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Seamless linking to your app @cyrilmottier

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

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Gotta Catch ‘Em All

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Available since Android 1.0 Declared statically General intent filtering mechanism

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Available since Android 1.0 Declared statically General intent filtering mechanism

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Available since Android 1.0 Declared statically General intent filtering mechanism

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

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

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

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

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Are you f***ing serious? The real world is that simple?

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Nope…

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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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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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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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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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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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App Links Associate your app with your domain 2 2

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

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

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

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android:autoVerify="true"

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

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

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

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

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

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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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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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Digital Asset Links JSON Declaring website & app association

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[ { "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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[ { "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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[ { "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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[ { "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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[ { "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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[ { "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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keytool -list -v -keystore release-key.keystore

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

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Related Apps Banner Promote your app from your website 3

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

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

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

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

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Your website must be served as HTTPS

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{
 "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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{
 "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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{
 "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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{
 "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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{
 "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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w3c.github.io/manifest/ Full specifications

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Why is nothing happening? aka “WTF moment”…

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

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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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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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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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Smart Lock for Passwords Retrieve credentials from the web 2 4

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

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

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

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Miscellaneous Go even further 5

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App Indexing Google crawler for native apps

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Firebase Dynamic Links Post install deferred links

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Firebase Dynamic Links Post install deferred links

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App Preview Messaging Pushing messages & your messaging app

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App Preview Messaging Pushing messages & your messaging app

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App Preview Messaging Pushing messages & your messaging app

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

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

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

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Thank you @cyrilmottier