iboss-ios/IBOSS/Receipt/CustomProductReceipt/CustomReceiptHomeViewController.m

//  CustomReceiptHomeViewController.m
//  IOBSS 2.0
//
//  Created by 刘瀚璘 on 2017.7.14
//  Copyright 2017  沈阳东科云信软件有限公司. All rights reserved.
//
//  系统名称：
//  功能描述：定制品回执页面


#import "CustomReceiptHomeViewController.h"

@interface CustomReceiptHomeViewController (){
    /**
     判断是否加载过已回执界面
     */
    bool isLoad;
}

@end

@implementation CustomReceiptHomeViewController

/**
 滑动的个数
 */
static  int _count = 2;

#pragma mark - 公共函数

/**
 公共函数
 */
- (void)viewDidLoad {
    [super viewDidLoad];
    [self initUI];
}

/**
 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.noReceiptVC viewSafeAreaInsetsDidChange];
    [self.receiptVC viewSafeAreaInsetsDidChange];
    [super viewSafeAreaInsetsDidChange];
}

/**
 滑动label位置
 @param scrollView
 */
- (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/_count;
    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];
}

#pragma mark - 事件

/**
 点击已回执，未回执切换
 @param btn
 */
- (void)sliderAction:(UIButton *) btn{
    if (self.currentIndex == btn.tag) {
        return;
    }
    if(btn.tag == 2){
        if(!isLoad){
            [_receiptVC loadDataView];
            isLoad = true;
        }
    }
    [self.view endEditing:YES];
    [self sliderAnimationWithTag:btn.tag];
    [UIView animateWithDuration:0.3 animations:^{
        _mainScrollView.contentOffset = CGPointMake(Screen_Width*(btn.tag-1), 0);
    } completion:^(BOOL finished) {
        
    }];
}

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

/**
 滑动tag
 @param tag
 */
- (void)sliderWithTag:(NSInteger) tag {
    self.currentIndex = tag;
    _noReceiptBtn.selected = NO;
    _receiptBtn.selected = NO;
    if(tag == 2){
        if(!isLoad){
            [_receiptVC loadDataView];
            isLoad = true;
        }
    }
    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);
}

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

#pragma mark - 初始化

/**
 未回执实例
 @return 实例
 */
- ( CustomNoReceiptViewController *) noReceiptVC {
    if (_noReceiptVC == nil) {
        _noReceiptVC = [[CustomNoReceiptViewController alloc] init];
        _noReceiptVC.navigation=self.navigationController;
    }
    return _noReceiptVC;
}

/**
 已回执实例
 @return 实例
 */
- (CustomReceiptViewController *) receiptVC {
    if (_receiptVC == nil) {
        _receiptVC = [[CustomReceiptViewController   alloc] init];
        _receiptVC.navigation=self.navigationController;    }
    return _receiptVC;
}

/**
 初始化布局
 */
- (void)initUI{
    self.navigationItem.title = @"定制品回执一览";
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:[UIImage imageNamed:@"icon_back.png"] 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;
    
    UIView *navView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, Screen_Width, 40)];
    [self.view addSubview:navView];
    [self.view setBackgroundColor:[UIColor whiteColor]];
    _noReceiptBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [_noReceiptBtn setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [_noReceiptBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    
    _noReceiptBtn.frame = CGRectMake(0, 0, Screen_Width/_count, navView.frame.size.height);
    _noReceiptBtn.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
    [_noReceiptBtn addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventTouchUpInside];
    [_noReceiptBtn setTitle:@"未回执" forState:UIControlStateNormal];
    _noReceiptBtn.tag = 1;
    _noReceiptBtn.selected = YES;
    [navView addSubview:_noReceiptBtn];
    
    _receiptBtn= [UIButton buttonWithType:UIButtonTypeCustom];
    _receiptBtn.frame = CGRectMake(CGRectGetMaxX(_noReceiptBtn.frame),0, Screen_Width/_count, navView.frame.size.height);
    [_receiptBtn setTitleColor:[UIColor redColor] forState:UIControlStateSelected];
    [_receiptBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    _receiptBtn.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
    [_receiptBtn addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventTouchUpInside];
    [_receiptBtn setTitle:@"已回执" forState:UIControlStateNormal];
    _receiptBtn.titleLabel.font = [UIFont systemFontOfSize:ButtonFontOfSize];
    _receiptBtn.tag = 2;
    [navView addSubview: _receiptBtn];
    _sliderLabel = [[UILabel alloc]initWithFrame:CGRectMake(_noReceiptBtn.frame.origin.x, 40-2, Screen_Width/_count, 2)];
    UIView *line = [[UIView alloc] initWithFrame:CGRectMake(((Screen_Width/_count)-50)/2, 0, 50, 2)];
    line.backgroundColor = [UIColor redColor];
    [_sliderLabel addSubview:line];
    [navView addSubview:_sliderLabel];
    [self initSrollView];
    [self sliderWithTag:self.currentIndex+1];
}

/**
 初始化srollView
 */
- (void)initSrollView {
    _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.noReceiptVC.view,self.receiptVC.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];
}

@end