获得现在的日期

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    //调用获得现在日期的函数。
    [self getDateFromLocal];
    
}
//获得现在的日期。格式:2015-03-11
-(NSString*)getDateFromLocal{
 
    NSDate *  senddate=[NSDate date];
    NSDateFormatter  *dateformatter=[[NSDateFormatter alloc] init];
    [dateformatter setDateFormat:@"YYYY-MM-dd"];
    NSString *  locationString=[dateformatter stringFromDate:senddate];
    NSLog(@"locationString:%@",locationString);
    return locationString;
    
}