85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
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/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.content.pm;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.os.RemoteException;
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/**
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* Data loader manager takes care of data loaders of different packages. It provides methods to
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* initialize a data loader binder service (binding and creating it), to return a binder of the data
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* loader binder service and to destroy a data loader binder service.
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* @see com.android.server.pm.DataLoaderManagerService
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* @hide
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*/
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public class DataLoaderManager {
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private static final String TAG = "DataLoaderManager";
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private final IDataLoaderManager mService;
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public DataLoaderManager(IDataLoaderManager service) {
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mService = service;
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}
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/**
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* Finds a data loader binder service and binds to it. This requires PackageManager.
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*
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* @param dataLoaderId ID for the new data loader binder service.
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* @param params DataLoaderParamsParcel object that contains data loader params, including
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* its package name, class name, and additional parameters.
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* @param bindDelayMs introduce a delay before actual bind in case we want to avoid busylooping
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* @param listener Callback for the data loader service to report status back to the
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* caller.
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* @return false if 1) target ID collides with a data loader that is already bound to data
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* loader manager; 2) package name is not specified; 3) fails to find data loader package;
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* or 4) fails to bind to the specified data loader service, otherwise return true.
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*/
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public boolean bindToDataLoader(int dataLoaderId, @NonNull DataLoaderParamsParcel params,
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long bindDelayMs, @NonNull IDataLoaderStatusListener listener) {
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try {
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return mService.bindToDataLoader(dataLoaderId, params, bindDelayMs, listener);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Returns a binder interface of the data loader binder service, given its ID.
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*/
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@Nullable
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public IDataLoader getDataLoader(int dataLoaderId) {
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try {
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return mService.getDataLoader(dataLoaderId);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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/**
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* Unbinds from a data loader binder service, specified by its ID.
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* DataLoader will receive destroy notification.
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*/
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@Nullable
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public void unbindFromDataLoader(int dataLoaderId) {
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try {
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mService.unbindFromDataLoader(dataLoaderId);
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} catch (RemoteException e) {
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throw e.rethrowFromSystemServer();
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}
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}
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}
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