iboss-ios/IBOSS/Inventory/Controller/InventoryFreezeHomeViewController.m

//
//  InventoryFreezeHomeViewController.m
//  IBOSS
//
//  Created by 关宏厚 on 2020/4/28.
//  Copyright © 2020 elongtian. All rights reserved.
//

#import "InventoryFreezeHomeViewController.h"

@interface InventoryFreezeHomeViewController ()

@end

/**
 导航数
 */
static int navcount = 2;

@implementation InventoryFreezeHomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self loadNavStyle];
    [self initUI];
    [self setMainSrollView];
    [self sliderWithTag:self.currentIndex+1];
}

/**
 导航按钮样式
 */
- (void)loadNavStyle
{
  self.navigationItem.title = @"库存冻结";
    //返回
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:[UIImage imageNamed:@"icon_back"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(goBack)
     forControlEvents:UIControlEventTouchUpInside];
    button.frame = CGRectMake(0, 0,45,22);
    
    UIBarButtonItem *menuButton = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.leftBarButtonItem = menuButton;
}

/**
 安全区视图发生变化
 */
-(void)viewSafeAreaInsetsDidChange{
    self.view.backgroundColor = [UIColor whiteColor];
    _mainScrollView.frame = CGRectMake(0, 40, Screen_Width,self.view.safeAreaLayoutGuide.layoutFrame.size.height-40);
    for (NSInteger i = 0; i < _mainScrollView.subviews.count; i++) {
        _mainScrollView.subviews[i].frame = CGRectMake(Screen_Width * i, 0, Screen_Width,CGRectGetHeight(_mainScrollView.frame));
    }
    [self.goodsSearchVC viewSafeAreaInsetsDidChange];
    [self.orderSearchVC viewSafeAreaInsetsDidChange];
    [super viewSafeAreaInsetsDidChange];
}

/**
 *  返回函数
 */
- (void)goBack
{
    [self.navigationController popViewControllerAnimated:YES];
}



/**
 产品搜索vc
 
 @return <#return value description#>
 */
- (InventoryFreezeGoodsSearchViewController *)goodsSearchVC{
    if (_goodsSearchVC == nil) {
        _goodsSearchVC = [[InventoryFreezeGoodsSearchViewController alloc] init];
        _goodsSearchVC.cNav=self.navigationController;
    }
    return _goodsSearchVC;
}

/**
 历史订单vc
 
 @return
 */
- (InventoryFrozenOrderViewController *)orderSearchVC{
    if (_orderSearchVC == nil) {
        _orderSearchVC= [[InventoryFrozenOrderViewController   alloc] init];
        _orderSearchVC.cNav=self.navigationController;
    }
    return _orderSearchVC;
}




/*
 初始化UI
 */
- (void)initUI
{
    UIView *navView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, Screen_Width, 40)];
    [self.view addSubview:navView];
    [self.view setBackgroundColor:[UIColor whiteColor]];
    _productSearchButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [_productSearchButton setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [_productSearchButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    
    _productSearchButton.frame = CGRectMake(0, 0, Screen_Width/navcount, navView.frame.size.height);
    _productSearchButton.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
    [_productSearchButton addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventTouchUpInside];
    [_productSearchButton setTitle:@"商品查询" forState:UIControlStateNormal];
    
    _productSearchButton.tag = 1;
    _productSearchButton.selected = YES;
    [navView addSubview:_productSearchButton];
    _frozenOrderButton= [UIButton buttonWithType:UIButtonTypeCustom];
    _frozenOrderButton.frame = CGRectMake(CGRectGetMaxX(_productSearchButton.frame),0, Screen_Width/navcount, navView.frame.size.height);
    [_frozenOrderButton setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [_frozenOrderButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    
    _frozenOrderButton.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
    [_frozenOrderButton addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventTouchUpInside];
    [_frozenOrderButton setTitle:@"冻结订单" forState:UIControlStateNormal];
    _frozenOrderButton.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
   _frozenOrderButton.tag = 2;
    [navView addSubview: _frozenOrderButton];
    _sliderLabel = [[UILabel alloc]initWithFrame:CGRectMake(_productSearchButton.frame.origin.x, 40-2, Screen_Width/navcount, 2)];
    UIView *line = [[UIView alloc] initWithFrame:CGRectMake(((Screen_Width/navcount)-70)/2, 0, 70, 2)];
    line.backgroundColor = [UIColor redColor];
    [_sliderLabel addSubview:line];
    [navView addSubview:_sliderLabel];
}

/**
 按钮点击事件
 
 @param sender <#sender description#>
 */
- (void)sliderAction:(UIButton *)sender{
    if (self.currentIndex == sender.tag) {
        return;
    }
    [self.view endEditing:YES];
    [self sliderAnimationWithTag:sender.tag];
    [UIView animateWithDuration:0.3 animations:^{
        self->_mainScrollView.contentOffset = CGPointMake(Screen_Width*(sender.tag-1), 0);
    } completion:^(BOOL finished) {
        
    }];
}

/**
 滑动tag
 
 @param tag <#tag description#>
 */
- (void)sliderAnimationWithTag:(NSInteger)tag{
    self.currentIndex = tag;
    _productSearchButton.selected = NO;
    _frozenOrderButton.selected = NO;
    
    UIButton *sender = [self buttonWithTag:tag];
    sender.selected = YES;
    //动画
    [UIView animateWithDuration:0.3 animations:^{
        self->_sliderLabel.frame = CGRectMake(sender.frame.origin.x, self->_sliderLabel.frame.origin.y, self->_sliderLabel.frame.size.width, self->_sliderLabel.frame.size.height);
        
    } completion:^(BOOL finished) {
        
    }];
}

/*
 获得导航按钮
 */
- (UIButton *)buttonWithTag:(NSInteger )tag{
    if (tag == 1) {
        return _productSearchButton;
    }
    else if (tag == 2){
        return _frozenOrderButton;
    }
    
    else{
        return nil;
    }
}

/**
 初始化srollView
 */
- (void)setMainSrollView{
    _mainScrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 40, Screen_Width, self.view.frame.size.height)];
    _mainScrollView.delegate = self;
    _mainScrollView.backgroundColor = [UIColor whiteColor];
    _mainScrollView.pagingEnabled = YES;
    _mainScrollView.showsHorizontalScrollIndicator = NO;
    _mainScrollView.showsVerticalScrollIndicator = NO;
    [self.view addSubview:_mainScrollView];
    NSArray *views = @[self.goodsSearchVC.view,self.orderSearchVC.view];
    for (NSInteger i = 0; i< views.count; i++) {
        //把三个vc的view依次贴到mainScrollView上面
        UIView *pageView = [[UIView alloc]initWithFrame:CGRectMake(Screen_Width * i, 0, _mainScrollView.frame.size.width, _mainScrollView.frame.size.height - 100)];
        [pageView addSubview:views[i]];
        [_mainScrollView addSubview:pageView];
    }
    _mainScrollView.contentSize = CGSizeMake(Screen_Width*(views.count), 0);
    //滚动到_currentIndex对应的tab
    [_mainScrollView setContentOffset:CGPointMake((_mainScrollView.frame.size.width)*_currentIndex, 0) animated:YES];
}

/**
 滑动label位置
 
 @param scrollView <#scrollView description#>
 */
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    //实时计算当前位置,实现和titleView上的按钮的联动
    CGFloat contentOffSetX = scrollView.contentOffset.x;
    CGFloat X = contentOffSetX/ navcount;
    CGRect frame = _sliderLabel.frame;
    frame.origin.x = X;
    _sliderLabel.frame = frame;
}

/**
 滑动完成
 
 @param scrollView <#scrollView description#>
 */
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
    CGFloat contentOffSetX = scrollView.contentOffset.x;
    int index_ = contentOffSetX/Screen_Width;
    [self sliderWithTag:index_+1];
}

/**
 滑动tag
 
 @param tag <#tag description#>
 */
- (void)sliderWithTag:(NSInteger)tag{
    self.currentIndex = tag;
    _productSearchButton.selected = NO;
    _frozenOrderButton.selected = NO;
    
    UIButton *sender = [self buttonWithTag:tag];
    sender.selected = YES;
    //动画
    _sliderLabel.frame = CGRectMake(sender.frame.origin.x, _sliderLabel.frame.origin.y, _sliderLabel.frame.size.width, _sliderLabel.frame.size.height);
}




@end