When call to the - (void)downloadTheme method, you can use this Object
MCSecondLoadingScreen.h File
#import "UIKit/UIKit.h"
#import "eCommerceAppDelegate.h"
@class eCommerceAppDelegate;
@interface MCSecondLoadingScreen : UIViewController "UIAlertViewDelegate"
{
UILabel *loadingText;
UIActivityIndicatorView *activityView;
UIButton *skipButton;
UIProgressView *progressBar;
NSURLConnection *urlConnection;
double fileLength;
double lastProgress;
double currentLength;
id parent;
NSOutputStream *fileStreem;
}
@property (nonatomic, retain) IBOutlet UILabel *loadingText;
@property (nonatomic, retain) IBOutlet UIActivityIndicatorView *activityView;
@property (nonatomic, retain) IBOutlet UIButton *skipButton;
@property (nonatomic, retain) IBOutlet UIProgressView *progressBar;
@property (assign) id parent;
- (IBAction)skipButtonTapped;
- (void)showProgress;
- (void)downloadTheme;
- (void)extractTheme;
- (void)deleteZipFile;
@end
MCSecondLoadingScreen.h File
#import "MCSecondLoadingScreen.h"
#import "ZipArchive.h"
#define kThemeFileName @"theme.zip"
@implementation MCSecondLoadingScreen
@synthesize loadingText;
@synthesize activityView;
@synthesize skipButton;
@synthesize progressBar;
@synthesize parent;
- (IBAction)skipButtonTapped
{
[urlConnection cancel];
[fileStreem close];
[self deleteZipFile];
[parent loadTabBarController];
}
- (void)showProgress
{
[activityView stopAnimating];
[activityView setHidden:YES];
[progressBar setHidden:NO];
[skipButton setHidden:NO];
loadingText.text = NSLocalizedString(@"Loading Theme", @"Loading Theme");
}
- (void)downloadTheme
{
NSURL *url = [[NSURL alloc] initWithString:@"http://download.macromedia.com/pub/flashplayer/updaters/10/flashplayer_10_sa_debug.app.zip"];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
[url release];
urlConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
[request release];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *themePath = [documentsDirectory stringByAppendingPathComponent:kThemeFileName];
fileStreem = [[NSOutputStream alloc] initToFileAtPath:themePath append:YES];
[fileStreem open];
}
- (void)extractTheme
{
[activityView startAnimating];
[activityView setHidden:NO];
skipButton.hidden = YES;
progressBar.hidden = YES;
loadingText.text = NSLocalizedString(@"Extracting
Theme", @"Extracting Theme");
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *themePath = [documentsDirectory stringByAppendingPathComponent:kThemeFileName];
if (themePath) {
//unzip the file
ZipArchive* za = [[ZipArchive alloc] init];
if( [za UnzipOpenFile:themePath]
){
if([za UnzipFileTo:documentsDirectory
overWrite:YES])
{
}
[za UnzipCloseFile];
}
[za
release];
NSFileManager *fm = [NSFileManager defaultManager]; // delete zip file
[fm
removeItemAtPath:themePath error:nil];
[fm
removeItemAtPath:[documentsDirectory stringByAppendingPathComponent: @"__MACOSX"] error:nil];
}
//update theme count in database.
[parent loadTabBarController];
}
- (void)deleteZipFile
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *themePath = [documentsDirectory stringByAppendingPathComponent:kThemeFileName];
NSFileManager *fileManager = [NSFileManager defaultManager];
[fileManager removeItemAtPath:themePath error:nil];
}
- (void)viewDidLoad
{
[super viewDidLoad];
fileLength = 1.0;
lastProgress = 0.0;
currentLength = 0.0;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload
{
self.loadingText = nil;
[super viewDidUnload];
// Release
any retained subviews of the main view.
// e.g.
self.myOutlet = nil;
activityView = nil;
loadingText = nil;
skipButton = nil;
progressBar = nil;
}
- (void)dealloc
{
[loadingText release];
[activityView release];
[skipButton release];
[progressBar release];
[fileStreem release];
[super dealloc];
}
#pragma mark -
#pragma mark URLConnection
Delegate
- (void)connection:(NSURLConnection *)connection
didReceiveResponse:(NSURLResponse *)response
{
long length = [response expectedContentLength];
fileLength = length;
}
- (void)connection:(NSURLConnection *)connection
didReceiveData:(NSData *)data
{
double length = [data length];
currentLength += length;
double progress = currentLength/fileLength;
if (lastProgress < progress) {
progressBar.progress = progress;
lastProgress = progress;
}
NSUInteger left = [data length];
NSUInteger nwr = 0;
do {
nwr
= [fileStreem write:[data bytes] maxLength:left];
if (-1 == nwr) break;
left
-= nwr;
} while (left > 0);
if (left) {
NSLog(@"stream error: %@",
[fileStreem streamError]);
}
}
- (void)connection:(NSURLConnection *)connection
didFailWithError:(NSError *)error
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Connection
Failed", @"Connection Failed")
message:NSLocalizedString(@"Theme downloading
Failed", @"Theme downloading Failed")
delegate:self
cancelButtonTitle:NSLocalizedString(@"OK", @"OK")
otherButtonTitles:nil];
[alert show];
[alert release];
[fileStreem close];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
progressBar.progress = 1.0;
[fileStreem close];
[self extractTheme];
}
- (void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex
{
}
- (void)alertView:(UIAlertView *)alertView
didDismissWithButtonIndex:(NSInteger)buttonIndex
{
[self deleteZipFile];
[parent loadTabBarController];
}
@end
