Java ContentResolver.addStatusChangeListener方法代碼示例

import android.content.ContentResolver; //導入方法依賴的package包/類
@Override
protected void onResume() {
    super.onResume();

    // Perform one-time bootstrap setup, if needed
    DataBootstrapService.startDataBootstrapIfNecessary(this);

    // Check to ensure a Google Account is active for the app. Placing the check here ensures
    // it is run again in the case where a Google Account wasn't present on the device and a
    // picker had to be started.
    if (!AccountUtils.enforceActiveGoogleAccount(this, SELECT_GOOGLE_ACCOUNT_RESULT)) {
        LOGD(TAG, "EnforceActiveGoogleAccount returned false");
        return;
    }

    // Watch for sync state changes
    mSyncStatusObserver.onStatusChanged(0);
    final int mask = ContentResolver.SYNC_OBSERVER_TYPE_PENDING |
            ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE;
    mSyncObserverHandle = ContentResolver.addStatusChangeListener(mask, mSyncStatusObserver);

    startLoginProcess();
}
 

import android.content.ContentResolver; //導入方法依賴的package包/類
@Override
public void setListening(boolean listening) {
    if (listening && mEnabled) {
        mSyncHandle = ContentResolver.addStatusChangeListener(
            ContentResolver.SYNC_OBSERVER_TYPE_SETTINGS, mSyncObserver);
        getSyncState();
        if (DEBUG) log(getKey() + ": sync status listener registered");
    } else if (mSyncHandle != null){
        ContentResolver.removeStatusChangeListener(mSyncHandle);
        mSyncHandle = null;
        if (DEBUG) log(getKey() + ": sync status listener unregistered");
    }
}
 

import android.content.ContentResolver; //導入方法依賴的package包/類
/**
 * Adds a Google account to the device.
 *
 * <p>TODO(adorokhine): Support adding accounts of other types with an optional 'type' kwarg.
 *
 * <p>TODO(adorokhine): Allow users to choose whether to enable/disable sync with a kwarg.
 *
 * @param username Username of the account to add (including @gmail.com).
 * @param password Password of the account to add.
 */
@Rpc(
    description = "Add a Google (GMail) account to the device, with account data sync disabled."
)
public void addAccount(String username, String password)
        throws AccountSnippetException, AccountsException, IOException {
    // Check for existing account. If we try to re-add an existing account, Android throws an
    // exception that says "Account does not exist or not visible. Maybe change pwd?" which is
    // a little hard to understand.
    if (listAccounts().contains(username)) {
        throw new AccountSnippetException(
                "Account " + username + " already exists on the device");
    }
    Bundle addAccountOptions = new Bundle();
    addAccountOptions.putString("username", username);
    addAccountOptions.putString("password", password);
    AccountManagerFuture<Bundle> future =
            mAccountManager.addAccount(
                    GOOGLE_ACCOUNT_TYPE,
                    AUTH_TOKEN_TYPE,
                    null /* requiredFeatures */,
                    addAccountOptions,
                    null /* activity */,
                    null /* authCallback */,
                    null /* handler */);
    Bundle result = future.getResult();
    if (result.containsKey(AccountManager.KEY_ERROR_CODE)) {
        throw new AccountSnippetException(
                String.format(
                        Locale.US,
                        "Failed to add account due to code %d: %s",
                        result.getInt(AccountManager.KEY_ERROR_CODE),
                        result.getString(AccountManager.KEY_ERROR_MESSAGE)));
    }

    // Disable sync to avoid test flakiness as accounts fetch additional data.
    // It takes a while for all sync adapters to be populated, so register for broadcasts when
    // sync is starting and disable them there.
    // NOTE: this listener is NOT unregistered because several sync requests for the new account
    // will come in over time.
    Account account = new Account(username, GOOGLE_ACCOUNT_TYPE);
    Object handle =
            ContentResolver.addStatusChangeListener(
                    ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE
                            | ContentResolver.SYNC_OBSERVER_TYPE_PENDING,
                    which -> {
                        for (SyncAdapterType adapter : ContentResolver.getSyncAdapterTypes()) {
                            // Ignore non-Google account types.
                            if (!adapter.accountType.equals(GOOGLE_ACCOUNT_TYPE)) {
                                continue;
                            }
                            // If a content provider is not whitelisted, then disable it.
                            // Because startSync and stopSync synchronously update the whitelist
                            // and sync settings, writelock both the whitelist check and the
                            // call to sync together.
                            mLock.writeLock().lock();
                            try {
                                if (!isAdapterWhitelisted(username, adapter.authority)) {
                                    updateSync(account, adapter.authority, false /* sync */);
                                }
                            } finally {
                                mLock.writeLock().unlock();
                            }
                        }
                    });
    mSyncStatusObserverHandles.add(handle);
}