YYXC_School/LN_School/MessageList.m

//
//  WillDoVC.m
//  LNManager
//
//  Created by EchoShacolee on 2017/4/6.
//  Copyright © 2017年 lee. All rights reserved.
//

#import "MessageList.h"
#import "MessageCell.h"
#import "MessageDetailVC.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 MessageList ()<UITableViewDelegate,UITableViewDataSource>
{
    UITableView    *_tableView;
    NSMutableArray  *_dataArray;
    
    //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;
    
    //
    NSString      *_isRead;
    
    //缓存高度
    NSMutableArray * _heightArr;
}
@end

@implementation MessageList

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.title = @"未读消息";
    self.navigationController.navigationBar.translucent = NO;
    
    _dataArray = [NSMutableArray new];
    _heightArr = [NSMutableArray new];
    _isRead = @"0";
    _currentPageNum = 0;
    _IS_LOADING = NO;
    _getDataType = MyGetDataTypeNomal;
    
    [self myInit];
    [self setRefreshAction];
    [self getData];
}

-(void)myInit{
    
    [self goBackByNavigation];
    [self customRightBtn];
    
    //处理底部”上拉加载更多“显示异常（5c，ios10）
    UIView *view = [[UIView alloc]init];
    [self.view addSubview:view];
    
    _tableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, kFrame.size.width, kFrame.size.height - kNavOffSet) style:UITableViewStylePlain];
    _tableView.rowHeight = 70.0f;
    _tableView.delegate = self;
    _tableView.dataSource = self;
    _tableView.backgroundColor = RGB_COLOR(242, 243, 241);
    _tableView.showsVerticalScrollIndicator = NO;
    _tableView.tableFooterView = [UIView new];
    [self.view addSubview:_tableView];
    [_tableView registerNib:[UINib nibWithNibName:@"MessageCell" bundle:nil] forCellReuseIdentifier:@"MessageCellId"];
    
    _holderV = [[HolderView alloc]initWithFrame:_tableView.frame];
    [_holderV freshBlock:^{
        [self headerRefresh];
    }];
    [self.view addSubview:_holderV];
}

#pragma mark 导航栏右键
-(void)customRightBtn{

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
    btn.frame = CGRectMake(0, 0, 80, 44);
    btn.titleLabel.font = [UIFont systemFontOfSize:17];
    [btn setTitle:@"查看已读" forState:UIControlStateNormal];
    [btn setTitleColor:defGreen forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(hasReadClick:) forControlEvents:UIControlEventTouchUpInside];
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
}

-(void)hasReadClick:(UIButton *)item{
    
    if ([_isRead isEqualToString:@"0"]) {
        _isRead = @"1";
        [item setTitle:@"查看未读" forState:UIControlStateNormal];
        self.navigationItem.title = @"已读消息";
    }else{
        _isRead = @"0";
        [item setTitle:@"查看已读" forState:UIControlStateNormal];
        self.navigationItem.title = @"未读消息";
    }
    
    [self headerRefresh];
}

#pragma mark - 下拉刷新，上拉加载 -

-(void)setRefreshAction{
    
    // 下拉刷新
    __weak typeof(self) weakSelf = self;
    MJRefreshNormalHeader *mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
        [weakSelf headerRefresh];
    }];
    _tableView.mj_header = mj_header;
    
    MJRefreshBackNormalFooter *mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{
        [weakSelf footerRefresh];
    }];
    _tableView.mj_footer = mj_footer;
    
}


#pragma mark - 数据加载更多和刷新 -

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

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

#pragma mark tableview代理方法
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return _dataArray.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MessageCellId"];
    cell.dic = _dataArray[indexPath.row];
    return cell;
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    return 70;
    
//    //缓存高度
//    NSNumber *cellHeight = [_heightArr h_safeObjectAtIndex:indexPath.row];
//
//    if (cellHeight) {
//
//        return [cellHeight floatValue];
//
//    }else{
//
//        NSDictionary * dic = _dataArray[indexPath.row];
//
//        CGFloat w = _tableView.frame.size.width-60;
//        NSString *str = [NSString stringWithFormat:@"%@",dic[@"MI_CONTENT"]];
//        CGFloat h1 = [str heightForWid:w Font:14] + 5;
//        NSString *str2 = [NSString stringWithFormat:@"%@",dic[@"MI_TITLE"]];
//        CGFloat h2 = [str2 heightForWid:w Font:17] + 5;
//
//        CGFloat H = 46+h1+h2;//67为其它固定高度
//        [_heightArr addObject:@(H)];
//        return H;
//    }
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    MessageDetailVC *vc = [[MessageDetailVC alloc]init];
    vc.dic = _dataArray[indexPath.row];
    vc.block = ^{
        [self headerRefresh];
    };
    [self navPushHideTabbarToVC:vc];
}

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

#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;
    }
    
    if (![NetManager connectedToNetWork]) {
        showMsgUnconnect();
        return;
    }
    
    _IS_LOADING=YES;
    //获取第一页数据
    NSInteger needLoadPage;
    needLoadPage=_currentPageNum+1;
    if (_getDataType==MyGetDataTypeHeaderRefresh) {
        needLoadPage=1;
    }
    
    NSMutableDictionary *dic = [NSMutableDictionary dictionary];
    [dic setObject:defUser.userDict[@"id"]  forKey:@"userId"];
    [dic setObject:_isRead  forKey:@"isRead"];
    [dic setObject:@"1"  forKey:@"isPage"];
    [dic setObject:@"10"  forKey:@"pageSize"];
    [dic setObject:[NSString stringWithFormat:@"%ld",(long)needLoadPage]  forKey:@"currentPage"];
    
    NSString *method = @"getUnreadMsgList";
    [MBProgressHUD showLoadToView:self.view];
    [NetManager requestAnythingWithURL:method dictionary:dic dataArray:nil completion:^(NSDictionary *root)  {
        
        [MBProgressHUD hideHUDForView:self.view];
        
        _holderV.hidden = NO;
        //设置加载状态
        _IS_LOADING=NO;
        
        if (!root) {
            return;
        }
        if ([root[@"code"] integerValue] == 1) {
            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){
            [_dataArray removeAllObjects];
        }
        //追加数据
        [_dataArray addObjectsFromArray:root[@"body"]];
        if (_dataArray.count != 0) {
            _holderV.hidden = YES;
            //计数器＋1,这里只保证“点击刷新”的时候不会增加页数
            _currentPageNum=needLoadPage;
        }
        
        [_tableView reloadData];
        
        //恢复初始状态。
        _getDataType=MyGetDataTypeNomal;
        
    }];

     
}
@end