android.os.storage.StorageManager#UUID_DEFAULT源码实例Demo

/**
 * API 26 android O
 * 获取总共容量大小，包括系统大小
 */
@SuppressLint("NewApi")
public static long getTotalSize(Context context, String fsUuid) {
    try {
        UUID id;
        if (fsUuid == null) {
            id = StorageManager.UUID_DEFAULT;
        } else {
            id = UUID.fromString(fsUuid);
        }
        StorageStatsManager stats = context.getSystemService(StorageStatsManager.class);
        return stats.getTotalBytes(id);
    } catch (NoSuchFieldError | NoClassDefFoundError | NullPointerException | IOException e) {
        e.printStackTrace();
        return -1;
    }
}
 

/**
 * API 26 android O
 * 获取总共容量大小，包括系统大小
 */
@RequiresApi(api = 26)
public long getTotalSize(String fsUuid) {
    try {
        UUID id;
        if (fsUuid == null) {
            id = StorageManager.UUID_DEFAULT;
        } else {
            id = UUID.fromString(fsUuid);
        }
        StorageStatsManager stats = (StorageStatsManager) getSystemService(Context.STORAGE_STATS_SERVICE);
        return stats.getTotalBytes(id);
    } catch (NoSuchFieldError | NoClassDefFoundError | NullPointerException | IOException e) {
        e.printStackTrace();
        ToastUtils.show(this, "获取存储大小失败");
        return -1;
    }
}
 

/**
 * API 26 android O
 * 获取总共容量大小，包括系统大小
 */
@RequiresApi(Build.VERSION_CODES.O)
public static long getTotalSize(Context context, String fsUuid) {
    try {
        UUID id;
        if (fsUuid == null) {
            id = StorageManager.UUID_DEFAULT;
        } else {
            id = UUID.fromString(fsUuid);
        }
        StorageStatsManager stats = context.getSystemService(StorageStatsManager.class);
        return stats.getTotalBytes(id);
    } catch (NoSuchFieldError | NoClassDefFoundError | NullPointerException | IOException e) {
        e.printStackTrace();
        return -1;
    }
}
 

/**
 * 获取存储块id
 *
 * @param fsUuid
 * @return
 */

private UUID getUuid(String fsUuid) {
    UUID id;
    if (fsUuid == null) {
        try {
            id = StorageManager.UUID_DEFAULT;
        } catch (NoSuchFieldError e) {
            id = UUID.fromString("41217664-9172-527a-b3d5-edabb50a7d69");
        }
    } else {
        id = UUID.fromString(fsUuid);
    }
    return id;
}
 

/**
 * 获取应用的大小
 */
@RequiresApi(api = Build.VERSION_CODES.O)
private static void getAppSizeAboveO(Context context, @NonNull OnGetSizeListener listener) {
    StorageStatsManager storageStatsManager = (StorageStatsManager) context
            .getSystemService(Context.STORAGE_STATS_SERVICE);
    StorageManager storageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
    // 获取所有应用的StorageVolume列表
    List<StorageVolume> storageVolumes = storageManager.getStorageVolumes();
    for (StorageVolume item : storageVolumes) {
        String uuidStr = item.getUuid();
        UUID uuid;
        if (uuidStr == null) {
            uuid = StorageManager.UUID_DEFAULT;
        } else {
            uuid = UUID.fromString(uuidStr);
        }
        int uid = getUid(context, context.getPackageName());
        // 通过包名获取uid
        StorageStats storageStats;
        try {
            storageStats = storageStatsManager.queryStatsForUid(uuid, uid);
            AppSizeInfo ctAppSizeInfo = new AppSizeInfo();
            ctAppSizeInfo.cacheSize = storageStats.getCacheBytes();
            ctAppSizeInfo.dataSize = storageStats.getDataBytes();
            ctAppSizeInfo.codeSize = storageStats.getAppBytes();
            listener.onGetSize(ctAppSizeInfo);
        } catch (IOException e) {
            listener.onError(e);
        }
    }
}