简化工作与定时器的交互。

特性

• 基于block
• block中不保留self引用
• 无需手动使定时器失效，定时器将与self一起被释放

用法

启动

      WEAK_TIMER_ONCE(seconds, block_body);   // no repeat timer
      WEAK_TIMER_REPEAT(seconds, block_body); // repeat timer

停止

      WEAK_TIMER_STOP(timerToken);        // stop timer with token
      WEAK_TIMER_STOP_ALL();              // stop all timers

示例

1. 启动循环定时器，它会与self一起被释放

   - (void)viewDidLoad {
       [super viewDidLoad];
   
       WEAK_TIMER_REPEAT(1, {
           self.value++;
       });
   }
   

2. 将定时器token保存起来，稍后可以手动停止定时器

   // @property (nonatomic) id timerToken;
   -(void)viewDidAppear:(BOOL)animated {
       [super viewDidAppear:animated];
       self.timerToken = WEAK_TIMER_ONCE(5, {
           NSLog(@"5 sec elapsed");
       });
   }
   -(void)viewWillDisappear:(BOOL)animated {
       [super viewWillDisappear:animated];
       WEAK_TIMER_STOP(self.timerToken);
   }
   

   如果只使用一个定时器或者您需要停止所有定时器，则token不是必需的

   -(void)viewDidAppear:(BOOL)animated {
       [super viewDidAppear:animated];
       WEAK_TIMER_ONCE(5, {
           NSLog(@"5 sec elapsed");
       });
   }
   -(void)viewWillDisappear:(BOOL)animated {
       [super viewWillDisappear:animated];
       WEAK_TIMER_STOP_ALL();
   }