{"id":537,"date":"2022-10-21T11:52:59","date_gmt":"2022-09-29T03:12:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/%e3%82%a2%e3%83%b3%e3%83%89%e3%83%ad%e3%82%a4%e3%83%89%e3%81%aegoogle%e3%82%b9%e3%83%9e%e3%83%bc%e3%83%88%e3%83%ad%e3%83%83%e3%82%af\/"},"modified":"2025-08-01T00:24:14","modified_gmt":"2025-07-31T15:24:14","slug":"%e3%82%a2%e3%83%b3%e3%83%89%e3%83%ad%e3%82%a4%e3%83%89%e3%81%aegoogle%e3%82%b9%e3%83%9e%e3%83%bc%e3%83%88%e3%83%ad%e3%83%83%e3%82%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%82%a2%e3%83%b3%e3%83%89%e3%83%ad%e3%82%a4%e3%83%89%e3%81%aegoogle%e3%82%b9%e3%83%9e%e3%83%bc%e3%83%88%e3%83%ad%e3%83%83%e3%82%af\/","title":{"rendered":"\u30a2\u30f3\u30c9\u30ed\u30a4\u30c9\u306eGoogle\u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af"},"content":{"rendered":"<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Smart Lock\u6a5f\u80fd\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001Android\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n<h2>Google \u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af<\/h2>\n<p>\u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af\u306f\u3001\u8a8d\u8a3c\u60c5\u5831\u3092\u4e00\u5ea6\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u81ea\u52d5\u7684\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u3057\u3070\u3089\u304f\u3057\u3066\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u4ee5\u524d\u306b\u4fdd\u5b58\u3055\u308c\u305f\u8a8d\u8a3c\u60c5\u5831\u3092Chrome\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u304b\u3089\u524a\u9664\u3057\u306a\u304b\u3063\u305f\u9650\u308a\u3001\u81ea\u52d5\u7684\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Google \u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af\u306f\u3001\u305f\u3063\u305f\u4e00\u3064\u306e\u30bf\u30c3\u30d7\u3067\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Smart Lock\u3092\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u7d71\u5408\u3059\u308b\u305f\u3081\u306b\u306f\u3001Credentials API\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Credentials API\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4ee5\u4e0b\u306e\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li>Request credentials when opening the app.<\/li>\n<li>Save credentials from the login form.<\/li>\n<li>Sync credentials between the app and website.<\/li>\n<li>Display email hints in case we want to help the user in the sign-in\/sign-up process.<\/li>\n<\/ul>\n<p>\u3042\u306a\u305f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067Google Smart Lock\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>dependencies {\r\n    implementation 'com.google.android.gms:play-services-auth:16.0.0'\r\n}\r\n<\/code><\/pre>\n<p>SmartLock\u306f\u3001Android\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066GoogleApiClient\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002SmartLock\u306f\u30011\u3064\u306e\u8cc7\u683c\u60c5\u5831\u306e\u5834\u5408\u306b\u81ea\u52d5\u3067\u30b5\u30a4\u30f3\u30a4\u30f3\u3092\u8a31\u53ef\u3057\u307e\u3059\u3002\u8907\u6570\u306e\u8cc7\u683c\u60c5\u5831\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u3001\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u524d\u306fSharedPreferences\u306b\u4f9d\u5b58\u3057\u3066\u3001\u81ea\u52d5\u7684\u306b\u7f72\u540d\u3092\u884c\u3044\u3001\u30ed\u30fc\u30ab\u30eb\u306b\u8cc7\u683c\u60c5\u5831\u3092\u4fdd\u5b58\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001Google Smart Lock\u3067\u306f\u5168\u3066Google\u30b5\u30fc\u30d0\u30fc\u304c\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306fCredentials API\u306b\u5b58\u5728\u3059\u308b\u4e3b\u306a\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li>save(GoogleApiClient client, Credential credential)<\/li>\n<li>request(GoogleApiClient client, CredentialRequestrequest)\u200a- Requests all the credentials saved for the app.<\/li>\n<li>getHintPickerIntent(GoogleApiClient client, HintRequest request)\u200a- Shows a list of signed-in accounts you have in order to quickly fill up login forms.<\/li>\n<li>disableAutoSignIn(GoogleApiClient client)<\/li>\n<li>delete(GoogleApiClient client, Credential credential)<\/li>\n<\/ul>\n<p>Google\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u4fdd\u5b58\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\u306b\u306f\u3001passwords.google.com\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Smart Lock\u3092\u4f7f\u7528\u3057\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d5\u30ed\u30fc\u306f\u3069\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u304b\uff1f\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u306e\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u69cb\u7bc9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li>Check for Credentials. If a single credential exists, auto-sign or auto-fill the login form.<\/li>\n<li>If there are more than one credentials, show them in a dialog and let the user choose.<\/li>\n<li>If there are no saved credentials you can either let the user fill up the form OR make it easier for them by AutoFill or showing a Hint dialog with available accounts to sign in with.<\/li>\n<\/ul>\n<h3>\u59cb\u3081\u308b<\/h3>\n<p>Android\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3001\u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af\u6a5f\u80fd\u306e\u5b9f\u88c5\u3092\u59cb\u3081\u307e\u3057\u3087\u3046\u3002GoogleApiClient\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>mGoogleApiClient = new GoogleApiClient.Builder(this)\r\n                .addConnectionCallbacks(this)\r\n                .addApi(Auth.CREDENTIALS_API)\r\n                .enableAutoManage(this, this)\r\n                .build();\r\n<\/code><\/pre>\n<p>GoogleApiClient\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002Credentials Client\u3092\u521d\u671f\u5316\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>CredentialsOptions options = new CredentialsOptions.Builder()\r\n                .forceEnableSaveDialog()\r\n                .build();\r\n\r\n\r\nCredentialsClient  mCredentialsApiClient = Credentials.getClient(this, options);\r\n<\/code><\/pre>\n<p>Android Oreo\u4ee5\u964d\u3067\u306f\u3001forceEnableSaveDialog()\u304c\u5fc5\u8981\u3067\u3059\u3002CredentialRequest\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>CredentialRequest mCredentialRequest = new CredentialRequest.Builder()\r\n                .setPasswordLoginSupported(true)\r\n                .setAccountTypes(IdentityProviders.GOOGLE)\r\n                .build();\r\n<\/code><\/pre>\n<p>\u8cc7\u683c\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b<\/p>\n<pre class=\"post-pre\"><code>Auth.CredentialsApi.request(mGoogleApiClient, mCredentialRequest).setResultCallback(this);\r\n<\/code><\/pre>\n<p>setResultCallBack\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9ResultCallback\u306e\u30e1\u30bd\u30c3\u30c9onResult\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>@Override\r\n    public void onResult(@NonNull CredentialRequestResult credentialRequestResult) {\r\n\r\n        Status status = credentialRequestResult.getStatus();\r\n        if (status.isSuccess()) {\r\n            onCredentialRetrieved(credentialRequestResult.getCredential());\r\n        } else {\r\n            if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {\r\n                try {\r\n                    isResolving = true;\r\n                    status.startResolutionForResult(this, RC_READ);\r\n                } catch (IntentSender.SendIntentException e) {\r\n                    Log.d(TAG, e.toString());\r\n                }\r\n            } else {\r\n\r\n                showHintDialog();\r\n            }\r\n        }\r\n    }\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306b\u30013\u3064\u306e\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5358\u4e00\u306e\u8a8d\u8a3c &#8211; \u6210\u529f &#8211; \u8907\u6570\u306e\u8a8d\u8a3c\u60c5\u5831 &#8211; \u89e3\u6c7a\u3057\u3001\u5229\u7528\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u8868\u793a\u3059\u308b\u3002<\/p>\n<ul class=\"post-ul\">\n<li>No Credentials &#8211; Show a Hint Dialog with all the available sign in accounts<\/li>\n<\/ul>\n<p>\u300cRESOLUTION_REQUIRED\u300d\u3068\u3044\u3046\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u3001\u89e3\u6c7a\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u8907\u6570\u306e\u8a8d\u8a3c\u60c5\u5831\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001startResolutionForResult\u3092\u547c\u3073\u51fa\u3057\u3066\u3001\u305d\u306e\u7d50\u679c\u3092onActivityResult\u30e1\u30bd\u30c3\u30c9\u3067\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u8907\u6570\u306e\u89e3\u6c7a\u304c\u884c\u308f\u308c\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u3001\u30d6\u30fc\u30eb\u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u305d\u308c\u306b\u3088\u3063\u3066\u3001\u8907\u6570\u306e\u30c0\u30a4\u30a2\u30ed\u30b0\u304c\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u9632\u304e\u307e\u3059\u3002SmartLock\u306e\u8981\u70b9\u3092\u7406\u89e3\u3057\u305f\u306e\u3067\u3001\u8a8d\u8a3c\u60c5\u5831\u306e\u4fdd\u5b58\u3068\u524a\u9664\u306e\u6a5f\u80fd\u3092\u5b8c\u5168\u306b\u5b9f\u88c5\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u69cb\u9020<\/h3>\n<h3>\u30b3\u30fc\u30c9<\/h3>\n<p>\u4ee5\u4e0b\u306b activity_main.xml \u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u30b3\u30fc\u30c9\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\r\n&lt;android.support.constraint.ConstraintLayout xmlns:android=\"https:\/\/schemas.android.com\/apk\/res\/android\"\r\n    xmlns:app=\"https:\/\/schemas.android.com\/apk\/res-auto\"\r\n    xmlns:tools=\"https:\/\/schemas.android.com\/tools\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"match_parent\"\r\n    android:importantForAutofill=\"noExcludeDescendants\"&gt;\r\n\r\n\r\n    &lt;Button\r\n        android:id=\"@+id\/btnLogin\"\r\n        android:layout_width=\"wrap_content\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:layout_marginLeft=\"8dp\"\r\n        android:layout_marginRight=\"8dp\"\r\n        android:layout_marginTop=\"24dp\"\r\n        android:text=\"Login\"\r\n        app:layout_constraintLeft_toLeftOf=\"parent\"\r\n        app:layout_constraintRight_toRightOf=\"parent\"\r\n        app:layout_constraintTop_toBottomOf=\"@+id\/inPassword\" \/&gt;\r\n\r\n    &lt;EditText\r\n        android:id=\"@+id\/inEmail\"\r\n        android:layout_width=\"0dp\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:layout_marginLeft=\"16dp\"\r\n        android:layout_marginRight=\"16dp\"\r\n        android:layout_marginTop=\"32dp\"\r\n        android:ems=\"10\"\r\n        android:hint=\"email\"\r\n        android:inputType=\"textEmailAddress\"\r\n        app:layout_constraintHorizontal_bias=\"0.503\"\r\n        app:layout_constraintLeft_toLeftOf=\"parent\"\r\n        app:layout_constraintRight_toRightOf=\"parent\" \/&gt;\r\n\r\n\r\n    &lt;EditText\r\n        android:id=\"@+id\/inPassword\"\r\n        android:layout_width=\"0dp\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:layout_marginLeft=\"16dp\"\r\n        android:layout_marginRight=\"16dp\"\r\n        android:layout_marginTop=\"8dp\"\r\n        android:ems=\"10\"\r\n        android:hint=\"password\"\r\n        android:inputType=\"textPassword\"\r\n        app:layout_constraintLeft_toLeftOf=\"parent\"\r\n        app:layout_constraintRight_toRightOf=\"parent\"\r\n        app:layout_constraintTop_toBottomOf=\"@+id\/inEmail\" \/&gt;\r\n\r\n\r\n&lt;\/android.support.constraint.ConstraintLayout&gt;\r\n<\/code><\/pre>\n<p>android:importantForAutofill=&#8221;noExcludeDescendants&#8221;&gt;\u306f\u3001EditText\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u306e\u81ea\u52d5\u5165\u529b\u3092\u7121\u52b9\u306b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u81ea\u52d5\u5165\u529bAPI\u306b\u3064\u3044\u3066\u306f\u3001\u5225\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u8aac\u660e\u3057\u307e\u3059\u3002MainActivity.java\u30af\u30e9\u30b9\u306e\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.androidgooglesmartlock;\r\n\r\nimport android.app.PendingIntent;\r\nimport android.content.Intent;\r\nimport android.content.IntentSender;\r\nimport android.support.annotation.NonNull;\r\nimport android.support.annotation.Nullable;\r\nimport android.support.v7.app.AppCompatActivity;\r\nimport android.os.Bundle;\r\nimport android.text.TextUtils;\r\nimport android.util.Log;\r\nimport android.util.Patterns;\r\nimport android.view.View;\r\nimport android.widget.Button;\r\nimport android.widget.EditText;\r\nimport android.widget.Toast;\r\n\r\nimport com.google.android.gms.auth.api.Auth;\r\nimport com.google.android.gms.auth.api.credentials.Credential;\r\nimport com.google.android.gms.auth.api.credentials.CredentialPickerConfig;\r\nimport com.google.android.gms.auth.api.credentials.CredentialRequest;\r\nimport com.google.android.gms.auth.api.credentials.CredentialRequestResponse;\r\nimport com.google.android.gms.auth.api.credentials.CredentialRequestResult;\r\nimport com.google.android.gms.auth.api.credentials.Credentials;\r\nimport com.google.android.gms.auth.api.credentials.CredentialsClient;\r\nimport com.google.android.gms.auth.api.credentials.CredentialsOptions;\r\nimport com.google.android.gms.auth.api.credentials.HintRequest;\r\nimport com.google.android.gms.auth.api.credentials.IdentityProviders;\r\nimport com.google.android.gms.auth.api.signin.GoogleSignIn;\r\nimport com.google.android.gms.auth.api.signin.GoogleSignInAccount;\r\nimport com.google.android.gms.auth.api.signin.GoogleSignInClient;\r\nimport com.google.android.gms.auth.api.signin.GoogleSignInOptions;\r\nimport com.google.android.gms.common.ConnectionResult;\r\nimport com.google.android.gms.common.api.ApiException;\r\nimport com.google.android.gms.common.api.CommonStatusCodes;\r\nimport com.google.android.gms.common.api.GoogleApiClient;\r\nimport com.google.android.gms.common.api.ResolvableApiException;\r\nimport com.google.android.gms.common.api.ResultCallback;\r\nimport com.google.android.gms.common.api.Status;\r\nimport com.google.android.gms.tasks.OnCompleteListener;\r\nimport com.google.android.gms.tasks.Task;\r\n\r\nimport java.util.regex.Pattern;\r\n\r\npublic class MainActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, ResultCallback&lt;CredentialRequestResult&gt; {\r\n\r\n    private GoogleApiClient mGoogleApiClient;\r\n    CredentialsClient mCredentialsApiClient;\r\n    CredentialRequest mCredentialRequest;\r\n    public static final String TAG = \"API123\";\r\n    private static final int RC_READ = 3;\r\n    private static final int RC_SAVE = 1;\r\n    private static final int RC_HINT = 2;\r\n    boolean isResolving;\r\n\r\n    Button btnLogin;\r\n    EditText inEmail, inPassword;\r\n\r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_main);\r\n\r\n        setUpGoogleApiClient();\r\n\r\n        \/\/needed for Android Oreo.\r\n        CredentialsOptions options = new CredentialsOptions.Builder()\r\n                .forceEnableSaveDialog()\r\n                .build();\r\n\r\n\r\n        mCredentialsApiClient = Credentials.getClient(this, options);\r\n        createCredentialRequest();\r\n\r\n        btnLogin = findViewById(R.id.btnLogin);\r\n        inEmail = findViewById(R.id.inEmail);\r\n        inPassword = findViewById(R.id.inPassword);\r\n\r\n        btnLogin.setOnClickListener(new View.OnClickListener() {\r\n            @Override\r\n            public void onClick(View view) {\r\n\r\n                String email = inEmail.getText().toString();\r\n                String password = inPassword.getText().toString();\r\n                if (TextUtils.isEmpty(email) || TextUtils.isEmpty(password) || !Patterns.EMAIL_ADDRESS.matcher(email).matches())\r\n                    showToast(\"Please enter valid email and password\");\r\n\r\n                else {\r\n\r\n                    Credential credential = new Credential.Builder(email)\r\n                            .setPassword(password)\r\n                            .build();\r\n\r\n                    saveCredentials(credential);\r\n                }\r\n\r\n            }\r\n        });\r\n    }\r\n\r\n    public void setUpGoogleApiClient() {\r\n\r\n\r\n        mGoogleApiClient = new GoogleApiClient.Builder(this)\r\n                .addConnectionCallbacks(this)\r\n                .addApi(Auth.CREDENTIALS_API)\r\n                .enableAutoManage(this, this)\r\n                .build();\r\n    }\r\n\r\n    public void createCredentialRequest() {\r\n        mCredentialRequest = new CredentialRequest.Builder()\r\n                .setPasswordLoginSupported(true)\r\n                .setAccountTypes(IdentityProviders.GOOGLE)\r\n                .build();\r\n    }\r\n\r\n    public void requestCredentials() {\r\n        Auth.CredentialsApi.request(mGoogleApiClient, mCredentialRequest).setResultCallback(this);\r\n    }\r\n\r\n\r\n    private void onCredentialRetrieved(Credential credential) {\r\n        String accountType = credential.getAccountType();\r\n        if (accountType == null) {\r\n            \/\/ Sign the user in with information from the Credential.\r\n            gotoNext();\r\n        } else if (accountType.equals(IdentityProviders.GOOGLE)) {\r\n\r\n\r\n            GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)\r\n                    .requestEmail()\r\n                    .build();\r\n\r\n            GoogleSignInClient signInClient = GoogleSignIn.getClient(this, gso);\r\n            Task&lt;GoogleSignInAccount&gt; task = signInClient.silentSignIn();\r\n\r\n            task.addOnCompleteListener(new OnCompleteListener&lt;GoogleSignInAccount&gt;() {\r\n                @Override\r\n                public void onComplete(@NonNull Task&lt;GoogleSignInAccount&gt; task) {\r\n                    if (task.isSuccessful()) {\r\n                        \/\/ See \"Handle successful credential requests\"\r\n                        populateLoginFields(task.getResult().getEmail(), null);\r\n                    } else {\r\n                        showToast(\"Unable to do a google sign in\");\r\n                    }\r\n                }\r\n            });\r\n        }\r\n    }\r\n\r\n\r\n    public void gotoNext() {\r\n        startActivity(new Intent(this, SecondActivity.class));\r\n        finish();\r\n    }\r\n\r\n\r\n    public void showToast(String s) {\r\n        Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();\r\n    }\r\n\r\n\r\n    @Override\r\n    public void onConnected(@Nullable Bundle bundle) {\r\n        Log.d(\"API123\", \"onConnected\");\r\n        requestCredentials();\r\n\r\n    }\r\n\r\n    @Override\r\n    public void onConnectionSuspended(int i) {\r\n\r\n    }\r\n\r\n    @Override\r\n    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {\r\n\r\n    }\r\n\r\n    @Override\r\n    protected void onDestroy() {\r\n        mGoogleApiClient.disconnect();\r\n        super.onDestroy();\r\n    }\r\n\r\n    @Override\r\n    public void onResult(@NonNull CredentialRequestResult credentialRequestResult) {\r\n\r\n        Status status = credentialRequestResult.getStatus();\r\n        if (status.isSuccess()) {\r\n            onCredentialRetrieved(credentialRequestResult.getCredential());\r\n        } else {\r\n            if (status.getStatusCode() == CommonStatusCodes.RESOLUTION_REQUIRED) {\r\n                try {\r\n                    isResolving = true;\r\n                    status.startResolutionForResult(this, RC_READ);\r\n                } catch (IntentSender.SendIntentException e) {\r\n                    Log.d(TAG, e.toString());\r\n                }\r\n            } else {\r\n\r\n                showHintDialog();\r\n            }\r\n        }\r\n    }\r\n\r\n    @Override\r\n    protected void onActivityResult(int requestCode, int resultCode, Intent data) {\r\n        super.onActivityResult(requestCode, resultCode, data);\r\n\r\n        Log.d(TAG, \"onActivityResult\");\r\n        if (requestCode == RC_READ) {\r\n            if (resultCode == RESULT_OK) {\r\n                Credential credential = data.getParcelableExtra(Credential.EXTRA_KEY);\r\n                onCredentialRetrieved(credential);\r\n            } else {\r\n                Log.d(TAG, \"Request failed\");\r\n            }\r\n            isResolving = false;\r\n        }\r\n\r\n        if (requestCode == RC_HINT) {\r\n            if (resultCode == RESULT_OK) {\r\n                Credential credential = data.getParcelableExtra(Credential.EXTRA_KEY);\r\n                populateLoginFields(credential.getId(), \"\");\r\n            } else {\r\n                showToast(\"Hint dialog closed\");\r\n            }\r\n        }\r\n\r\n        if (requestCode == RC_SAVE) {\r\n            if (resultCode == RESULT_OK) {\r\n                Log.d(TAG, \"SAVE: OK\");\r\n                gotoNext();\r\n                showToast(\"Credentials saved\");\r\n            }\r\n        }\r\n\r\n\r\n    }\r\n\r\n    public void populateLoginFields(String email, String password) {\r\n        if (!TextUtils.isEmpty(email))\r\n            inEmail.setText(email);\r\n\r\n        if (!TextUtils.isEmpty(password))\r\n            inPassword.setText(password);\r\n    }\r\n\r\n    public void showHintDialog() {\r\n        HintRequest hintRequest = new HintRequest.Builder()\r\n                .setHintPickerConfig(new CredentialPickerConfig.Builder()\r\n                        .setShowCancelButton(true)\r\n                        .build())\r\n                .setEmailAddressIdentifierSupported(true)\r\n                .setAccountTypes(IdentityProviders.GOOGLE)\r\n                .build();\r\n\r\n        PendingIntent intent = mCredentialsApiClient.getHintPickerIntent(hintRequest);\r\n        try {\r\n            startIntentSenderForResult(intent.getIntentSender(), RC_HINT, null, 0, 0, 0);\r\n        } catch (IntentSender.SendIntentException e) {\r\n            Log.e(TAG, \"Could not start hint picker Intent\", e);\r\n        }\r\n    }\r\n\r\n    public void saveCredentials(Credential credential) {\r\n\r\n\r\n        mCredentialsApiClient.save(credential).addOnCompleteListener(new OnCompleteListener&lt;Void&gt;() {\r\n            @Override\r\n            public void onComplete(@NonNull Task&lt;Void&gt; task) {\r\n                if (task.isSuccessful()) {\r\n                    Log.d(TAG, \"SAVE: OK\");\r\n                    showToast(\"Credentials saved\");\r\n                    return;\r\n                }\r\n\r\n                Exception e = task.getException();\r\n                if (e instanceof ResolvableApiException) {\r\n                    \/\/ Try to resolve the save request. This will prompt the user if\r\n                    \/\/ the credential is new.\r\n                    ResolvableApiException rae = (ResolvableApiException) e;\r\n                    try {\r\n                        rae.startResolutionForResult(MainActivity.this, RC_SAVE);\r\n                    } catch (IntentSender.SendIntentException f) {\r\n                        \/\/ Could not resolve the request\r\n                        Log.e(TAG, \"Failed to send resolution.\", f);\r\n                        showToast(\"Saved failed\");\r\n                    }\r\n                } else {\r\n                    \/\/ Request has no resolution\r\n                    showToast(\"Saved failed\");\r\n                }\r\n            }\r\n        });\r\n\r\n    }\r\n}\r\n\r\n<\/code><\/pre>\n<p>onConnected\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u5229\u7528\u53ef\u80fd\u306a\u8a8d\u8a3c\u60c5\u5831\u3092\u30ea\u30af\u30a8\u30b9\u30c8\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u958b\u59cb\u3055\u308c\u308b\u3068\u3059\u3050\u306b\u3001\u8a8d\u8a3c\u60c5\u5831\u304c\u3042\u308c\u3070\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u5358\u4e00\u306e\u8a8d\u8a3c\u60c5\u5831\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u81ea\u52d5\u7684\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3057\u3066\u6b21\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002activity_second.xml \u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306b\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\r\n&lt;android.support.constraint.ConstraintLayout xmlns:android=\"https:\/\/schemas.android.com\/apk\/res\/android\"\r\n    xmlns:app=\"https:\/\/schemas.android.com\/apk\/res-auto\"\r\n    xmlns:tools=\"https:\/\/schemas.android.com\/tools\"\r\n    android:layout_width=\"match_parent\"\r\n    android:layout_height=\"match_parent\"\r\n    tools:context=\".SecondActivity\"&gt;\r\n\r\n    &lt;Button\r\n        android:id=\"@+id\/btnDeleteAccount\"\r\n        android:layout_width=\"wrap_content\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:layout_marginTop=\"8dp\"\r\n        android:text=\"Delete account\"\r\n        app:layout_constraintEnd_toEndOf=\"parent\"\r\n        app:layout_constraintStart_toStartOf=\"parent\"\r\n        app:layout_constraintTop_toBottomOf=\"@+id\/btnSignOut\" \/&gt;\r\n\r\n    &lt;TextView\r\n        android:id=\"@+id\/textView\"\r\n        android:layout_width=\"wrap_content\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:text=\"You are logged in.\"\r\n        app:layout_constraintBottom_toBottomOf=\"parent\"\r\n        app:layout_constraintEnd_toEndOf=\"parent\"\r\n        app:layout_constraintStart_toStartOf=\"parent\"\r\n        app:layout_constraintTop_toTopOf=\"parent\" \/&gt;\r\n\r\n    &lt;Button\r\n        android:id=\"@+id\/btnSignOut\"\r\n        android:layout_width=\"wrap_content\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:layout_marginTop=\"8dp\"\r\n        android:text=\"SIGN OUT\"\r\n        app:layout_constraintEnd_toEndOf=\"parent\"\r\n        app:layout_constraintStart_toStartOf=\"parent\"\r\n        app:layout_constraintTop_toBottomOf=\"@+id\/textView\" \/&gt;\r\n\r\n    &lt;Button\r\n        android:id=\"@+id\/btnSignOutDisableAutoSign\"\r\n        android:layout_width=\"wrap_content\"\r\n        android:layout_height=\"wrap_content\"\r\n        android:text=\"SIGN OUT AND DISABLE AUTO SIGN IN\"\r\n        app:layout_constraintEnd_toEndOf=\"parent\"\r\n        app:layout_constraintStart_toStartOf=\"parent\"\r\n        app:layout_constraintTop_toBottomOf=\"@+id\/btnDeleteAccount\" \/&gt;\r\n&lt;\/android.support.constraint.ConstraintLayout&gt;\r\n<\/code><\/pre>\n<p>\u6b21\u306e\u64cd\u4f5c\u3092SecondActivity\u3067\u884c\u3044\u307e\u3059 &#8211; \u30b5\u30a4\u30f3\u30a2\u30a6\u30c8\u3001\u6b21\u56de\u306e\u81ea\u52d5\u30b5\u30a4\u30f3\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3057\u3066\u30b5\u30a4\u30f3\u30a2\u30a6\u30c8\u3001\u8cc7\u683c\u60c5\u5831\u3092\u524a\u9664\u3057\u307e\u3059\u3002SecondActivity.java\u30af\u30e9\u30b9\u306e\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.androidgooglesmartlock;\r\n\r\nimport android.content.Intent;\r\nimport android.content.IntentSender;\r\nimport android.support.annotation.NonNull;\r\nimport android.support.annotation.Nullable;\r\nimport android.support.v7.app.AppCompatActivity;\r\nimport android.os.Bundle;\r\nimport android.util.Log;\r\nimport android.view.View;\r\nimport android.widget.Button;\r\nimport android.widget.Toast;\r\n\r\nimport com.google.android.gms.auth.api.Auth;\r\nimport com.google.android.gms.auth.api.credentials.Credential;\r\nimport com.google.android.gms.auth.api.credentials.CredentialRequest;\r\nimport com.google.android.gms.auth.api.credentials.CredentialRequestResult;\r\nimport com.google.android.gms.auth.api.credentials.Credentials;\r\nimport com.google.android.gms.auth.api.credentials.CredentialsClient;\r\nimport com.google.android.gms.common.ConnectionResult;\r\nimport com.google.android.gms.common.api.GoogleApiClient;\r\nimport com.google.android.gms.common.api.ResultCallback;\r\nimport com.google.android.gms.common.api.Status;\r\n\r\npublic class SecondActivity extends AppCompatActivity implements View.OnClickListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, ResultCallback&lt;CredentialRequestResult&gt; {\r\n\r\n\r\n    Button btnSignOut, btnSignOutDisableAuto, btnDelete;\r\n    private GoogleApiClient mGoogleApiClient;\r\n    CredentialsClient mCredentialsApiClient;\r\n    CredentialRequest mCredentialRequest;\r\n    public static final String TAG = \"API123\";\r\n    private static final int RC_REQUEST = 4;\r\n\r\n\r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        setContentView(R.layout.activity_second);\r\n\r\n        setUpGoogleApiClient();\r\n        mCredentialsApiClient = Credentials.getClient(this);\r\n\r\n\r\n        btnSignOut = findViewById(R.id.btnSignOut);\r\n        btnSignOutDisableAuto = findViewById(R.id.btnSignOutDisableAutoSign);\r\n        btnDelete = findViewById(R.id.btnDeleteAccount);\r\n\r\n        btnSignOut.setOnClickListener(this);\r\n        btnSignOutDisableAuto.setOnClickListener(this);\r\n        btnDelete.setOnClickListener(this);\r\n    }\r\n\r\n    @Override\r\n    public void onClick(View view) {\r\n        switch (view.getId()) {\r\n            case R.id.btnSignOut:\r\n                signOut(false);\r\n                break;\r\n            case R.id.btnSignOutDisableAutoSign:\r\n                signOut(true);\r\n                break;\r\n            case R.id.btnDeleteAccount:\r\n                requestCredentials();\r\n\r\n                break;\r\n        }\r\n    }\r\n\r\n    @Override\r\n    public void onConnected(@Nullable Bundle bundle) {\r\n\r\n    }\r\n\r\n    @Override\r\n    public void onConnectionSuspended(int i) {\r\n\r\n    }\r\n\r\n    @Override\r\n    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {\r\n\r\n    }\r\n\r\n    @Override\r\n    public void onResult(@NonNull CredentialRequestResult credentialRequestResult) {\r\n\r\n        Status status = credentialRequestResult.getStatus();\r\n        if (status.isSuccess()) {\r\n            onCredentialSuccess(credentialRequestResult.getCredential());\r\n        } else {\r\n            if (status.hasResolution()) {\r\n                try {\r\n                    status.startResolutionForResult(this, RC_REQUEST);\r\n                } catch (IntentSender.SendIntentException e) {\r\n                    Log.d(TAG, e.toString());\r\n                }\r\n            } else {\r\n                showToast(\"Request Failed\");\r\n            }\r\n        }\r\n    }\r\n\r\n    public void setUpGoogleApiClient() {\r\n\r\n        mGoogleApiClient = new GoogleApiClient.Builder(this)\r\n                .addConnectionCallbacks(this)\r\n                .addApi(Auth.CREDENTIALS_API)\r\n                .enableAutoManage(this, this)\r\n                .build();\r\n    }\r\n\r\n\r\n    private void requestCredentials() {\r\n        mCredentialRequest = new CredentialRequest.Builder()\r\n                .setPasswordLoginSupported(true)\r\n                .build();\r\n\r\n        Auth.CredentialsApi.request(mGoogleApiClient, mCredentialRequest).setResultCallback(this);\r\n    }\r\n\r\n\r\n    @Override\r\n    protected void onDestroy() {\r\n        mGoogleApiClient.disconnect();\r\n        super.onDestroy();\r\n    }\r\n\r\n    private void onCredentialSuccess(Credential credential) {\r\n\r\n        Auth.CredentialsApi.delete(mGoogleApiClient, credential).setResultCallback(new ResultCallback&lt;Status&gt;() {\r\n            @Override\r\n            public void onResult(@NonNull Status status) {\r\n                if (status.isSuccess()) {\r\n                    signOut(false);\r\n                } else {\r\n                    showToast(\"Account Deletion Failed\");\r\n                }\r\n            }\r\n        });\r\n\r\n\r\n    }\r\n\r\n    @Override\r\n    protected void onActivityResult(int requestCode, int resultCode, Intent data) {\r\n        super.onActivityResult(requestCode, resultCode, data);\r\n        if (requestCode == RC_REQUEST) {\r\n            if (resultCode == RESULT_OK) {\r\n                showToast(\"Deleted\");\r\n                Credential credential = data.getParcelableExtra(Credential.EXTRA_KEY);\r\n                onCredentialSuccess(credential);\r\n            } else {\r\n                Log.d(TAG, \"Request failed\");\r\n            }\r\n        }\r\n    }\r\n\r\n    public void showToast(String s) {\r\n        Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show();\r\n    }\r\n\r\n    private void signOut(boolean disableAutoSignIn) {\r\n\r\n        if (disableAutoSignIn)\r\n            Auth.CredentialsApi.disableAutoSignIn(mGoogleApiClient);\r\n\r\n        startActivity(new Intent(this, MainActivity.class));\r\n        finish();\r\n    }\r\n}\r\n\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u884c\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002\u6700\u521d\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u30a2\u30d7\u30ea\u3092\u958b\u304f\u305f\u3073\u306b\u81ea\u52d5\u7684\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u81ea\u52d5\u30b5\u30a4\u30f3\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3057\u306a\u3044\u9650\u308a\u3001\u30b5\u30a4\u30f3\u30a4\u30f3\u3059\u308b\u524d\u306b\u8a31\u53ef\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u5225\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u4eca\u5ea6\u306f\u305d\u308c\u3092\u524a\u9664\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u524a\u9664\u5f8c\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u6700\u521d\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u81ea\u52d5\u7684\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3057\u307e\u3059\u3002\u3053\u308c\u3067\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306f\u7d42\u4e86\u3067\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u4ee5\u4e0b\u306e\u30ea\u30f3\u30af\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30f3\u30c9\u30ed\u30a4\u30c9\u306eGoogle\u30b9\u30de\u30fc\u30c8\u30ed\u30c3\u30af<\/p>\n<p>\u4ee5\u4e0b\u306eGithub\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30ea\u30f3\u30af<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3067\u306f\u3001Smart 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