键盘到位后移动UIScrollView [英] Move UIScrollView when keyboard comes into place

问题描述

问题已经解决。我没有在 UIBuilder 中正确链接我的代理。代码很好！

The problem has been solved. I did not have my delegates linked properly in UIBuilder. Code is good!

我正在尝试在键盘出现时调整scrollview的大小。我去了开发人员文档并找到了这些信息。

I am trying to resize a scrollview when the keyboard appears. I went to the developer docs and found this information.

http://developer.apple.com/library/ios/#documentation/StringsTextFonts/ Conceptual / TextAndWebiPhoneOS / KeyboardManagement / KeyboardManagement.html＃// apple_ref / doc / uid / TP40009542-CH5-SW1

左侧管理键盘 。

在文档中，它显示了一些代码来检测键盘的大小，然后调整 UIScrollView 。我在函数的代码中放置了一个 NSLog 消息 - （void）keyboardWasShown：（NSNotification *）aNotification 所以我看到该函数实际被调用，但当我尝试 NSLog kbSize 。高度时，它总是被重视在0。

In the documentation it shows a bit of code to detect the size of the keyboard and then to resize a UIScrollView. I have placed an NSLog message in the code for function - (void)keyboardWasShown:(NSNotification*)aNotification so I see that the function is actually being called, but when I try to to NSLog the kbSize.height it is always valued at 0.

为什么苹果为此目的提供的代码不起作用？

Why does the code that apple provide for this purpose not work?

- (void)keyboardWasShown:(NSNotification*)aNotification
{
    NSDictionary* info = [aNotification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;

    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
    scrollView.contentInset = contentInsets;
    scrollView.scrollIndicatorInsets = contentInsets;

    // If active text field is hidden by keyboard, scroll it so it's visible
    // Your application might not need or want this behavior.
    CGRect aRect = self.view.frame;
    aRect.size.height -= kbSize.height;
    if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
        CGPoint scrollPoint = CGPointMake(0.0, activeField.frame.origin.y-kbSize.height);
        [scrollView setContentOffset:scrollPoint animated:YES];
    }
}

推荐答案

你可能想尝试强烈推荐的TPKeyboardAvoidingScrollView，可从以下网址获得： https://github.com/michaeltyson/TPKeyboardAvoiding

You may want to try the highly recommended "TPKeyboardAvoidingScrollView", available from: https://github.com/michaeltyson/TPKeyboardAvoiding

像魅力一样......

Works like a charm...

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