuVisible(false, animated: false)
})
return false
}
return super.canPerformAction(action, withSender: sender)
}
//必须实施
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
return false
}
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