ios 使用ASIHTTPRequest来检查版本更新

- (void) alertWithTitle: (NSString *)_title_  msg:(NSString *)msg delegate:(id)_delegate cancelButtonTitle:(NSString*)_cancelTitle otherButtonTitles:(NSString*)_otherTitles{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:_title_
message:msg
delegate:_delegate
cancelButtonTitle:_cancelTitle
otherButtonTitles:_otherTitles,nil];
[alert show];
}

#pragma mark - update
-(void)checkUpdate{
MBKAppDelegate *mbkApp = (MBKAppDelegate *)[[UIApplication sharedApplication] delegate];
if (![mbkApp networkIsReach]) {
return;
}

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?id=%@",kAppId]];
ASIHTTPRequest *request =[ASIHTTPRequest requestWithURL:url];
[request setDelegate:self];
[request setDidFinishSelector:@selector(requestDone:)];
[request setDidFailSelector:@selector(requestWentWrong:)];
[request startSynchronous];
}

#pragma mark - asihttprequest
- (void)requestDone:(ASIHTTPRequest *)request
{
NSError *err = nil;
NSDictionary *dictionary =
[[CJSONDeserializer deserializer] deserializeAsDictionary:[request responseData] error:&err];
if (err != nil) {
[self failure];
return;
}
NSArray *a = [dictionary objectForKey:@"results"];
if (a.count == 0) {
[self failure];
return;
}
NSDictionary *d = [a objectAtIndex:0];
NSString *newVersion = [d objectForKey:@"version"];
NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];
NSString *nowVersion = [infoDict objectForKey:@"CFBundleVersion"];
NSString *msg = @"";
NSString *cancelTitle = @"";
NSString *otherTitles = @"";
if(![nowVersion isEqualToString:newVersion])
{
msg = @"版本有更新";
cancelTitle = @"取消";
otherTitles = @"更新";
}else{
msg = @"已经是最新版本啦";
cancelTitle = @"好";
otherTitles = nil;
}
[self alertWithTitle:nil msg:msg delegate:self cancelButtonTitle:cancelTitle otherButtonTitles:otherTitles];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if(buttonIndex==1){
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"https://itunes.apple.com/us/app/qun-xiang-dao/id%@?ls=1&mt=8",kAppId]];
[[UIApplication sharedApplication]openURL:url];
}
}

- (void)requestWentWrong:(ASIHTTPRequest *)request
{
[self failure];
}

- (void)failure{
[self alertWithTitle:nil msg:@"检查失败了" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil];
}

转：http://my.oschina.net/brucezcq/blog/148905