Создайте динамический UILabel, показывая статус загруженного файла с NSURLConnection

Question

Создайте одно приложение с одной страницей. На этой странице есть одна кнопка, метка & - progressview. Я хочу, чтобы начать загрузку при нажатии на кнопку и показать прогресс & статус метки скачать.

Я могу сделать прогресс, но я не могу создать ярлык, отображающий статус загрузки.

Например, я хочу, чтобы мой лейбл, чтобы показать "12 MB downloaded of 100 MB"

Это мой код:

вид controller.h

@interface ViewController : UIViewController 
{ 
    float expectedBytes; 
} 
@property (weak,nonatomic) IBOutlet UIProgressView *progressView; 
@property (strong,nonatomic) IBOutlet UIButton *download; 
- (IBAction)download:(id)sender; 

@end 

вид controller.m

@implementation ViewController 
{ 
    NSMutableData *receivedData; 
    NSString *currentURL; 
    NSString *name; 
} 
- (void)viewDidLoad 
{ 
    currentURL = @"http://192.168.1.100/mamal/Adele%20-%20Someone%20Like%20You%20(MTV%20Video%20Music%20Awards%202011)%20HD%20Live.mkv"; 
    name = [currentURL lastPathComponent]; 
    [super viewDidLoad]; 
} 
@synthesize progressView,download; 
-(IBAction)download:(id)sender 
{ 
    NSString* documentsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
    NSString* foofile = [documentsPath stringByAppendingPathComponent:name]; 
    BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:foofile]; 
    if (!fileExists) 
    { 
     [self downloadWithNsurlconnection]; 
    } 
    else 
    { 
     NSLog(@"FILE EXIST"); 
    } 
} 
-(void)downloadWithNsurlconnection 
{ 
    NSURL *url = [NSURL URLWithString:currentURL]; 
    NSURLRequest *theRequest = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:600]; 
    receivedData = [[NSMutableData alloc] initWithLength:0]; 
    NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self startImmediately:YES]; 
    [connection start]; 

} 


- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { 
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; 
    progressView.hidden = NO; 
    [receivedData setLength:0]; 
    expectedBytes = [response expectedContentLength]; 
} 

- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { 
    [receivedData appendData:data]; 
    float progressive = (float)[receivedData length]/(float)expectedBytes; 
    [progressView setProgress:progressive]; 
} 

- (void) connectionDidFinishLoading:(NSURLConnection *)connection { 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSLog(@"%@",paths); 
    NSString *documentsDirectory = [paths objectAtIndex:0]; 
    NSString *pdfPath = [documentsDirectory stringByAppendingPathComponent:name]; 
    NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]); 
    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; 
    [receivedData writeToFile:pdfPath atomically:YES]; 
} 

Пожалуйста, расскажите, как показать статус в UILabel с NSURLConnection.

Answer 1

поместить этот синтаксис в файле .h

@property (weak,nonatomic) IBOutlet UILabel *label; 

, затем в .m файле

- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { 
    [receivedData appendData:data]; 
    float progressive = (float)[receivedData length]/(float)expectedBytes; 
    [progressView setProgress:progressive]; 
    [lable setText:[NSString stringWithFormat:@"%u MB of %f MB",[receivedData length],expectedBytes]]; 

} 

Answer 2

Создайте розетку для метки

@property (weak,nonatomic) IBOutlet UILabel *label; 

затем в

- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { 
    [receivedData appendData:data]; 
    float progressive = (float)[receivedData length]/(float)expectedBytes; 
    [progressView setProgress:progressive]; 
    [lable setText:[NSString stringWithFormat:@"%u MB of %f MB",[receivedData length],expectedBytes]]; 
} 

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