下拉刷新

#import “ViewController.h”

@interface ViewController ()<UITableViewDelegate,UITableViewDataSource>
{
UITableView *tbv;
NSMutableArray *arr;
UIRefreshControl *refC;
}
@end

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];

  arr = [NSMutableArray arrayWithObjects:@“你好”,@“dqwd”,@“dqwd”, nil];

  tbv = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStylePlain];
  tbv.delegate = self;
  tbv.dataSource = self;
  [self.view addSubview:tbv];

  // 初始化刷新控件
  refC = [[UIRefreshControl alloc]init];

  // 刷新提示文字
  refC.attributedTitle = [[NSAttributedString alloc]initWithString:@“下拉刷新…”];

  // 添加事件
  [refC addTarget:self action:@selector(abc) forControlEvents:UIControlEventValueChanged];

  refC.tintColor = [UIColor whiteColor];

  refC.backgroundColor = [UIColor redColor];
  // 设置表格刷新控件
  tbv.refreshControl = refC;

}

-(void)abc{

refC.attributedTitle = [[NSAttributedString alloc]initWithString:@"正在刷新中...."];

[self performSelector:@selector(bcd) withObject:nil afterDelay:3.0];

}

-(void)bcd{

[refC endRefreshing];

}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

return arr.count;

}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

static NSString *ss = @"";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ss];
if(cell == nil){
    
    cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ss];
}



cell.textLabel.text = arr[indexPath.row];
return cell;

}

@end