whose_ios/NIMDemo/NIMDemo/SocialTableViewController.m

//
//  SocialTableViewController.m
//  NIMDemo
//
//  Created by Fenix Wang on 2017/6/20.
//  Copyright © 2017年 Netease. All rights reserved.
//

#import "SocialTableViewController.h"
#import "SocialPublishViewController.h"
#import "SocialTableViewCell.h"
#import "HttpRequest.h"
#import "UIView+NTES.h"

@interface SocialTableViewController () <UIScrollViewDelegate>

@property (nonatomic, strong) NSMutableArray    *dataList;
@property (nonatomic, assign) BOOL              isFetching;
@property (nonatomic, assign) BOOL              flagRefresh;

@end

@implementation SocialTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;
    
    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem;
    _flagRefresh = NO;
    [self fetchDataList];
}

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


- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    
    
    UINavigationItem *navItem = self.parentViewController.navigationItem;
    
    navItem.title = @"朋友圈";
    
    UIButton *emptyBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [emptyBtn setTitle:@"" forState:UIControlStateNormal];
    [emptyBtn sizeToFit];
    UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithCustomView:emptyBtn];
    
    [navItem setLeftBarButtonItems:@[leftItem]];
    
    UIButton *publishBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [publishBtn setTitle:@"发布" forState:UIControlStateNormal];
    [publishBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [publishBtn addTarget:self action:@selector(onTouchPublish:) forControlEvents:UIControlEventTouchUpInside];
    [publishBtn sizeToFit];
    
    UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithCustomView:publishBtn];
    [navItem setRightBarButtonItems:@[rightItem]];
}


- (void)fetchDataList{
    
    if(_isFetching)
        return;
    
    _isFetching = YES;
    
    NSString *lastId = nil;
    if(self.dataList && self.dataList.count){
        SocialItemData *lastData = [self.dataList lastObject];
        lastId = lastData.socialId;
    }
        
    
    [[HttpRequest shared] getSocialDataList:lastId success:^(NSMutableArray *dataList) {
        if(!self.dataList)
            self.dataList = dataList;
        else
            [self.dataList addObjectsFromArray:dataList];
        
        [self.tableView reloadData];
        
        _isFetching = NO;
    } failure:^{
        _isFetching = NO;
    }];
}


#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
#warning Incomplete implementation, return the number of sections
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
#warning Incomplete implementation, return the number of rows
    if(_dataList)
        return _dataList.count;
    return 0;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    NSString *cellId = @"social";
    SocialTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
    if(!cell)
    {
        cell = [[SocialTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellId];
        [cell initWidth:self.view.frame.size.width];
    }
    
    SocialItemData *data = [_dataList objectAtIndex:indexPath.row];
    [cell setData:data];
    
    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    SocialItemData *data = [self.dataList objectAtIndex:indexPath.row];
    return data.cellHeight;
}

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        [tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
    } else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/



- (void)onTouchPublish:(int)sender
{
    UIViewController *vc = [[SocialPublishViewController alloc] init];
    [self.navigationController pushViewController:vc animated:YES];
}



- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    //康海涛测试Ok的
    CGPoint offset1 = scrollView.contentOffset;
    CGRect bounds1 = scrollView.bounds;
    CGSize size1 = scrollView.contentSize;
    UIEdgeInsets inset1 = scrollView.contentInset;
    float y1 = offset1.y + bounds1.size.height - inset1.bottom;
    float h1 = size1.height;
    
    //NSLog(@"%f %f %i %f", y1, h1, _flagRefresh, bounds1.size.height);
    
    if(h1 < bounds1.size.height)
        return;
    
    if (y1 > h1 + 50) {
        _flagRefresh = YES;
    }
    else if (y1 == h1) {
        if(_flagRefresh)
        {
            _flagRefresh = NO;
            NSLog(@"下拉刷新");
            [self fetchDataList];
        }
    }
    
}

@end