動畫addtosubview多個子視圖

Question

我有UIViews的數組，我想他們在格子狀的主視圖安排，我也希望它動畫（即電網應該會出現一個一個慢慢）。在for循環中嘗試了動畫，但沒有工作，但想出了一個更接近我想要的東西，但只是想知道是否有更好的方法來做到這一點。我知道CAAnimationGroup（begintime）有一些屬性，但確定如何將它連接到addtosubview。這裏是我的代碼，讓我知道是否有更好的方法來做到這一點。

#pragma mark - View lifecycle 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    CGFloat x = 0; 
    CGFloat delay = .3; 

    for(int i=0;i<30;i++) 
    { 
     UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(x, 0, 50, 50)]; 
     myView.backgroundColor = [UIColor greenColor]; 
     myView.alpha = 0.0; 
     x = x + 50+ 2; 
     [UIView animateWithDuration:0.25 delay:delay options:UIViewAnimationOptionCurveEaseInOut animations:^{ 
      [self.view addSubview:myView]; 
      myView.transform = CGAffineTransformMakeScale(0.5, 0.5); 
      // myView.transform = CGAffineTransformMakeRotation(90); 

     } completion:^(BOOL finished) { 

      [UIView animateWithDuration:.5 animations:^{ 
       myView.transform = CGAffineTransformMakeScale(1.0, 1.0); 
       myView.alpha = 1.0; 
      }]; 

     }]; 
     delay = delay + .3; 
    } 
    // Do any additional setup after loading the view, typically from a nib. 
} 

-anoop

Answer 1

您好，我也用動畫中的循環，但沒有奏效 正確，然後我將其稱爲動畫視圖的方法，多次 和它的工作正常。我認爲這是簡單應用 動畫的更好方法。通過調用一個方法。我在這裏放一些代碼可能會幫助你。

- (void)viewDidLoad 
{ 
    radius=82.097; 
    rotationMultiplier=1; 
    toAngle = fromAngle = 0; 
    toStart = NO; 
    center=CGPointMake(161, 233); 

    NSString *path = [[NSBundle mainBundle] pathForResource:@"click" ofType:@"mp3"]; 

    self.player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:nil]; 
    [self.player prepareToPlay]; 

    SingleTouchGesture *wheelRecogniser=[[SingleTouchGesture alloc] initWithTarget:self action:@selector(rotateWheel:)]; 
    [self.view addGestureRecognizer:wheelRecogniser]; 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)viewDidUnload 
{ 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
    // e.g. self.myOutlet = nil; 
} 

-(void) rotate:(int) time 
{ 
    CABasicAnimation *topAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"]; 
    topAnimation.duration=time; 
    topAnimation.fromValue= [NSNumber numberWithFloat:fromAngle]; 
    topAnimation.toValue=[NSNumber numberWithFloat:toAngle]; 
    topAnimation.delegate = self; 
    topAnimation.fillMode = kCAFillModeForwards; 
    topAnimation.removedOnCompletion = NO; 
    [wheelImage.layer addAnimation:topAnimation forKey:@"transform"]; 
    fromAngle = toAngle; 
} 


-(void) rotateWheel:(SingleTouchGesture*) recogniser 
{ 
    toAngle += recogniser.rotation; 

    if (toStart) 
    { 
     if (recogniser.state == UIGestureRecognizerStateEnded) 
     { 
      NSLog(@"Speed === %f",recogniser.speed); 
      rotationMultiplier=[self getMultiplier:recogniser.speed]; 
      NSLog(@"Rotation Multiplier..%f",rotationMultiplier); 
      toStart = NO; 
      NSLog(@"State Ended"); 
      self.player.currentTime=0; 
      [self.player play]; 

      if (recogniser.rotation>=0) 
      { 
       toAngle =fromAngle+(rotationMultiplier*3.14); 
      } 
      else 
      { 
       toAngle =fromAngle-(rotationMultiplier*3.14); 
      } 
     } 

     [self rotate:1]; 
    } 
    else 
    { 
     if (recogniser.state==UIGestureRecognizerStateChanged) { 
      NSLog(@"continue..."); 
      CGPoint pt=[recogniser locationInView:self.view]; 

      float dis=[recogniser distanceBetweenPoints:center with:pt]; 

      if (dis<radius) 
      { 
       if (recogniser.rotation>=0) 
       { 
        NSLog(@"Rotation value: +ve: %f",recogniser.rotation); 
        toStart = YES; 
        toAngle =fromAngle+(rotationMultiplier*3.14);   
        recogniser.rotation = 0; 
       } 
       else 
       { 
        NSLog(@"Rotation value: -ve: %f",recogniser.rotation); 
        toStart = YES; 
        toAngle=fromAngle-(rotationMultiplier*3.14);    
        recogniser.rotation = 0; 
       } 

      } 
     } 
    } 
} 

Here rotate method is calling multiple times.