How can I prevent my application (using AVPlayer) is muted when the ringtone is muted? - objective-c

The topic may sound strange, but please keep reading on.
I am using AVPlayer to play some sound from the iPod library and everything works fine when using it with headphones plugged in, but when I want to use the app to play from the built in speakers there is no sound output. (The time counter and everything else in the application is still working like there would be sound output. Like it is just muted.)
I checked the volume and the mute lock and then found out that the ringtone was muted. But ringtone muting doesn't affect other applications like the iPod app itself or the Spotify music app.
How can I prevent my application (using AVPlayer) is muted when the ringtone is muted and behave like other music player apps?

You should set your app's audio session to AVAudioSessionCategoryPlayback. From the docs:
Use this category for an
application whose audio playback is of primary importance. Your audio
plays even with the screen locked and with the Ring/Silent switch set
to silent.

Related

how to make my react-native app's sound play with other app(youtube or music player)

How to make my app's sound play when my app is running in the background, even when other player (youtube or apple music) is turned on.
I want to make a beep sound 3 seconds before the end of the time even if I'm playing Youtube.
I tried to use library react-native-sound and react-native-background-timer and they work in background but they don't work if I'm playing youtube.

iOS how to don't stop music when the app start launching

I've noticed that when my app start, the music I'm listening is automatically stopped, and I've noticed that when I start some other apps, the music just continue... this means that I don't know how to manage the actual playing music in the device to let it plays or stop.
I'm developing a game with obj-c and cocos2d btw, I've searched but sadly I've found nothing... so here's my question, how can I let the music I'm listening with my device continue to play even if I start the app ?
edit: I'm using SimpleAudioEngine to start a background music and some sound effects in my app
Place this line in your application:didFinishLaunchingWithOptions: method of your AppDelegate or in general before using the audio player.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryAmbient error:nil];
According to the documentation, the AVAudioSessionCategoryAmbient category is
for an app in which sound playback is nonprimary—that is, your app can
be used successfully with the sound turned off.
This category is also appropriate for “play along” style apps, such as a virtual piano that a user plays over iPod audio. When you
use this category, audio from other apps mixes with your audio. Your
audio is silenced by screen locking and by the Silent switch (called
the Ring/Silent switch on iPhone).
please import AVFoundation/AVFoundation.h
Swift:
Before playing enter this line:
let audioSession = AVAudioSession.sharedInstance()
if audioSession.otherAudioPlaying {
_ = try? audioSession.setCategory(AVAudioSessionCategoryAmbient, withOptions: AVAudioSessionCategoryOptions.MixWithOthers)
}
For people looking to solve this within react native (iOS)
My problem was quite the opposite where some of our muted videos with no music was causing background sound to be paused from other apps for no reason.
To fix this, also pass ignoreSilentSwitch="obey" prop alongside disableFocus and muted props through your Video component.
According to the docs:
You can activate the audio session at any time after setting its category, but it’s generally preferable to defer this call until your app begins audio playback. Deferring the call ensures that you won’t prematurely interrupt any other background audio that may be in progress.
Be sure not to be starting the audio session directly via its setActive method or indirectly via AVAudioEngine or other playback engine(s) immediately after the app launches. You should set only the category at this stage if you don't want your app to interrupt others on launch. If you're using AVAudioEngine, defer setting up the engine or connecting anything to the engine's mainMixerNode or outputNode until you actually need to start playing something.
When your app starts playing music, it will pause any audio currently playing. For obvious reasons. If you want your music to carry on playing when the app launches then don't let the app play any music.

can I run movie player in background when mirroring to external screen - objective c

I have an application that plays video from local disk and when a second screen is connected (through AV composite cable) it switch the movie view to the external screen. this is working fine so far. what I want is, when the user press the home button and the app goes to background mode; I want to continue playing the video in the second screen while the app is running in the background mode. this works for audio, as I have set my application to continue play audio in background mode and it is working fine: the audio continue to play in the background mode fine. now is it possible to continue play video as well, and how?
This is not possible. It is outside of the scope of an iOS app to continue powering a screen while it is in the background.

Get Audio Levels of Music Playing

I'd like to create some sort of visualization in my app that uses the music that's already playing in on the device (iPhone or iPad). Is it possible to get the audio data that is being played by other apps, such as the default music app, or even something (third party) like Spotify?
Basically, I just want my UI to react to the music playing, but I'd rather not force the user to use my music player for the UI to react.
No, that is not possible. Sorry.

OverrideCategoryDefaultToSpeaker not responding with iPod Touch

A little background:
I am working on an iOS app which does audio recording and makes use of the audio session category AVAudioSessionCategoryPlayAndRecord. The app also plays sound effects which I want to play through the device's main speaker (while the user is not recording). In order stop output audio from playing through the main speakers while recording I use the following code snippet:
UInt32 defaultRoute = 1;
AudioSessionSetProperty(kAudioSessionProperty_OverrideCategoryDefaultToSpeaker,
sizeof (defaultRoute),
&defaultRoute);
When the user starts recording I run the same code again with a defaultRoute of 0 which causes output audio to stop being played through the speakers and therefore not included in the recording. This method has been working fine on the iPhone.
The Issue:
When I run the same code on an iPod Touch (4th generation), the kAudioSessionProperty_OverrideCategoryDefaultToSpeaker property does not seem to have any affect. The result is that while a user is recording audio on their iPod Touch, sound effects will still play through the speaker and are included in the recording.
Does anyone know why this is happening, or how to fix it? I want to the behaviour on the iPod Touch to match the behaviour on the iPhone: output audio does not play through the main speakers while recording.
Note:
The closest to a solution that I have gotten is detecting if the device is an iPod Touch and if it is, mute system audio when recording starts using the following code snippet:
[MPMusicPlayerController iPodMusicPlayer].volume = 0.0;
This was not a desirable solution as when this code is executed, the volume overlay view pops up showing that the volume was turned down. This adds confusion to the UI and is not a good enough solution.
Any help would be appreciated!