Import music and save it to Document Directory in ios

Here we will select music from music album and save it to Document Directory.

Let Start

1. Create Project.

2. Take button and initialize it.

3. Import MediaPlayer.framework.

#import <MediaPlayer/MediaPlayer.h>

Before that first add Framework.

4. On button click open media album to select music.

- (IBAction)btnMedia_clicked:(id)sender {

   

    MPMediaPickerController *mediaPicker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeMusic];

    

    mediaPicker.delegate = self;

    mediaPicker.allowsPickingMultipleItems = NO;

    mediaPicker.prompt = @"Select songs to play";

   //  UINavigationController *navi=[[UINavigationController alloc] initWithRootViewController:mediaPicker];

    [self presentViewController:mediaPicker animated:YES completion:Nil];

    [mediaPicker release];

    

}

5. on Media player Delegate method, import music and save it to Document Directory

- (void) mediaPicker: (MPMediaPickerController *) mediaPicker didPickMediaItems: (MPMediaItemCollection *) mediaItemCollection

{

    [self dismissViewControllerAnimated:YES completion:nil];

    if (mediaItemCollection) {

        

       MPMediaItem *song=[[[mediaItemCollection items] objectAtIndex:0] retain];

        if (! song) {

            return;

        }

        NSURL *assetURL = [song valueForProperty:MPMediaItemPropertyAssetURL];

        AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil];

        

        NSLog (@"Core Audio %@ directly open library URL %@",

               coreAudioCanOpenURL (assetURL) ? @"can" : @"cannot",

               assetURL);

        

        NSLog (@"compatible presets for songAsset: %@",

               [AVAssetExportSession exportPresetsCompatibleWithAsset:songAsset]);

        

        

        /* approach 1: export just the song itself

         */

        AVAssetExportSession *exporter = [[AVAssetExportSession alloc]

                                          initWithAsset: songAsset

                                          presetName: AVAssetExportPresetAppleM4A];

        NSLog (@"created exporter. supportedFileTypes: %@", exporter.supportedFileTypes);

        exporter.outputFileType = @"com.apple.m4a-audio";

        // exporter.outputFileType=@"com.apple.quicktime-movie";

        NSString *exportFile = [myDocumentsDirectory() stringByAppendingPathComponent: @"exported.m4a"];

        

        myDeleteFile(exportFile);

        NSURL *exportURL = [[NSURL fileURLWithPath:exportFile] retain] ;

        exporter.outputURL = exportURL;

        

        // do the export

        [exporter exportAsynchronouslyWithCompletionHandler:^{

            int exportStatus = exporter.status;

            switch (exportStatus) {

                case AVAssetExportSessionStatusFailed: {

                    // log error to text view

                    NSError *exportError = exporter.error;

                    NSLog (@"AVAssetExportSessionStatusFailed: %@", exportError);

                    //errorView.text = exportError ? [exportError description] : @"Unknown failure";

                   // errorView.hidden = NO;

                    break;

                }

                case AVAssetExportSessionStatusCompleted: {

                    NSLog (@"AVAssetExportSessionStatusCompleted");

                   // fileNameLabel.text = [exporter.outputURL lastPathComponent];

                    // set up AVPlayer

                    //[self setUpAVPlayerForURL: exporter.outputURL];

                   // [self enablePCMConversionIfCoreAudioCanOpenURL: exporter.outputURL];

                    break;

                }

                case AVAssetExportSessionStatusUnknown: { NSLog (@"AVAssetExportSessionStatusUnknown"); break;}

                case AVAssetExportSessionStatusExporting: { NSLog (@"AVAssetExportSessionStatusExporting"); break;}

                case AVAssetExportSessionStatusCancelled: { NSLog (@"AVAssetExportSessionStatusCancelled"); break;}

                case AVAssetExportSessionStatusWaiting: { NSLog (@"AVAssetExportSessionStatusWaiting"); break;}

                default: { NSLog (@"didn't get export status"); break;}

            }

        }];

    }

    

}

-(void)mediaPickerDidCancel:(MPMediaPickerController *)mediaPicker

{

  [self dismissViewControllerAnimated:YES completion:nil];

}

IT will import song and put it on document directory