MZTimerLabel 用作秒表或者倒计时
https://github.com/mineschan/MZTimerLabel
A handy class for iOS to use UILabel as a countdown timer or stopwatch just like in Apple Clock App.
一个基于UILabel好用的倒计时或者秒表的类。
Purpose（目的）
MZTimerLabel is a UILabel subclass, which is a handy way to use UILabel as a countdown timer or stopwatch just like that in Apple Clock App with just 2 lines of code. MZTimerLabel also provides delegate method for you to define the action when the timer finished.
MZTimerLabel是一个UILabel的子类，两行代码就可以显示秒表效果。它提供代理来帮助你处理倒计时结束后的事件处理。
Auther: MineS Chan
Remark: This is my first iOS plugin project on github, please accept my apologize if any bad coding.
Requirements（要求）
- ARC
- iOS 5.0+
Installations（安装）
Manual
- Download or clone MZTimerLabel, add
MZTimerLabel.handMZTimerLabel.msouce files into your project.将文件夹MZTimerLabel拖入你的工程当中 #import "MZTimerLabel.h"whereever you need it.引入头文件
CocoaPods
(Unformilar with CocoaPods yet? It's a dependency management tool for iOS and Mac, check it out!)
- Add
pod 'MZTimerLabel', '~> 0.4.1'to your podfiles
Easy Example（简单示例）
To use MZTimerLabel as a stopwatch and counter, you need only 2 lines.
使用MZTimerLabel作为秒表或者定时器，你只需两行代码。
MZTimerLabel *stopwatch = [[MZTimerLabel alloc] initWithLabel:aUILabel];
[stopwatch start];
Easy? If you are looking for a timer, things is just similar.
so easy.如果你想使用一个定时器，一样的。
MZTimerLabel *timer = [[MZTimerLabel alloc] initWithLabel:aUILabel andTimerType:MZTimerLabelTypeTimer];
[timer setCountDownTime:60];
[timer start];
Now the timer will start counting from 60 to 0 ;)
现在，时间就会从60到0了。
Custom Appearance（自定义外观）
As MZTimerLabel is a UILabel subclass, you can directly allocate it as a normal UILabel and customizetimeLabel property just like usual.
由于MZTimerLabel是UILabel的子类，你可以直接alloc出来作为一个UILabel然后定制timeLabel属性即可。
MZTimerLabel *redStopwatch = [[MZTimerLabel alloc] init];
redStopwatch.frame = CGRectMake(100,50,100,20);
redStopwatch.timeLabel.font = [UIFont systemFontOfSize:20.0f];
redStopwatch.timeLabel.textColor = [UIColor redColor];
[self.view addSubview:redStopwatch];
[redStopwatch start];
MZTimerLabel uses 00:00:00 (HH:mm:ss) as time format, if you prefer using another format such as including milliseconds.Your can set your time format like below.
MZTimerLabel使用 00:00:00 作为时间格式，如果你想使用毫秒显示。你可以设置成下面的方式。
timerExample4.timeFormat = @"HH:mm:ss SS";
Control the timer（控制定时器）
You can start,pause,reset your timer with your custom control, set your control up and call these methods:
你可以开始，暂停，重设你的定时器：
-(void)start;
-(void)pause;
-(void)reset;
And you control the time at the begining or during runtime with these methods
在定时器开始时或者是启动后修改：
-(void)setCountDownTime:(NSTimeInterval)time;
-(void)setStopWatchTime:(NSTimeInterval)time;
-(void)setCountDownToDate:(NSDate*)date;
-(void)addTimeCountedByTime:(NSTimeInterval)timeToAdd;
Timer Finish Handling（倒计时结束后的控制）
Usually when you need a timer, you need to deal with it after it finished counting. Following are 2 examples showing how to do it using delegate and block methods.
通常你要定时器，是为了结束后能处理一下时间。下面有两个例子来，一个用代理实现，一个用block来实现。
Delegate
First, set the delegate of the timer label.
首先设置代理
timer.delegate = self;
And then implement MZTimerLabelDelegate protocol in your dedicated class
然后实现 MZTimerLabelDelegate 协议
@interface ViewController : UIViewController<MZTimerLabelDelegate>
Finally, implement the delegate method timerLabel:finshedCountDownTimerWithTimeWithTime:
最后，实现代理方法 timerLabel:finshedCountDownTimerWithTimeWithTime:
-(void)timerLabel:(MZTimerLabel*)timerLabel finshedCountDownTimerWithTime:(NSTimeInterval)countTime{
//time is up, what should I do master?
}
Blocks
Block is a very convenient way to handle the callbacks, MZTimerLabel makes your life even easier.
使用block非常便利，MZTimerLabel让你无比轻松。
MZTimerLabel *timer = [[MZTimerLabel alloc] initWithLabel:aUILabel andTimerType:MZTimerLabelTypeTimer];
[timer3 setCountDownTime:60];
[timer startWithEndingBlock:^(NSTimeInterval countTime) {
//oh my god it's awesome!!
}];
