我有一个带有多个 textField 的 scrollView，它跟踪活动字段并确保它在键盘弹出时可见。这一切都很好，但是当我从第 3 个到第 4 个 textField 进行选项卡时，在 textField 最终出现在正确的位置之前，我会上下“晃动”。有什么建议么？
-(void)keyboardDidShow:(NSNotification *)notification
{
if (keyboardIsShown)return;
NSDictionary* info=[notification userInfo];
// get keyboard size
CGSize keyboardSize=[[info objectForKey:UIKeyboardFrameBeginUserInfoKey]CGRectValue].size;
//Set scrollview insets to make room for keyboard
UIEdgeInsets contentInsets=UIEdgeInsetsMake(0.0, 0.0, keyboardSize.height, 0.0);
scrollView.contentInset=contentInsets;
scrollView.scrollIndicatorInsets=contentInsets;
//scroll the active text field into view
CGRect viewFrame=self.view.frame;
viewFrame.size.height-=keyboardSize.height;
int fieldHeight=self.currentTextField.bounds.size.height;
CGFloat navHeight=self.navigationController.navigationBar.frame.size.height;
CGPoint viewPoint=CGPointMake(0.0, self.currentTextField.frame.origin.y+fieldHeight);
if (!CGRectContainsPoint(viewFrame, viewPoint)) {
//scroll to make sure active field is showing
CGPoint scrollPoint=CGPointMake(0.0, viewPoint.y-keyboardSize.height+navHeight);//+navHeight
[scrollView setContentOffset:scrollPoint animated:YES];
}
}
-(void)showActiveField
{
//this makes sure that activeField shows when selecting another field after initial keyboard show
int fieldHeight=self.currentTextField.bounds.size.height;
CGPoint viewPoint=CGPointMake(0.0, self.currentTextField.frame.origin.y+fieldHeight);
CGRect viewFrame=self.view.frame;
int inset=scrollView.contentInset.bottom;
if (!CGRectContainsPoint(viewFrame, viewPoint)) {
//scroll to make sure active field is showing
CGPoint scrollPoint=CGPointMake(0.0, viewPoint.y-inset);
[scrollView setContentOffset:scrollPoint animated:YES];
}
}