private void redirectUsingCustomTab(String url)
{
    Uri uri = Uri.parse(url);

    CustomTabsIntent.Builder intentBuilder = new CustomTabsIntent.Builder();

    // set desired toolbar colors
    intentBuilder.setToolbarColor(ContextCompat.getColor(this, R.color.colorPrimary));
    intentBuilder.setSecondaryToolbarColor(ContextCompat.getColor(this, R.color.colorPrimaryDark));

    // add start and exit animations if you want(optional)
    intentBuilder.setStartAnimations(this, android.R.anim.slide_in_left, android.R.anim.slide_out_right);
    intentBuilder.setExitAnimations(this, android.R.anim.slide_in_left,
        android.R.anim.slide_out_right);

    CustomTabsIntent customTabsIntent = intentBuilder.build();

    customTabsIntent.launchUrl(getActivity(), uri);
}

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support:recyclerview-v7:26.1.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
compile 'com.prolificinteractive:material-calendarview:1.4.3'
compile 'com.android.support:support-v4:26.1.0'