//联系人:石虎  QQ: 1224614774昵称:嗡嘛呢叭咪哄

UITabBarController做QQ侧滑菜单效果：

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