IT. Expert System.

public class StorageManager
extends Object

• Constructor Summary

  Constructors

  Constructor and Description
  StorageManager(Looper tgtLooper) Constructs a StorageManager object through which an application can can communicate with the systems mount service.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	disableUsbMassStorage() Disables USB Mass Storage (UMS) on the device.
  void	enableUsbMassStorage() Enables USB Mass Storage (UMS) on the device.
  static StorageManager	from(Context context)
  String	getMountedObbPath(String rawPath) Check the mounted path of an Opaque Binary Blob (OBB) file.
  StorageVolume	getPrimaryVolume()
  static StorageVolume	getPrimaryVolume(StorageVolume[] volumes)
  StorageVolume[]	getVolumeList() Returns list of all mountable volumes.
  String[]	getVolumePaths() Returns list of paths for all mountable volumes.
  String	getVolumeState(String mountPoint) Gets the state of a volume via its mountpoint.
  boolean	isObbMounted(String rawPath) Check whether an Opaque Binary Blob (OBB) is mounted or not.
  boolean	isUsbMassStorageConnected() Query if a USB Mass Storage (UMS) host is connected.
  boolean	isUsbMassStorageEnabled() Query if a USB Mass Storage (UMS) is enabled on the device.
  boolean	mountObb(String rawPath, String key, OnObbStateChangeListener listener) Mount an Opaque Binary Blob (OBB) file.
  void	registerListener(StorageEventListener listener) Registers a StorageEventListener.
  boolean	unmountObb(String rawPath, boolean force, OnObbStateChangeListener listener) Unmount an Opaque Binary Blob (OBB) file asynchronously.
  void	unregisterListener(StorageEventListener listener) Unregisters a StorageEventListener.

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Constructor Detail

  • StorageManager

    public StorageManager(Looper tgtLooper)
                   throws RemoteException

    Constructs a StorageManager object through which an application can can communicate with the systems mount service.

    Parameters:

    tgtLooper - The Looper which events will be received on.

    Applications can get instance of this class by calling Context.getSystemService(java.lang.String) with an argument of Context.STORAGE_SERVICE.

    Throws:

    RemoteException

• Method Detail

  • from

    public static StorageManager from(Context context)

  • registerListener

    public void registerListener(StorageEventListener listener)

    Registers a StorageEventListener.

    Parameters:

    listener - A StorageEventListener object.

  • unregisterListener

    public void unregisterListener(StorageEventListener listener)

    Unregisters a StorageEventListener.

    Parameters:

    listener - A StorageEventListener object.

  • enableUsbMassStorage

    public void enableUsbMassStorage()

    Enables USB Mass Storage (UMS) on the device.

  • disableUsbMassStorage

    public void disableUsbMassStorage()

    Disables USB Mass Storage (UMS) on the device.

  • isUsbMassStorageConnected

    public boolean isUsbMassStorageConnected()

    Query if a USB Mass Storage (UMS) host is connected.

    Returns:

    true if UMS host is connected.

  • isUsbMassStorageEnabled

    public boolean isUsbMassStorageEnabled()

    Query if a USB Mass Storage (UMS) is enabled on the device.

    Returns:

    true if UMS host is enabled.

  • mountObb

    public boolean mountObb(String rawPath,
                   String key,
                   OnObbStateChangeListener listener)

    Mount an Opaque Binary Blob (OBB) file. If a key is specified, it is supplied to the mounting process to be used in any encryption used in the OBB.

    The OBB will remain mounted for as long as the StorageManager reference is held by the application. As soon as this reference is lost, the OBBs in use will be unmounted. The OnObbStateChangeListener registered with this call will receive the success or failure of this operation.

    Note: you can only mount OBB files for which the OBB tag on the file matches a package ID that is owned by the calling program's UID. That is, shared UID applications can attempt to mount any other application's OBB that shares its UID.

    Parameters:

    rawPath - the path to the OBB file

    key - secret used to encrypt the OBB; may be null if no encryption was used on the OBB.

    listener - will receive the success or failure of the operation

    Returns:

    whether the mount call was successfully queued or not

  • unmountObb

    public boolean unmountObb(String rawPath,
                     boolean force,
                     OnObbStateChangeListener listener)

    Unmount an Opaque Binary Blob (OBB) file asynchronously. If the force flag is true, it will kill any application needed to unmount the given OBB (even the calling application).

    The OnObbStateChangeListener registered with this call will receive the success or failure of this operation.

    Note: you can only mount OBB files for which the OBB tag on the file matches a package ID that is owned by the calling program's UID. That is, shared UID applications can obtain access to any other application's OBB that shares its UID.

    Parameters:

    rawPath - path to the OBB file

    force - whether to kill any programs using this in order to unmount it

    listener - will receive the success or failure of the operation

    Returns:

    whether the unmount call was successfully queued or not

  • isObbMounted

    public boolean isObbMounted(String rawPath)

    Check whether an Opaque Binary Blob (OBB) is mounted or not.

    Parameters:

    rawPath - path to OBB image

    Returns:

    true if OBB is mounted; false if not mounted or on error

  • getMountedObbPath

    public String getMountedObbPath(String rawPath)

    Check the mounted path of an Opaque Binary Blob (OBB) file. This will give you the path to where you can obtain access to the internals of the OBB.

    Parameters:

    rawPath - path to OBB image

    Returns:

    absolute path to mounted OBB image data or null if not mounted or exception encountered trying to read status

  • getVolumeState

    public String getVolumeState(String mountPoint)

    Gets the state of a volume via its mountpoint.

  • getVolumeList

    public StorageVolume[] getVolumeList()

    Returns list of all mountable volumes.

  • getVolumePaths

    public String[] getVolumePaths()

    Returns list of paths for all mountable volumes.

  • getPrimaryVolume

    public StorageVolume getPrimaryVolume()

  • getPrimaryVolume

    public static StorageVolume getPrimaryVolume(StorageVolume[] volumes)