Service Syncronize不适用于API => 26级

Question

我有一些服务，它不适用于26级及以上的Android。它们已激活，您可以在此图像中看到用户和帐户设置：

即使我重新启动此同步，该服务也不会在应用程序上执行。但它们在较旧的Android API版本中运行良好。

Android Manifest.xml：

使用许可权

    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
    <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
    <uses-permission android:name="android.permission.READ_SYNC_STATS" />

应用

供应商

    <provider
        android:name=".sincronismo.SincronizadorSemFilaContentProvider"
        android:authorities="@string/sincronismo_sem_fila_content_authority"
        android:exported="false"
        android:label="@string/sincronismo_sem_fila_rotulo"
        android:syncable="true" />
    <provider
        android:name=".sincronismo.SincronizadorComFilaContentProvider"
        android:authorities="@string/sincronismo_com_fila_content_authority"
        android:exported="false"
        android:label="@string/sincronismo_com_fila_rotulo"
        android:syncable="true" />

服务

    <service
        android:name=".sincronismo.SincronizadorSemFilaService"
        android:exported="true"
        android:process=":sync">
        <intent-filter>
            <action android:name="android.content.SyncAdapter" />
        </intent-filter>

        <meta-data
            android:name="android.content.SyncAdapter"
            android:resource="@xml/sincronismo_sem_fila_sync_adapter" />
    </service>

    <service
        android:name=".sincronismo.SincronizadorComFilaService"
        android:exported="true"
        android:process=":sync">
        <intent-filter>
            <action android:name="android.content.SyncAdapter" />
        </intent-filter>

        <meta-data
            android:name="android.content.SyncAdapter"
            android:resource="@xml/sincronismo_com_fila_sync_adapter" />
    </service>

SincronizadorComFilaService与SincronizadorSemFilaService有几点不同，但基本相同：

public class SincronizadorComFilaService extends Service {
private static final Object SYNC_ADAPTER_LOCK = new Object();
private static AbstractSincronizadorAdapter syncAdapter;

public SincronizadorComFilaService() {
    super();
}

@Override
public void onCreate() {
    super.onCreate();
    synchronized (SYNC_ADAPTER_LOCK) {
        if (syncAdapter == null){
            syncAdapter = new AbstractSincronizadorAdapter(getApplicationContext(), true) {
                @Override
                protected void executarSincronismo(ServicoFactory servicoFactory,
                        Account account, Bundle extras, String authority,
                        ContentProviderClient provider, SyncResult syncResult)
                        throws AbstractServicoException {
                    servicoFactory.getSincronismoService().executarSincronismoComFila();
                }
            };
        }
    }
}

@Override
public IBinder onBind(Intent intent) {
    return syncAdapter.getSyncAdapterBinder();
}
}

sincronismo_com_fila_sync_adapter.xml，与sincronismo_sem_fila_sync_adapter有一些区别

<?xml version="1.0" encoding="utf-8"?>
<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android"
android:contentAuthority="@string/sincronismo_com_fila_content_authority"
android:accountType="@string/seguranca_tipo_conta"
android:supportsUploading="true"
android:userVisible="true"
android:allowParallelSyncs="false"
android:isAlwaysSyncable="true"
/>

Answer 1

你需要遇到JobService，因为服务现在不是好的解决方案。

https://developer.android.com/reference/android/app/job/JobService

Answer 2

Android已限制API级别26的后台服务.Read here。但是有一些替代服务。你必须把工作转到最新的Work Manager API。

您也可以尝试使用API​​ 21开发的Job Scheduler。另一种选择是Firebase Dispatcher。它适用于API 14。

所有这三个都可以在系统启动操作或网络约束中存活。服务对于同步来说并不是一个很好的解决方案。