public class MediaScanner extends Object implements AutoCloseable
Modifier and Type | Field and Description |
---|---|
static String |
LAST_INTERNAL_SCAN_FINGERPRINT |
static String |
SCANNED_BUILD_PREFS_NAME |
Constructor and Description |
---|
MediaScanner(Context c,
String volumeName) |
Modifier and Type | Method and Description |
---|---|
static void |
clearMediaPathCache(boolean clearMediaPaths,
boolean clearNoMediaPaths) |
void |
close()
Closes this resource, relinquishing any underlying resources.
|
byte[] |
extractAlbumArt(FileDescriptor fd) |
protected void |
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
static boolean |
isNoMediaPath(String path) |
void |
scanDirectories(String[] directories) |
void |
scanMtpFile(String path,
int objectHandle,
int format) |
Uri |
scanSingleFile(String path,
String mimeType) |
public static final String SCANNED_BUILD_PREFS_NAME
public static final String LAST_INTERNAL_SCAN_FINGERPRINT
public void scanDirectories(String[] directories)
public static void clearMediaPathCache(boolean clearMediaPaths, boolean clearNoMediaPaths)
public static boolean isNoMediaPath(String path)
public void scanMtpFile(String path, int objectHandle, int format)
public byte[] extractAlbumArt(FileDescriptor fd)
public void close()
AutoCloseable
try
-with-resources statement.
While this interface method is declared to throw Exception
, implementers are strongly encouraged to
declare concrete implementations of the close
method to
throw more specific exceptions, or to throw no exception at all
if the close operation cannot fail.
Implementers of this interface are also strongly advised
to not have the close
method throw InterruptedException
.
This exception interacts with a thread's interrupted status,
and runtime misbehavior is likely to occur if an InterruptedException
is suppressed.
More generally, if it would cause problems for an
exception to be suppressed, the AutoCloseable.close
method should not throw it.
Note that unlike the close
method of Closeable
, this close
method
is not required to be idempotent. In other words,
calling this close
method more than once may have some
visible side effect, unlike Closeable.close
which is
required to have no effect if called more than once.
However, implementers of this interface are strongly encouraged
to make their close
methods idempotent.
close
in interface AutoCloseable
protected void finalize() throws Throwable
Object
finalize
method to dispose of
system resources or to perform other cleanup.
The general contract of finalize
is that it is invoked
if and when the JavaTM virtual
machine has determined that there is no longer any
means by which this object can be accessed by any thread that has
not yet died, except as a result of an action taken by the
finalization of some other object or class which is ready to be
finalized. The finalize
method may take any action, including
making this object available again to other threads; the usual purpose
of finalize
, however, is to perform cleanup actions before
the object is irrevocably discarded. For example, the finalize method
for an object that represents an input/output connection might perform
explicit I/O transactions to break the connection before the object is
permanently discarded.
The finalize
method of class Object
performs no
special action; it simply returns normally. Subclasses of
Object
may override this definition.
The Java programming language does not guarantee which thread will
invoke the finalize
method for any given object. It is
guaranteed, however, that the thread that invokes finalize will not
be holding any user-visible synchronization locks when finalize is
invoked. If an uncaught exception is thrown by the finalize method,
the exception is ignored and finalization of that object terminates.
After the finalize
method has been invoked for an object, no
further action is taken until the Java virtual machine has again
determined that there is no longer any means by which this object can
be accessed by any thread that has not yet died, including possible
actions by other objects or classes which are ready to be finalized,
at which point the object may be discarded.
The finalize
method is never invoked more than once by a Java
virtual machine for any given object.
Any exception thrown by the finalize
method causes
the finalization of this object to be halted, but is otherwise
ignored.