Need to share songs with different devices using multipeer connectivity. - ios

Question

Requirement:
We are able to make connection from host device to multiple slave devices. For example, if device A initiate connection to device B and C, the contributor devices can accept peer connection and connected to device A. Here A is master device and B and C are contributors device. Now if B share their songs to A, A can play songs and see songs information. In meantime C will be idle but should connected. When B will finish to play songs, then C can also able to share their songs to device A.
Here are the problem that we have faced to achieve above tasks:
1. As soon as B started sharing songs to A, C got crashed. But A still able to play song shared by B.
array = [[NSMutableArray alloc] initWithObjects:[self.session connectedPeers], nil];
[_session sendData:[NSKeyedArchiver archivedDataWithRootObject:[info mutableCopy]] toPeers:[array objectAtIndex:0] withMode:MCSessionSendDataUnreliable error: &error];
NSLog(#"localizedDescription %#",error);
To overcome from this problem directly pass array without index here toPeers:array. It is working and we are able to share and play songs with device A, but song information not receive to device A.
Here are full code that we are using:
contributor Controller :
- (void)mediaPicker:(MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection
{
[self dismissViewControllerAnimated:YES completion:nil];
someMutableArray = [mediaItemCollection items];
counter = 0;
if(someMutableArray.count>1){
BOOL isselectsongone=YES;
[[NSUserDefaults standardUserDefaults] setBool:isselectsongone forKey:#"isselectsongone"];
}
[self showSpinner];
[self someSelector:nil];
}
- (void)someSelector:(NSNotification *)notification {
if(notification && someMutableArray.count>1 && counter <someMutableArray.count-1){
NSDate *start = [NSDate date];
counter=counter+1;
[self.outputStreamer stop];
self.outputStreamer = nil;
self.outputStream = nil;
}
song=[someMutableArray objectAtIndex:counter];
NSMutableDictionary *info = [NSMutableDictionary dictionary];
info=[[NSMutableDictionary alloc] init];
info[#"title"] = [song valueForProperty:MPMediaItemPropertyTitle] ? [song valueForProperty:MPMediaItemPropertyTitle] : #"";
info[#"artist"] = [song valueForProperty:MPMediaItemPropertyArtist] ? [song valueForProperty:MPMediaItemPropertyArtist] : #"";
//NSNumber *duration=[song valueForProperty:MPMediaItemPropertyPlaybackDuration];
int fullminutes = floor([timeinterval floatValue] / 60); // fullminutes is an int
int fullseconds = trunc([duration floatValue] - fullminutes * 60); // fullseconds is an int
[NSTimer scheduledTimerWithTimeInterval:[duration doubleValue]target:self selector:#selector(getdata) userInfo:nil repeats:YES];
}
-(void)getdata {
NSMutableDictionary *info = [NSMutableDictionary dictionary];
info=[[NSMutableDictionary alloc] init];
info[#"title"] = [song valueForProperty:MPMediaItemPropertyTitle] ? [song valueForProperty:MPMediaItemPropertyTitle] : #"";
info[#"artist"] = [song valueForProperty:MPMediaItemPropertyArtist] ? [song valueForProperty:MPMediaItemPropertyArtist] : #"";
NSNumber *duration=[song valueForProperty:MPMediaItemPropertyPlaybackDuration];
int fullminutes = floor([duration floatValue] / 60); // fullminutes is an int
int fullseconds = trunc([duration floatValue] - fullminutes * 60); // fullseconds is an int
info[#"duration"] = [NSString stringWithFormat:#"%d:%d", fullminutes, fullseconds];
MPMediaItemArtwork *artwork = [song valueForProperty:MPMediaItemPropertyArtwork];
UIImage *image = [artwork imageWithSize:CGSizeMake(150, 150)];
NSData * data = UIImageJPEGRepresentation(image, 0.0);
image = [UIImage imageWithData:data];
array = [[NSMutableArray alloc] initWithObjects:[self.session connectedPeers], nil];
MCPeerID* peerID11 = self.session.myPeerID;
NSMutableArray *arr=[[NSMutableArray alloc] initWithObjects:peerID11, nil];
NSLog(#"%#",arr);
if (image)
self.songArtWorkImageView.image = image;
else
self.songArtWorkImageView.image = nil;
self.songTitleLbl.text = [NSString stringWithFormat:#"%# \n[Artist : %#]", info[#"title"], info[#"artist"]];
NSError *error;
[_session sendData:[NSKeyedArchiver archivedDataWithRootObject:[info mutableCopy]] toPeers:[array objectAtIndex:0] withMode:MCSessionSendDataUnreliable error: &error];
NSLog(#"localizedDescription %#",error);
#try {
if(_session && _session.connectedPeers && [_session.connectedPeers count] > 0) {
NSLog(#"%#",[song valueForProperty:MPMediaItemPropertyAssetURL]);
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:[song valueForProperty:MPMediaItemPropertyAssetURL] options:nil];
[self convertAsset: asset complition:^(BOOL Success, NSString *filePath) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
if(Success) {
if(image) {
[self saveImage: image withComplition:^(BOOL status, NSString *imageName, NSURL *imageURL) {
if(status) {
#try {
[_session sendResourceAtURL:imageURL withName:imageName toPeer:[_session.connectedPeers objectAtIndex:0]withCompletionHandler:^(NSError *error) {
if (error) {
NSLog(#"Failed to send picture to %#", error.localizedDescription);
return;
}
//Clean up the temp file
NSFileManager *fileManager = [NSFileManager defaultManager];
[fileManager removeItemAtURL:imageURL error:nil];
}];
}
#catch (NSException *exception) {
}
}
}];
}
#try {
[self hideSpinner];
if(!self.outputStream) {
NSArray * connnectedPeers = [_session connectedPeers];
if([connnectedPeers count] != 0) {
[self outputStreamForPeer:[_session.connectedPeers objectAtIndex:0]];
}
}
}
#catch (NSException *exception) {
}
if(self.outputStream) {
self.outputStreamer = [[TDAudioOutputStreamer alloc] initWithOutputStream:self.outputStream];
//
[self.outputStreamer initStream:filePath];
NSLog(#"%#",filePath);
if(self.outputStreamer) {
[self.outputStreamer start];
}
else{
NSLog(#"Error: output streamer not found");
}
}
else{
//self.outputStream=[[NSOutputStream alloc] init];
self.outputStreamer = [[TDAudioOutputStreamer alloc] initWithOutputStream:self.outputStream];
[self.outputStreamer initStream:filePath];
NSLog(#"%#",filePath);
if(self.outputStreamer) {
[self.outputStreamer start];
}
}
}
else {
[UIView showMessageWithTitle:#"Error!" message:#"Error occured!" showInterval:1.5];
}
});
}];
// }
}
}
#catch (NSException *exception) {
NSLog(#"Expection: %#", [exception debugDescription]);
}
//}
}
HostViewcontroller :
- (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID
{
NSLog(#"%#",peerID);
NSLog(#"sessions%#",session);
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
#try {
// NSData *myData = [NSKeyedArchiver archivedDataWithRootObject:data];
info = [NSKeyedUnarchiver unarchiveObjectWithData:data];
self.songTitleLbl.text = [NSString stringWithFormat:#"%# \n[Duration: %#] [Artist : %#] ", info[#"title"], info[#"duration"], info[#"artist"]];
NSLog(#"eeret%#",self.songTitleLbl.text);
self.songArtWorkImageView.image = nil;
[self showSpinner];
}
#catch (NSException *exception) {
self.songTitleLbl.text = #"Some error occured...\nPlease try again";
self.songArtWorkImageView.image = nil;
}
});
}
Please let us know if I have missed anything here or the better way to achieve the above requirement. Any help really appreciated.