//
|
// Copyright © 2019 jm. All rights reserved.
|
//
|
|
#import "DHNavBarPresenter.h"
|
#import <Masonry/Masonry.h>
|
#import <LCBaseModule/LCBaseModule.h>
|
#import "DHContainerVC.h"
|
@implementation DHNavBarPresenter
|
{
|
UIView *_lineView;
|
UIView *_shadowImageView;
|
}
|
|
- (instancetype)init {
|
if (self = [super init]) {
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
selector:@selector(handleDeviceOrientationDidChange:)
|
name:UIDeviceOrientationDidChangeNotification
|
object:nil];
|
}
|
return self;
|
}
|
|
- (void)dealloc {
|
[[NSNotificationCenter defaultCenter] removeObserver:self];
|
}
|
|
#pragma mark - 懒加载
|
- (DHContainerVC *)containerVC {
|
if ([self.viewController.parentViewController isKindOfClass:[DHContainerVC class]]) {
|
return (DHContainerVC *)self.viewController.parentViewController;
|
}
|
return nil;
|
}
|
|
- (UINavigationItem *)customNavigationItem {
|
if (!_customNavigationItem) {
|
_customNavigationItem = [[DHNavigationItem alloc]init];
|
}
|
return _customNavigationItem;
|
}
|
|
- (UINavigationBar *)customNavigationBar {
|
if (!_customNavigationBar) {
|
_customNavigationBar = [[UINavigationBar alloc]init];
|
_customNavigationBar.barTintColor = [UIColor dhcolor_c43];
|
_customNavigationBar.items = @[self.customNavigationItem];
|
_lineView = [[UIView alloc]init];
|
[_customNavigationBar addSubview:_lineView];
|
_lineView.backgroundColor = [UIColor dhcolor_c8];
|
[_lineView mas_makeConstraints:^(MASConstraintMaker *make) {
|
make.bottom.mas_equalTo(0.0);
|
make.height.mas_equalTo(0.5);
|
make.left.right.mas_equalTo(0.0);
|
}];
|
|
}
|
return _customNavigationBar;
|
}
|
|
- (void)viewDidLoad {
|
_shadowImageView = [self findShadowImage:self.customNavigationBar];
|
|
//默认隐藏导航栏底部的线
|
[self setIsBarShadowHidden:YES];
|
|
//如果是从nib或者storyboard中加载的 那么将导航栏上的按钮迁移过来
|
if (self.viewController.nibBundle || self.viewController.storyboard) {
|
self.customNavigationItem.rightBarButtonItems = self.viewController.superNavigationItem.rightBarButtonItems;
|
self.customNavigationItem.title = self.viewController.title;
|
|
self.customNavigationItem.titleView = self.viewController.superNavigationItem.titleView;
|
|
}
|
|
//设置返回按钮
|
//如果是导航栈的第一个视图 那么不显示返回按钮
|
//否则显示返回按钮
|
if (self.viewController.navigationController.viewControllers.firstObject != self.viewController &&
|
self.customNavigationItem.leftBarButtonItems.count == 0 && [self.viewController respondsToSelector:@selector(onLeftNaviItemClick:)]) {
|
//使用原始渲染、图片向左等偏移处理
|
UIImage *image = [UIImage imageNamed:@"nav_back"];
|
image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
|
UIBarButtonItem *item = [[UIBarButtonItem alloc]initWithImage:image style:UIBarButtonItemStylePlain target:self.viewController action:@selector(onLeftNaviItemClick:)];
|
// item.imageInsets = UIEdgeInsetsMake(0, -10, 0, 0);
|
self.customNavigationItem.leftBarButtonItems = @[item];
|
}
|
}
|
|
- (void)viewDidAppear {
|
/*
|
这有一个问题 如果前面一个页面是横屏 然后跳转到后面一个页面是竖屏 那么状态栏的frame的变化通知会出现问题 frame不准确
|
所以放在viewwillAppera这里进行兼容 下面去掉的话 导航栏会往上面跑 被状态栏压住
|
*/
|
|
// LEAK: superview == baseController.view 会造成循环引用
|
__weak UIView *superView = self.customNavigationBar.superview;
|
if (superView == nil) {
|
return;
|
}
|
self.customNavigationBar.hidden = self.navigationBarHidden;
|
CGFloat height = UIApplication.sharedApplication.statusBarFrame.size.height;
|
if (height != self.customNavigationBar.frame.origin.y) {
|
CGFloat desAlpha = self.navigationBarHidden ? 0.0 : 1.0;
|
CGFloat desHeight = self.navigationBarHidden ? 0.0 : 44.0;
|
CGFloat desTop = self.navigationBarHidden ? 0 : height;
|
[self.customNavigationBar mas_remakeConstraints:^(MASConstraintMaker *make) {
|
make.top.equalTo(superView).offset(desTop);
|
make.left.mas_equalTo(superView);
|
make.right.mas_equalTo(superView);
|
make.height.mas_equalTo(desHeight);
|
}];
|
|
[UIView animateWithDuration:0.1 animations:^{
|
[superView layoutIfNeeded];
|
self.customNavigationBar.alpha = desAlpha;
|
}];
|
}
|
}
|
|
- (void)viewWillTransitionToSize {
|
[self viewDidAppear];
|
}
|
|
#pragma mark - 阴影线
|
- (void)setIsBarShadowHidden:(BOOL)isBarShadowHidden {
|
_isBarShadowHidden = isBarShadowHidden;
|
if (_shadowImageView) {
|
_shadowImageView.hidden = isBarShadowHidden;
|
_lineView.hidden = isBarShadowHidden;
|
}
|
}
|
|
#pragma mark - 屏幕旋转通知回调
|
- (void)handleDeviceOrientationDidChange:(NSNotification *)notification {
|
|
//NSLog(@"handleDeviceOrientationDidChange %@", [UIApplication sharedApplication].statusBarHidden ? @"YES" : @"NO");
|
// LEAK: superview == baseController.view 会造成循环引用
|
__weak UIView *superView = self.customNavigationBar.superview;
|
if (superView == nil) {
|
return ;
|
}
|
|
CGFloat height = UIApplication.sharedApplication.statusBarFrame.size.height;
|
if (height != self.customNavigationBar.frame.origin.y) {
|
CGFloat desAlpha = self.navigationBarHidden ? 0.0 : 1.0;
|
CGFloat desHeight = self.navigationBarHidden ? 0.0 : 44.0;
|
CGFloat desTop = self.navigationBarHidden ? 0 : height;
|
[self.customNavigationBar mas_remakeConstraints:^(MASConstraintMaker *make) {
|
make.top.equalTo(superView).offset(desTop);
|
make.left.equalTo(superView);
|
make.right.equalTo(superView);
|
make.height.mas_equalTo(desHeight);
|
}];
|
|
[UIView animateWithDuration:0.1 animations:^{
|
[superView layoutIfNeeded];
|
self.customNavigationBar.alpha = desAlpha;
|
}];
|
}
|
}
|
|
|
- (void)setNavigationBarHidden:(BOOL)navigationBarHidden {
|
[self setNavigationBarHidden:navigationBarHidden animated:NO];
|
}
|
|
- (void)setNavigationBarHidden:(BOOL)navigationBarHidden animated:(BOOL)animated {
|
_navigationBarHidden = navigationBarHidden;
|
// LEAK: superview == baseController.view 会造成循环引用
|
__weak UIView *superView = self.customNavigationBar.superview;
|
if(superView == nil) {
|
return ;
|
}
|
|
CGFloat desHeight = self.navigationBarHidden ? 0.0 : 44.0;
|
CGFloat desAlpha = self.navigationBarHidden ? 0.0 : 1.0;
|
CGRect statusRect = [[UIApplication sharedApplication] statusBarFrame];
|
CGFloat desTop = self.navigationBarHidden ? 0 : statusRect.size.height;
|
[self.customNavigationBar mas_remakeConstraints:^(MASConstraintMaker *make) {
|
make.top.mas_equalTo(desTop);
|
make.left.mas_equalTo(0.0);
|
make.right.mas_equalTo(0.0);
|
make.height.mas_equalTo(desHeight);
|
}];
|
|
if (animated) {
|
[UIView animateWithDuration:0.3 animations:^{
|
[superView layoutIfNeeded];
|
self.customNavigationBar.alpha = desAlpha;
|
}];
|
} else {
|
self.customNavigationBar.alpha = desAlpha;
|
}
|
}
|
|
#pragma mark - Shadow imageview
|
- (UIView *)findShadowImage:(UIView *)view {
|
//【*】为什么找不到UIImageView??
|
if (view.bounds.size.height <= 1) {
|
return view;
|
}
|
|
for (UIView *subview in view.subviews) {
|
UIView *view = [self findShadowImage:subview];
|
if (view != nil) {
|
return view;
|
}
|
}
|
return nil;
|
}
|
|
|
@end
|
