iOS開發---獲取網路時間（百度時間）
- (NSDate *)getInternetDate{
NSString *urlString = @"http://m.baidu.com";
urlString = [urlString stringByAddingPercentEscapesUsingEncoding: NSUTF8StringEncoding];
// 例項化NSMutableURLRequest，並進行引數配置
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString: urlString]];
[request setCachePolicy:NSURLRequestReloadIgnoringCacheData];
[request setTimeoutInterval: 2];
[request setHTTPShouldHandleCookies:FALSE];
[request setHTTPMethod:@"GET"];
NSError *error = nil;
NSHTTPURLResponse *response;
[NSURLConnection sendSynchronousRequest:request
returningResponse:&response error:&error];
// 處理返回的資料
if (error) {
return [NSDate date];
}
NSString *date = [[response allHeaderFields] objectForKey:@"Date"];
date = [date substringFromIndex:5]；//index到這個字串的結尾
date = [date substringToIndex:[date length]-4];//從索引0到給定的索引index
NSDateFormatter *dMatter = [[NSDateFormatter alloc] init];
dMatter.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
[dMatter setDateFormat:@"dd MMM yyyy HH:mm:ss"];
NSDate *netDate = [[dMatter dateFromString:date] dateByAddingTimeInterval:60*60*8];//時間差8小時
NSTimeZone *zone = [NSTimeZone systemTimeZone];
NSInteger interval = [zone secondsFromGMTForDate: netDate];
netDate = [netDate dateByAddingTimeInterval: interval];
return netDate;
}