CODEWITHSUNDEEP
androidkotlinandroid-customtabs
Smajl
Smajl

Reputation: 7995

Android custom chrome tab with deep links

I have an Android/Kotlin application and I would like to configure deep links for certain pages to open inside my application (to look native).

At the moment, I have intent filters that redirect the user to an activity with WebView in which I open the desired url:

<activity android:name=".activity.WebViewActivity">
        <intent-filter android:label="Futurity">
            <action android:name="android.intent.action.VIEW" />

            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />

            <data
                android:host="api.example.com"
                android:pathPrefix="/auth/confirm"
                android:scheme="https" />
        </intent-filter>
</activity>

class WebViewActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_web_view)

        val data = intent.data

        // construct url
        val url = if (intent.data != null ) {
            "https://" + data.host + data.path + "?" + data.query
        }

        appWebView.webViewClient = WebViewClient()
        appWebView.loadUrl(url)
    }
}

This works fine, but I would like to use Chrome custom tabs instead for security reasons.

However, when I try to configure the custom tab instead of WebView, I am getting an infinite loop of redirects between the page (launched in the chrome tab) and the intent filter which immediately redirects user back to the activity:

CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
CustomTabsIntent customTabsIntent = builder.build();
customTabsIntent.launchUrl(this, Uri.parse(url));

How can I achieve the same behavior as with webviews but without modifying the url? Is it even doable?

Upvotes: 7

Views: 3926

Answers (1)

blinkmacalahan
blinkmacalahan

Reputation: 520

I did some digging and found out that you should search for packages that support the "warming services". If a package is returned then you can assign the package name to the Intent. Google has a GitHub repo with some helper classes. The one in question is CustomTabHelper#getPackageNameToUse().

So in your case:

CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
CustomTabsIntent customTabsIntent = builder.build();
String packageName = CustomTabsHelper.getPackageNameToUse(getContext());

if (packageName != null) {
    customTabsIntent.intent.setPackage(packageName);
}
customTabsIntent.launchUrl(this, Uri.parse(url));

If a package is not found then you'll want to have some fallback code else the infinite loop will keep happening.

Upvotes: 1

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