当iPad虚拟键盘出现时,它会覆盖我视图中的一些文本字段。有没有办法在键盘出现时向上移动ViewController?。
答案 0 :(得分:7)
我为我的一个应用程序编写了这段代码。
它会自动检测TextField的位置,并相应地滚动baseView。
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
[self animateTextField:textField up:YES];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
[self animateTextField:textField up:NO];
}
- (void) animateTextField: (UITextField*) textField up: (BOOL) up
{
CGPoint temp = [textField.superview convertPoint:textField.frame.origin toView:nil];
UIInterfaceOrientation orientation =
[[UIApplication sharedApplication] statusBarOrientation];
if (orientation == UIInterfaceOrientationPortrait){
if(up) {
int moveUpValue = temp.y+textField.frame.size.height;
animatedDis = 264-(1024-moveUpValue-5);
}
}
else if(orientation == UIInterfaceOrientationPortraitUpsideDown) {
if(up) {
int moveUpValue = 1004-temp.y+textField.frame.size.height;
animatedDis = 264-(1004-moveUpValue-5);
}
}
else if(orientation == UIInterfaceOrientationLandscapeLeft) {
if(up) {
int moveUpValue = temp.x+textField.frame.size.height;
animatedDis = 352-(768-moveUpValue-5);
}
}
else
{
if(up) {
int moveUpValue = 768-temp.x+textField.frame.size.height;
animatedDis = 352-(768-moveUpValue-5);
}
}
if(animatedDis>0)
{
const int movementDistance = animatedDis;
const float movementDuration = 0.3f;
int movement = (up ? -movementDistance : movementDistance);
[UIView beginAnimations: nil context: nil];
[UIView setAnimationBeginsFromCurrentState: YES];
[UIView setAnimationDuration: movementDuration];
if (orientation == UIInterfaceOrientationPortrait){
baseViewController.view.frame = CGRectOffset(baseViewController.view.frame, 0, movement);
}
else if(orientation == UIInterfaceOrientationPortraitUpsideDown) {
baseViewController.view.frame = CGRectOffset(baseViewController.view.frame, 0, movement);
}
else if(orientation == UIInterfaceOrientationLandscapeLeft) {
baseViewController.view.frame = CGRectOffset(baseViewController.view.frame, 0, movement);
}
else {
baseViewController.view.frame = CGRectOffset(baseViewController.view.frame, 0, movement);
}
[UIView commitAnimations];
}
}
答案 1 :(得分:1)
我的建议是将对象放在UIScrollView
上,然后当键盘出现时,您可以使用scrollRectToVisible:
。
[scroller scrollRectToVisible:frame animated:YES];
答案 2 :(得分:1)
当up = NO时,请将ValayPatel代码“if”语句更改为if(animatedDis>0 || !up)
,否则移位视图始终位于上一个位置。