iOS_Obj_BaseFrameWork

#pragma mark - 设置tabbar上面的字 setTitleTextAttributes
- (void)setTabBarTitleAttributesStyle
{
 NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
 //通常字体大小
 attrs[NSFontAttributeName] = [UIFont systemFontOfSize:16];
 //通常字体颜色
 attrs[NSForegroundColorAttributeName] = [UIColor lightGrayColor];
 NSMutableDictionary *selectAttrs = [NSMutableDictionary dictionary];
 //选中字体大小
 selectAttrs[NSFontAttributeName] = [UIFont systemFontOfSize:16];
 //选中字体颜色
 selectAttrs[NSForegroundColorAttributeName] = [UIColor darkGrayColor];
 //UI_APPEARANCE_SELECTOR 外观
 UITabBarItem *item = [UITabBarItem appearance];
 //tabbar通常字体样式
 [item setTitleTextAttributes:attrs forState:UIControlStateNormal];
 //tabbar选中字体样式
 [item setTitleTextAttributes:selectAttrs forState:UIControlStateSelected];
}

#pragma mark - 导航子视图封装
- (void)setChildVC:(UIViewController *)ChildVC title:(NSString *)title image:(NSString *)image selectImgage:(NSString *)selectImage {
 //注意视图层级关系,最上边时UINavigationController,创建一个视图即给一个UINavigationController
 NPNavigationController *nav = [[NPNavigationController alloc] initWithRootViewController:ChildVC];
 //子视图显示在UITabbarController上显示的tabbar标题
 nav.tabBarItem.title = title;
 //子视图显示在UITabbarController上未选中tabbar的图片
 nav.tabBarItem.image = [UIImage imageNamed:image];
 //子视图显示在UITabbarController上选中tabbar的图片
 nav.tabBarItem.selectedImage = [UIImage imageNamed:selectImage];
 //子视图背景颜色
 nav.view.backgroundColor = [UIColor grayColor];
 //注意标题显示是子视图的标题,非UINavigationController
 ChildVC.navigationItem.title = title;
 //添加子视图
 [self addChildViewController:nav];
}

 - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
 //判断self.childViewControllers是不是拿到所有子控制器,self.childViewControllers.count为0时,只有子控制器,干掉返回按钮
 if (self.childViewControllers.count > 0) {
 //自定义返回按钮
 UIButton *returnBtn = [UIButton buttonWithType:UIButtonTypeCustom];
 //设置title:返回
 [returnBtn setTitle:@"返回" forState:UIControlStateNormal];
 //正常下image
 [returnBtn setImage:[UIImage imageNamed:@"black"] forState:UIControlStateNormal];
 //高亮下image
 [returnBtn setImage:[UIImage imageNamed:@"grat"] forState:UIControlStateHighlighted];
 //正常下title颜色
 [returnBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 //高亮下title颜色
 [returnBtn setTitleColor:[UIColor lightGrayColor] forState:UIControlStateHighlighted];
 //设置按钮位置大小,注意这里位置无效果
 [returnBtn setFrame:CGRectMake(0, 0, 70, 20)];
 //按钮内部对齐
 [returnBtn setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
 //设置图片内部位置
 [returnBtn setContentEdgeInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
 //添加点击事件
 [returnBtn addTarget:self action:@selector(returnBtnClick) forControlEvents:UIControlEventTouchUpInside];
 //当视图推送时隐藏tabbar
 viewController.hidesBottomBarWhenPushed = YES;
 //自定义push视图的leftBarButtonItem
 viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:returnBtn];
 }
 //子控制器通过这个方法推送视图
 [super pushViewController:viewController animated:animated];
}

/**
 *创建一个UIBarbuttonItem 类方法,这个方法是类方法创建一个按钮,传入的参数:image正常显示的图片,hightImage高亮情况下显示的图片,target用的对象,action点击的行为。
 */
+ (instancetype)itemWithImage:(NSString *)image hightImage:(NSString *)hightImage target:(id)target action:(SEL)action
{
 UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
 [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
 [btn setBackgroundImage:[UIImage imageNamed:hightImage] forState:UIControlStateNormal];
 //btnsize 是北京图片的大小
 CGSize btnsize = btn.currentBackgroundImage.size;
 //设置btn的frame
 [btn setFrame:CGRectMake(0, 0, btnsize.width, btnsize.height)];
 [btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
 return [[self alloc] initWithCustomView:btn];
}

- (void)viewDidDisappear:(BOOL)animated
{
 [super viewDidDisappear:animated];
 //代理置空,否则会闪退
 if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
 self.navigationController.interactivePopGestureRecognizer.delegate = nil;
 }
 
}
- (void)viewDidAppear:(BOOL)animated
{
 [super viewDidAppear:animated];
 //开启iOS7的滑动返回效果
 if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
 //只有在二级页面生效
 if ([self.navigationController.viewControllers count] == 2) {
 self.navigationController.interactivePopGestureRecognizer.delegate = (id)self;
 }
 }
}