如何检测键盘输入键？ | 如何检测键盘输入键

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问题描述

我有 UIWebView ，因为我允许在运行时进行编辑。

I have on UIWebView in that i am allowing editing at runtime.

现在当我点击 UIWebView 然后iPad键盘打开写入，
现在我的要求是如何检测我点击了iPad键盘的输入键？。

Now when i click on UIWebView then iPad keyboard opens for writing,now my requirement is how to detect that I have clicked on enter key of iPad keyboard?.

我知道如果我们在 UITextView 或 UITextField 中进行编辑，我们可以实现这一点使用它的委托。帮助我！

I know that we can achieve this if we are editing in UITextView or UITextField with using it's delegates.Help me!

我在javascript中有一个检测它的函数。

I have one function in javascript that detects it.

function returnEnterPress(e){
    var key;
     if(window.event)
          key = window.event.keyCode; //IE
     else
          key = e.which; //firefox
          // ENTER KEY MUNBER IS 13 // KD
     if(key == 13)
     {
        //alert('enter');
     }
     return false;
}

现在可以使用objective-c代码调用它并获得返回值喜欢真假吗？

Now can i get call it using objective-c code and can get return value like true or false?

推荐答案

我通过这样的javascript完成了我的工作......

I done my work by javascript like this...

在HTML文件中

function returnEnterPress(e){
     var key;
     if(window.event)
          key = window.event.keyCode; //IE
     else
          key = e.which; //firefox
          // ENTER KEY MUNBER IS 13 // KD
     if(key == 13)
     {
        window.location.href = 'enterClicked/0';
     }
     else
     {
         var range = window.getSelection().getRangeAt(0).endOffset;
         if(range == 0)
         {
            window.location.href = 'enterClicked/'+range;
         }
     }
     return true;
}

<body onKeyPress="return returnEnterPress(event)">

在我的Objective-c代码中

In my Objective-c Code

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{

    if([[[request URL] absoluteString] rangeOfString:@"enterClicked"].location!=NSNotFound)    // When "enterClicked" found
    {
        //Do your desired work
        return NO;
    }
}

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