iOS 导航栏view创建

一. 思路

给ViewController创建一个分类，里面放导航栏view的创建方法
如果需要使用button，button的点击使用block来解决

二. 代码

1. 首先需要一个可以使用block处理点击事件的button，参考这里

2. 然后给ViewController创建一个分类，并在里面实现代码

复制代码

- (UIView *)createNavigationItemTitleViewWithTitle:(NSString *)title{
    UILabel *label = [[UILabel alloc] init];
    label.text = title;
    label.font = ISFont_17;
    label.textColor = [UIColor whiteColor];
    CGSize labelSize = [label.text sizeWithAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:17], NSFontAttributeName, nil]];
    label.frame = CGRectMake(0, 0, labelSize.width, labelSize.height);
    return label;
}

- (UIBarButtonItem *)createLeftBarButtonItemWithImage:(UIImage *)leftBarImage touch:(void(^)(UIButton *button))touchBlock{
    BlockButton * leftButton = [BlockButton buttonWithType:UIButtonTypeCustom];
    leftButton.frame = CGRectMake(0, 0, 20, 20);
    [leftButton setImage:leftBarImage forState:UIControlStateNormal];
    
    [leftButton addTapBlock:^(UIButton *button) {
        touchBlock(button);
    }];
    
    return [[UIBarButtonItem alloc] initWithCustomView:leftButton];
}

3. 在需要的位置调用即可

复制代码

//设置vc标题
self.navigationItem.titleView = [self createNavigationItemTitleViewWithTitle:self.labelInfo.szLabelName];
//设置返回按钮
self.navigationController.interactivePopGestureRecognizer.delegate = (id)self;
    __weak typeof(self) weakSelf = self;
    self.navigationItem.leftBarButtonItem = [self createLeftBarButtonItemWithImage:[UIImage imageNamed:@"backbutton"] touch:^(UIButton *button) {
       dispatch_async(dispatch_get_main_queue(), ^{
           [weakSelf.navigationController popViewControllerAnimated:YES];
       });
    }];