Slinger - deep linking library for Android
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Latest commit 7cf3a66 May 16, 2016

Slinger - deep linking library for Android

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Slinger is a small Android library for handling custom Uri which uses regular expression to catch and route URLs which won’t be handled by normal intent-filter mechanism.

With slinger it’s possible to provide deep links for quite complicated URLs.

Scheme of Slinger resolving Activities using regular expression

How do I use it?

Declare Activity in your manifest with your own IntentResolver that will handle links within particular domain.

    <intent-filter android:label="@string/app_name">
      <action android:name="android.intent.action.VIEW"/>
      <category android:name="android.intent.category.DEFAULT"/>
      <category android:name="android.intent.category.BROWSABLE"/>

IntentResolver is a class that redirects URLs to concrete Activities based on regular expressions.

public class ExampleIntentResolver extends IntentResolver {

  private List<RedirectRule> rules;

  public ExampleIntentResolver(Activity activity) {
    rules = asList(getRedirectRuleForAboutActivity(activity));

  private RedirectRule getRedirectRuleForAboutActivity(Activity activity) {
    return RedirectRule.builder()
                       .intent(new Intent(activity, MyConcreteActivityA.class))

  @NonNull @Override public Iterable<RedirectRule> getRules() {
    return rules;

In case when no redirect rule is matched IntentResolver will fallback to default Intent - Uri with ACTION_VIEW.


Matching Activities

In order to provide other mechanism than regular expression matching you can override resolveIntentToSling in IntentResolver

Enriching Slinged Intents with Referrer and input URL

Slinger enriches Intents with URL and referrer by default. This can be changed by overriding enrichIntent in IntentResolver

public class ExampleIntentResolver extends IntentResolver {

  public Intent resolveIntentToSling(@NonNull Uri originatingUri) {
    // implement own intent resolving strategy here
    return super.resolveIntentToSling(originatingUri);
  public Intent enrichIntent(Activity parentActivity, Intent resolvedIntent, Uri originatingUri) {
    // enrich resolved intent with custom data
    return super.enrichIntent(parentActivity, resolvedIntent, originatingUri).putExtra("foo","bar");

Security considerations

Slinger does not sanitize input in any way. So providing security for application is your responsibility.


slinger is published under Apache License 2.0.