Android Webview页面未正确加载页面

Question

I am trying to load a page into a android app webview using an Android Studio Emulator(Nexus 5). However, the page is not loading correctly and is stuck at the loading screen. The page does require GeoLocation permissions however I have them already enabled.

Below is my code and the XML for the app.

MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    WebView webview;
    setContentView(R.layout.activity_main);
    webview = (WebView)findViewById(R.id.help_webview);
    //webview use to call own site

    webview.setWebViewClient(new WebViewClient());
    webview.getSettings().setJavaScriptEnabled(true);
    webview.getSettings().setDomStorageEnabled(true);
    webview.getSettings().setAllowContentAccess(true);
    webview.getSettings().setAllowFileAccess(true);
    webview.getSettings().setAppCacheEnabled(true);
    webview.getSettings().setAllowUniversalAccessFromFileURLs(true);
    webview.getSettings().setAllowContentAccess(true);
    webview.getSettings().setGeolocationEnabled(true);
    webview.getSettings().setDatabaseEnabled(true);
    webview.setWebChromeClient(new WebChromeClient() {
        public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
            // callback.invoke(String origin, boolean allow, boolean remember);
            callback.invoke(origin, true, false);
        }
    });


    webview.loadUrl("https://lit-citadel-6989.herokuapp.com");
}

activity_main.xml

<WebView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/help_webview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:scrollbars="none"
    android:largeHeap="true" />

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.example.example" >
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" />
    <uses-permission android:name="android.permission.ACCESS_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />


    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

UPDATE: It's a geolocation issue for sure. I don't have a gps.config file. I can't seem to find a concrete way to create one or what I need for that. The javascript on the website to get the location is

navigator.geolocation.getCurrentPosition(function(location){
            setLatLng(location);
            locationLoaded = true;
            callback(lat,lng);
});

How can I then setup the webview in android to pass a user's current location?

Answer 1

There are other users using this approach and it works fine, the problem is that you are testing this on an emulator .

In order to get a working GPS/Location API on the emulator you can use the geo fix command.

You can use this GUI tool to easly set a fake GPS position on your emulator.

Detailed information about the geo fix command can be found here .

Answer 2

I implemented onConsoleMessage method (in WebChromeClient ) to see what's going on and got an error:

@Override
public boolean onConsoleMessage(android.webkit.ConsoleMessage consoleMessage) {
    Log("WebConsole: " + consoleMessage.message() + " [line:" + consoleMessage.lineNumber() + "]");
return true;
}

WebConsole: Uncaught SyntaxError: Unexpected token function [line:1]

Answer 3

Make sure that GPS is enabled for the Emulator. There is another question with an good tutorial for this: How to emulate GPS location in the Android Emulator?

Hope that helps.