Make buttons populate a UITableView when pressed - ios

Question

I have created a simple rss reader that populates the tableviewcell on viewdidLoad without a problem. My problem is whenever I click my button the tableview doesn't change. I tried reload with the button touchup inside and nothing still happens. Fairly new to Xcode and iOS programming so any help is great.
.m file
#import "ViewController.h"
#import "KMXMLParser.h"
#import "WebViewController.h"
#import "SportsViewController.h"
#interface ViewController ()
#end
#implementation ViewController
{
NSArray *loadData;
NSURL *thumbnails;
}
#synthesize parseResults=_parseResults;
- (void)viewDidLoad
{
[super viewDidLoad];
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://www.daytonastate.edu/rss/it.xml" delegate:nil];
_parseResults = [parser posts];
[self refreshFeed];
// Do any additional setup after loading the view, typically from a nib.
}
-(void) refreshInvoked:(id)sender forState:(UIControlState)state
{
[self refreshFeed];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)refreshFeed
{
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://www.daytonastate.edu/rss/it.xml" delegate:nil];
_parseResults = [parser posts];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return self.parseResults.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"DataCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}// Configure the cell...
cell.textLabel.text = (self.parseResults)[indexPath.row][#"title"];
cell.detailTextLabel.text = (self.parseResults)[indexPath.row][#"summary"];
[self reloadData];
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
WebViewController *vc = [[WebViewController alloc] init];
vc.url = [NSURL URLWithString:(self.parseResults)[indexPath.row][#"link"] ];
[self.navigationController pushViewController:vc animated:YES];
//Makes sure function clicks to reader feed.
// Navigation logic may go here. Create and push another view controller.
}
-(IBAction)pressBtn:(id)sender
{
UIButton *button= [UIButton buttonWithType:UIButtonTypeRoundedRect];
if (button.tag==1)
{
NSLog(#"Press button 1");
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://www.daytonastate.edu/rss/cea.xml" delegate:nil];
_parseResults = [parser posts];
[self reloadData];
}
if (button.tag==2)
{
NSLog(#"Press button 2");
[self EventsBtn:nil];
}
}
- (IBAction)NewsBtn:(id)sender
{
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://rss.cnn.com/rss/cnn_topstories.rss" delegate:nil];
_parseResults = [parser posts];
NSLog(#"reload happened");
// self.printMessage = [[PrintHello alloc] init]; // EDIT: THIS LINE WAS MISSING NOW IT WORKS
//[self.printMessage Print];
NSLog(#"NewsBtn Pressed");
}
- (IBAction)SportsBtn:(id)sender
{
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://www.daytonastate.edu/rss/it.xml" delegate:nil];
_parseResults = [parser posts];
}
- (IBAction)EventsBtn:(id)sender
{
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://www.daytonastate.edu/rss/events.xml" delegate:nil];
_parseResults = [parser posts];
NSLog(#"eventsBtn Pressed");
}
- (IBAction)WeatherBtn:(id)sender
{
KMXMLParser *parser = [[KMXMLParser alloc] initWithURL:#"http://w1.weather.gov/xml/current_obs/KDAB.rss" delegate:nil];
_parseResults = [parser posts];
}
#end

Answer 1

In your pressBtn: method, replace this line:
UIButton *button= [UIButton buttonWithType:UIButtonTypeRoundedRect];
with:
UIButton *button = (UIButton *)sender;
This assumes that in IB you have already hooked up the pressBtn: method to the appropriate button. The code you had was creating a new button when your pressBtn: action was called. Since this new button has a tag value of 0, nothing happened. The code I propose actually makes use of the button that was tapped by the user.

Answer 2

Using the invoker (sender), that is the item which you had action on it. Dont create a new button, you want to check the tag of button so the new button is not the item for your work.
Try your best man, :).