CABasicAnimation 一直不工作
CABasicAnimation not working all the time
我有下面的代码,应该提供视图“摇晃”的效果,然后通过向上滑出屏幕来消除它。
有时完美呈现,但大多数时候摇动动画不显示,视图只是向上滑动。我不知道可能是什么问题:
CABasicAnimation *animation =
[CABasicAnimation animationWithKeyPath:@"position"];
[animation setDuration:0.05];
[animation setRepeatCount:8];
[animation setAutoreverses:YES];
[animation setFromValue:[NSValue valueWithCGPoint:
CGPointMake([[self editView] center].x - 20.0f, [[self editView] center].y)]];
[animation setToValue:[NSValue valueWithCGPoint:
CGPointMake([[self editView] center].x + 20.0f, [[self editView] center].y)]];
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction begin]; {
[CATransaction setCompletionBlock:^{
[UIView animateWithDuration:0.4f delay:0.7 options:UIViewAnimationOptionTransitionNone animations:^{
_editView.center = CGPointMake(self.navigationController.view.bounds.size.width / 2, 0 - 380);
[_textView resignFirstResponder];
[_tint setAlpha:0];
} completion:^(BOOL finished) {
[_editView removeFromSuperview];
[_tint removeFromSuperview];
}];
}];
} [CATransaction commit];
您唯一需要做的改变是重新放置:
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction commit];
.
右上方
这样,就变成了:
[CATransaction begin];
{
[CATransaction setCompletionBlock:^
{
[UIView animateWithDuration:0.4f delay:0.7f options:UIViewAnimationOptionTransitionNone animations:^
{
_editView.center = CGPointMake(self.navigationController.view.bounds.size.width / 2.0f, -380.0f);
[_textView resignFirstResponder];
[_tint setAlpha:0];
}
completion:^(BOOL finished)
{
[_editView removeFromSuperview];
[_tint removeFromSuperview];
}];
}];
}
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction commit];
然后,摇动部分将首先发生,然后才开始按照您的意愿向上动画。
我有下面的代码,应该提供视图“摇晃”的效果,然后通过向上滑出屏幕来消除它。
有时完美呈现,但大多数时候摇动动画不显示,视图只是向上滑动。我不知道可能是什么问题:
CABasicAnimation *animation =
[CABasicAnimation animationWithKeyPath:@"position"];
[animation setDuration:0.05];
[animation setRepeatCount:8];
[animation setAutoreverses:YES];
[animation setFromValue:[NSValue valueWithCGPoint:
CGPointMake([[self editView] center].x - 20.0f, [[self editView] center].y)]];
[animation setToValue:[NSValue valueWithCGPoint:
CGPointMake([[self editView] center].x + 20.0f, [[self editView] center].y)]];
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction begin]; {
[CATransaction setCompletionBlock:^{
[UIView animateWithDuration:0.4f delay:0.7 options:UIViewAnimationOptionTransitionNone animations:^{
_editView.center = CGPointMake(self.navigationController.view.bounds.size.width / 2, 0 - 380);
[_textView resignFirstResponder];
[_tint setAlpha:0];
} completion:^(BOOL finished) {
[_editView removeFromSuperview];
[_tint removeFromSuperview];
}];
}];
} [CATransaction commit];
您唯一需要做的改变是重新放置:
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction commit];
.
这样,就变成了:
[CATransaction begin];
{
[CATransaction setCompletionBlock:^
{
[UIView animateWithDuration:0.4f delay:0.7f options:UIViewAnimationOptionTransitionNone animations:^
{
_editView.center = CGPointMake(self.navigationController.view.bounds.size.width / 2.0f, -380.0f);
[_textView resignFirstResponder];
[_tint setAlpha:0];
}
completion:^(BOOL finished)
{
[_editView removeFromSuperview];
[_tint removeFromSuperview];
}];
}];
}
[[[self editView] layer] addAnimation:animation forKey:@"position"];
[CATransaction commit];
然后,摇动部分将首先发生,然后才开始按照您的意愿向上动画。