Seamless Linking to Your App

An Android app is usually only a single part of a larger product. Indeed, a product is usually made of several independent entities such as a website, one or several mobile apps, etc.

In this talk, we will learn how to increase app engagement and tear down the walls between your website and your apps. You will also discover how you can give your users the most integrated mobile experience possible with features such as Related Apps Banner, Smart Lock for Passwords and more… In a nutshell, this talk is all about driving users to your mobile app and making your product successful.

Transcript

1. Seamless
   linking to your app
   @cyrilmottier
   

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2. Linking to your App
   Tell your app to handle some links
   1
   

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3. 
   

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4. 
   Gotta Catch ‘Em All
   

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5. Available since Android 1.0
   Declared statically
   General intent filtering mechanism
   

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6. Available since Android 1.0
   Declared statically
   General intent filtering mechanism
   

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7. Available since Android 1.0
   Declared statically
   General intent filtering mechanism
   

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8. https://www.trainline.eu/search/nantes/paris
   

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9. https://www.trainline.eu/search/nantes/paris
   Scheme
   

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10. https://www.trainline.eu/search/nantes/paris
    Host
    

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11. https://www.trainline.eu/search/nantes/paris
    Path
    

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12. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    

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13. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    
    

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14. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    
    
    

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15. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    

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16. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    
    
    

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17. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    Are you f***ing serious?
    The real world is that simple?
    

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18. 
    
    
    
    android:scheme="https"
    android:host="www.trainline.eu" />
    
    
    
    Nope…
    

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19. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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20. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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21. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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22. public final class AppConfig {
    private AppConfig() {
    }
    public static final List SCHEMES = Collections.unmodifiableList(Arrays.asList(
    "http",
    "https"));
    public static final List AUTHORITIES = Collections.unmodifiableList(Arrays.asList(
    "captaintrain.com",
    "trainline.de",
    "trainline.es",
    "trainline.eu",
    "trainline.fr",
    "trainline.it",
    "www.captaintrain.com",
    "www.trainline.de",
    "www.trainline.es",
    "www.trainline.eu",
    "www.trainline.fr",
    "www.trainline.it"));
    public static final String PATH_SEARCH = "search";
    }
    

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23. public final class SearchActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    String departure = null;
    String arrival = null;
    final Uri uri = getIntent().getData();
    if (uri != null) {
    if (AppConfig.AUTHORITIES.contains(uri.getAuthority()) &&
    AppConfig.SCHEMES.contains(uri.getScheme())) {
    final List segments = uri.getPathSegments();
    if (segments != null &&
    segments.size() == 3 &&
    AppConfig.PATH_SEARCH.equals(segments.get(0))) {
    arrival = segments.get(1);
    departure = segments.get(2);
    }
    }
    }
    startSearch(departure, arrival);
    }
    }
    

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24. public final class SearchActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    String departure = null;
    String arrival = null;
    final Uri uri = getIntent().getData();
    if (uri != null) {
    if (AppConfig.AUTHORITIES.contains(uri.getAuthority()) &&
    AppConfig.SCHEMES.contains(uri.getScheme())) {
    final List segments = uri.getPathSegments();
    if (segments != null &&
    segments.size() == 3 &&
    AppConfig.PATH_SEARCH.equals(segments.get(0))) {
    arrival = segments.get(1);
    departure = segments.get(2);
    }
    }
    }
    startSearch(departure, arrival);
    }
    }
    if (AppConfig.AUTHORITIES.contains(uri.getAuthority()) &&
    AppConfig.SCHEMES.contains(uri.getScheme())) {
    

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25. public final class SearchActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    String departure = null;
    String arrival = null;
    final Uri uri = getIntent().getData();
    if (uri != null) {
    if (AppConfig.AUTHORITIES.contains(uri.getAuthority()) &&
    AppConfig.SCHEMES.contains(uri.getScheme())) {
    final List segments = uri.getPathSegments();
    if (segments != null &&
    segments.size() == 3 &&
    AppConfig.PATH_SEARCH.equals(segments.get(0))) {
    arrival = segments.get(1);
    departure = segments.get(2);
    }
    }
    }
    startSearch(departure, arrival);
    }
    }
    final List segments = uri.getPathSegments();
    if (segments != null &&
    segments.size() == 3 &&
    AppConfig.PATH_SEARCH.equals(segments.get(0))) {
    arrival = segments.get(1);
    departure = segments.get(2);
    }
    

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26. public final class SearchActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    String departure = null;
    String arrival = null;
    final Uri uri = getIntent().getData();
    if (uri != null) {
    if (AppConfig.AUTHORITIES.contains(uri.getAuthority()) &&
    AppConfig.SCHEMES.contains(uri.getScheme())) {
    final List segments = uri.getPathSegments();
    if (segments != null &&
    segments.size() == 3 &&
    AppConfig.PATH_SEARCH.equals(segments.get(0))) {
    arrival = segments.get(1);
    departure = segments.get(2);
    }
    }
    }
    startSearch(departure, arrival);
    }
    }
    startSearch(departure, arrival);
    

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30. App Links
    Associate your app with your domain
    2
    2
    

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37. Available on Marshmallow+ (API 23)
    Consider app & website as a single entity
    Prevent “Open with” dialog
    

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38. Available on Marshmallow+ (API 23)
    Consider app & website as a single entity
    Prevent “Open with” dialog
    

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39. Available on Marshmallow+ (API 23)
    Consider app & website as a single entity
    Prevent “Open with” dialog
    

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40. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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41. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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42. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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43. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    

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44. 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    android:autoVerify="true"
    

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45. android:autoVerify="true"
    Link verification is done at app install time
    Verified only if all hosts are verified
    

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46. https:///.well-known/assetlinks.json
    

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47. https:///.well-known/assetlinks.json
    Android always uses
    HTTPS to retrieve statements
    

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48. https:///.well-known/assetlinks.json
    The host to verify
    links against
    

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49. https:///.well-known/assetlinks.json
    A fixed “well-known” location
    as defined in Digital Assets Links specs
    

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50. https:///.well-known/assetlinks.json
    Must be served as Content-Type: application/json
    Responses other than HTTP 200 are treated as errors
    

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51. https://captaintrain.com/.well-known/assetlinks.json
    https://trainline.de/.well-known/assetlinks.json
    https://trainline.es/.well-known/assetlinks.json
    https://trainline.eu/.well-known/assetlinks.json
    https://trainline.fr/.well-known/assetlinks.json
    https://trainline.it/.well-known/assetlinks.json
    https://www.captaintrain.com/.well-known/assetlinks.json
    https://www.trainline.de/.well-known/assetlinks.json
    https://www.trainline.es/.well-known/assetlinks.json
    https://www.trainline.eu/.well-known/assetlinks.json
    https://www.trainline.fr/.well-known/assetlinks.json
    https://www.trainline.it/.well-known/assetlinks.json
    

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52. Digital Asset Links JSON
    Declaring website & app association
    

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53. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    

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54. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    

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55. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    "namespace": "android_app",
    

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56. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    "package_name": "com.capitainetrain.android",
    

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57. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    

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58. [
    {
    "relation": [
    "delegate_permission/common.handle_all_urls"
    ],
    "target": {
    "namespace": "android_app",
    "package_name": "com.capitainetrain.android",
    "sha256_cert_fingerprints": [
    “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
    50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
    ]
    }
    }
    ]
    

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59. keytool -list -v -keystore release-key.keystore
    

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60. https://digitalassetlinks.googleapis.com/v1/statements:list?
    source.web.site=https://&
    relation=delegate_permission/common.handle_all_urls
    

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66. Related Apps Banner
    Promote your app from your website
    3
    

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69. Available on Chrome 44+
    Knows whether an app is installed
    Easy to add to your website
    Displayed when appropriate
    

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70. Available on Chrome 44+
    Knows whether an app is installed
    Easy to add to your website
    Displayed when appropriate
    

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71. Available on Chrome 44+
    Knows whether an app is installed
    Easy to add to your website
    Displayed when appropriate
    

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72. Available on Chrome 44+
    Knows whether an app is installed
    Easy to add to your website
    Displayed when appropriate
    

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73. Your website must be served as
    HTTPS
    

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74. 
    
    
    
    
    

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75. 
    
    
    
    
    
    

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76. {

    "display": "browser",

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],

    "name": "Trainline EU",

    "prefer_related_applications": true,

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],

    "short_name": "Trainline EU"

    }

    

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77. {

    "display": "browser",

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],

    "name": "Trainline EU",

    "prefer_related_applications": true,

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],

    "short_name": "Trainline EU"

    }

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],
    

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78. {

    "display": "browser",

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],

    "name": "Trainline EU",

    "prefer_related_applications": true,

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],

    "short_name": "Trainline EU"

    }

    "short_name": "Trainline EU"
    

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79. {

    "display": "browser",

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],

    "name": "Trainline EU",

    "prefer_related_applications": true,

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],

    "short_name": "Trainline EU"

    }

    "prefer_related_applications": true,
    

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80. {

    "display": "browser",

    "icons": [

    {

    "src": "../favicons/android-icon-3x.png",

    "sizes": "144x144",

    "type": "image/png"

    }

    ],

    "name": "Trainline EU",

    "prefer_related_applications": true,

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],

    "short_name": "Trainline EU"

    }

    "related_applications": [

    {

    "platform": "play",

    "id": "com.capitainetrain.android"

    }

    ],
    

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81. w3c.github.io/manifest/
    Full specifications
    

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82. Why is nothing happening?
    aka “WTF moment”…
    

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83. The user has visited your site twice over
    two separate days during the course of two weeks
    

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84. The user has visited your site twice over
    two separate days during the course of two weeks
    There is a dev option for that…
    

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85. The user has visited your site twice over
    two separate days during the course of two weeks
    There is a dev option for everything…
    

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86. The user has visited your site twice over
    two separate days during the course of two weeks
    There is a dev option
    chrome://flags/#bypass-app-banner-engagement-checks
    for everything…
    

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91. Smart Lock for Passwords
    Retrieve credentials from the web
    2
    4
    

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92. mCredentialsClient = new GoogleApiClient.Builder(this).
    addApi(Auth.CREDENTIALS_API).
    addConnectionCallbacks(mConnectionCallbacks).
    addOnConnectionFailedListener(mOnConnectionFailedListener).
    build();
    

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93. private final GoogleApiClient.ConnectionCallbacks mConnectionCallbacks =
    new GoogleApiClient.ConnectionCallbacks() {
    @Override
    public void onConnected(Bundle connectionHint) {
    final CredentialRequest request = new CredentialRequest.Builder().
    setPasswordLoginSupported(true).
    build();
    Auth.CredentialsApi.request(mCredentialsClient, request).
    setResultCallback(mRequestCallback);
    }
    @Override
    public void onConnectionSuspended(int cause) {
    // ...
    }
    };
    private ResultCallback mRequestCallback =
    new ResultCallback() {
    @Override
    public void onResult(CredentialRequestResult result) {
    if (result.getStatus().isSuccess()) {
    onCredentialRetrieved(result.getCredential());
    } else {
    resolveResult(result.getStatus());
    }
    }
    };
    

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94. private final GoogleApiClient.ConnectionCallbacks mConnectionCallbacks =
    new GoogleApiClient.ConnectionCallbacks() {
    @Override
    public void onConnected(Bundle connectionHint) {
    final CredentialRequest request = new CredentialRequest.Builder().
    setPasswordLoginSupported(true).
    build();
    Auth.CredentialsApi.request(mCredentialsClient, request).
    setResultCallback(mRequestCallback);
    }
    @Override
    public void onConnectionSuspended(int cause) {
    // ...
    }
    };
    private ResultCallback mRequestCallback =
    new ResultCallback() {
    @Override
    public void onResult(CredentialRequestResult result) {
    if (result.getStatus().isSuccess()) {
    onCredentialRetrieved(result.getCredential());
    } else {
    resolveResult(result.getStatus());
    }
    }
    };
    public void onConnected(Bundle connectionHint) {
    final CredentialRequest request = new CredentialRequest.Builder().
    setPasswordLoginSupported(true).
    build();
    Auth.CredentialsApi.request(mCredentialsClient, request).
    setResultCallback(mRequestCallback);
    }
    

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95. private final GoogleApiClient.ConnectionCallbacks mConnectionCallbacks =
    new GoogleApiClient.ConnectionCallbacks() {
    @Override
    public void onConnected(Bundle connectionHint) {
    final CredentialRequest request = new CredentialRequest.Builder().
    setPasswordLoginSupported(true).
    build();
    Auth.CredentialsApi.request(mCredentialsClient, request).
    setResultCallback(mRequestCallback);
    }
    @Override
    public void onConnectionSuspended(int cause) {
    // ...
    }
    };
    private ResultCallback mRequestCallback =
    new ResultCallback() {
    @Override
    public void onResult(CredentialRequestResult result) {
    if (result.getStatus().isSuccess()) {
    onCredentialRetrieved(result.getCredential());
    } else {
    resolveResult(result.getStatus());
    }
    }
    };
    if (result.getStatus().isSuccess()) {
    onCredentialRetrieved(result.getCredential());
    } else {
    resolveResult(result.getStatus());
    }
    

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96. private void onCredentialRetrieved(Credential credential) {
    Auth.CredentialsApi.disableAutoSignIn(mCredentialsClient);
    signIn(credential.getId(), credential.getPassword());
    }
    private void resolveResult(Status status) {
    if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {
    try {
    status.startResolutionForResult(SmartLockActivity.this, RC_SLP_READ);
    } catch (IntentSender.SendIntentException e) {
    // Fail silently
    }
    }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case RC_SLP_READ:
    if (resultCode == RESULT_OK) {
    onCredentialRetrieved(data.getParcelableExtra(Credential.EXTRA_KEY));
    }
    break;
    }
    }
    

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97. private void onCredentialRetrieved(Credential credential) {
    Auth.CredentialsApi.disableAutoSignIn(mCredentialsClient);
    signIn(credential.getId(), credential.getPassword());
    }
    private void resolveResult(Status status) {
    if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {
    try {
    status.startResolutionForResult(SmartLockActivity.this, RC_SLP_READ);
    } catch (IntentSender.SendIntentException e) {
    // Fail silently
    }
    }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case RC_SLP_READ:
    if (resultCode == RESULT_OK) {
    onCredentialRetrieved(data.getParcelableExtra(Credential.EXTRA_KEY));
    }
    break;
    }
    }
    private void onCredentialRetrieved(Credential credential) {
    Auth.CredentialsApi.disableAutoSignIn(mCredentialsClient);
    signIn(credential.getId(), credential.getPassword());
    }
    

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98. private void onCredentialRetrieved(Credential credential) {
    Auth.CredentialsApi.disableAutoSignIn(mCredentialsClient);
    signIn(credential.getId(), credential.getPassword());
    }
    private void resolveResult(Status status) {
    if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {
    try {
    status.startResolutionForResult(SmartLockActivity.this, RC_SLP_READ);
    } catch (IntentSender.SendIntentException e) {
    // Fail silently
    }
    }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case RC_SLP_READ:
    if (resultCode == RESULT_OK) {
    onCredentialRetrieved(data.getParcelableExtra(Credential.EXTRA_KEY));
    }
    break;
    }
    }
    private void resolveResult(Status status) {
    if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {
    try {
    status.startResolutionForResult(SmartLockActivity.this, RC_SLP_READ);
    } catch (IntentSender.SendIntentException e) {
    // Fail silently
    }
    }
    }
    

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99. private void onCredentialRetrieved(Credential credential) {
    Auth.CredentialsApi.disableAutoSignIn(mCredentialsClient);
    signIn(credential.getId(), credential.getPassword());
    }
    private void resolveResult(Status status) {
    if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {
    try {
    status.startResolutionForResult(SmartLockActivity.this, RC_SLP_READ);
    } catch (IntentSender.SendIntentException e) {
    // Fail silently
    }
    }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case RC_SLP_READ:
    if (resultCode == RESULT_OK) {
    onCredentialRetrieved(data.getParcelableExtra(Credential.EXTRA_KEY));
    }
    break;
    }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
    case RC_SLP_READ:
    if (resultCode == RESULT_OK) {
    onCredentialRetrieved(data.getParcelableExtra(Credential.EXTRA_KEY));
    }
    break;
    }
    }
    

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100. View Slide

101. private void saveCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.save(mCredentialsClient, credential).
     setResultCallback(mSavedCallback);
     }
     private final ResultCallback mSavedCallback =
     new ResultCallback() {
     @Override
     public void onResult(final Status status) {
     final Activity ziss = SmartLockActivity.this;
     if (status.isSuccess()) {
     Toast.makeText(ziss,
     "Your login credentials have been saved",
     Toast.LENGTH_LONG).show();
     } else {
     if (status.hasResolution()) {
     try {
     status.startResolutionForResult(ziss, RC_SLP_WRITE);
     } catch (IntentSender.SendIntentException e) {
     // Fail silently
     }
     }
     }
     }
     };
     

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102. private void saveCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.save(mCredentialsClient, credential).
     setResultCallback(mSavedCallback);
     }
     private final ResultCallback mSavedCallback =
     new ResultCallback() {
     @Override
     public void onResult(final Status status) {
     final Activity ziss = SmartLockActivity.this;
     if (status.isSuccess()) {
     Toast.makeText(ziss,
     "Your login credentials have been saved",
     Toast.LENGTH_LONG).show();
     } else {
     if (status.hasResolution()) {
     try {
     status.startResolutionForResult(ziss, RC_SLP_WRITE);
     } catch (IntentSender.SendIntentException e) {
     // Fail silently
     }
     }
     }
     }
     };
     private void saveCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.save(mCredentialsClient, credential).
     setResultCallback(mSavedCallback);
     }
     

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103. private void saveCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.save(mCredentialsClient, credential).
     setResultCallback(mSavedCallback);
     }
     private final ResultCallback mSavedCallback =
     new ResultCallback() {
     @Override
     public void onResult(final Status status) {
     final Activity ziss = SmartLockActivity.this;
     if (status.isSuccess()) {
     Toast.makeText(ziss,
     "Your login credentials have been saved",
     Toast.LENGTH_LONG).show();
     } else {
     if (status.hasResolution()) {
     try {
     status.startResolutionForResult(ziss, RC_SLP_WRITE);
     } catch (IntentSender.SendIntentException e) {
     // Fail silently
     }
     }
     }
     }
     };
     if (status.isSuccess()) {
     Toast.makeText(ziss,
     "Your login credentials have been saved",
     Toast.LENGTH_LONG).show();
     }
     

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104. private void saveCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.save(mCredentialsClient, credential).
     setResultCallback(mSavedCallback);
     }
     private final ResultCallback mSavedCallback =
     new ResultCallback() {
     @Override
     public void onResult(final Status status) {
     final Activity ziss = SmartLockActivity.this;
     if (status.isSuccess()) {
     Toast.makeText(ziss,
     "Your login credentials have been saved",
     Toast.LENGTH_LONG).show();
     } else {
     if (status.hasResolution()) {
     try {
     status.startResolutionForResult(ziss, RC_SLP_WRITE);
     } catch (IntentSender.SendIntentException e) {
     // Fail silently
     }
     }
     }
     }
     };
     if (status.hasResolution()) {
     try {
     status.startResolutionForResult(ziss, RC_SLP_WRITE);
     } catch (IntentSender.SendIntentException e) {
     // Fail silently
     }
     }
     

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105. View Slide

106. private void deleteCredential(String email, String password) {
     final Credential credential = new Credential.Builder(email).
     setPassword(password).
     build();
     Auth.CredentialsApi.delete(mCredentialsClient, credential);
     }
     

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107. It would be so magical to get credentials already saved on
     my website. Doing so would streamline the sign-in experience.
     

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108. It would be so magical to get credentials already saved on
     my website. Doing so would streamline the sign-in experience.
     Digital Assets Links to the rescue \o/
     

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109. [
     {
     "relation": [
     "delegate_permission/common.handle_all_urls"
     ],
     "target": {
     "namespace": "android_app",
     "package_name": "com.capitainetrain.android",
     "sha256_cert_fingerprints": [
     “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
     50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
     ]
     }
     }
     ]
     

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110. [
     {
     "relation": [
     "delegate_permission/common.handle_all_urls"
     ],
     "target": {
     "namespace": "android_app",
     "package_name": "com.capitainetrain.android",
     "sha256_cert_fingerprints": [
     “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
     50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
     ]
     }
     }
     ]
     " ",
     "delegate_permission/common.get_login_creds"
     ],
     "target": {
     "namespace": "android_app",
     "package_name": "com.capitainetrain.android",
     "sha256_cert_fingerprints": [
     “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
     50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
     ]
     }
     }
     ]
     

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111. [
     {
     "relation": [
     "delegate_permission/common.handle_all_urls"
     ],
     "target": {
     "namespace": "android_app",
     "package_name": "com.capitainetrain.android",
     "sha256_cert_fingerprints": [
     “5A:BF:2C:43:1A:2E:54:A3:60:31:58:A7:62:AA:4D:E0:AA:BE:
     50:F7:00:36:3C:CB:41:CD:83:FE:F5:B9:58:2C”
     ]
     }
     }
     ]
     ,
     “delegate_permission/common.get_login_creds"
     "delegate_permission/common.get_login_creds"
     

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112. View Slide

113. It would be so magical to get credentials already saved on
     my website. Doing so would streamline the sign-in experience.
     

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114. Android app
     It would be so magical to get credentials already saved on
     my . Doing so would streamline the sign-in experience.
     

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115. Android app
     It would be so magical to get credentials already saved on
     my . Doing so would streamline the sign-in experience.
     Digital Assets Links to the rescue \o/ … again
     

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116. 
     android:name="asset_statements"
     android:resource="@string/smartlock_asset_statements" />
     
     

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117. 
     
     
     [{
     \"include\": \"https://www.trainline.eu/.well-known/assetlinks.json\"
     }]
     
     
     

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118. [
     {
     "relation": [
     "delegate_permission/common.get_login_creds"
     ],
     "target": {
     "namespace": "web",
     "site": "https://www.trainline.eu"
     }
     }
     ]
     

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119. View Slide

120. View Slide

121. View Slide

122. Miscellaneous
     Go even further
     5
     

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123. App Indexing
     Google crawler for native apps
     

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124. Firebase Dynamic Links
     Post install deferred links
     

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125. Firebase Dynamic Links
     Post install deferred links
     

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126. App Preview Messaging
     Pushing messages & your messaging app
     

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127. App Preview Messaging
     Pushing messages & your messaging app
     

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128. App Preview Messaging
     Pushing messages & your messaging app
     

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129. Android Instant Apps
     Blow up the walls between web & native apps
     

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130. Links are not web-only
     Links act as a glue between your different
     product apps.
     

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131. Don’t be afraid or lazy
     Tear down the walls between your web site
     and your native mobile apps.
     

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132. Thank you
     @cyrilmottier
     

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