CODEWITHSUNDEEP
androidbrowserwebview
Punit Makwana
Punit Makwana

Reputation: 535

Webview - Open links in external browser?

Can anyone help me in opening specific link in External browser or other android app?

For Example if URL matches whatsapp:// then it should open link in WhatsApp app and if WhatsApp is not installed then it should open https://play.google.com/store/apps/details?id=com.whatsapp in android browser.

FYI: I am using https://github.com/SurfEdge/flarum-mobile-android to create Web View App for my Forum website.

My Android code looks like:

package com.example.example;

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Build;
import android.os.Bundle;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

import im.delight.android.webview.AdvancedWebView;

public class MainActivity extends AppCompatActivity implements AdvancedWebView.Listener{

public AdvancedWebView webView;
private ProgressBar mPbar = null;

private static final String  url = "https://example.com/";


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    mPbar = (ProgressBar) findViewById(R.id.loader);

    webView = (AdvancedWebView) findViewById(R.id.newWeb);
    webView.loadUrl(url);
    webView.setListener(this, this);

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setAppCacheEnabled(true);
    webSettings.setDomStorageEnabled(true);
    webSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
    webSettings.setAllowFileAccess(true);

    CookieManager cookieManager = CookieManager.getInstance();
    cookieManager.setAcceptCookie(true);

    webView.setWebChromeClient(new WebChromeClient() {
        @Override
        public boolean onCreateWindow(WebView view, boolean isDialog, boolean isUserGesture, Message resultMsg) {
            AdvancedWebView newWebView = new AdvancedWebView(MainActivity.this);
            WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
            transport.setWebView(newWebView);
            resultMsg.sendToTarget();
            return true;
        }
    });

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        webView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
        webSettings.setAllowUniversalAccessFromFileURLs(true);
    } else {
        webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    }

    webView.setWebViewClient(new WebViewClient(){
    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
    mPbar.setVisibility(View.VISIBLE);
    }

    public void onPageFinished(WebView view, String url) {
    mPbar.setVisibility(View.GONE);
    }

    @SuppressWarnings("deprecation")
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if (url.startsWith("whatsapp://")) {
            final Uri uri = Uri.parse("market://details?id=com.whatsapp");
            final Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
            @SuppressWarnings({"NewApi", "deprecation"})
            final int newDocumentFlag = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) ? Intent.FLAG_ACTIVITY_NEW_DOCUMENT : Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
            goToMarket.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | newDocumentFlag | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

        try {
            startActivity(goToMarket);
        } catch (ActivityNotFoundException ex) {
            startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=com.whatsapp")));
        }
        return true;
    }

    return super.shouldOverrideUrlLoading(view, url);
    }

    });


    webView.setOnKeyListener( new View.OnKeyListener() {
        @Override
        public boolean onKey( View v, int keyCode, KeyEvent event ) {
            if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
                webView.goBack();
                return true;
            }
            return false;
        }
    });

    webView.setThirdPartyCookiesEnabled(true);
    webView.setCookiesEnabled(true);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}


@Override
protected void onResume() {
    super.onResume();
    webView.onResume();
}

@Override
protected void onPause() {
    webView.onPause();
    super.onPause();
}

@Override
protected void onDestroy() {
    webView.onDestroy();
    super.onDestroy();
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    webView.onActivityResult(requestCode, resultCode, intent);
}

@Override
public void onBackPressed() {
    if (!webView.onBackPressed()) { return; }
    super.onBackPressed();
}


@Override
public void onPageStarted(String url, Bitmap favicon) {

}

@Override
public void onPageFinished(String url) {

}

@Override
public void onPageError(int errorCode, String description, String failingUrl) {

}

@Override
public void onDownloadRequested(String url, String suggestedFilename, String mimeType, long contentLength, String contentDisposition, String userAgent) {

}

@Override
public void onExternalPageRequest(String url) {

}
}

Error:

Error:(86, 11) error: cannot find symbol class Uri
Error:(86, 21) error: cannot find symbol variable Uri
Error:(94, 22) error: cannot find symbol class ActivityNotFoundException
Error:(95, 62) error: cannot find symbol variable Uri

P.S: I am not an Android Developer

Upvotes: 2

Views: 4270

Answers (1)

Nika Kurdadze
Nika Kurdadze

Reputation: 2512

You should override shouldOverrideUrlLoading, determine if the url has the specified prefix, and then open the Whatsapp listing on Play Store, or if the Play Store is not installed, open it inside browser :

webView.setWebViewClient(new WebViewClient(){

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        mPbar.setVisibility(View.VISIBLE);
    }

    public void onPageFinished(WebView view, String url) {
        mPbar.setVisibility(View.GONE);
    }

    @SuppressWarnings("deprecation")
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        if (url.startsWith("whatsapp://")) {
            // create an intent for Play Store
            final Uri uri = Uri.parse("market://details?id=com.whatsapp");
            final Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
            @SuppressWarnings({"NewApi", "deprecation"})
            final int newDocumentFlag = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) ? Intent.FLAG_ACTIVITY_NEW_DOCUMENT : Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET;
            goToMarket.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | newDocumentFlag | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

            try {
                // open Whatsapp listing in Play Store app
                startActivity(goToMarket);
            } catch (ActivityNotFoundException ex) {
                // open Whatsapp listing in browser
                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/details?id=com.whatsapp")));
            }

            return true;
        }

        return super.shouldOverrideUrlLoading(view, url);
    }

});

EDIT

Add this lines to the top of the file to import the necessary classes :

import android.content.ActivityNotFoundException;
import android.net.Uri;

Upvotes: 3

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