像輪子動畫一樣旋轉圖像並在隨機位置停止

Question

我正在創建一個遊戲，其中的骰子動作顯示在一個圓圈中。當用戶單擊輪子時，它會旋轉並停在隨機位置。 我搜索，發現一些代碼，我試圖實現，如： -

[UIView beginAnimations:@"RotationAnimation" context:nil]; 
CALayer *myLayer = diceCircle.layer; 
    CABasicAnimation *fullRotationAnimation; 
    fullRotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"]; 
    fullRotationAnimation .fromValue = [NSNumber numberWithFloat:0]; 
    // fullRotationAnimation.toValue = [NSNumber numberWithFloat:((360*M_PI)/180)]; 
    fullRotationAnimation.toValue = [NSNumber numberWithFloat:angle]; 

    fullRotationAnimation.duration = 0.5;   // speed for the rotation. Smaller number is faster 
    fullRotationAnimation.repeatCount = 1; // number of times to spin. 1 = once 
    [myLayer addAnimation:fullRotationAnimation forKey:@"360"]; 

    [UIView commitAnimations]; 

角度是來自： -

-(IBAction)diceButtonClicked:(id)sender 
{ 
    float angle=arc4random()%360; 
    NSLog(@"%f",angle); 
    float rad=radians(angle); 
    NSLog(@"%f",rad); 
    [self rotateDiceMethod:rad]; 
} 

但車輪停在同一位置，每次也並不總是動畫。請爲我提供一些方法或示例代碼來實現所需的功能。

在此先感謝！

Answer 1

這是我爲同一任務的舊代碼：

CGFloat randValue= arc4random() % 10; 
self.angleRotate = (randValue+30); 
CABasicAnimation *spinAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"]; 
spinAnimation.fromValue = [NSNumber numberWithFloat:self.angle]; 
spinAnimation.toValue = [NSNumber numberWithFloat:self.angle+self.angleRotate]; 
spinAnimation.duration = 2.0f; 
spinAnimation.cumulative = YES; 
spinAnimation.additive = YES; 
spinAnimation.removedOnCompletion = NO; 
spinAnimation.delegate = self; 
spinAnimation.timingFunction = [CAMediaTimingFunction 
      functionWithName:kCAMediaTimingFunctionEaseOut]; 
spinAnimation.fillMode = kCAFillModeForwards; 
[self.arrow.layer addAnimation:spinAnimation forKey:@"spinAnimation"]; 

和旋轉停止時

- (void)animationDidStop:(CAAnimation *)spinAnimation finished:(BOOL)flag{ 
    self.angle += self.angleRotate; 
    while (self.angle >= M_PI*2.0) { 
     self.angle -= M_PI*2.0; 
    } 
    NSLog(@"angleRotate value is: %f", self.angleRotate); 
    NSLog(@"angle value is: %f", self.angle); 
    self.angleRotate = 0; 
}