iOS-UIMenuController的使用
不知你有没有发现，在你的微信朋友中，长按一段文字（正文或者评论），会弹出这样子的玩意：
要想在你的view或者viewController中实现长按弹出菜单栏你必须要调用becomeFirstResponder方法，其次要实现canBecomeFirstResponder方法，并返回YES.
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,strong)UILabel *label;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_label = [[UILabel alloc]initWithFrame:CGRectMake(60, 100, 200, 50)];
_label.text = @"我是一个label";
_label.textAlignment = NSTextAlignmentCenter;
_label.textColor = [UIColor blackColor];
[self.view addSubview:_label];
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
//
_label.userInteractionEnabled = YES;
//添加长按手势
[_label addGestureRecognizer:[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)]];
}
-(void)longPress:(UILongPressGestureRecognizer *)sender{
if (sender.state == UIGestureRecognizerStateBegan) {
[self.view becomeFirstResponder];
_label.backgroundColor = [UIColor lightGrayColor];
UIMenuController *menu = [UIMenuController sharedMenuController];
//复制
UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"复制" action:@selector(copyItemClicked:)];
//收藏
UIMenuItem *collectItem = [[UIMenuItem alloc] initWithTitle:@"收藏" action:@selector(collectItemClicked:)];
//举报
UIMenuItem *reportItem = [[UIMenuItem alloc] initWithTitle:@"举报" action:@selector(reportItemClicked:)];
menu.menuItems = @[copyItem,collectItem,reportItem];
[menu setMenuVisible:YES animated:YES];
[menu setTargetRect:_label.frame inView:self.view];
}
if (sender.state==UIGestureRecognizerStateEnded) {
_label.backgroundColor = [UIColor clearColor];
}
}
- (void)copyItemClicked:(UIMenuItem *)item
{
NSLog(@"复制");
}
- (void)collectItemClicked:(UIMenuItem *)item
{
NSLog(@"收藏");
}
- (void)reportItemClicked:(UIMenuItem *)item
{
NSLog(@"举报");
}
- (BOOL)canBecomeFirstResponder
{
return YES;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
