mPaaS 10.1.68 H5容器中NavBar修改的问题

时间定位： 2021.4.1 愚人节快乐
最新版68的NavBar修改，与mPaaS文档中还是存在差异

自定义Plugin

1. 自定义Plugin 继承NBPluginBase

@interface H5Plugin4NavigationBar: NBPluginBase
@end

2. 监听事件

    [self.target addEventListener:kNBEvent_Scene_NavigationItem_Left_Back_Create_After
                     withListener:self
                       useCapture:NO];

3. 在对应事件中做处理

返回按钮

if ([kNBEvent_Scene_NavigationItem_Left_Back_Create_After isEqualToString:event.eventType]) {
        //MARK: 更改已创建LeftBarItem的样式
        
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
        [btn setFrame:CGRectMake(0, 0, 44, 44)];
        [btn setImage:[UIImage imageNamed:@"header-back"] forState:UIControlStateNormal];
        [btn setTitle:@"  " forState:UIControlStateNormal];
        [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        
        [btn addTarget:event.context.currentViewController action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
        UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
        NSArray *leftBarButtonItems = event.context.currentViewController.navigationItem.leftBarButtonItems;
        NSMutableArray *arr = [NSMutableArray arrayWithArray:leftBarButtonItems];
        [arr enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(UIBarButtonItem*  _Nonnull item, NSUInteger idx, BOOL * _Nonnull stop) {
            if ([item isKindOfClass:[AUBarButtonItem class]]) {
                [arr removeObject:item];
                [arr addObject:backItem];
                *stop = YES;
            }
        }];
        [event.context.currentViewController.navigationItem setLeftBarButtonItems:arr];
        [event preventDefault];
    }

关闭按钮，关闭按钮修改方式应该和返回一样，这边只是屏蔽关闭按钮

    if ([kNBEvent_Scene_NavigationItem_Left_Close_Create_Before isEqualToString:event.eventType]) {
        //MARK: 更改已创建LeftBarItem的样式
        NBNavigationItemEvent *e = (id)event;
        e.customView = nil;
        [e preventDefault];
    }

标题栏

文档中是这样的

if ([kNBEvent_Scene_TitleView_Create_Before isEqualToString:event.eventType]) {
          // 重写 TitleView 的样式
          NBNavigationTitleViewEvent *e = (id)event;
          [e preventDefault];
      }else if ([kNBEvent_Scene_TitleView_Create_After isEqualToString:event.eventType]) {
          // 更改已创建 TitleView 的样式
          NBNavigationTitleViewEvent *e = (id)event;
          [[e.titleView mainTitleLabel] setFont:[UIFont systemFontOfSize:16]];
          [[e.titleView mainTitleLabel] setTextColor:[UIColor greenColor]];
          [e.titleView mainTitleLabel].lineBreakMode = NSLineBreakByTruncatingMiddle;
      }

实际测试应该是下面这个

    id <NBNavigationTitleViewProtocol> titleView = (NBNavigationTitleView *)self.navigationItem.titleView;
        if ([titleView mainTitleLabel]) {
        //这边增加了一个判断，防止重写titleView后，mainTitleLabel丢失
            [[titleView mainTitleLabel] setFont:[UIFont systemFontOfSize:16]];
            [[titleView mainTitleLabel] setTextColor:titleColor];
        }