Here is my code:
DriveSyncAdapter.java:
public class DriveSyncAdapter extends AbstractThreadedSyncAdapter {
public DriveSyncAdapter(Context context, boolean autoInitialize) {
super(context, autoInitialize);
}
@Override
public void onPerformSync(Account account, Bundle extras, String
authority, ContentProviderClient provider,
SyncResult syncResult) {
}
}
DriveSyncService.java
public class DriveSyncService extends Service {
private static final Object sSyncAdapterLock = new Object();
private static DriveSyncAdapter sSyncAdapter = null;
@Override
public void onCreate() {
synchronized (sSyncAdapterLock) {
if (sSyncAdapter == null) {
sSyncAdapter = new
DriveSyncAdapter(getApplicationContext(), true);
}
}
}
@Override
public IBinder onBind(Intent intent) {
return sSyncAdapter.getSyncAdapterBinder();
}
}
DummyContentProvider.java
public class DummyContentProvider 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;
}
}
AuthenticatorAsyncTask.java (this task is execute from my main Activity)
public class AuthenticatorAsyncTask extends AsyncTask<Void, Void, Boolean> {
private final Context context;
private final String accountname;
private Account account;
private static final String AUTHORITY = "com.test.testapp";
private static long FOUR_HOURS = 4 * 60 * 60;
protected AuthenticatorAsyncTask(Context context, String accountname) {
this.context = context;
this.accountname = accountname;
AccountManager mgr = AccountManager.get(context);
Account accounts[] = mgr.getAccounts();
for(int i=0; i<accounts.length; i++) {
if(accounts[i].name.equals(accountname)) {
account = accounts[i];
}
}
}
@Override
protected Boolean doInBackground(Void... params) {
if(getAccessToken(context, accountname) == null) {
return false;
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
ContentResolver.setSyncAutomatically(account, AUTHORITY, true);
ContentResolver.addPeriodicSync(account, AUTHORITY, new Bundle(),
FOUR_HOURS);
ContentResolver.requestSync(account, AUTHORITY, new Bundle());
}
private String getAccessToken(Context context, String accountname) {
try {
return GoogleAuthUtil.getToken(context, accountname, "oauth2:"
+ DriveScopes.DRIVE_READONLY);
} catch(UserRecoverableAuthException e) {
context.startActivity(e.getIntent());
} catch (IOException e) {
e.printStackTrace();
} catch (GoogleAuthException e) {
e.printStackTrace();
}
return null;
}
public static void authenticate(Context context, String accountname) {
AuthenticatorAsyncTask task = new AuthenticatorAsyncTask(context,
accountname);
task.execute();
}
}
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android";
package="com.test.testapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_SYNC_STATS" />
<uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
<application
android:allowBackup="false"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:taskAffinity=""
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".DriveSyncService" android:exported="true"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.content.SyncAdapter" />
</intent-filter>
<meta-data
android:name="android.content.SyncAdapter"
android:resource="@xml/syncadapter" />
</service>
<provider android:name=".DummyContentProvider"
android:syncable="true"
android:authorities="com.test.testapp.dummy">
</provider>
</application>
</manifest>
syncadapter.xml :
<?xml version="1.0" encoding="utf-8"?>
<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android";
android:contentAuthority="com.test.testapp"
android:accountType="com.google" />
On Tuesday, December 11, 2012 1:58:38 PM UTC+11, rukiman wrote:
>
> I'm very confused with this. I'm trying to sync some files and folders in
> google drive with Android. I came across a Google IO presentation but there
> was no code attached to it. Using parts of it and what I can google around
> (there is lots of confusing thoughts about AbstractThreadedSyncAdapter on
> the net). i.e needs content provider for it to work others say it doesn't
> etc. I have implemented it by piecing all the information I have worked
> out. My application makes use of Google play services to call
> GoogleAuthUtil.getToken() which displays an activity the first time asking
> the user to confirm permissions to the application. I have a dummy content
> provider with no functions implemented. However my application does not
> appear in the Accounts & Sync android settings and the onPerformSync() is
> not called.
>
> Can anyone point me to a working example of hopefully using Google drive
> to sync OR an example of AbstractThreadedSyncAdapter with a custom
> provider where the sync is working correctly?
>
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