Archived:How to fetch media files using Symbian C++
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There are many ways to fetch a media file. Here are three of them.
Contents |
1.Using MgFetch::RunL
Headers Required:
#include <mgfetch.h>Libraries:
LIBRARY MgFetch.lib
LIBRARY bafl.lib // for CDesCArrayFlat
Capability required:
CAPABILITY ReadUserData
MgFetch::RunL will fetch media files in C:\Data and E:\Data paths inherently.There is no need to mention the path anywhere.
We can query for the media types given in mediafiletypes.hrh
void BrowseUsingMGFetchL(TMediaFileType aMediaType)
{
// Create array of descriptors for the selected files
CDesCArrayFlat* fileArray = new (ELeave) CDesCArrayFlat(5);
CleanupStack::PushL(fileArray);
// Open the dialog.
TBool ret = MGFetch::RunL(
*fileArray, // When dialog is closed, fileArray contains selected files
aMediaType, // Displays only media files of type aMediaType
ETrue, // single or multiple file selection
NULL // Pointer to class implementing MMGFetchVerifier;
// when user has selected file(s),
// MMGFetchVerifier::VerifySelectionL is called.
);
// "ret" is true, if user has selected file(s)
if( ret )
{
// Open the first selected file into default application
}
CleanupStack::PopAndDestroy(); // fileArray
}
Example Project: File:MgFetch.zip
2.Using CAknFileSelectionDialog::RunDlgLD
Headers Required:
#include <caknfileselectiondialog.h>
#include <pathinfo.h>
Library Needed:
LIBRARY CommonDialogs.lib // for CAknFileSelectionDialog
LIBRARY PlatformEnv.lib // for pathinfo
CAknFileSelectionDialog::RunDlgLD launches file selection dialogue having the media files in the specified folder. Pathinfo class gives the system paths for media files.
void BrowseUsingAknSelectionDlgL(const TFileName& aPath)
{
TFileName filename;
// Create default filename. (contains only the folder,
// e.g. C:\Data\Images\) This is used as a starting folder for browsing image files.
filename.Append(PathInfo::PhoneMemoryRootPath()); //Use MemoryCardRootPath() for MMC
filename.Append(aPath);
_LIT(KDialogTitle, "Browse files");
TBool ret = CAknFileSelectionDialog::RunDlgLD(
filename, // on return, contains the selected file's name
PathInfo::PhoneMemoryRootPath(), // default root path for browsing
KDialogTitle, // Dialog's title
NULL // Pointer to class implementing
// MAknFileSelectionObserver.
);
// "ret" is true, if user has selected a file
if( ret )
{
// Open the selected file into default application
}
}
Example Project: File:FileFetcher.zip
3.Using native Media Gallery application's UID
The following code launches the native media gallarey application and by changing the KMediaGalleryCmdMoveFocusTo, you can select the media type.
// The native Media Gallery application's UID in S60 platform 2nd Edition FP1
// (Symbian OS v7.0s) and older
#define KMediaGalleryUID3PreFP1 0x101f4d8f
// The native Media Gallery application's UID in S60 platform 2nd Edition FP2
// (Symbian OS v8.0a) and newer, including 3rd Edition
#define KMediaGalleryUID3PostFP1 0x101f8599
#define KMediaGalleryListViewUID 0x00000001
#define KMediaGalleryCmdMoveFocusTo 0x00000001
TVwsViewId id = TVwsViewId( TUid::Uid(KMediaGalleryUID3PostFP1),
TUid::Uid(KMediaGalleryListViewUID) );
ActivateViewL( id, TUid::Uid( KMediaGalleryCmdMoveFocusTo ),KNullDesC8);
// To switch to the images view, you can use:
#define KMediaGalleryCmdMoveFocusTo 0x00000002
// To switch to the videos view, you can use:
#define KMediaGalleryCmdMoveFocusTo 0x00000003 ....
