#import "RefreshViewController.h"
#import <MJRefresh.h>
@interface RefreshViewController () <UITableViewDataSource, UITableViewDelegate>
@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *array;
@end
@implementation RefreshViewController
- (void)viewDidLoad {
 [super viewDidLoad];
 self.view.backgroundColor = [UIColor whiteColor];
 
 __weak typeof(self) weakSelf = self;
 UITableView *tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
 tableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
 tableView.delegate = self;
 tableView.dataSource = self;
 tableView.rowHeight = 150;
 tableView.sectionHeaderHeight = 100;
 tableView.sectionFooterHeight = 0.01;
 if (@available(iOS 15.0, *)) {
 tableView.sectionHeaderTopPadding = 0.0;
 }
 tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
 [weakSelf pullDownRequest];
 }];
 tableView.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{
 [weakSelf pullUpRequest];
 }];
 [self.view addSubview:tableView];
 self.tableView = tableView;
 [self pullDownRequest];
}
- (void)viewDidLayoutSubviews {
 [super viewDidLayoutSubviews];
 self.tableView.frame = CGRectMake(0, 64, self.view.bounds.size.width, self.view.bounds.size.height - 64);
}
/// 下拉
- (void)pullDownRequest {
 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
 self.array = [NSMutableArray arrayWithObjects:@1, @1, @1, @1, nil];
 [self.tableView.mj_header endRefreshing];
 [self.tableView reloadData];
 });
}
/// 上拉
- (void)pullUpRequest {
 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
 [self.array addObjectsFromArray:@[@(1)]];
 [self.tableView.mj_footer endRefreshing];
 [self.tableView reloadData];
 });
}
#pragma mark - UITableViewDataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
 return self.array.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"UITableViewCell"];
 if (!cell) {
 cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"UITableViewCell"];
 }
 cell.textLabel.text = [NSString stringWithFormat:@"index %@", @(indexPath.row)];
 cell.backgroundColor = [UIColor clearColor];
 return cell;
}
#pragma mark - UITableViewDelegate
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
 UILabel *label = [[UILabel alloc] init];
 label.text = @"ScetionHeader";
 label.backgroundColor = [UIColor colorWithWhite:0.5 alpha:0.5];
 return label;
}
@end