Question

我想在点击UIWebview的返回键时找到解决方案！我尝试了以下链接，但它不起作用！

当用户在UIWebview上键入并按下返回键时，我想做一些偏移工作！

这是我正在使用的代码！

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSString* plainContent = @"Edit here.....";
    NSString* htmlContentString = [NSString stringWithFormat:
                                   @"<html>"
                                   "<body>"

                                   "<div id=\"content\" contenteditable=\"true\" style=\"font-family: Arial\">"
                                   "%@"
                                   "</div>"

                                   "</body></html>", plainContent];

    [_webview loadHTMLString:htmlContentString baseURL:nil];
}
- (BOOL)webView:(UIWebView*)aWebView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType{
    NSString *requestString = [[request URL] absoluteString];
    NSArray *components = [requestString componentsSeparatedByString:@":"];
    NSString *theTask = (NSString *)[components objectAtIndex:0];

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

Answer 1

为什么UIWebView, customize "return" key的答案不起作用？

我尝试并为我工作，我只将方法shouldStartLoadWithRequest:更改为：

- (BOOL)webView:(UIWebView*)aWebView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType{
    NSString *requestString = [[request URL] absoluteString];
    NSArray *components = [requestString componentsSeparatedByString:@":"];
    NSString *theTask = (NSString *)[components objectAtIndex:0];

    if([theTask isEqualToString:@"returnkeypressed"]){
        [aWebView endEditing:YES];
        return NO;
    }
    return YES;
}

另一种方法是使用缓冲区文本视图，例如我的answer来更改键盘。

编辑：您需要添加脚本来检测返回键：

NSString* plainContent = @"Edit here.....";

NSString* htmlContentString = [NSString stringWithFormat:
                               @"<html>"
                                "<head>"
                                    "<script>"
                                        "function returnKeyPressed(event){"
                                            "if(window.event.keyCode == 13)"
                                                "document.location = \"returnkeypressed:\";"
                                            "return true;"
                                        "}"
                                    "</script>"
                                "</head>"
                                "<body onKeyPress=\"return returnKeyPressed(event)\">"
                                    "<div id=\"content\" contenteditable=\"true\" style=\"font-family: Arial\">%@"
                                    "</div>"
                                "</body>"
                               "</html>",
                               plainContent];

Answer 2

在textView: shouldChangeTextInRange:

中插入此代码

if ([text isEqualToString:@"\n"]) {
    [textView resignFirstResponder];
    return NO;
}

UIWebview键盘返回键按下ios 7

2 个答案: