Java 类android.content.SyncStatusObserver 实例源码

public SyncStatusManager(Context context, String authority) {
    mContext = context;
    mAuthority = authority;
    syncObserver = new SyncStatusObserver() {
        @Override
        public void onStatusChanged(final int which) {
            AccountManager accountManager = AccountManager.get(mContext);
            if (accountManager != null) {
                Account[] accounts = accountManager.getAccountsByType(AccountGeneral.ACCOUNT_TYPE);
                if (accounts.length > 0) {
                    Account account = accounts[0];


                    int state = -1;
                    if (which == ContentResolver.SYNC_OBSERVER_TYPE_PENDING) {
                        // 'Pending' state changed.
                        if (ContentResolver.isSyncPending(account, mAuthority)) {
                            // There is now a pending sync.
                            state = STATE_NOW_PENDING;
                        } else {
                            // There is no longer a pending sync.
                            state = STATE_NO_LONGER_PENDING;
                        }
                    } else if (which == ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE) {
                        // 'Active' state changed.
                        if (ContentResolver.isSyncActive(account, mAuthority)) {
                            // There is now an active sync.
                            state = STATE_NOW_SYNCING;
                        } else {
                            // There is no longer an active sync.
                            state = STATE_NO_LONGER_SYNCING;
                        }
                    }

                    Log.d(MainActivity.TAG, "Notifying sync status: " + state);
                    for (OnSyncStatusChangedListener listener : listeners) {
                        listener.onStatusChanged(state, mAuthority);
                    }
                }
            }
        }
    };
}

@Override
public Object addStatusChangeListener(int mask, SyncStatusObserver callback) {
    return ContentResolver.addStatusChangeListener(mask, callback);
}

@Override
public Object addStatusChangeListener(int mask, SyncStatusObserver callback) {
    return ContentResolver.addStatusChangeListener(mask, callback);
}

@Override
public Object addStatusChangeListener(int mask, SyncStatusObserver callback) {
    return ContentResolver.addStatusChangeListener(mask, callback);
}

Object addStatusChangeListener(int mask, SyncStatusObserver callback);

Object addStatusChangeListener(int mask, SyncStatusObserver callback);

Object addStatusChangeListener(int mask, SyncStatusObserver callback);