如何让函数暂停，直到NSTimer选择器完成？

我在另一个函数中有一个NSTimer，但我希望能够等待NSTimer在继续执行代码之前失效，是否有办法做到这一点？如何让函数暂停，直到NSTimer选择器完成？

- (IBAction)addLifePoints:(UIButton *)sender 
{ 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] setLifePointDelta:[NSNumber numberWithInt: [self.hiddenTextField.text intValue]]]; 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] setAddOrSubstract: YES]; 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] applyingDeltaToLifePointsByDelta]; 

    // This will animate the life points 
    animationTimer = [NSTimer scheduledTimerWithTimeInterval:.01 target:self selector:@selector(animateLifePoints) userInfo:nil repeats:YES]; 


    // This is where we bring it back to the view controller 
    self.duelistOneLifePoints.text = [[ARCHDuelCalculator sharedARCHDuelCalculator].duelistOneLifePoints stringValue]; 
    self.duelistTwoLifePoints.text = [[ARCHDuelCalculator sharedARCHDuelCalculator].duelistTwoLifePoints stringValue]; 

    self.hiddenTextField.text = @""; 
    [self syncTextField: self.hiddenTextField]; 
    [self.hiddenTextField resignFirstResponder]; 
} 

    - (void) animateLifePoints 
{ 
    NSNumber *sections = [[ARCHDuelCalculator sharedARCHDuelCalculator] getLifePointSections]; 

    for(int timer = 0; timer < 100; ++timer) 
    { 
     self.duelistOneLifePoints.text = [[[ARCHUtilities sharedARCHUtilities] subtractTwoNSNumbersByDataType:@"int" firstNumber:[NSNumber numberWithInt: [self.duelistOneLifePoints.text intValue]] secondNumber:sections] stringValue]; 

     if ((timer % 14) == 0) 
     { 
      [self playLifePointSound:@"mainLifePointSound" typeOfFile:@"mp3"]; 
     } 

    } 

    [animationTimer invalidate]; 
}

来源

2013-09-24 Michael Choi

你必须让代码无效的定时器启动另一个动作。 –

恐怕我不明白 –

我对代码感到困惑：你创建一个重复的定时器，让它只发一次，然后立即取消它。这是否准确？如果是这样，为什么明确地创建一个计时器呢？即使你想要，为什么创建一个重复计时器，如果你不想重复？ – Tommy

希望这个作品：

-split addLifePoints成2种方法。后

-put代码在另一种方法（newMethod）

-call newMethod所述的NSTimer被无效后右侧的NSTimer。

- (IBAction)addLifePoints:(UIButton *)sender 
    { 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] setLifePointDelta:[NSNumber numberWithInt:   [self.hiddenTextField.text intValue]]]; 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] setAddOrSubstract: YES]; 
    [[ARCHDuelCalculator sharedARCHDuelCalculator] applyingDeltaToLifePointsByDelta]; 

    // This will animate the life points 
     animationTimer = [NSTimer scheduledTimerWithTimeInterval:.01 target:self selector:@selector(animateLifePoints) userInfo:nil repeats:YES]; 
    } 

    - (void) animateLifePoints 
    { 
    NSNumber *sections = [[ARCHDuelCalculator sharedARCHDuelCalculator] getLifePointSections]; 

    for(int timer = 0; timer < 100; ++timer) 
     { 
     self.duelistOneLifePoints.text = [[[ARCHUtilities sharedARCHUtilities] subtractTwoNSNumbersByDataType:@"int" firstNumber:[NSNumber numberWithInt: [self.duelistOneLifePoints.text intValue]] secondNumber:sections] stringValue]; 

     if ((timer % 14) == 0) 
     { 
      [self playLifePointSound:@"mainLifePointSound" typeOfFile:@"mp3"]; 
     } 
    } 

    [animationTimer invalidate]; 
    [self newMethod]; //////////////////// ADD THIS LINE ALSO, continue code 
    } 

    -(void)newMethod{ 
     //...so continue code... 
     // This is where we bring it back to the view controller 
     self.duelistOneLifePoints.text = [[ARCHDuelCalculator sharedARCHDuelCalculator].duelistOneLifePoints stringValue]; 
     self.duelistTwoLifePoints.text = [[ARCHDuelCalculator sharedARCHDuelCalculator].duelistTwoLifePoints stringValue]; 

     self.hiddenTextField.text = @""; 
     [self syncTextField: self.hiddenTextField]; 
     [self.hiddenTextField resignFirstResponder]; 
    }

来源

2013-09-24 04:09:15 codeblue009

如何让函数暂停，直到NSTimer选择器完成？

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