Android addPeriodicSync不工作

使用

SyncAdapter

时出现问题。我在指南中创建了它，但当我尝试使用

addPeriodicSync

时，没有任何效果

我阅读了在堆栈溢出上找到的所有答案，但仍然不知道问题出在哪里。请寻求帮助

代码：

Manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.igordotsenko.dotsenkorssreader" >

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

    <application
        android:name="com.activeandroid.app.Application"
        android:allowBackup="true"
        android:icon="@mipmap/ic_rss"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".ItemListActivity" >
        </activity>
        <activity android:name=".ItemContentActivity" >
        </activity>

        <service android:name=".RefreshService" />

        <provider
            android:name=".ReaderContentProvider"
            android:authorities="com.igordotsenko.dotsenkorssreader"
            android:enabled="true"
            android:exported="true" >
        </provider>

        <service
            android:name=".syncadapter.SyncService"
            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/syncadapter" />
        </service>

        <service
            android:name=".syncadapter.AuthenticatorService"
            android:exported="true"
            >
            <intent-filter>
                <action android:name="android.accounts.AccountAuthenticator"/>
            </intent-filter>
            <meta-data
                android:name="android.accounts.AccountAuthenticator"
                android:resource="@xml/authenticator" />

        </service>
    </application>

</manifest>

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

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:accountType="dummy.com"
    />

同步服务

package com.igordotsenko.dotsenkorssreader.syncadapter;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

import java.util.Objects;

public class SyncService extends Service {
    private static final Object syncAdapterLock = new Object();
    private static ReaderSyncAdapter syncAdapter;

    public SyncService() {
        synchronized (syncAdapterLock) {
            Log.i(ReaderSyncAdapter.SA_LOG, "SyncService started");
            if ( syncAdapter == null )
                syncAdapter = new ReaderSyncAdapter(getApplicationContext(), true);
            Log.i(ReaderSyncAdapter.SA_LOG, "SyncService finished");
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        Log.i(ReaderSyncAdapter.SA_LOG, "SyncService onBind");
        return syncAdapter.getSyncAdapterBinder();
    }
}

package com.igordotsenko.dotsenkorssreader.syncadapter;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

public class AuthenticatorService extends Service {
    private ReaderAccountAuthenticator readerAccountAuthenticator;

    public AuthenticatorService() {
        readerAccountAuthenticator = new ReaderAccountAuthenticator(this);
    }

    @Override
    public IBinder onBind(Intent intent) {
        return readerAccountAuthenticator.getIBinder();
    }
}

syncadapter.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.igordotsenko.dotsenkorssreader" >

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

    <application
        android:name="com.activeandroid.app.Application"
        android:allowBackup="true"
        android:icon="@mipmap/ic_rss"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".ItemListActivity" >
        </activity>
        <activity android:name=".ItemContentActivity" >
        </activity>

        <service android:name=".RefreshService" />

        <provider
            android:name=".ReaderContentProvider"
            android:authorities="com.igordotsenko.dotsenkorssreader"
            android:enabled="true"
            android:exported="true" >
        </provider>

        <service
            android:name=".syncadapter.SyncService"
            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/syncadapter" />
        </service>

        <service
            android:name=".syncadapter.AuthenticatorService"
            android:exported="true"
            >
            <intent-filter>
                <action android:name="android.accounts.AccountAuthenticator"/>
            </intent-filter>
            <meta-data
                android:name="android.accounts.AccountAuthenticator"
                android:resource="@xml/authenticator" />

        </service>
    </application>

</manifest>

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

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:accountType="dummy.com"
    />

ReaderAccountAuthenticator

只是一些基本的方法，没有OUD实现，因为我的帐户只是“虚拟的”

authenticator.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.igordotsenko.dotsenkorssreader" >

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

    <application
        android:name="com.activeandroid.app.Application"
        android:allowBackup="true"
        android:icon="@mipmap/ic_rss"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".ItemListActivity" >
        </activity>
        <activity android:name=".ItemContentActivity" >
        </activity>

        <service android:name=".RefreshService" />

        <provider
            android:name=".ReaderContentProvider"
            android:authorities="com.igordotsenko.dotsenkorssreader"
            android:enabled="true"
            android:exported="true" >
        </provider>

        <service
            android:name=".syncadapter.SyncService"
            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/syncadapter" />
        </service>

        <service
            android:name=".syncadapter.AuthenticatorService"
            android:exported="true"
            >
            <intent-filter>
                <action android:name="android.accounts.AccountAuthenticator"/>
            </intent-filter>
            <meta-data
                android:name="android.accounts.AccountAuthenticator"
                android:resource="@xml/authenticator" />

        </service>
    </application>

</manifest>

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

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:accountType="dummy.com"
    />

---

我发现问题在于，周期性同步的最小间隔是1分钟，所以同步每分钟触发一次，但不是我设置的2秒

---

问题已解决。

我发现问题在于，周期性同步的最小间隔是1分钟，所以同步每分钟触发一次，但不是我设置的2秒

问题已解决。

addPeriodicSync（）仅适用于在syncadapter.xml中作为true加载的supportsUploading。就这样

android:supportsUploading="true"

addPeriodicSync（）仅在syncadapter.xml中与supportsUploading一起使用。就这样

android:supportsUploading="true"

---

@user1506104我的答案是Kit Kat版本的实际答案，我发现。现在它似乎被设置为至少1小时，这（请参见中的

pollFrequency

）@user1506104我的答案是Kit-Kat版本的实际答案，我发现。现在，它似乎被设置为至少1小时，这（请参见中的

pollFrequency