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POiOS scrollView setContentOffset "shimmy"
 

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  1. POiOS scrollView setContentOffset "shimmy"
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    <p>I have a scrollView with multiple textFields, which tracks the active field and makes sure it is visible when the keyboard pops up. It all works well, but when I tab from the 3rd to 4th textField, I get a little up and down "shimmy" before the textField ends up in the right place. Any suggestions?</p> <pre><code>-(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]; } } </code></pre>
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