App Inventor Pass URL data from AppLink to WebView

[Hrishikesh Kokate]

I am using App Links to allow users to open my app when they tap on my website's URL. I'd like to know, how can I load the URL in a WebView.

For example, if a user taps on a URL: https://www.domain.tld/page1.html, how can I pass that page1.html to a WebView activity? As of now, no matter what URL of my website the user is tapping on, the WebView activity is loading with the default index.html page. For a seamless experience, I'd like the URL that the user tapped on to open.

This is my SplashActivity.java (where I'm receiving the App Link Intent):

package com.application;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;

@SuppressWarnings("unused")

public class SplashActivity extends Activity
{
   Handler Handler;

   [USER=1021285]@override[/USER]
   protected void onCreate(Bundle savedInstanceState)
   {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_splash);

       Handler = new Handler();
       Handler.postDelayed(new Runnable()
                           {
                               [USER=1021285]@override[/USER]
                               public void run()
                               {
                                   Intent intent = new Intent(SplashActivity.this, MainActivity.class);
                                   startActivity(intent);
                                   finish();
                               }
                           },
               1500);

       Intent appLinkIntent = getIntent();

       String appLinkAction = appLinkIntent.getAction();

       Uri appLinkData = appLinkIntent.getData();
   }
}

And this is my MainActivity.java (where I'm loading the WebView):

package com.application;

import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.net.Uri;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebChromeClient;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.Toast;

@SuppressWarnings("deprecation")

public class MainActivity extends AppCompatActivity
{
   private WebView WebView;
   private ProgressBar ProgressBar;
   private LinearLayout LinearLayout;
   private String currentURL;

   @SuppressLint("SetJavaScriptEnabled")

   [USER=1021285]@override[/USER]
   protected void onCreate(Bundle savedInstanceState)
   {

       WebView wv = new WebView(this);
       wv.loadUrl("file:///android_asset/eula.html");
       wv.getSettings().setJavaScriptEnabled(true);
       wv.getSettings().setUserAgentString("customUA");
       wv.setWebViewClient(new WebViewClient()
       {
           [USER=1021285]@override[/USER]
           public boolean shouldOverrideUrlLoading(WebView view, String url3)
           {
               view.loadUrl(url3);

               return true;
           }
       });

       final SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
       boolean agreed = sharedPreferences.getBoolean("agreed",false);

       if(!agreed)
       {
           new AlertDialog.Builder(this, R.style.AlertDialog)
                   .setIcon(R.drawable.ic_remove_circle_black_24dp)
                   .setTitle(R.string.eula_title)
                   .setView(wv)
                   .setCancelable(false)
                   .setPositiveButton(R.string.accept, new DialogInterface.OnClickListener()
                   {
                       [USER=1021285]@override[/USER]
                       public void onClick(DialogInterface dialog, int which)
                       {
                           SharedPreferences.Editor editor = sharedPreferences.edit();
                           editor.putBoolean("agreed", true);
                           editor.apply();
                       }
                   })
                   .setNegativeButton(R.string.decline, new DialogInterface.OnClickListener()
                   {
                       [USER=1021285]@override[/USER]
                       public void onClick(DialogInterface dialog, int which)
                       {
                           finish();
                       }
                   })
                   .show();
       }

       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

       WebView = findViewById(R.id.webView);
       ProgressBar = findViewById(R.id.progressBar);
       LinearLayout = findViewById(R.id.layout);

       ProgressBar.setMax(100);

       WebView.loadUrl("https://www.domain.tld/index.html");
       WebView.getSettings().setJavaScriptEnabled(true);
       WebView.getSettings().setUserAgentString("customUA");
       WebView.setWebViewClient(new WebViewClient()
       {
           [USER=1021285]@override[/USER]
           public void onPageStarted(WebView view, String url, Bitmap favicon)
           {
               LinearLayout.setVisibility(View.VISIBLE);
               super.onPageStarted(view, url, favicon);
           }

           [USER=1021285]@override[/USER]
           public void onPageFinished(WebView view, String url)
           {
               LinearLayout.setVisibility(View.GONE);
               super.onPageFinished(view, url);
               currentURL = url;
           }

           [USER=1021285]@override[/USER]
           public void onReceivedError(WebView webview, int i, String s, String s1)
           {
               WebView.setVisibility(View.GONE);

               Intent intent = new Intent(MainActivity.this, ErrorActivity.class);
               startActivity(intent);
               finish();
           }

           [USER=1021285]@override[/USER]
           public boolean shouldOverrideUrlLoading(WebView view, String url2)
           {
               if (url2.contains("www.domain.tld"))
               {
                   view.loadUrl(url2);
                   return false;
               } else
               {
                   Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url2));
                   startActivity(intent);
                   return true;
               }
           }
       });

       WebView.setWebChromeClient(new WebChromeClient()
       {
           [USER=1021285]@override[/USER]
           public void onProgressChanged(WebView view, int newProgress)
           {
               super.onProgressChanged(view, newProgress);
               ProgressBar.setProgress(newProgress);
           }
       });
   }

   [USER=1021285]@override[/USER]
   public boolean onCreateOptionsMenu(Menu menu)
   {
       super.onPrepareOptionsMenu(menu);
       MenuInflater menuInflater = getMenuInflater();
       menuInflater.inflate(R.menu.menu, menu);
       return super.onCreateOptionsMenu(menu);
   }

   @SuppressLint("SetJavaScriptEnabled")

   [USER=1021285]@override[/USER]
   public boolean onOptionsItemSelected(MenuItem item)
   {
       switch (item.getItemId())
       {
           case R.id.backward:
               onBackPressed();
               break;

           case R.id.forward:
               onForwardPressed();
               break;

           case R.id.refresh:
               WebView.reload();
               break;

           case R.id.share:
               Intent shareIntent = new Intent(Intent.ACTION_SEND);
               shareIntent.setType("text/plain");
               shareIntent.putExtra(Intent.EXTRA_TEXT,currentURL);
               startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.shareWith)));
               break;

           case R.id.update:
               Intent intent = new Intent(MainActivity.this, UpdateActivity.class);
               startActivity(intent);
               finish();
               break;

           case R.id.about:

               WebView wv2 = new WebView(this);
               wv2.loadUrl("file:///android_asset/about.html");
               wv2.getSettings().setJavaScriptEnabled(true);
               wv2.getSettings().setUserAgentString("customUA");
               wv2.setWebViewClient(new WebViewClient()
               {
                   [USER=1021285]@override[/USER]
                   public boolean shouldOverrideUrlLoading(WebView view, String url4)
                   {
                       view.loadUrl(url4);

                       return true;
                   }
               });

               new AlertDialog.Builder(this, R.style.AlertDialog)
                       .setIcon(R.drawable.ic_info_black_24dp)
                       .setTitle(R.string.info)
                       .setView(wv2)
                       .setPositiveButton(R.string.okay, null)
                       .show();
               break;

           case R.id.exit:
               new AlertDialog.Builder(this,R.style.AlertDialog)
                       .setIcon(R.drawable.ic_error_black_24dp)
                       .setTitle(R.string.title)
                       .setMessage(R.string.message)
                       .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener()
                               {
                                   [USER=1021285]@override[/USER]
                                   public void onClick(DialogInterface dialog, int which)
                                   {
                                       finish();
                                   }
                               })
                       .setNegativeButton(R.string.no, null)
                       .show();
               break;
       }
       return super.onOptionsItemSelected(item);
   }

   private void onForwardPressed()
   {
       if (WebView.canGoForward())
       {
           WebView.goForward();
       } else
       {
           Toast.makeText(this, R.string.noFurther, Toast.LENGTH_SHORT).show();
       }
   }

   [USER=1021285]@override[/USER]
   public void onBackPressed ()
   {
       if (WebView.canGoBack())
       {
           WebView.goBack();
       } else
       {
           new AlertDialog.Builder(this,R.style.AlertDialog)
                   .setIcon(R.drawable.ic_error_black_24dp)
                   .setTitle(R.string.title)
                   .setMessage(R.string.message)
                   .setPositiveButton(R.string.yes,
                           new DialogInterface.OnClickListener()
                           {
                               [USER=1021285]@override[/USER]
                               public void onClick(DialogInterface dialog, int which)
                               {
                                   finish();
                               }
                           })
                   .setNegativeButton(R.string.no, null)
                   .show();
       }
   }
}

Please, do not point me to Android docs example. I have read that many times, but, didn't understand how to modify it to match my case. I'm a noob in this and most of the code that I've written is from Google searches.

 

[Unforgiven]

I added code tags to make it easier to read.