I having problem on displaying the item artwork of MPMediaItem.
Here is the code for setting the music cover image:
- (void)updateMusicInfo
{
if(_localSongList.count != 0)
{
_currentTrackNumber = [DataHolder getCurrentTrackNumber];
MPMediaItem *mediaItem = [_localSongList objectAtIndex:_currentTrackNumber];
if(mediaItem != nil)
{
MPMediaItemArtwork *itemArtwork = [mediaItem valueForKey:MPMediaItemPropertyArtwork];
UIImage *iconImage;
if(itemArtwork == nil)
{
iconImage = [UIImage imageNamed:#"default_music_cover.png"];
}
else
{
iconImage = [itemArtwork imageWithSize:CGSizeMake(_ivSongCover.frame.size.height, _ivSongCover.frame.size.width)];
}
[_ivSongCover setImage:iconImage];
}
}
}
It seems that itemArtwork isn't null. Because if it is null, then my default music cover image should be used instead.
Here is the screenshot of the result of a blank music cover
In this case, I am hoping that itemArtwork should be a null so that I could use my default cover image. But in this case, it isn't null, worse, it doesn't even give me anything to display at all. How can I solve this one.
I am thinking of adding another logic, which is detecting the dominant colour of the current image used. If it consist of exactly no colour at all or just plain clear colour, then I would conclude that there is no music cover at all, and make use of the default one.
However, I want to know is there anything wrong with my code?
Take note: This song does not really have a cover image, BUT I wish that the itemArtwork should return a null, but it doesn't.
I hope I made myself clear. Please help. Thanks in advance!
Related
I have seen many questions on this and none have had a solution. I am getting:
An AVPlayerItem can occupy only one position in a player's queue at a time
In the console after quickly taping a view button which should have one of two states:
Successfully preloaded video
only a videoURL which will then be loaded in another VC.
Why is this happening and how can I fix it?
This is my code which handels this in the transitioned to VC:
if numberMedia == 0 {
if selectedPost!.interimMedia[numberMedia].playerLayer != nil {
playCurrentMediaVid(currentMedia: selectedPost!.interimMedia[numberMedia])
} else {
let videoURL = selectedPost!.interimMedia[numberMedia].videoURL
if videoURL != nil {
//if we did not preload the video but have the cached vidURL
preloadVideo(media: selectedPost!.interimMedia[numberMedia])
playCurrentMediaVid(currentMedia: selectedPost!.interimMedia[numberMedia])
} else {
//if we dont have the cached vid url
selectedPost!.interimMedia[numberMedia].videoURL = getVideoURL(stringUrl: selectedPost!.interimMedia[numberMedia].videoURLString)
preloadVideo(media: selectedPost!.interimMedia[numberMedia])
playCurrentMediaVid(currentMedia: selectedPost!.interimMedia[numberMedia])
}
}
}
I looked into this problem and found the following problem:
If you print the status.rawValue of the playerQueue and currentItem (the AVPlayerItem) of the AVPlayerQueue (sub-class of AVPlayer) you'll find that the status will be either 0 or 1. For reference: 0 means status.unknown and 1 means status.readyToPlay (the one you want). So if both prints are 0 it fails, which is why you get the error. The position is at unknown, yet you are trying to .play() the playerQueue, which of course results in the error.
My recommendation to you (the fix) is to either find out a way to make the loading of the media inside the AVPlayerItem faster (which may be done putting the URL in a AVAsset instead of trying to immediately init a URL into a AVPlayer), or can use KVO to detect when it has finished loading (sort of like a completionBlock-esque solution).
I have a photo/gif app I made previously using AVFoundation as a base for the camera and taking photos, but I wanted to upgrade it to add some live filtering and post capture filtering too.
After some digging I found gpuimage/gpuimage2 and since my project is in swift 3 I started replacing my previous camera module with gpuimage.
I got the camera to work again but I have issues capturing a photo from the camera to store it as a uiimage until it is uploaded to a server.
do {
self.videoCamera = try Camera(sessionPreset: AVCaptureSessionPresetPhoto, location: .frontFacing)
} catch {
self.videoCamera = nil
print("Couldn't initialize camera with error: \(error)")
}
this is my init and then this is where I place the camera feed in the view
self.filterView!.frame = self.view.frame
self.filterView!.orientation = .portraitUpsideDown
self.filterView!.fillMode = .preserveAspectRatioAndFill
self.videoCamera! --> self.filterView!
self.videoCamera!.startCapture()
as you can see for the moment I don't want to use any filters, I'm trying to first get the basic functionality back (i.e. showing a camera feed the taking 1-5 images in a row)
I noticed there was a saveNextFrameToURL but it saves the file on the device but I only want the uiimage so this is what I put to replace the content of my takePhoto method (images is nil on first run)
func takePhoto(){
if self.images == nil {
self.images = []
}
let pictureOutput = PictureOutput()
pictureOutput.encodedImageFormat = .jpeg
pictureOutput.imageAvailableCallback = {image in
self.images!.append(image)
}
self.videoCamera! --> pictureOutput
}
My issue is that imageAvailableCallback is simply never called (I tried placing a breakpoint in it but nothing) whereas it goes through the rest of the method not raising any errors or warning.
what am I doing wrong ? is it even possible to capture a still image from a non filtered view ? if so how can I add a filter that would not change the image as such so I can still do some unedited photo capture in my app?
I've been going at it for over 2 weeks now and every time I search if anyone had the same issue I only find issues about editing a still image or a filtered image and when I tried filtering the image as such:
self.filterView!.frame = self.view.frame
self.filterView!.orientation = .portraitUpsideDown
self.filterView!.fillMode = .preserveAspectRatioAndFill
self.baseFilter = BrightnessAdjustment()
self.videoCamera! --> self.baseFilter --> self.filterView!
self.videoCamera!.startCapture()
and the takePhoto method
func takePhoto(){
if self.images == nil {
self.images = []
}
let pictureOutput = PictureOutput()
pictureOutput.encodedImageFormat = .jpeg
pictureOutput.imageAvailableCallback = {image in
self.images!.append(image)
}
self.baseFilter! --> pictureOutput
}
I get a white screen instead of my camera feed and still no image.
Any help would be appreciated thank you
I found where my problem was by looking at similar issues and the comments (found one where Brad Larson commented here
Basically it has to do with the lifespan of my pictureOutput variable, since it was enclosed inside a method is didn't last long enough for the callback to be made and to save the image, by making my pictureOutput variable a class variable I solved my issues
I am developing a chat app using parse. I want to play the vodeo when users click on the video message and Display expandable image when the user click on the picture message. for that I need to differentiate image and video. Kindly guide me to do that...
Surely the easiest way will be of course to look at the file extension...?
For future googlers ... on didTapMessageBubbleAtIndexPath delegate you should check for item class
let message = yourMessageArray[indexPath.item]
if message.isMediaMessage() {
if message.media().isKindOfClass(JSQPhotoMediaItem) {
//Handle image
} else if message.media().isKindOfClass(JSQVideoMediaItem) {
let video = message.media() as! JSQVideoMediaItem
let videoURL = video.fileURL
}
}
Save this information in another field on Parse during the asset upload.
Hey so I'm trying to have a button that when pressed allows the user to choose 2-5 pictures from their photo library then have whatever photo chosen be set onto a uiimageview? I was looking online and couldn't find anything related to how to do it in swift?
Thanks
I worked out using this : https://github.com/zhangao0086/DKImagePickerController .
Getting selected image's thumbnail images:
let pickerController = DKImagePickerController()
pickerController.sourceType = .Photo
pickerController.didCancelled = { () in
println("didCancelled")
}
pickerController.didSelectedAssets = { [unowned self] (assets: [DKAsset]) in
println("didSelectedAssets")
println(assets)
for(var i = 0; i<(assets.count); i++){
print(assets[i].url)
self.PickedArray .addObject(assets[i].thumbnailImage!)
}
self.performSegueWithIdentifier("SegueToPhotoLibraryView", sender: self)
Getting selected image's urls :
assets[i].url instead of assets[i].thumbnailImage
Hope it helps!
Currently iOS does not provide an image picker out of the box that lets you pick multiple images from the photo library. UIImagePickerController only lets you select one image.
But there are several image picker implementations available that let you pick multiple images. You can find a whole bunch at cocoacontrols.com as #ytbryan already mentioned.
I am currently not aware of any multiple image picker implemented in Swift. If someone finds one, please edit and post the link.
I am working on an iOS app and I need to determine if a song has album art. I am using the MPMusicPlayerController to access the native iOS music library and I am using a MPMediaItemArtwork to capture the artwork sent from the iOS music library. This is the coding I use to get the artwork:
MPMediaItemArtwork *mpArt = [mpSong valueForProperty:MPMediaItemPropertyArtwork];
To test if artwork is present I use this:
if (mpArt)
{
imgArt = [mpArt imageWithSize:CGSizeMake(250, 250)];
}
else
{
imgArt = [UIImage imageNamed:#"Alternative_Artwork_Image.jpg"];
}
No matter what the song's artwork is, the result is always true.
Any help would be appreciated. Thank you in advance.
I think it will always return true if it is an iCloud selection because it will eventually download. Try looking for a correlation with MPMediaItemPropertyIsCloudItem
You can also try getting info from the bounds... perhaps the bounds is 0x0 when the image is not found.