Question

将音频播放器添加到节点时遇到一些问题。出于某种原因，我得到一个例外，我的申请停止了。这是我的代码的样子

    let node = scene.rootNode.childNodeWithName("box", recursively: true)!

    let source = SCNAudioSource(fileNamed: "test.mp3")
    source.loops = true
    source.volume = 2
    source.positional = true
    source.shouldStream = true
    source.load()
    let player = SCNAudioPlayer(source: source)

    node.addAudioPlayer(player)

有人可以帮我找出问题所在吗？

编辑：例外：

2015-06-12 10：44：29.202 asd [10480：2157476] 10：44：29.202错误：AVAudioNodeImpl.h：39：AVAE_CheckNodeHasEngine：必需条件为false：_engine！= nil 2015-06-12 10：44：29.208 asd [10480：2157476] *由于未被捕获的异常终止应用程序＆＃39; com.apple.coreaudio.avfaudio＆＃39;，原因：＆＃39;必需条件是false：_engine！= nil＆＃39; * 第一次抛出调用堆栈：（ 0 CoreFoundation 0x000000010ca18885 exceptionPreprocess + 165 1 libobjc.A.dylib 0x000000010e9afdf1 objc_exception_throw + 48 2 CoreFoundation 0x000000010ca186ea + [NSException raise：format：arguments：] + 106 3 libAVFAudio.dylib 0x0000000115549efe libAVFAudio.dylib + 98046 4 libAVFAudio.dylib 0x000000011558b4fd libAVFAudio.dylib + 365821 5 libAVFAudio.dylib 0x000000011558aaa5 libAVFAudio.dylib + 363173 6 SceneKit 0x000000010d3695eb C3DTransactionFlush + 1967 7 SceneKit 0x000000010d3699e9 C3DTransactionCommit + 218 8 SceneKit 0x000000010d2f7f6e - [SCNRenderer setPointOfView：] + 4677 9 SceneKit 0x000000010d2f8c05 - [SCNRenderer setScene：completionHandler：] + 213 10 SceneKit 0x000000010d354920 - [SCNView setScene：] + 319 11 asd 0x000000010c8338b2 _TFC3asd18GameViewController11viewDidLoadfS0_FT_T_ + 2866 12 asd 0x000000010c833ba2 _TToFC3asd18GameViewController11viewDidLoadfS0_FT_T_ + 34 13 UIKit 0x000000010d7bbd65 - [UIViewController loadViewIfRequired] + 860 14 UIKit 0x000000010d7bc0b4 - [UIViewController视图] + 27 15 UIKit 0x000000010d69f3d4 - [UIWindow addRootViewControllerViewIfPossible] + 61 16 UIKit 0x000000010d69fad1 - [UIWindow _setHidden：forced：] + 302 17 UIKit 0x000000011c867717 UIKit + 247575 18 UIKit 0x000000010d6b0ff8 - [UIWindow makeKeyAndVisible] + 43 19 UIKit 0x000000010d63302b - [UIApplication _callInitializationDelegatesForMainScene：transitionContext：] + 3545 20 UIKit 0x000000010d638ef0 - [UIApplication _runWithMainScene：transitionContext：completion：] + 1755 21 UIKit 0x000000010d63673f - [UIApplication workspaceDidEndTransaction：] + 188 22 FrontBoardServices 0x0000000116052d7b FrontBoardServices + 163195 23 FrontBoardServices 0x0000000116053118 FrontBoardServices + 164120 24 CoreFoundation 0x000000010c9430f1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 25 CoreFoundation 0x000000010c938eac __CFRunLoopDoSources0 + 556 26 CoreFoundation 0x000000010c938363 __CFRunLoopRun + 867 27 CoreFoundation 0x000000010c937d78 CFRunLoopRunSpecific + 488 28 UIKit 0x000000010d636091 - [UIApplication _run] + 402 29 UIKit 0x000000010d63a79b UIApplicationMain + 171 30 asd 0x000000010c83624d main + 109 31 libdyld.dylib 0x000000010f3a0a05 libdyld.dylib + 10757 32 ??? 0x0000000000000001 0x0 + 1 ） libc ++ abi.dylib：以NSException类型的未捕获异常终止（lldb）

Answer 1

尝试使用SCNAction。或确保音频文件名正确无误。

    let source = SCNAudioSource(fileNamed: "SoundFile.mp3")
    let action = SCNAction.playAudio(source!, waitForCompletion: true)
    node.runAction(action)

将音频播放器添加到SceneKit

1 个答案: