pop 或者push一个viewController时候 会有键盘闪现出来 又消失

1 大神a说： iOS 8.3，dismiss alert view时系统会尝试恢复之前的keyboard input

2 大神b说：你要等键盘完全收起之后再pop或者push。直接dispatch_after个0.25秒再执行pop或者push。至于为什么是0.25秒，因为系统键盘收起的duration就是0.25秒。别问我怎么知道的。

反正我的解决办法是： [self performSelector:@selector(xxx) withObject:nil afterDelay:0.25]; 0.25秒后再pop，或者干啥干啥

1. 在这边去掉键盘

- (void)viewWillDisappear

{

[super viewWillDisappear:YES];

[self resignTextResponder];

}

2.调用这个performSelector 延时加载

#pragma mark - UIAlertViewDelegate

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

[self resignTextResponder];

if (buttonIndex == 0)

{

}

else if (buttonIndex == 1)

{

[self performSelector:@selector(pushListViewController) withObject:nil afterDelay:0.25];

}

}

- (void)pushGoodsSourceListViewController

{

ListViewController *ListViewController = [[ListViewController alloc] init];

[self.navigationController pushViewController:ListViewController animated:YES];

}