Support Set Javascript Interface

[ccrazycoder]

It would be better if you add support to add JSInterface callback. As in my requirement, I need that to get back values from Webpage.

[seyyedmojtaba72]

You have to create your custom classes that extend FinestWebView classes. You're welcome to use mine:

package com.peykfood.android.util;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.webkit.JavascriptInterface;

import androidx.annotation.NonNull;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;

import com.peykfood.android.WebActivity;
import com.thefinestartist.finestwebview.FinestWebView;
import com.thefinestartist.finestwebview.FinestWebViewActivity;
import com.thefinestartist.finestwebview.listeners.BroadCastManager;

import java.io.Serializable;

public class MyFinestWebView extends FinestWebView {
    public static class Builder extends FinestWebView.Builder{

        public static final String INTENT_NEW_JS_INTERFACE = "NEW_JS_INTERFACE";

        public Builder(@NonNull Activity activity) {
            super(activity);
        }

        public Builder(@NonNull Context context) {
            super(context);
        }

        protected void show(String url, String data) {
            this.url = url;
            this.data = data;
            this.key = System.identityHashCode(this);

            if (!listeners.isEmpty()) new BroadCastManager(context, key, listeners);

            Intent intent = new Intent(context, WebActivity.class);
            intent.putExtra("builder", this);

            this.context.startActivity(intent);

            if (context instanceof Activity)
                ((Activity) context).overridePendingTransition(animationOpenEnter, animationOpenExit);
        }

        public void addJSInterface(JavascriptInterface javascriptInterface){
            Intent intent = new Intent(INTENT_NEW_JS_INTERFACE);
            intent.putExtra("interface", (Serializable)javascriptInterface);
            LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
        }
    }
}

public class WebActivity extends com.thefinestartist.finestwebview.FinestWebViewActivity {
    public WebView getWebView() {
        return this.webView;
    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState, @Nullable PersistableBundle persistentState) {
        super.onCreate(savedInstanceState, persistentState);

        BroadcastReceiver receiver = new BroadcastReceiver() {
            @SuppressLint("JavascriptInterface")
            @Override
            public void onReceive(Context context, Intent intent) {
                if (intent.getAction().equals(MyFinestWebView.Builder.INTENT_NEW_JS_INTERFACE)) {
                    webView.addJavascriptInterface((JavascriptInterface) intent.getSerializableExtra("interface"), "interface");
                }
            }
        };

        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(MyFinestWebView.Builder.INTENT_NEW_JS_INTERFACE);
        LocalBroadcastManager.getInstance(getBaseContext()).registerReceiver(receiver, intentFilter);
    }
}

Usage:

MyFinestWebView.Builder builder = new MyFinestWebView.Builder(mActivity);
                    builder.addJSInterface(new ApadanaInterface(mContext));
                    builder
                            .toolbarScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS)
                            .gradientDivider(true)
                            .dividerHeight(100)
                            .backPressToClose(false)
                            .setCustomAnimations(R.anim.activity_open_enter, R.anim.activity_open_exit, R.anim.activity_close_enter, R.anim.activity_close_exit);
                    builder.show("https://google.com");