关于侧滑
- 方法1（一行代码搞定）
self.interactivePopGestureRecognizer.delegate = nil;
- 方法2 （不推荐使用太麻烦）
-(void)setGestrue{
// 获取系统自带滑动手势的target对象
id target = self.interactivePopGestureRecognizer.delegate;
// 创建全屏滑动手势，调用系统自带滑动手势的target的action方法
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:target action:@selector(handleNavigationTransition:)];
// 设置手势代理，拦截手势触发
pan.delegate = self;
// 给导航控制器的view添加全屏滑动手势
[self.view addGestureRecognizer:pan];
// 禁止使用系统自带的滑动手势
self.interactivePopGestureRecognizer.enabled = NO;
}
// 什么时候调用：每次触发手势之前都会询问下代理，是否触发。
// 作用：拦截手势触发
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
// 注意：只有非根控制器才有滑动返回功能，根控制器没有。
// 判断导航控制器是否只有一个子控制器，如果只有一个子控制器，肯定是根控制器
if (self.childViewControllers.count == 1) {
// 表示用户在根控制器界面，就不需要触发滑动手势，
return NO;
}
return YES;
}
关于系统的一些方法
/**
* 可以在这个方法中拦截所有push进来的控制器
*/
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
if (self.childViewControllers.count > 0) { // 如果push进来的不是第一个控制器
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:@"返回" forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"navigationButtonReturn"] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"navigationButtonReturnClick"] forState:UIControlStateHighlighted];
button.size = CGSizeMake(70, 30);
// 让按钮内部的所有内容左对齐
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
// [button sizeToFit];
// 让按钮的内容往左边偏移10
button.contentEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
[button addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
// 修改导航栏左边的item
viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
// 隐藏tabbar
viewController.hidesBottomBarWhenPushed = YES;
}
// 这句super的push要放在后面, 让viewController可以覆盖上面设置的leftBarButtonItem
[super pushViewController:viewController animated:animated];
}
第一次使用这个类的时候会调用一次(可以做一些初始化的操作)
+ (void)initialize
{
// 当导航栏用在XMGNavigationController中, appearance设置才会生效
// UINavigationBar *bar = [UINavigationBar appearanceWhenContainedIn:[self class], nil];
UINavigationBar *bar = [UINavigationBar appearance];
[bar setBackgroundImage:[UIImage imageNamed:@"navigationbarBackgroundWhite"] forBarMetrics:UIBarMetricsDefault];
[bar setTitleTextAttributes:@{NSFontAttributeName : [UIFont boldSystemFontOfSize:20]}];
// 设置item
UIBarButtonItem *item = [UIBarButtonItem appearance];
// UIControlStateNormal
NSMutableDictionary *itemAttrs = [NSMutableDictionary dictionary];
itemAttrs[NSForegroundColorAttributeName] = [UIColor blackColor];
itemAttrs[NSFontAttributeName] = [UIFont systemFontOfSize:17];
[item setTitleTextAttributes:itemAttrs forState:UIControlStateNormal];
// UIControlStateDisabled
NSMutableDictionary *itemDisabledAttrs = [NSMutableDictionary dictionary];
itemDisabledAttrs[NSForegroundColorAttributeName] = [UIColor lightGrayColor];
[item setTitleTextAttributes:itemDisabledAttrs forState:UIControlStateDisabled];
}
