Solve the problem that the keyboard blocks the input box. The keyboard blocks the input box.

Solve the problem that the keyboard blocks the input box. The keyboard blocks the input box.
1) First, follow the protocol UITextFieldDelegate @ interface userInfoViewController () <UITextFieldDelegate> 2) set the proxy (the following self is the parent view of the input box) textField. delegate = self; 3) implement the three methods of UITextFieldDelegate:-(BOOL) textFieldShouldReturn :( UITextField *) textField {
[TextField resignFirstResponder];
Return YES;
}/*** The following is a full-screen view. The view has a sub-control textField. ***/-(void) textFieldDidBeginEditing :( UITextField *) textField {CGRect frame = textField. frame; int offset = frame. origin. y + 32-(self. frame. size. height-256.0); // The keyboard height is 256, and the textField height is 32.
NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations: @ "ResizeForKeyboard" context: nil];
[UIView setAnimationDuration: animationDuration];

// Move the Y coordinate of the view to the offset Unit so that the following space is used for the display of the soft keyboard.
If (offset> 0)
Self. frame = CGRectMake (0.0f,-offset, self. frame. size. width, self. frame. size. height );
[UIView commitAnimations];}-(void) textFieldDidEndEditing :( UITextField *) textField {self. frame = CGRectMake (0, 0, self. frame. size. width, self. frame. size. height);}/*** a full-screen view with tableView. Each tableViewCell has a sub-control textField. ***/-(void) textFieldDidBeginEditing :( UITextField *) textField
{
CGRect frame = textField. frame;

Int index = (int) (textField. tag-0x1000 );

// 30 is the height of textField, (index-1) is the first few cells, 90 is the y of tableView, that is, the bottom of the input box is from self. view height minus the top of the keyboard from self. view height
Int offset = frame. origin. y + (index-1) * 50 + 30 + 90-(self. view. frame. size. height-256.0); // The keyboard height is 256.

NSTimeInterval animationDuration = 0.30f;
[UIView beginAnimations: @ "ResizeForKeyboard" context: nil];
[UIView setAnimationDuration: animationDuration];

// Move the Y coordinate of the view to the offset Unit so that the following space is used for the display of the soft keyboard.
If (offset> 0)
Self. infoList. frame = CGRectMake (10.0f, 90-offset, self. infoList. frame. size. width, self. infoList. frame. size. height );

[UIView commitAnimations];
}

-(Void) textFieldDidEndEditing :( UITextField *) textField
{
Self. infoList. frame = CGRectMake (10, 90, [UIScreen mainScreen]. bounds. size. width-20,300);} effect: