uiimageview - 如何在 uiimageview 上放置抖动动画？

Question

我一直在尝试实现这一点，但找不到任何可以在删除它们时像 iPhone 应用程序抖动一样抖动它的代码!

CABasicAnimation *animation = 
                         [CABasicAnimation animationWithKeyPath:@"position"];
[animation setDuration:0.05];
[animation setRepeatCount:8];
[animation setAutoreverses:YES];
[animation setFromValue:[NSValue valueWithCGPoint:
               CGPointMake([lockView center].x - 20.0f, [lockView center].y)]];
[animation setToValue:[NSValue valueWithCGPoint:
               CGPointMake([lockView center].x + 20.0f, [lockView center].y)]];
[[lockView layer] addAnimation:animation forKey:@"position"];

Answer 1

您可以通过以下代码实现此目的，您已经定义了从和到的旋转角度。

CABasicAnimation* anim = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
   [anim setToValue:[NSNumber numberWithFloat:0.0f]];
   [anim setFromValue:[NSNumber numberWithDouble:M_PI/16]]; // rotation angle
   [anim setDuration:0.1];
   [anim setRepeatCount:NSUIntegerMax];
   [anim setAutoreverses:YES];
   [[imageView layer] addAnimation:anim forKey:@"iconShake"];