应用在AppStore检测版本更新

// appstore的情况下，版本检查升级的处理

#define  kShiperAppID     @"AppStore中查看AppId" 

#define  kURLLookup   @"http://itunes.apple.com/cn/lookup?id=%@"

#pragma mark - appStore检查更新
- (void)checkUpdate:(id)sender{
    
    __weak typeof(self) wself = self;
    [MBProgressHUD showHUDAddedTo:self.window animated:YES];
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(){
        //        NSString *url = [NSString stringWithFormat:kURLLookup,@"423084029"];
        //        if ([self.type isEqualToString:@"shipper"]) {
        NSString *url = [NSString stringWithFormat:kURLLookup,kShiperAppID];
        //        }
        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
        [request setURL:[NSURL URLWithString:url]];
        [request setHTTPMethod:@"GET"];
        NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
        NSDictionary *result = [NSJSONSerialization JSONObjectWithData:returnData options:0 error:nil];
        NSString *serverV  = @"";
        NSString *serVInfo = @"";
        do
        {
            if (!result){
                break;
            }
            id ary = result[@"results"];
            if (!ary || NO == [ary isKindOfClass:[NSArray class]]) {
                break;
            }
            if ([(NSArray*)ary count] <= 0) {
                break;
            }
            NSDictionary* dict = ary[0];
            if (!dict) {
                break;
            }
            serverV = [dict objectForKey:@"version"];
            serVInfo = [dict objectForKey:@"releaseNotes"];
        }while (NO);
        
        dispatch_async(dispatch_get_main_queue(), ^(){
            [MBProgressHUD hideAllHUDsForView:wself.window animated:YES];
            NSString* currver = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"];
            if ([currver length] == 0)
            {
                currver = [[NSBundle mainBundle] objectForInfoDictionaryKey:(NSString *)kCFBundleVersionKey];
            }
            if (serverV.length > 0 && NSOrderedDescending == [self verseionCompare:currver ver2compare:serverV]) {
                
                NSString* tipmsg   = [NSString stringWithFormat:@"发现新版：%@
%@",serverV,serVInfo];
                
                UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil
                                                               message:tipmsg
                                                              delegate:self
                                                     cancelButtonTitle:@"取消"
                                                     otherButtonTitles:@"更新",nil];
                [alert show];
            }else{//如果是最新版本则不提醒
                //                [self showMessageWith:@"您当前的版本已是最新版本"];
                //                NSString* tipmsg   = [NSString stringWithFormat:@"发现新版：%@
%@",serverV,serVInfo];
                //
                //                UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil
                //                                                               message:tipmsg
                //                                                              delegate:self
                //                                                     cancelButtonTitle:@"取消"
                //                                                     otherButtonTitles:@"更新",nil];
                //                [alert show];
                
            }
        });
    });
}

-(NSComparisonResult)verseionCompare:(NSString*)curversion ver2compare:(NSString*)ver2compare{
    NSString* curV = [curversion stringByReplacingOccurrencesOfString:@"." withString:@""];
    NSString* V2cp = [ver2compare stringByReplacingOccurrencesOfString:@"." withString:@""];
    
    if ([curV integerValue] == [V2cp integerValue]) {
        return NSOrderedSame;
    }
    if ([curV integerValue] < [V2cp integerValue]) {
        return NSOrderedDescending;
    }
    if ([curV integerValue] > [V2cp integerValue]) {
        return NSOrderedAscending;
    }
    return NSOrderedSame;
}

#pragma mark - AlertView Delegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 0) {
        NSLog(@"quxiao");
    }else{
        NSLog(@"gengxin");

        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/cn/app/id%@",kShiperAppID]]];  
    }
}