Keyboard Scroll on Active Text Field - Scrolling to Out of View?

前端 未结 4 2038
庸人自扰
庸人自扰 2020-12-13 16:35

I have an application with a view that has text fields from the top of the view to the bottom of the view. I needed it to scroll when editing the bottom fields so that the f

4条回答
  •  轻奢々
    轻奢々 (楼主)
    2020-12-13 17:07

    UPDATE: Below answer is outdated. For now you can use "TPkeyboardavoiding" library for handle all kind of text field operation in UIScrollView, UITableView & many more. Try it and let me know if any one have a problem in integration.

    Old Answer

    There is no need to register for the keyboard notifications for this functionality. In order to center the active textField the screen above the keyboard, you only have to set the contentOffset of the UIscrollView two methods as shown here:

    // called when textField start editting.
    - (void)textFieldDidBeginEditing:(UITextField *)textField
    {
        activeField = textField;
        [scrollView setContentOffset:CGPointMake(0,textField.center.y-60) animated:YES];
    }
    
    
    
    // called when click on the retun button.
    - (BOOL)textFieldShouldReturn:(UITextField *)textField
    {
    
    
        NSInteger nextTag = textField.tag + 1;
        // Try to find next responder
        UIResponder *nextResponder = [textField.superview viewWithTag:nextTag];
    
        if (nextResponder) {
            [scrollview setContentOffset:CGPointMake(0,textField.center.y-60) animated:YES];
            // Found next responder, so set it.
            [nextResponder becomeFirstResponder];
        } else {
            [scrollview setContentOffset:CGPointMake(0,0) animated:YES];
            [textField resignFirstResponder];   
            return YES;
        }
    
        return NO; 
    }
    

    Note: All TextField should have incremental tags Like 1,2,3 and so no. And set delegates to self.

    Thanks,

提交回复
热议问题