我们发现UILabel不在为我们提供长按弹出复制等操作了, 我们来继承UILabel自己写一个带复制功能的UILabel。
代码：
#import "CopyLabel.h"
@implementation CopyLabel
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
[self pressAction];
}
return self;
}
// 初始化设置
- (void)pressAction {
self.userInteractionEnabled = YES;
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];
longPress.minimumPressDuration = 0.25;
[self addGestureRecognizer:longPress];
}
// 使label能够成为响应事件
- (BOOL)canBecomeFirstResponder {
return YES;
}
// 自定义方法时才显示对就选项菜单，即屏蔽系统选项菜单
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
if (action == @selector(customCopy:)){
return YES;
}
return NO;
}
- (void)customCopy:(id)sender {
UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
pasteboard.string = self.text;
}
- (void)longPressAction:(UIGestureRecognizer *)recognizer {
if (recognizer.state == UIGestureRecognizerStateBegan) {
[self becomeFirstResponder];
UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"拷贝" action:@selector(customCopy:)];
UIMenuController *menuController = [UIMenuController sharedMenuController];
menuController.menuItems = [NSArray arrayWithObjects:copyItem, nil];
[menuController setTargetRect:self.frame inView:self.superview];
[menuController setMenuVisible:YES animated:YES];
}
}
@end
使用：
- (void)viewDidLoad {
[super viewDidLoad];
CopyLabel *copy = [[CopyLabel alloc] initWithFrame:CGRectMake(, , [UIScreen mainScreen].bounds.size.width,)];
copy.text = @"一个带复制功能的Label";
copy.textAlignment = NSTextAlignmentCenter;
copy.backgroundColor = [UIColor yellowColor];
copy.textColor = [UIColor redColor];
copy.font = [UIFont boldSystemFontOfSize:];
[self.view addSubview:copy];
}