Multi JS Listener for android webview

MobileAppInterface.java

package ***;

import android.net.Uri;
import android.webkit.JavascriptInterface;
import android.webkit.WebView;
import android.widget.Toast;

import androidx.annotation.NonNull;

import java.util.HashMap;
import java.util.Map;

/**
 * EXAMPLE USAGE:
 *
 * MobileAppInterface.ActionHander actionHander = new MobileAppInterface.ActionHander() {
 *     @Override
 *     public void run(String query) {
 *         WalletPaymentActivity.this.finish();
 *         startActivity(new Intent(WalletPaymentActivity.this, TransactionActivity.class));
 *     }
 * };
 *
 * MobileAppInterface.injectToWebView(webview);
 * MobileAppInterface.addNewActionMap("/webview/close", actionHander);
 * MobileAppInterface.addNewActionMap("/transaction/open", actionHander);
 */
public class MobileAppInterface {

    public static final String ROOT_INTERFACE_NAME_ALT = "Android";
    public static final String ROOT_INTERFACE_NAME = "MobileApp";
    public static final String KNOWN_SCHEME = "myOwnApplicationName";
    public static final String KNOWN_HOST = "mobile.app";


    private final static Map<String, ActionHander> actionMaps = new HashMap<>();
    private WebView mWebView;

    public interface ActionHander {
        void run(String query);
    }

    public static void addNewActionMap(@NonNull String path, @NonNull ActionHander handler) {
        actionMaps.put(path, handler);
    }

    public static void removeHandler(String path) {
        actionMaps.remove(path);
    }

    /**
     * Instantiate the interface and set the context
     */
    public MobileAppInterface(WebView c) {
        mWebView = c;
    }

    public static void injectToWebView(WebView webView) {
        MobileAppInterface mobileAppInterface = new MobileAppInterface(webView);
        webView.addJavascriptInterface(mobileAppInterface, ROOT_INTERFACE_NAME_ALT);
        webView.addJavascriptInterface(mobileAppInterface, ROOT_INTERFACE_NAME);
    }

    /**
     * Show a toast from the web page
     */
    @JavascriptInterface
    public void showToast(String toast) {
        Toast.makeText(mWebView.getContext(), toast, Toast.LENGTH_SHORT).show();
    }

    @JavascriptInterface
    public void action(String uri) {

        Uri webUri = null;
        try {
            webUri = Uri.parse(uri);
        } catch (Exception ignore) {
        }

        if (webUri == null) return;
        handlePathAction(webUri);

    }

    void handlePathAction(Uri uri) {
        if (!KNOWN_SCHEME.equals(uri.getScheme())) return;
        if (!KNOWN_HOST.equals(uri.getHost())) return;
        if (actionMaps.containsKey(uri.getPath()))
            actionMaps.get(uri.getPath()).run(uri.getQuery());
    }
}