系统导航栏部分简单研究

来源：互联网发布：数据统计分析书籍编辑：程序博客网时间：2024/05/07 04:06

在研究一下导航栏的时候，想要只用系统的动画，因而发现了一些问题

无法使用系统返回手势

添加delegate

__weak typeof (self) weakSelf =self;

if ([selfrespondsToSelector:@selector(interactivePopGestureRecognizer)]) {

self.interactivePopGestureRecognizer.delegate = weakSelf;

}

-(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated

{

if ([selfrespondsToSelector:@selector(interactivePopGestureRecognizer)]) {

self.interactivePopGestureRecognizer.enabled = animated;

}

[superpushViewController:viewControlleranimated:animated];

}

导航栏添加照片：

[self.navigationBarsetBackgroundImage:[UIImageimageNamed:@"big4ads_banner02.png"]forBarMetrics:UIBarMetricsDefault];

一些ViewController手势冲突，添加delegate

self.navigationController.delegate=self;

- (void)navigationController:(UINavigationController *)navigationController

didShowViewController:(UIViewController *)viewController

animated:(BOOL)animated

{

if ([viewControllerisKindOfClass:self.class]) {

navigationController.interactivePopGestureRecognizer.enabled =NO;

}elseif ([navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {

navigationController.interactivePopGestureRecognizer.enabled =YES;

}

iOS 7以上系统修改title文字大小，颜色

[[UINavigationBarappearance] setTitleTextAttributes:[NSDictionarydictionaryWithObjectsAndKeys:[UIColorblackColor], NSForegroundColorAttributeName, [UIFontfontWithName:@ "HelveticaNeue-CondensedBlack"size:18.0],NSFontAttributeName, nil]];

导航栏UIBarButtonItem的修改

UIButton *clearButton = [[UIButtonalloc] initWithFrame:CGRectMake(0,0, 44,44)];

clearButton.tintColor =[UIColorblackColor];

UIImage *image =[UIImageimageNamed:@"delete"];

image=[image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];

[clearButton setImage:imageforState:UIControlStateNormal];

[clearButton addTarget:selfaction:@selector(removeAllMessages:)forControlEvents:UIControlEventTouchUpInside];

self.navigationItem.rightBarButtonItem = [[UIBarButtonItemalloc] initWithCustomView:clearButton];

[[UIBarButtonItem appearance]setTintColor:[UIColor blackColor]];

上传一张结构图用来研究修改

系统返回按钮的修改需要在上一层修改。

self.navigationItem.backBarButtonItem=back;

系统返回按钮title会使用上一层的title，如果title长度过长，会使用系统语言的“返回”。

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