| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.android.connecteddevice.service; |
| |
| import static com.google.android.connecteddevice.util.SafeLog.loge; |
| |
| import android.app.Service; |
| import android.content.ComponentName; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.os.Bundle; |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.annotation.VisibleForTesting; |
| |
| /** Service with convenience methods for using meta-data configuration. */ |
| public abstract class MetaDataService extends Service { |
| |
| private static final String TAG = "MetaDataService"; |
| |
| @VisibleForTesting |
| Bundle bundle; |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| ComponentName service = new ComponentName(this, this.getClass()); |
| try { |
| bundle = getPackageManager().getServiceInfo(service, PackageManager.GET_META_DATA).metaData; |
| } catch (NameNotFoundException e) { |
| throw new IllegalStateException("Unable to read meta-data for service.", e); |
| } |
| } |
| |
| /** |
| * Return a string from the service's meta-data, or default value if no meta-data matches |
| * the provided name. |
| */ |
| @Nullable |
| protected final String getMetaString(@NonNull String name, @Nullable String defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return getResources().getString(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a boolean from the service's meta-data, or default value if no meta-data matches |
| * the provided name. |
| */ |
| protected final boolean getMetaBoolean(@NonNull String name, boolean defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return getResources().getBoolean(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return an integer from the service's meta-data, or default value if no meta-data matches |
| * the provided name. |
| */ |
| protected final int getMetaInt(@NonNull String name, int defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return getResources().getInteger(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a float from the service's meta-data, or default value if no meta-data matches |
| * the provided name. |
| */ |
| protected final float getMetaFloat(@NonNull String name, float defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return getResources().getFloat(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a string array from the service's meta-data, or default value if no meta-data matches |
| * the provided name. |
| */ |
| @Nullable |
| protected final String[] getMetaStringArray( |
| @NonNull String name, |
| @Nullable String[] defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return getResources().getStringArray(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a resource id from the service's meta-data, or default value if no meta-data matches the |
| * provided name. |
| */ |
| protected final int getMetaResourceId(@NonNull String name, int defaultValue) { |
| if (!bundle.containsKey(name)) { |
| return defaultValue; |
| } |
| return bundle.getInt(name); |
| } |
| |
| /** |
| * Return a string from the service's meta-data. Throws an {@link IllegalArgumentException} if |
| * no meta-data matches the provided name. |
| */ |
| @NonNull |
| protected final String requireMetaString(@NonNull String name) { |
| requireName(name); |
| return getResources().getString(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a boolean from the service's meta-data. Throws an {@link IllegalArgumentException} if |
| * no meta-data matches the provided name. |
| */ |
| protected final boolean requireMetaBoolean(@NonNull String name) { |
| requireName(name); |
| return getResources().getBoolean(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return an integer from the service's meta-data. Throws an {@link IllegalArgumentException} if |
| * no meta-data matches the provided name. |
| */ |
| protected final int requireMetaInt(@NonNull String name) { |
| requireName(name); |
| return getResources().getInteger(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a float from the service's meta-data. Throws an {@link IllegalArgumentException} if |
| * no meta-data matches the provided name. |
| */ |
| protected final float requireMetaFloat(@NonNull String name) { |
| requireName(name); |
| return getResources().getFloat(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a string array from the service's meta-data. Throws an {@link IllegalArgumentException} |
| * if no meta-data matches the provided name. |
| */ |
| @NonNull |
| protected final String[] requireMetaStringArray(@NonNull String name) { |
| requireName(name); |
| return getResources().getStringArray(bundle.getInt(name)); |
| } |
| |
| /** |
| * Return a resource id from the service's meta-data. Throws an {@link IllegalArgumentException} |
| * if no meta-data matches the provided name. |
| */ |
| protected final int requireMetaResourceId(@NonNull String name) { |
| requireName(name); |
| return bundle.getInt(name); |
| } |
| |
| private void requireName(@NonNull String name) { |
| if (bundle.containsKey(name)) { |
| return; |
| } |
| loge(TAG, "Missing required meta-data value " + name + ". Cannot instantiate service."); |
| throw new IllegalArgumentException("Missing required meta-data value " + name + "."); |
| } |
| } |