解决 MMDrawerController 滑动侧抽屉失效 在首页有UIScrollView的情况下

前提准备:
- 集成一个MMDrawerController
- 重现这种状况

    /* 以下为集成一个MMDrawerController */    HomeViewController *home = [[HomeViewController alloc] init];    // 使用MMDrawerController    LeftMenuViewController *leftVC = [[LeftMenuViewController alloc] init];    self.drawerController = [[MMDrawerController alloc] initWithCenterViewController:home leftDrawerViewController:leftVC];    // 展开宽度    _drawerController.maximumLeftDrawerWidth = SRN_WIDTH * 0.8;    // 打开手势    [_drawerController setOpenDrawerGestureModeMask:MMOpenDrawerGestureModeAll];    [_drawerController setCloseDrawerGestureModeMask:MMCloseDrawerGestureModeAll];    self.window.rootViewController = _drawerController;

接下来添加三个控制器的View到主控器上

    UIScrollView *view = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, SRN_WIDTH, SRN_HEIGHT - HEIGHT)];    view.contentSize = CGSizeMake(SRN_WIDTH * 3, 0);    // 去掉滚动条    view.showsVerticalScrollIndicator = NO;    view.showsHorizontalScrollIndicator = NO;    // 设置分页    view.pagingEnabled = YES;    // 设置代理    view.delegate = self;    // 去掉弹簧效果    view.bounces = NO;    CGFloat height = SRN_HEIGHT - 49;    // 添加子视图    MainViewController *main = [[MainViewController alloc] init];    main.view.frame = CGRectMake(0, 0, SRN_WIDTH, SRN_HEIGHT - HEIGHT);    main.view.height = height;    [self addChildViewController:main];    [view addSubview:main.view];    BestHotViewController *hot = [[BestHotViewController alloc] init];    hot.view.frame = CGRectMake(0, 0, SRN_WIDTH, SRN_HEIGHT - HEIGHT);    hot.view.x = SRN_WIDTH;    hot.view.height = height;    [self addChildViewController:hot];    [view addSubview:hot.view];    CategoryViewController *cate = [[CategoryViewController alloc] init];    cate.view.frame = CGRectMake(0, 0, SRN_WIDTH, SRN_HEIGHT - HEIGHT);    cate.view.x = SRN_WIDTH * 2;    cate.view.height = height;    [self addChildViewController:cate];    [view addSubview:cate.view];    [self.view addSubview:view];    self.scrollView = view;

分析: MMDC 中也使用这个手势 UIPanGestureRecognizer, UIScrollView中手势拦截了 MMDC手势的生效.

解决办法:

@implementation XTScrollView- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{    if ([gestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]) {        UIPanGestureRecognizer *pan = (UIPanGestureRecognizer *)gestureRecognizer;        if ([pan translationInView:self].x > 0.0f && self.contentOffset.x == 0.0f) {            // 这里返回 NO            return NO;        }    }    return [super gestureRecognizerShouldBegin:gestureRecognizer];}@end

重新初始化ScrollView

    XTScrollView *view = [[XTScrollView alloc] initWithFrame:CGRectMake(0, 0, SRN_WIDTH, SRN_HEIGHT - HEIGHT)];

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