tableView如何重载数据及刷新cell
本篇文章为大家展示了tableView如何重载数据及刷新cell，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
#import "NewTitleTableViewController.h"
@interface NewTitleTableViewController ()
@property (nonatomic,retain) NSArray * arr;
@property (nonatomic ,retain) NSMutableData * data ;
@end
@implementation NewTitleTableViewController
- (void)dealloc
{
self.data = nil;
self.arr = nil;
[super dealloc];
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
NSString * urlString = @"http://XXXXX";
NSURL * url = [NSURL URLWithString:urlString];
NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:url];
NSString * parm = [NSString stringWithFormat:@"%@",@"?date=20131129&startRecord=10&len=30&udid=1234567890&terminalType=Iphone&cid=213"];
NSData * parmData = [parm dataUsingEncoding:NSUTF8StringEncoding];
//6 设置请求体
[request setHTTPBody:parmData];
//7 设置请求方式
[request setHTTPMethod:@"POST"];
异步POST
[NSURLConnection connectionWithRequest:request delegate:self];
}
代理方法:
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
self.data = [NSMutableData data];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[self.data appendData:data];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSDictionary * dic = [NSJSONSerialization JSONObjectWithData:self.data options:NSJSONReadingMutableContainers error:nil];
self.arr = dic[@"news"];
[self.tableView reloadData];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
}
tableView datadelegate 方法:
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (self.arr.count == 0) {
return 1;
}
return self.arr.count;
}
cell 方法
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString * iden = @"fff";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:iden];
if (!cell) {
cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:iden] autorelease];
}
if (self.arr[indexPath.row][@"title"] == nil)
{
cell.textLabel.text = @"加载中....";
}
else
{
cell.textLabel.text = self.arr[indexPath.row][@"title"];
}
return cell;
}
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