AndroidのWebViewでgeoloactionを使用する

###位置情報取得用のパーミッションを追加

 <!-- 位置情報取得 -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

###WebViewClient,WebChromeClientの設定

import android.webkit.GeolocationPermissions.Callback;

public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setConsentView(R.layout.main);
    webView = (WebView)findViewById(R.id.webView);
    webView.setWebViewClient(new WebViewClient(){
        @Override
        public boolean shouldOverrideUrLoading(WebView view, String url){
            return false;
        }
    });
    webView.setWebChromeClient(new WebChromeClient(){
        @Override
        public void onGeolocationPermissionsShowPrompt(String origin, Callback callback){
            callback.invoke(origin, true, false);
        }
    });
    WebViewSettings settings = webView.getSettings();
    settings.setJavaScriptEnabled(true);
    settings.setGeolocationEnabled(true);

    webView.loadUrl("http://~~~");
}