# CountDown

**Repository Path**: hongwing/CountDown

## Basic Information

- **Project Name**: CountDown
- **Description**: Simply implement the CountDown by UIPickerView and NSDateComponents
- **Primary Language**: Objective-C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2019-08-03
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# CountDown
### Simply implement the CountDown by UIPickerView and NSDateComponents


## My ideas
* Use the method     

	NSCalendar *calendar = [NSCalendar currentCalendar];
    unsigned unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | 	NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
   	``NSDateComponents *comp = [calendar components:unitFlags fromDate:_standardTime toDate:_destTime options:0];``

#### By this method , I can get How much the time distance between 2 dates.frankly,this method is the point to the countdown. 
##### (look  **details into demo**)
## Picture
![image](/Users/lister/Desktop/1.png)