7
Hola estoy usando a continuación framworks,Aplicación estrelló al importar canciones desde la biblioteca del iPod de Iphone para iOs 5.0
#import <MediaPlayer/MediaPlayer.h>
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVFoundation.h>
En uno de los eventos de botón que he implementado por debajo de código para abrir la biblioteca.
MPMediaPickerController *mediaPicker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeMusic];
mediaPicker.delegate = self;
mediaPicker.allowsPickingMultipleItems = YES; // this is the default
[self presentModalViewController:mediaPicker animated:YES];
[mediaPicker release];
Y en los métodos de delegado de MPMediaPickerController código implementado de la siguiente manera
#pragma mark MPMediaPickerController delegate methods
- (void)mediaPicker: (MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection {
// We need to dismiss the picker
[self dismissModalViewControllerAnimated:YES];
// Assign the selected item(s) to the music player and start playback.
counterIpod = [mediaItemCollection.items count];
totalcollection = counterIpod;
if (totalcollection > 10) {
NSString *str = [NSString stringWithFormat:@"BRL Only supports importing 10 songs at a time"];
UIAlertView *connectionAlert = [[UIAlertView alloc] initWithTitle:@"Message !" message:str delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[connectionAlert show];
[connectionAlert release];
}
else {
[self performSelector:@selector(saveMediaItem:) withObject:mediaItemCollection afterDelay:0.1];
//[self saveMediaItem:mediaItemCollection];
//[self showLoadingView];
}
}
- (void)mediaPickerDidCancel:(MPMediaPickerController *)mediaPicker {
// User did not select anything
// We need to dismiss the picker
[self dismissModalViewControllerAnimated:YES];
}
#pragma mark Sace Item Collection to documentsDirectory
-(void)saveMediaItem:(MPMediaItemCollection *)mediaItemCollection {
for (int i = 0; i < [mediaItemCollection.items count]; i++) {
[self exportAssetAsSourceFormat:[[mediaItemCollection items] objectAtIndex:i]];
NSLog(@"for loop : %d", i);
}
NSArray *itemsArray1 = appDelegate.mediaItemCollection1.items;
MPMediaItemCollection *mediaItemCollection2;
if ([itemsArray1 count] != 0) {
mediaItemCollection2 = [self collectionByAppendingCollection:mediaItemCollection];
}
else {
mediaItemCollection2 = mediaItemCollection;
}
[self saveMediaItemAfterDeletting:mediaItemCollection2];
}
-(void)saveMediaItemAfterDeletting:(MPMediaItemCollection *)mediaItemCollection {
NSMutableData* data = [[NSMutableData alloc] init];
NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
[archiver encodeObject:mediaItemCollection forKey:@"my_playlist"];
[archiver finishEncoding];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/playlist.data", documentsDirectory];
NSLog(@"file path = %@", filePath);
[data writeToFile:filePath atomically:YES];
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]){
NSLog(@"file exists : ===========>>>>>>>>>>>");
} else {
NSLog(@"file doesn't exist");
}
//NSLog(@"archiving playlist success = %d", success);
[archiver release];
[data release];
[self UpdateMediaCollection];
}
-(NSString*) getExtension:(MPMediaItem *)item {
// [self showLoadingView];
NSURL *assetURL = [item valueForProperty:MPMediaItemPropertyAssetURL];
AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil];
// JP
// AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]
// initWithAsset:songAsset
// presetName:AVAssetExportPresetPassthrough];
NSArray *tracks = [songAsset tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *track = [tracks objectAtIndex:0];
id desc = [track.formatDescriptions objectAtIndex:0];
const AudioStreamBasicDescription *audioDesc = CMAudioFormatDescriptionGetStreamBasicDescription((CMAudioFormatDescriptionRef)desc);
FourCharCode formatID = audioDesc->mFormatID;
//exportAudioMix.inputParameters = [NSArray arrayWithObject:exportAudioMixInputParameters];
//exportSession.audioMix = exportAudioMix;
NSString *fileType = nil;
NSString *ex = nil;
switch (formatID) {
case kAudioFormatLinearPCM:
{
UInt32 flags = audioDesc->mFormatFlags;
if (flags & kAudioFormatFlagIsBigEndian) {
fileType = @"public.aiff-audio";
ex = @"aif";
} else {
fileType = @"com.microsoft.waveform-audio";
ex = @"wav";
}
}
break;
case kAudioFormatMPEGLayer3:
fileType = @"com.apple.quicktime-movie";
ex = @"mp3";
break;
case kAudioFormatMPEG4AAC:
fileType = @"com.apple.m4a-audio";
ex = @"m4a";
break;
case kAudioFormatAppleLossless:
fileType = @"com.apple.m4a-audio";
ex = @"m4a";
break;
default:
break;
}
return ex;
}
#pragma mark Covert Item separate item collection and store songs into directory
- (void)exportAssetAsSourceFormat:(MPMediaItem *)item {
// [self showLoadingView];
NSLog(@"export asset called");
NSURL *assetURL = [item valueForProperty:MPMediaItemPropertyAssetURL];
NSLog(@"\n>>>> assetURL : %@",[assetURL absoluteString]);
AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil];
// JP
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]
initWithAsset:songAsset
presetName:AVAssetExportPresetPassthrough];
NSArray *tracks = [songAsset tracksWithMediaType:AVMediaTypeAudio];
AVAssetTrack *track = [tracks objectAtIndex:0];
id desc = [track.formatDescriptions objectAtIndex:0];
const AudioStreamBasicDescription *audioDesc = CMAudioFormatDescriptionGetStreamBasicDescription((CMAudioFormatDescriptionRef)desc);
FourCharCode formatID = audioDesc->mFormatID;
//exportAudioMix.inputParameters = [NSArray arrayWithObject:exportAudioMixInputParameters];
//exportSession.audioMix = exportAudioMix;
NSString *fileType = nil;
NSString *ex = nil;
switch (formatID) {
case kAudioFormatLinearPCM:
{
UInt32 flags = audioDesc->mFormatFlags;
if (flags & kAudioFormatFlagIsBigEndian) {
fileType = @"public.aiff-audio";
ex = @"aif";
} else {
fileType = @"com.microsoft.waveform-audio";
ex = @"wav";
}
}
break;
case kAudioFormatMPEGLayer3:
fileType = @"com.apple.quicktime-movie";
ex = @"mp3";
break;
case kAudioFormatMPEG4AAC:
fileType = @"com.apple.m4a-audio";
ex = @"m4a";
break;
case kAudioFormatAppleLossless:
fileType = @"com.apple.m4a-audio";
ex = @"m4a";
break;
default:
break;
}
exportSession.outputFileType = fileType;
NSString *fileName = nil;
fileName = [NSString stringWithString:[item valueForProperty:MPMediaItemPropertyTitle]];
fileName = [[fileName stringByAppendingString:@"-"] stringByAppendingString:[item valueForProperty:MPMediaItemPropertyArtist]];
NSArray *fileNameArray = nil;
fileNameArray = [fileName componentsSeparatedByString:@" "];
fileName = [fileNameArray componentsJoinedByString:@""];
NSLog(@">>>>> fileName = %@", fileName);
NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filePath = [[docDir stringByAppendingPathComponent:fileName] stringByAppendingPathExtension:ex];
NSLog(@"filePath = %@", filePath);
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
//NSLog(@"file exist::::::::::==============>>>>>>>>>>>>>>>>>");
counterIpod--;
if(counterIpod == 0) {
//[self showAlertView];
//[self hideLoadingView];
}
NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection];
[lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO];
//NSLog(@"loading string : %@", str);
return;
}
//NSLog(@"file not exist ===========>>>>>>>>>");
// -------------------------------------
int fileNumber = 0;
NSString *fileNumberString = nil;
NSString *fileNameWithNumber = nil;
while ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
fileNumber++;
fileNumberString = [NSString stringWithFormat:@"-%02d", fileNumber];
fileNameWithNumber = [fileName stringByAppendingString:fileNumberString];
filePath = [[docDir stringByAppendingPathComponent:fileNameWithNumber] stringByAppendingPathExtension:ex];
//NSLog(@"filePath = %@", filePath);
}
// -------------------------------------
myDeleteFile(filePath);
exportSession.outputURL = [NSURL fileURLWithPath:filePath];
[exportSession exportAsynchronouslyWithCompletionHandler:^{
if (exportSession.status == AVAssetExportSessionStatusCompleted) {
NSLog(@"export session completed");
counterIpod--;
NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection];
//[self performSelector:@selector(setLabelText:) withObject:str afterDelay:0.02];
[lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO];
NSLog(@"loading string : %@", str);
if(counterIpod == 0) {
//[self showAlertView];
//[self hideLoadingView];
}
} else {
NSLog(@"export session error");
counterIpod--;
NSString *str = [NSString stringWithFormat:@"Loading %d of %d Beats", totalcollection - counterIpod ,totalcollection];
[lbl performSelectorOnMainThread:@selector(setText:) withObject:str waitUntilDone:NO];
//return NO;
if(counterIpod == 0) {
//[self showAlertView];
//[self hideLoadingView];
}
}
[exportSession release];
}];
//[appDelegate hideLoadingView];
}
#pragma mark method to delete file from document directory
void myDeleteFile (NSString* path) {
// NSLog(@"file path delete file :::::::::: %@", path);
if ([[NSFileManager defaultManager] fileExistsAtPath:path]) {
NSError *deleteErr = nil;
[[NSFileManager defaultManager] removeItemAtPath:path error:&deleteErr];
if (deleteErr) {
NSLog (@"Can't delete %@: %@", path, deleteErr);
}
}
}
Por encima de código de trabajo sin ningún tipo de error en IOS 4.0 o versión posterior, pero para iOS 5.0 son los accidentes en el dispositivo, no puedo resolver estos problemas desde hace 15 días.
Gracias de antemano por su ayuda.
Intente cortar su código a lo que realmente es relevante para el problema. – jbat100
Pero si se corta el código, entonces no podemos obtener el motivo de la falla. Estoy tratando de hacer que cada canción tenga su formato original y cada línea es importante para probar. –
¿Tiene algunos registros de bloqueo o rastros? – jbat100