26手势_UIMenuController

一、手势
项目：0524GestureRecognizer

//总共有7种手势：点击、平移、清扫、捏合、边缘化入、旋转、长按
    //所有手势的顶级父类：UIGestureRecognizer

二、UIMenuController
（一）项目：0524GestureRecognizer

- (void)viewDidLoad {
    [super viewDidLoad];
 //longPress 长按
    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];
    [view addGestureRecognizer:longPress];
}
#pragma mark 长按事件
- (void)longPressAction:(UILongPressGestureRecognizer *)gesture{
    //长按，和UIMenuController 弹出的copy粘贴进行组合使用
    UIMenuController *menuCtr = [UIMenuController sharedMenuController];
    UIMenuItem *item = [[UIMenuItem alloc]initWithTitle:@"自定义" action:@selector(action:)];
    menuCtr.menuItems = @[item];
    CGPoint point = [gesture locationInView:gesture.view];
    [menuCtr setTargetRect:CGRectMake(point.x, point.y, 0, 0) inView:gesture.view];
    [menuCtr setMenuVisible:YES animated:YES];
}
#pragma mark 如果想让menuCtr弹出，需要实现以下几个方法
- (BOOL)canBecomeFirstResponder{
    return YES;
}
- (void)cut:(id)sender{
    
}
- (void)action:(UIMenuItem *)item{
    
}

（二）项目0527UITextView

#pragma mark （6）UITextView自定选择文字后的菜单
- (void)createSelectedStringMenu{
    UIMenuItem *menuItem = [[UIMenuItem alloc]initWithTitle:@"分享到新浪微博" action:@selector(changeColor:)];
    UIMenuController *menu = [UIMenuController sharedMenuController];
    [menu setMenuItems:[NSArray arrayWithObject:menuItem]];
}
- (void)changeColor:(UIMenuItem *)sender{
    NSLog(@"改变颜色");
}
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender{
    if (action == @selector(changeColor:)) {
        if (self.textView.selectedRange.length>0) {
            return YES;
        }
    }
    return NO;
}