Chrome custom tab opens as a new tab in chrome not inside the app why?

Question

How can I open my custom tab inside my app without opening Google Chrome in background...

this is my code

String a="http://www.gpamravati.ac.in/gpamravati";
        CustomTabsIntent.Builder builder=new CustomTabsIntent.Builder();
        CustomTabsIntent custom=builder.build();
        custom.intent.setPackage("com.android.chrome");
        builder.setToolbarColor(ContextCompat.getColor(this, R.color.colorPrimary));
        custom.launchUrl(this, Uri.parse(a));

Answer 1

Finally solved my problem by adding:

android:launchMode="singleTask"

Just add this code to your manifest under activity

Below is the output

Answer 2

in short, you should open a fragment OnNavigationItemSelectedListener and use the webview inside the opened fragment and open the Url.

xml for fragment

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/container"
     android:layout_width="match_parent"
     android:layout_height="match_parent">

         <WebView
         android:id="@+id/main_webview"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
</FrameLayout>

java code for fragment

    public class UrlFragment extends Fragment  {

    private WebView mWebView;

    //inflate the layout

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_url, container, false);
    return v;
   }

    @Override
    protected void onViewCreated(View view, Bundle savedInstanceState) {

        mWebView = (WebView) view(R.id.main_webview);
        // Enable Javascript
        WebSettings webSettings = mWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        mWebView.loadUrl("http://www.gpamravati.ac.in/");
        mWebView.setWebViewClient(new WebViewClient());
    }
}

and that the basic code needed to open a URL in webview inside the fragment. Read morehere