Question

如何为iOS UILabel实现选框？

谢谢！

Answer 1

我不太确定，但我认为你必须按帧进行动画。当你设置标签的坐标时，把变量设置为x，y而不是参数1和2的值。并将其放入一个动画计时器，其值为x和y。

类似的代码，它也适用于图像，你也可以为标签做： -

// Build array of images, cycling through image names
  for (int i = 0; i < IMAGE_COUNT; i++)
    [imageArray addObject:[UIImage imageNamed:[NSString stringWithFormat:@"Frame_%d.jpg", i]]];

  // Animated images - centered on screen
  animatedImages = [[UIImageView alloc] 
     initWithFrame:CGRectMake(
        (SCREEN_WIDTH / 2) - (IMAGE_WIDTH / 2), 
        (SCREEN_HEIGHT / 2) - (IMAGE_HEIGHT / 2) + STATUS_BAR_HEIGHT,
        IMAGE_WIDTH, IMAGE_HEIGHT)];
  animatedImages.animationImages = [NSArray arrayWithArray:imageArray];

  // One cycle through all the images takes 1.5 seconds
  animatedImages.animationDuration = 1.0;

  // Repeat forever
  animatedImages.animationRepeatCount = -1;

  // Add subview and make window visible
  [window addSubview:animatedImages];
  [window makeKeyAndVisible];

  // Start it up
  animatedImages.startAnimating;

  // Wait 5 seconds, then stop animation
    [self performSelector:@selector(stopAnimation) withObject:nil afterDelay:1000];

我希望它可以帮助你...... :)

如何在iOS中制作Marquee UILabel？

1 个答案: