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下拉刷新

下拉刷新

作者: b6e7b0be2603 | 来源:发表于2018-11-23 11:34 被阅读0次

#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];

    [arr addObject:@"123"];

    [tbv reloadData];

    refC.attributedTitle = [[NSAttributedString alloc]initWithString:@"下拉刷新.."];

}

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

    return arr.count;

}

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

    staticNSString*ss =@"";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ss];

    if(cell ==nil){

        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ss];

    }

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

    returncell;

}

@end

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