NSTimeZone小结

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NSDate *date = [NSDate date];
   NSLog(@"date:%@",date);
    //系统时区
    NSTimeZone*zone = [NSTimeZone systemTimeZone];
    NSData *data= [zone data];
   NSLog(@"data:%@",data);
    //时间缩写
    NSString*abbStr = [zone abbreviation];
   NSLog(@"abbStr:%@",abbStr);
    //当地时区
    NSTimeZone*localTime = [NSTimeZone localTimeZone];
   NSLog(@"localTime:%@",localTime);
   //和格林尼治时间差
    NSIntegertimeOff = [zone secondsFromGMT];
    //视察转化
    NSDate*timeOffDate = [date dateByAddingTimeInterval:timeOff];
   NSLog(@"timeOffDate:%@",timeOffDate);
   //所有地区名称
    NSArray*zoneArrs = [NSTimeZone knownTimeZoneNames];
   NSLog(@"zoneArrs:%@",zoneArrs);
    //遍历
    for(NSString *names in zoneArrs) {
       //时区
      NSTimeZone *timeZone = [[NSTimeZone alloc]initWithName:names];
       //设置格式
      NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
       [dateFormatter setDateStyle:kCFDateFormatterFullStyle];
       [dateFormatter setTimeZone:timeZone];
        NSString *string = [dateFormatter stringFromDate:date];
       NSLog(@"string:%@,[timeZone name]:%@",string,[timeZonename]);
       [dateFormatter release];
       [timeZone release];
    }

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