Question

I am having some problems getting this animation to execute. I have a feeling there are probably a few problems with it, but am having trouble finding the right direction. I would like to pulse (scale up and down) a CATextLayer while the user is dragging a UISlider control.

在“国际行动”方法之外,我有以下法典。我已进行了检查,以确保实际使用这种方法。

CABasicAnimation *pulse = [CABasicAnimation animationWithKeyPath:@"scale"];
pulse.fromValue = [NSNumber numberWithFloat:1.0];
pulse.toValue = [NSNumber numberWithFloat:1.2];
pulse.duration = 1;
pulse.repeatCount = HUGE_VALF;
pulse.autoreverses = YES;
pulse.timingFunction =[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[self.symbolLayer addAnimation:pulse forKey:nil];

我已经注意到,这一方法一再被称作非常快,但并不确定这是否阻止了im的发生,或者存在 block灭本身的问题。

Answer 1

请更正<代码>contentScale property。在CAText Layer没有~/code> 财产。

或者,我发现,对<代码>fontSize的估算似乎给我更多的影响。它从该中心抽取案文,而点码则似乎从角逐物之一处删除。

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