iOS图标抖动效果

开始抖动

-(void)BeginWobble
{

    srand([[NSDate date] timeIntervalSince1970]);
    float rand=(float)random();
    CFTimeInterval t=rand*0.0000000001;

    [UIView animateWithDuration:0.1 delay:t options:0  animations:^
     {
         要抖动的视图.transform=CGAffineTransformMakeRotation(-0.05);
     } completion:^(BOOL finished)
     {
         [UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationOptionRepeat|UIViewAnimationOptionAutoreverse|UIViewAnimationOptionAllowUserInteraction  animations:^
          {
              要抖动的视图.transform=CGAffineTransformMakeRotation(0.05);
          } completion:^(BOOL finished) {}];
     }];
}

停止抖动

-(void)EndWobble
{

    [UIView animateWithDuration:0.1 delay:0 options:UIViewAnimationOptionAllowUserInteraction|UIViewAnimationOptionBeginFromCurrentState animations:^
     {
         要抖动的视图.transform=CGAffineTransformIdentity;
     } completion:^(BOOL finished) {}];
}