iOS - progressbar with value from php - ios

Question

I have a progress bar in my app showing a percent value.
progressView = [[DDProgressView alloc] initWithFrame:CGRectMake(20.0f, 140.0f, self.view.bounds.size.width - 40.0f, 0.0f)];
[progressView setOuterColor:[UIColor grayColor]];
[progressView setInnerColor:[UIColor lightGrayColor]];
[self.view addSubview:progressView];
[progressView release];
float randomPercentageFloat = 40;
progressView.progress = randomPercentageFloat / 100;
This shows a progress bar which is 40% full. I want to make the progress bar to show a value from a php. I have a php file that echoes a value. I want to change the randomPercentageFloat = 40; to something like
float randomPercentageFloat = "www.website.com/value.php";
Is this possible? How can it be done?

Answer 1

You have to establish connection with your server e retrieve the value, following the sample cose
test.php contains this instruction:
<?php echo 40; ?>
here sample viewController.m with progress view linked via Interface Builder
#import "ViewController.h"
#interface ViewController () {
IBOutlet UIProgressView *progressView;
NSMutableData *receivedData;
}
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
progressView.progressTintColor = [UIColor lightGrayColor];
progressView.trackTintColor = [UIColor grayColor];
progressView.progress = 0.0f;
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://192.168.0.29/test.php"]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10.0];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (!theConnection) {
UIAlertView *connectFailMessage = [[UIAlertView alloc] initWithTitle:#"NSURLConnection " message:#"Failed in viewDidLoad" delegate: self cancelButtonTitle:#"Ok" otherButtonTitles: nil];
[connectFailMessage show];
}
}
#pragma mark NSURLConnection Methods
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
receivedData = [NSMutableData data];
[receivedData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
// inform the user
UIAlertView *didFailWithErrorMessage = [[UIAlertView alloc] initWithTitle: #"NSURLConnection " message: #"didFailWithError" delegate: self cancelButtonTitle: #"Ok" otherButtonTitles: nil];
[didFailWithErrorMessage show];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *dataString = [[NSString alloc] initWithData: receivedData encoding:NSUTF8StringEncoding];
progressView.progress = [dataString floatValue] / 100;
}
#end