iOS Question PIP video Play in Release Mode

Erel said:

In debug mode, the debugger adds a request to keep the process running for a few more minutes. You can also do it with this code: https://www.b4x.com/android/forum/threads/lack-of-services-in-ios.130536/post-821810

However this is not the correct solution for background playback.

You need something like: https://www.b4x.com/android/forum/threads/background-playback.49337/#content

Click to expand...

@end
@interface AudioSessionHelper : NSObject
+ (void)configureAudioSession;
+ (void)register;
+ (MPRemoteCommandHandlerStatus)play;
+ (MPRemoteCommandHandlerStatus)pause;
@end

@implementation AudioSessionHelper

+ (void)configureAudioSession {
    NSError *error = nil;
    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback
                                     withOptions:AVAudioSessionCategoryOptionMixWithOthers
                                           error:&error];
    if (error) {
        NSLog(@"Error setting audio session category: %@", error);
    } else {
        [[AVAudioSession sharedInstance] setActive:YES error:&error];
        [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
        if (error) {
            NSLog(@"Error activating audio session: %@", error);
        }
    }
}

+ (void)register {
   MPRemoteCommandCenter* center = [MPRemoteCommandCenter sharedCommandCenter];
   NSLog(@"registering...");
   center.playCommand.enabled = true;
   center.pauseCommand.enabled = true;
   [center.playCommand addTarget:self action:@selector(play)];
   [center.pauseCommand addTarget:self action:@selector(pause)];
}

+ (MPRemoteCommandHandlerStatus) play {
   NSLog(@"test");
   [B4IObjectWrapper raiseEvent:self :@"controlevent:"  :@[@"play"]];
   return MPRemoteCommandHandlerStatusSuccess;

}

+ (MPRemoteCommandHandlerStatus) pause {
   [B4IObjectWrapper raiseEvent:self :@"controlevent:"  :@[@"pause"]];
   return MPRemoteCommandHandlerStatusSuccess;
}

This is the content of the Info.plist from the release run

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!"#$%%&'.23%456795=>?@>ABCDEFJMNDQUW_BuildMachineOSBuild_CFBundleDevelopmentRegion_CFBundleDisplayName_CFBundleExecutable_CFBundleIconName]CFBundleIcons_CFBundleIcons~ipad_CFBundleIdentifier_CFBundleInfoDictionaryVersion\CFBundleName_CFBundlePackageType_CFBundleShortVersionString_CFBundleSignature_CFBundleSupportedPlatforms_CFBundleURLTypes_CFBundleVersionZDTCompiler_DTPlatformBuild^DTPlatformName_DTPlatformVersionZDTSDKBuildYDTSDKNameWDTXcode\DTXcodeBuild_LSRequiresIPhoneOS_MinimumOSVersion_UIBackgroundModes^UIDeviceFamily_UILaunchStoryboardName_UIRequiredDeviceCapabilities_UIRequiresFullScreen_ UISupportedInterfaceOrientations_%UISupportedInterfaceOrientations~ipad_UIUserInterfaceStyleU23C71RenXPIP TestWAppIconÑ()_CFBundlePrimaryIconÒ*+,&_CFBundleIconFiles_CFBundleIconName¡-\AppIcon60x60Ñ(/Ò*+0&¢-1\AppIcon76x76_genesis.pip.testS6.0TAPPLU1.0.0T????¡8XiPhoneOS¡:Ñ;<_CFBundleURLSchemes¡2_"com.apple.compilers.llvm.clang.1_0V21E210XiphoneosT17.4\iphoneos17.4T1530W15E204a T14.0£GHIUaudioWairplay_picture-in-picture¢KL\LaunchScreen¡OUarm64 £RST_UIInterfaceOrientationPortrait_#UIInterfaceOrientationLandscapeLeft_$UIInterfaceOrientationLandscapeRight¤RSTV_(UIInterfaceOrientationPortraitUpsideDownULight O e — ¬ ¿ Í â ÷$:Wkˆ›¸ÊÙíø
,?Sb{š±Ôü%-0FK_rt„‰Œ™¬°µ»ÀÂËÍÐåç!.3;<AEKShkmo|~„…‰ªÐ÷ü' X -

Click to expand...

bplist00ß"

!"#$%%&'.23%456795>?@A?BCDEFGKNOERVX_BuildMachineOSBuild_CFBundleDevelopmentRegion_CFBundleDisplayName_CFBundleExecutable_CFBundleIconName]CFBundleIcons_CFBundleIcons~ipad_CFBundleIdentifier_CFBundleInfoDictionaryVersion\CFBundleName_CFBundlePackageType_CFBundleShortVersionString_CFBundleSignature_CFBundleSupportedPlatforms_CFBundleURLTypes_CFBundleVersionZDTCompiler_DTPlatformBuild^DTPlatformName_DTPlatformVersionZDTSDKBuildYDTSDKNameWDTXcode\DTXcodeBuild_LSRequiresIPhoneOS_MinimumOSVersion_UIBackgroundModes^UIDeviceFamily_UILaunchStoryboardName_UIRequiredDeviceCapabilities_UIRequiresFullScreen_ UISupportedInterfaceOrientations_%UISupportedInterfaceOrientations~ipad_UIUserInterfaceStyleU23C71RenXPIP TestWAppIconÑ()_CFBundlePrimaryIconÒ*+,&_CFBundleIconFiles_CFBundleIconName¡-\AppIcon60x60Ñ(/Ò*+0&¢-1\AppIcon76x76_genesis.pip.testS6.0TAPPLU1.0.0T????¡8XiPhoneOS¡:Ñ;<_CFBundleURLSchemes¡=Zb4idebug31_"com.apple.compilers.llvm.clang.1_0V21E210XiphoneosT17.4\iphoneos17.4T1530W15E204a T14.0£HIJUaudioWairplay_picture-in-picture¢LM\LaunchScreen¡PUarm64 £STU_UIInterfaceOrientationPortrait_#UIInterfaceOrientationLandscapeLeft_$UIInterfaceOrientationLandscapeRight¤STUW_(UIInterfaceOrientationPortraitUpsideDownULight O e — ¬ ¿ Í â ÷$:Wkˆ›¸ÊÙíø
,?Sb{š±Ôü%-0FK_rt„‰Œ™¬°µ»ÀÂËÍÐåçò',9>FGLPV^svxz‡‰”µÛ2 Y 8

Click to expand...

Erel said:

Have you added the "background" declaration: https://www.b4x.com/android/forum/threads/background-playback.49337/#content ?

Click to expand...

#PlistExtra: <key>UIBackgroundModes</key><array><string>audio</string></array>

Erel said:

Please upload a small example with only this feature and I'll test it.

Click to expand...

Erel said:

It looks like you need to change to PIP mode before the application is going into the background.

Example:

B4X:

Sub StartPlayingVideo(playerViewController2 As NativeObject)
    Dim player As NativeObject = playerViewController2.GetField("player")
    player.RunMethod("play", Null)
    StartPIP
End Sub

I tried to call it from B4XPage_Disappear and it didn't work.
Might work from Application_Inactive.

And worth adding a call to StartBackgroundTask (put the inline OBJC before the current ones).

Click to expand...