Question

我创建了一个使用webview访问HTML文件的android应用程序。这样做是为了使用JavaScriptInterface将2个javascript函数映射到2个本机android函数。这两个功能调出并解除了android软键盘。

当我最初测试该文件时，我在本地运行它并且它有效。从那时起，我将文件放在服务器上并更改了webview以通过服务器访问HTML文件。由于将它放在服务器上，因此不再调用javascript接口函数。

是否需要设置标志或我缺少的权限？我搜索无济于事。

这是HTML代码

<head id="Head1" runat="server">
<title>Login Page</title>
<script language="javascript" type="text/javascript">
    function capturePassword(event)
    {
        event = (event) ? event : window.event
        var charCode = (event.which) ? event.which : event.keyCode
        if (charCode == 13) {
        document.getElementById("password").focus();
        document.getElementById("password").click();

        }
    }
    function myFunction()
    {
        jsi.showKeyboard(); //this is a function in the webview android app which does not get called when the file is placed on the server
    }
    function hideKeyboardMaybe()
    {
        event = (event) ? event : window.event
        var charCode = (event.which) ? event.which : event.keyCode
        if (charCode == 13) {
            jsi.hideKeyboard(); //same here
        }
    }
</script>

</head>
<body>
      User name: <input type="number" id="fname" autofocus      onkeyup="capturePassword(event)"><br>
      Password: <input type="number" id="password" onfocus="myFunction()"     onkeyup="hideKeyboardMaybe(event)"><br>
</body>
</html>

这是webview代码

public class MainActivity extends Activity {

@SuppressLint("JavascriptInterface")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

final WebView mWebView=(WebView)findViewById(R.id.webView1);

mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setSaveFormData(true);
mWebView.getSettings().setBuiltInZoomControls(true);
JavaScriptInterface jsi = new JavaScriptInterface(this, mWebView);
mWebView.addJavascriptInterface(jsi, "jsi"); 

//setContentView(mWebView);
mWebView.loadUrl("file://"+ Environment.getExternalStorageDirectory() +     "/sippopup.html");
mWebView.requestFocus(View.FOCUS_DOWN);

}


public class JavaScriptInterface {
Context mContext;
WebView v;

/** Instantiate the interface and set the context */
JavaScriptInterface(Context c, WebView v) {
mContext = c;
this.v=v;

}


@JavascriptInterface
public void showKeyboard()
{

InputMethodManager inputMethodManager=    (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.showSoftInput(v, 0);

}

@JavascriptInterface
public void hideKeyboard()
{

InputMethodManager inputMethodManager=(InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(v.getApplicationWindowToken(), 0);

}
}



}

Answer 1

默认情况下，在WebViews中禁用JavaScript，您需要在代码中启用它。

WebView myWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);

JavaScriptInterface仅适用于本地HTML文件

1 个答案: