Add methods to query the private storage. (845740e6) · Commits · e / os / android_frameworks_base

packages/SettingsLib/src/com/android/settingslib/deviceinfo/PrivateStorageInfo.java

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		/*
		* Copyright (C) 2016 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.android.settingslib.deviceinfo;

		import android.os.storage.StorageManager;
		import android.os.storage.VolumeInfo;
		import android.util.Log;

		import java.io.File;
		import java.util.Objects;

		/**
		* PrivateStorageInfo provides information about the total and free storage on the device.
		*/
		public class PrivateStorageInfo {
		private static final String TAG = "PrivateStorageInfo";
		public final long freeBytes;
		public final long totalBytes;

		private PrivateStorageInfo(long freeBytes, long totalBytes) {
		this.freeBytes = freeBytes;
		this.totalBytes = totalBytes;
		}

		public static PrivateStorageInfo getPrivateStorageInfo(StorageVolumeProvider sm) {
		long totalInternalStorage = sm.getPrimaryStorageSize();
		long privateFreeBytes = 0;
		long privateTotalBytes = 0;
		for (VolumeInfo info : sm.getVolumes()) {
		final File path = info.getPath();
		if (info.getType() != VolumeInfo.TYPE_PRIVATE \|\| path == null) {
		continue;
		}
		privateTotalBytes += getTotalSize(info, totalInternalStorage);
		privateFreeBytes += path.getFreeSpace();
		}
		return new PrivateStorageInfo(privateFreeBytes, privateTotalBytes);
		}

		/**
		* Returns the total size in bytes for a given volume info.
		* @param info Info of the volume to check.
		* @param totalInternalStorage Total number of bytes in the internal storage to use if the
		* volume is the internal disk.
		*/
		public static long getTotalSize(VolumeInfo info, long totalInternalStorage) {
		// Device could have more than one primary storage, which could be located in the
		// internal flash (UUID_PRIVATE_INTERNAL) or in an external disk.
		// If it's internal, try to get its total size from StorageManager first
		// (totalInternalStorage), because that size is more precise because it accounts for
		// the system partition.
		if (info.getType() == VolumeInfo.TYPE_PRIVATE
		&& Objects.equals(info.getFsUuid(), StorageManager.UUID_PRIVATE_INTERNAL)
		&& totalInternalStorage > 0) {
		return totalInternalStorage;
		} else {
		final File path = info.getPath();
		if (path == null) {
		// Should not happen, caller should have checked.
		Log.e(TAG, "info's path is null on getTotalSize(): " + info);
		return 0;
		}
		return path.getTotalSpace();
		}
		}

		}

packages/SettingsLib/src/com/android/settingslib/deviceinfo/StorageManagerVolumeProvider.java

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		/*
		* Copyright (C) 2016 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.android.settingslib.deviceinfo;

		import android.os.storage.StorageManager;
		import android.os.storage.VolumeInfo;

		import java.util.List;

		/**
		* StorageManagerVolumeProvider is a thin wrapper around the StorageManager to provide insight into
		* the storage volumes on a device.
		*/
		public class StorageManagerVolumeProvider implements StorageVolumeProvider {
		private StorageManager mStorageManager;

		public StorageManagerVolumeProvider(StorageManager sm) {
		mStorageManager = sm;
		}

		@Override
		public long getPrimaryStorageSize() {
		return mStorageManager.getPrimaryStorageSize();
		}

		@Override
		public List<VolumeInfo> getVolumes() {
		return mStorageManager.getVolumes();
		}
		}

packages/SettingsLib/src/com/android/settingslib/deviceinfo/StorageVolumeProvider.java

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		/*
		* Copyright (C) 2016 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.android.settingslib.deviceinfo;

		import android.os.storage.VolumeInfo;

		import java.util.List;

		/**
		* StorageVolumeProvider provides access to the storage volumes on a device for free space
		* calculations.
		*/
		public interface StorageVolumeProvider {
		/**
		* Returns the number of bytes of total storage on the primary storage.
		*/
		long getPrimaryStorageSize();

		/**
		* Returns a list of VolumeInfos for the device.
		*/
		List<VolumeInfo> getVolumes();
		}