这篇文章给大家分享的是有关iOS中如何仿QQ实现侧滑菜单功能的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。
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首先要了解UITabBarController的层级结构：
UITabBarController加载的其它UIViewController的View都是被添加在UITransitionView上（这是一个私有API），UITransitionView在self.view的0层，UITabBar在的第一层。
所以我的思路是这样的：
UITransitionView与UITabBar转移到一个新的View1上去，作为滑动的部分；
在View1与self.view之间再添加一个View2，作为菜单的容器；
给View1添加相应的手势响应；
代码：
#import@protocol SlideTab_VC_TCVDelegate @optional -(void)didOpenMenu:(UIView*)menu; -(void)didCloseMenu:(UIView*)menu; @end @interface SlideTab_VC : UITabBarController @property(strong, nonatomic)UIView *mMenuV; @property(weak, nonatomic)id mDelegate; -(void)openMenu; -(void)closeMenu; @end #import "SlideTab_VC.h" #define DEVICE_W [UIScreen mainScreen].bounds.size.width @interface SlideTab_VC () { CGFloat _centerMaxX; } @property(strong, nonatomic)UIView *mTransitionView; @property(strong, nonatomic)UITapGestureRecognizer *mTapGester; @property(assign, nonatomic)BOOL mMenuIsOpen; @property(strong, nonatomic)UITabBar *mTabBar; @end @implementation SlideTab_VC - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.view.backgroundColor = [UIColor purpleColor]; _mMenuIsOpen = NO; _centerMaxX = DEVICE_W*3/2-80.0f; [self initMTransitionView]; [self addGestureForMTransitionView]; } #pragma mark 菜单懒加载 -(void)setMMenuV:(UIView *)mMenuV{ if (mMenuV!=nil) { _mMenuV = mMenuV; [self.view insertSubview:_mMenuV atIndex:0]; } } #pragma mark 打开菜单 -(void)openMenu{ CGPoint center = self.mTransitionView.center; center.x = _centerMaxX; [UIView animateWithDuration:0.15f animations:^{ self.mTransitionView.center = center; if (_mDelegate != nil&& [_mDelegate respondsToSelector:@selector(didOpenMenu:)]) { [_mDelegate didOpenMenu:_mMenuV]; } }]; [self mTransitionSubViewsEnable:NO]; } #pragma mark 关闭菜单 -(void)closeMenu{ CGPoint center = self.mTransitionView.center; center.x = DEVICE_W/2; [UIView animateWithDuration:0.15f animations:^{ self.mTransitionView.center = center; } completion:^(BOOL finished) { [self mTransitionSubViewsEnable:YES]; if (_mDelegate != nil&& [_mDelegate respondsToSelector:@selector(didCloseMenu:)]) { [_mDelegate didCloseMenu:_mMenuV]; } }]; } #pragma mark Transition用户交互使能 -(void)mTransitionSubViewsEnable:(BOOL)enable{ for (UIView *tmp in self.mTransitionView.subviews) { tmp.userInteractionEnabled = enable; } if (enable) { [self.mTransitionView removeGestureRecognizer:_mTapGester]; }else{ [self.mTransitionView addGestureRecognizer:_mTapGester]; } } #pragma mark 配置mTransitionView -(void)initMTransitionView{ for (UIView *tmp in self.view.subviews) { [tmp removeFromSuperview]; [self.mTransitionView addSubview:tmp]; } [self.view addSubview:self.mTransitionView]; } #pragma mark 拖动手势动作 -(void)panAction:(UIPanGestureRecognizer*)pan{ CGPoint location = [pan translationInView:pan.view.superview]; CGPoint center = self.mTransitionView.center; if (pan.state==UIGestureRecognizerStateEnded) { if (center.x<_centerMaxX*0.5+DEVICE_W*0.25){ [self closeMenu]; }else{ [self openMenu]; } }else if(pan.state==UIGestureRecognizerStateChanged){ if (location.x<0) {//向左滑 center.x = center.x+location.x<=DEVICE_W/2? DEVICE_W/2 : center.x+location.x; }else{ center.x = center.x+location.x>=_centerMaxX? _centerMaxX : center.x+location.x; } self.mTransitionView.center = center; [pan setTranslation:CGPointMake(0, 0) inView:pan.view.superview]; } } #pragma mark 添加手势 -(void)addGestureForMTransitionView{ UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panAction:)]; [_mTransitionView addGestureRecognizer:pan]; _mTapGester = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction)]; } #pragma mark--懒加载 -(UIView *)mTransitionView{ if (_mTransitionView==nil) { _mTransitionView = [[UIView alloc]initWithFrame:self.view.bounds]; } return _mTransitionView; } -(void)tapAction{ CGFloat x = _mTransitionView.center.x; if (x>=_centerMaxX) { [self closeMenu]; } } @end
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