JSJP_Coach/JSJPCoach/HomeVC/E-LearningLog/KemuVC/EleBaseTableVC.m

//
//  EleBaseTableVC.m
//  JSJPCoach
//
//  Created by EchoShacolee on 2018/1/30.
//  Copyright © 2018年 Danson. All rights reserved.
//

#import "EleBaseTableVC.h"
#import <MJRefresh.h>
#import "MBProgressHUD+Add.h"

typedef NS_ENUM(NSInteger, MyGetDataType) {
    //正常请求数据
    MyGetDataTypeNomal=0,
    //下拉刷新请求数据
    MyGetDataTypeHeaderRefresh,
    //上拉加载更多请求数据
    MyGetDataTypeFooterRefresh
};


@interface EleBaseTableVC ()
{
    //记录页书
    NSInteger _currentPageNum;
    //正在加载的状态
    BOOL _IS_LOADING;
    //加载数据的类型
    MyGetDataType _getDataType;
    
    HolderView *holderV;
}
@end

@implementation EleBaseTableVC

- (void)viewDidLoad {
    [super viewDidLoad];
    
    _currentPageNum = 0;
    _IS_LOADING = NO;
    _getDataType = MyGetDataTypeNomal;
    _dataurce = [NSMutableArray array];
    
    [self setRefreshAction];
    
    self.tableView.height = kSize.height-kNavOffSet-40-kSafeAreaBottomHeight;
    holderV = [[HolderView alloc] initWithFrame:self.tableView.bounds];
    [self.tableView addSubview:holderV];
    holderV.hidden = YES;
    self.tableView.tableFooterView = [UIView new];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - 下拉刷新，上拉加载 -
-(void)setRefreshAction{
    // 下拉加载更多
    __weak typeof(self) weakSelf = self;
    MJRefreshNormalHeader *header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
        [weakSelf headerRefresh];
    }];
    self.tableView.mj_header = header;
    
    MJRefreshBackNormalFooter *footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{
        [weakSelf footerRefresh];
    }];
    
    self.tableView.mj_footer = footer;
    
}

-(void)headerRefresh{
    
    //设置获取数据的方式
    _getDataType=MyGetDataTypeHeaderRefresh;
    //加载数据
    [self getData];
    [self.tableView.mj_header endRefreshing];
}

-(void)footerRefresh{
    //设置获取数据的方式
    _getDataType=MyGetDataTypeFooterRefresh;
    //加载数据
    [self getData];
    [self.tableView.mj_footer endRefreshing];
}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return _dataurce.count;
}

#pragma mark - 网络请求
-(void)getData{
    
    //判断当前是否正在加载数据。如果正在加载数据，直接return。
    if (_IS_LOADING) {
        return;
    }
    _IS_LOADING=YES;
    //获取第一页数据
    NSInteger needLoadPage;
    needLoadPage=_currentPageNum+1;
    if (_getDataType==MyGetDataTypeHeaderRefresh) {
        needLoadPage=1;
    }
    
    NSMutableArray *arr=[NSMutableArray array];
    [arr addPro:@"dqbh"         Value:defUser.userDict[@"cityId"]];
    [arr addPro:@"stuId"      Value:_stuDic[@"TSO_ID"]];
    [arr addPro:@"subject"     Value:_kemuStr];
    [arr addPro:@"isPage"       Value:@"1"];
    [arr addPro:@"pageSize"     Value:@"10"];
    [arr addPro:@"currentPage"  Value:[NSString stringWithFormat:@"%ld",(long)needLoadPage]];
    
    NSString* method = @"trainClassRecordList";
    MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.tableView animated:YES];
    hud.frame = CGRectMake((kSize.width - 80)/2.0, (kSize.height - 80)/2.0, 80, 80);
    hud.color = [UIColor colorWithWhite:.9 alpha:.75];
    if (needLoadPage != 1) {//_getDataType==MyGetDataTypeFooterRefresh
        hud.yOffset -= 40;
    }
    [UIActivityIndicatorView appearanceWhenContainedIn:[MBProgressHUD class], nil].color = RGB_COLOR(182, 118, 74);
    [jiaPeiManager requestAnythingWithURL:method array:arr data:nil completion:^(NSDictionary * root) {
        [MBProgressHUD hideHUDForView:self.tableView animated:YES];
        _IS_LOADING = NO;
        
        if (!root) {
            MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.tableView animated:YES];
            hud.mode = MBProgressHUDModeText;
            hud.detailsLabelText =  @"请求失败";
            if (needLoadPage != 1) {//_getDataType==MyGetDataTypeFooterRefresh
                hud.yOffset -= 40;
            }
            hud.removeFromSuperViewOnHide = YES;
            [hud hide:YES afterDelay:3];
            return ;
        }
        if ([root[@"code"] isEqualToString:@"1"]) {
            MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.tableView animated:YES];
            hud.mode = MBProgressHUDModeText;
            hud.detailsLabelText =  root[@"msg"];
            if (needLoadPage != 1) {//_getDataType==MyGetDataTypeFooterRefresh
                hud.yOffset -= 40;
            }
            hud.removeFromSuperViewOnHide = YES;
            [hud hide:YES afterDelay:3];
            return;
        }
        
        //处理数据
        //如果获取到了数据，而且是下拉刷新，清空数组。
        if (_getDataType==MyGetDataTypeHeaderRefresh){
            [_dataurce removeAllObjects];
        }
        //追加数据
        [_dataurce addObjectsFromArray:root[@"body"]];
        
        if (_dataurce.count == 0) {
            holderV.hidden = NO;
            self.view.userInteractionEnabled = NO;
        }
        if ([root[@"body"] count] != 0) {
            //计数器＋1
            _currentPageNum=needLoadPage;
        }
        //刷新界面
        [self.tableView reloadData];
        
        //恢复初始状态。
        _getDataType=MyGetDataTypeNomal;
    }];
    
}


@end