feature(account): add custom account

app/src/main/AndroidManifest.xml

@@ -2,7 +2,11 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.yueban.customcontact">
 
+    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
+    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
+
     <application
+        android:name=".MyApp"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -16,6 +20,18 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <service
+            android:name=".account.AuthenticatorService"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.accounts.AccountAuthenticator" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.accounts.AccountAuthenticator"
+                android:resource="@xml/auth" />
+        </service>
     </application>
 
 </manifest>

app/src/main/java/com/yueban/customcontact/MainActivity.kt

@@ -2,11 +2,14 @@ package com.yueban.customcontact
 
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
+import com.yueban.customcontact.account.CustomAccountManger
 
 class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        CustomAccountManger.addAccount()
     }
 }

app/src/main/java/com/yueban/customcontact/MyApp.kt

@@ -0,0 +1,23 @@
+package com.yueban.customcontact
+
+import android.app.Application
+import android.content.Context
+
+/**
+ * @author yueban fbzhh007@gmail.com
+ * @date 2019-11-30
+ */
+class MyApp : Application() {
+    override fun onCreate() {
+        super.onCreate()
+        context = this
+    }
+
+    companion object {
+        private lateinit var context: MyApp
+
+        fun getContext(): Context {
+            return context
+        }
+    }
+}

app/src/main/java/com/yueban/customcontact/account/AuthenticatorService.kt

@@ -0,0 +1,96 @@
+package com.yueban.customcontact.account
+
+import android.accounts.*
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.os.IBinder
+
+/**
+ * @author yueban fbzhh007@gmail.com
+ * @date 2019-11-30
+ */
+class AuthenticatorService : Service() {
+    private var authenticator: Authenticator? = null
+
+    protected fun getAuthenticator(): Authenticator {
+        if (authenticator == null) {
+            authenticator = Authenticator(this)
+        }
+        return authenticator!!
+    }
+
+    override fun onBind(intent: Intent): IBinder? {
+        return if (AccountManager.ACTION_AUTHENTICATOR_INTENT == intent.action) {
+            getAuthenticator().iBinder
+        } else {
+            null
+        }
+    }
+
+    class Authenticator internal constructor(context: Context?) :
+        AbstractAccountAuthenticator(context) {
+        override fun addAccount(
+            response: AccountAuthenticatorResponse,
+            accountType: String,
+            authTokenType: String,
+            requiredFeatures: Array<String>,
+            options: Bundle
+        ): Bundle? {
+            return null
+        }
+
+        @Throws(NetworkErrorException::class)
+        override fun getAccountRemovalAllowed(
+            response: AccountAuthenticatorResponse,
+            account: Account
+        ): Bundle {
+            return super.getAccountRemovalAllowed(response, account)
+        }
+
+        override fun confirmCredentials(
+            response: AccountAuthenticatorResponse?,
+            account: Account?,
+            options: Bundle?
+        ): Bundle? {
+            return null
+        }
+
+        override fun editProperties(
+            response: AccountAuthenticatorResponse,
+            accountType: String
+        ): Bundle? {
+            return null
+        }
+
+        override fun getAuthToken(
+            response: AccountAuthenticatorResponse,
+            account: Account,
+            authTokenType: String,
+            options: Bundle
+        ): Bundle? {
+            return null
+        }
+
+        override fun getAuthTokenLabel(authTokenType: String): String? {
+            return null
+        }
+
+        override fun hasFeatures(
+            response: AccountAuthenticatorResponse,
+            account: Account,
+            features: Array<String>
+        ): Bundle? {
+            return null
+        }
+
+        override fun updateCredentials(
+            response: AccountAuthenticatorResponse, account: Account, authTokenType: String,
+            options: Bundle
+        ): Bundle? {
+            return null
+        }
+    }
+
+}

app/src/main/java/com/yueban/customcontact/account/CustomAccountManger.kt

@@ -0,0 +1,32 @@
+package com.yueban.customcontact.account
+
+import android.accounts.Account
+import android.accounts.AccountManager
+import android.os.Build
+import com.yueban.customcontact.MyApp
+import com.yueban.customcontact.R
+
+/**
+ * @author yueban fbzhh007@gmail.com
+ * @date 2019-11-30
+ */
+class CustomAccountManger {
+    companion object {
+        val ACCOUNT_NAME = MyApp.getContext().getString(R.string.account_name)
+        val ACCOUNT_TYPE = MyApp.getContext().getString(R.string.account_type)
+
+        fun addAccount() {
+            val account = Account(ACCOUNT_NAME, ACCOUNT_TYPE)
+            AccountManager.get(MyApp.getContext()).addAccountExplicitly(account, "", null)
+        }
+
+        fun deleteAccount() {
+            val account = Account(ACCOUNT_NAME, ACCOUNT_TYPE)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
+                AccountManager.get(MyApp.getContext()).removeAccountExplicitly(account)
+            } else {
+                AccountManager.get(MyApp.getContext()).removeAccount(account, null, null)
+            }
+        }
+    }
+}

app/src/main/res/values/strings.xml

@@ -1,4 +1,7 @@
 <resources>
     <string name="app_name">CustomContact</string>
 
+    <!-- account -->
+    <string name="account_name">Custom Account</string>
+    <string name="account_type">com.yueban.customcontact</string>
 </resources>

app/src/main/res/xml/auth.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<account-authenticator xmlns:android="http://schemas.android.com/apk/res/android"
+    android:accountType="@string/account_type"
+    android:icon="@mipmap/ic_launcher"
+    android:label="@string/app_name"
+    android:smallIcon="@mipmap/ic_launcher" />