我想实现一个SyncAdapter因为我想与服务器同步内容。看来，要做到这一点，你需要注册为您在SyncAdapter XML属性文件中指定的权威ContentProvider的。

I want to implement a SyncAdapter for a content I want to synchronize with a server. It seems that to do so, you need a ContentProvider registered for the authority you specify in the SyncAdapter XML property file.

由于我不希望这些内容可以访问到手机上的其余部分，我还没有实现我自己的ContentProvider并用于个人实现存储这些内容。

As I don't want this content to be accessible to the rest of the phone, I haven't implemented my own ContentProvider and used a personal implementation to store this content.

你知道，如果有可能提供一种使用SyncAdapter的同步，而不提供ContentProvider的？

Do you know if it is possible to provide a synchronization using a SyncAdapter without providing a ContentProvider?

非常感谢你。

推荐答案

您总是有实施SyncAdapter时指定一个内容提供商，但是这并不是说，它实际上已经做任何事情。

You always have to specify a content provider when implementing a SyncAdapter, but that's not to say it actually has to do anything.

我已经写了创建帐户，并与整合SyncAdapters账户与同步，在Android框架不一定存储的内容在一个标准的供应商

I've written SyncAdapters that create accounts and integrate with the "Accounts & sync" framework in Android that don't necessarily store their content in a standard provider.

在你的XML / syncadapter.xml：

In your xml/syncadapter.xml:

<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android" 
    android:accountType="com.company.app"
    android:contentAuthority="com.company.content"
    android:supportsUploading="false" />

在你的清单：

<provider android:name="DummyProvider"
    android:authorities="com.company.content"
    android:syncable="true"
    android:label="DummyProvider" />   

和再存在，添加一个虚拟的供应商，并没有做任何事情，除了有用DummyProvider.java：

And then add a dummy provider that doesn't do anything useful except exist, DummyProvider.java:

public class DummyProvider extends ContentProvider {

    @Override
    public int delete(Uri uri, String selection, String[] selectionArgs) {
         return 0;
    }

    @Override
    public String getType(Uri uri) {
        return null;
    }

    @Override
    public Uri insert(Uri uri, ContentValues values) {
        return null;
    }

    @Override
    public boolean onCreate() {
        return false;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection,
                    String[] selectionArgs, String sortOrder) {
        return null;
    }

    @Override
    public int update(Uri uri, ContentValues values, String selection,
                    String[] selectionArgs) {
        return 0;
    }
}