How to reload data and refresh cell by tableView
This article shows you how tableView reloads data and refreshes cell. The content is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.
# 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 set the request body
[request setHTTPBody:parmData]
/ / 7 set the request method
[request setHTTPMethod:@ "POST"]
Asynchronous POST
[NSURLConnection connectionWithRequest:request delegate:self]
}
Agent method:
-(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 method:
# 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 method
-(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 = @ "loading...."
}
Else
{
Cell.textLabel.text = self.arr [indexPath.row] [@ "title"]
}
Return cell
}
The above is how tableView reloads data and refreshes cell. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.
