5
Ich versuche, einen Sync-Adapter mit "StubProvider" und "StubAuthenticator" zu schreiben, ich folgte den offiziellen Richtlinien, mein Code läuft ohne Fehler aber "onPerformSync()" wird nicht angerufen, ich habe alles versucht, aber keine Verwendung.ContentResolver.requestSync in Sync-Adapter funktioniert nicht in Android
Mein vollständige Projekt kann von https://www.dropbox.com/s/48bgj3wweehaieu/MyApplication.zip?dl=0
hier heruntergeladen werden werden die Klassen Ich verwende:
Klasse MainActivity
public class MainActivity extends FragmentActivity implements View.OnClickListener {
// Constants
// The authority for the sync adapter's content provider
public static final String AUTHORITY = "com.syncadaptertest.StubProvider";
// An account type, in the form of a domain name
public static final String ACCOUNT_TYPE = "com.syncadaptertest";
// The account name
public static final String ACCOUNT = "dummyaccount";
// Instance fields
Account mAccount;
private ImageButton mRefreshBtn = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRefreshBtn = (ImageButton) findViewById(R.id.refreshBtn);
mRefreshBtn.setOnClickListener(this);
// Create the dummy account
mAccount = CreateSyncAccount(this);
}
/**
* Create a new dummy account for the sync adapter
*
* @param context The application context
*/
public static Account CreateSyncAccount(Context context) {
// Create the account type and default account
Account newAccount = new Account(ACCOUNT, ACCOUNT_TYPE);
// Get an instance of the Android account manager
AccountManager accountManager = (AccountManager) context.getSystemService(ACCOUNT_SERVICE);
/*
* Add the account and account type, no password or user data
* If successful, return the Account object, otherwise report an error.
*/
if (accountManager.addAccountExplicitly(newAccount, null, null)) {
/*
* If you don't set android:syncable="true" in
* in your <provider> element in the manifest,
* then call context.setIsSyncable(account, AUTHORITY, 1)
* here.
*/
} else {
/*
* The account exists or some other error occurred. Log this, report it,
* or handle it internally.
*/
}
return newAccount;
}
@Override
public void onClick(View v){
onRefreshButtonClick(v);
}
/**
* Respond to a button click by calling requestSync(). This is an
* asynchronous operation.
*
* This method is attached to the refresh button in the layout
* XML file
*
* @param v The View associated with the method call,
* in this case a Button
*/
public void onRefreshButtonClick(View v) {
// Pass the settings flags by inserting them in a bundle
Bundle settingsBundle = new Bundle();
settingsBundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
settingsBundle.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
/*
* Request the sync for the default account, authority, and
* manual sync settings
*/
ContentResolver.setIsSyncable(mAccount, AUTHORITY, 1);
ContentResolver.requestSync(mAccount, AUTHORITY, settingsBundle);
if(ContentResolver.isSyncActive(mAccount, AUTHORITY))
{
Log.d("testing1","testttt");
}
if(ContentResolver.isSyncPending(mAccount, AUTHORITY))
{
Log.d("testing2","testttt2");
}
List<SyncInfo> myList = ContentResolver.getCurrentSyncs();
}
}
Klasse für Stub Authenticator
public class Authenticator extends AbstractAccountAuthenticator {
// Simple constructor
public Authenticator(Context context) {
super(context);
}
// Editing properties is not supported
@Override
public Bundle editProperties(
AccountAuthenticatorResponse r, String s) {
throw new UnsupportedOperationException();
}
// Don't add additional accounts
@Override
public Bundle addAccount(
AccountAuthenticatorResponse r,
String s,
String s2,
String[] strings,
Bundle bundle) throws NetworkErrorException {
return null;
}
// Ignore attempts to confirm credentials
@Override
public Bundle confirmCredentials(
AccountAuthenticatorResponse r,
Account account,
Bundle bundle) throws NetworkErrorException {
return null;
}
// Getting an authentication token is not supported
@Override
public Bundle getAuthToken(
AccountAuthenticatorResponse r,
Account account,
String s,
Bundle bundle) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
// Getting a label for the auth token is not supported
@Override
public String getAuthTokenLabel(String s) {
throw new UnsupportedOperationException();
}
// Updating user credentials is not supported
@Override
public Bundle updateCredentials(
AccountAuthenticatorResponse r,
Account account,
String s, Bundle bundle) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
// Checking features for the account is not supported
@Override
public Bundle hasFeatures(
AccountAuthenticatorResponse r,
Account account, String[] strings) throws NetworkErrorException {
throw new UnsupportedOperationException();
}
}
Klasse AuthenticatorService
public class AuthenticatorService extends Service {
// Instance field that stores the authenticator object
private Authenticator mAuthenticator;
@Override
public void onCreate() {
// Create a new authenticator object
mAuthenticator = new Authenticator(this);
}
/*
* When the system binds to this Service to make the RPC call
* return the authenticator's IBinder.
*/
@Override
public IBinder onBind(Intent intent) {
return mAuthenticator.getIBinder();
}
}
Klasse SyncService
public class SyncService extends Service {
// Storage for an instance of the sync adapter
private static SyncAdapter sSyncAdapter = null;
// Object to use as a thread-safe lock
private static final Object sSyncAdapterLock = new Object();
/*
* Instantiate the sync adapter object.
*/
@Override
public void onCreate() {
/*
* Create the sync adapter as a singleton.
* Set the sync adapter as syncable
* Disallow parallel syncs
*/
synchronized (sSyncAdapterLock) {
if (sSyncAdapter == null) {
sSyncAdapter = new SyncAdapter(getApplicationContext(), true);
}
}
}
/**
* Return an object that allows the system to invoke
* the sync adapter.
*
*/
@Override
public IBinder onBind(Intent intent) {
/*
* Get the object that allows external processes
* to call onPerformSync(). The object is created
* in the base class code when the SyncAdapter
* constructors call super()
*/
return sSyncAdapter.getSyncAdapterBinder();
}
}
Klasse StubProvider
public class StubProvider extends ContentProvider {
/*
* Always return true, indicating that the
* provider loaded correctly.
*/
@Override
public boolean onCreate() {
return true;
}
/*
* Return no type for MIME type
*/
@Override
public String getType(Uri uri) {
return null;
}
/*
* query() always returns no results
*
*/
@Override
public Cursor query(
Uri uri,
String[] projection,
String selection,
String[] selectionArgs,
String sortOrder) {
return null;
}
/*
* insert() always returns null (no URI)
*/
@Override
public Uri insert(Uri uri, ContentValues values) {
return null;
}
/*
* delete() always returns "no rows affected" (0)
*/
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
return 0;
}
/*
* update() always returns "no rows affected" (0)
*/
public int update(
Uri uri,
ContentValues values,
String selection,
String[] selectionArgs) {
return 0;
}
}
Klasse SyncAdapter
public class SyncAdapter extends AbstractThreadedSyncAdapter {
private final AccountManager mAccountManager;
public SyncAdapter(Context context, boolean autoInitialize) {
super(context, autoInitialize);
mAccountManager = AccountManager.get(context);
}
@Override
public void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider, SyncResult syncResult) {
Log.d("udinic", "onPerformSync for account[" + account.name + "]");
try {
// TODO Updating local tv shows
} catch (Exception e) {
e.printStackTrace();
}
}
}
Sie liefern eine Menge Code, aber was genau funktioniert nicht? Beschreiben Sie, was Sie erreichen möchten, was das erwartete Ergebnis ist und was das tatsächliche Ergebnis ist. –
Wenn 'onPerformSync' aufgerufen wird, was ist also Ihr Problem? – pskink
dumme mich, ich habe gerade bearbeitet .... 'onPerformSync' wird nicht aufgerufen. – Kazmi