net.gini.android.vision.util

Class UriHelper

java.lang.Object

net.gini.android.vision.util.UriHelper

public final class UriHelper
extends java.lang.Object

Helper methods for android.net.Uri.

Method Summary

Modifier and Type	Method and Description
static byte[]	getBytesFromUri(Uri uri, Context context) Reads the contents of the resource pointed to by the Uri into a byte array.
static java.lang.String	getFileExtension(Uri uri, Context context)
static java.lang.String	getFilenameFromUri(Uri uri, Context context) Retrieves the filename of a Uri, if available.
static int	getFileSizeFromUri(Uri uri, Context context) Retrieves the file size of a Uri, if available.
static java.lang.String	getMimeType(Uri uri, Context context)
static java.lang.String	getMimeTypeFromUrl(java.lang.String url)
static boolean	hasMimeType(Uri uri, Context context, java.lang.String mimeType)
static boolean	isUriInputStreamAvailable(Uri uri, Context context) Test whether an InputStream can be opened for the Uri.

Methods inherited from class java.lang.Object

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

Method Detail

getBytesFromUri

public static byte[] getBytesFromUri(Uri uri,
                                     Context context)
                              throws java.io.IOException

Reads the contents of the resource pointed to by the Uri into a byte array.

Parameters:

uri - a Uri pointing to a file

context - Android context

Returns:

contents of the Uri

Throws:

java.io.IOException - if there is an issue with the input stream from the Uri

java.lang.IllegalStateException - if null input stream was returned by the Context's Content Resolver

isUriInputStreamAvailable

public static boolean isUriInputStreamAvailable(Uri uri,
                                                Context context)

Test whether an InputStream can be opened for the Uri.

Parameters:

uri - a Uri pointing to a file

context - Android context

Returns:

true if an InputStream can be opened for the Uri

getFilenameFromUri

public static java.lang.String getFilenameFromUri(Uri uri,
                                                  Context context)

Retrieves the filename of a Uri, if available.

Parameters:

uri - a Uri pointing to a file

context - Android context

Returns:

the filename

Throws:

java.lang.IllegalStateException - if the Uri is not pointing to a file or the filename was not available

getFileSizeFromUri

public static int getFileSizeFromUri(Uri uri,
                                     Context context)

Retrieves the file size of a Uri, if available.

Parameters:

uri - a Uri pointing to a file

context - Android context

Returns:

the filename

Throws:

java.lang.IllegalStateException - if the Uri is not pointing to a file or the filesize was not available

getMimeType

public static java.lang.String getMimeType(Uri uri,
                                           Context context)

getMimeTypeFromUrl

public static java.lang.String getMimeTypeFromUrl(java.lang.String url)

getFileExtension

public static java.lang.String getFileExtension(Uri uri,
                                                Context context)

hasMimeType

public static boolean hasMimeType(Uri uri,
                                  Context context,
                                  java.lang.String mimeType)