我将这个Objective-C代码转换为Rubymotion并遇到一些意外错误
AudioComponentDescription desc;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_RemoteIO;
// ...
在RM
desc = AudioComponentDescription.new
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_RemoteIO;
# ...
我收到错误<NameError: uninitialized constant AudioComponentDescription>
我尝试了以下内容 - 创建了两个类似的类，调用AudioComponentDescription。其中一个是Objective-C，其中一个是Rubymotion。
这是一个非常简单的应用程序，其中没有别的东西。
# -*- coding: utf-8 -*-
$:.unshift("/Library/RubyMotion/lib")
require 'motion/project/template/ios'
begin
require 'bundler'
Bundler.require
rescue LoadError
end
Motion::Project::App.setup do |app|
app.name = 'CoreAudioSandbox'
app.deployment_target = "6.0"
app.frameworks += %w[ AudioToolbox AVFoundation CoreAudio AudioUnit AudioComponent ]
app.vendor_project('vendor/AudioController', :static)
end
#import <AudioToolbox/AudioToolbox.h>
@interface AudioController : NSObject
{
}
#import "AudioController.h"
@implementation AudioController
#pragma mark init
- (id)init
{
AudioComponentDescription desc;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_RemoteIO;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
return self;
}
class AudioController2
def init
desc = AudioComponentDescription.new
desc.componentType = KAudioUnitType_Output
desc.componentSubType = KAudioUnitSubType_RemoteIO
desc.componentFlags = 0
desc.componentFlagsMask = 0
desc.componentManufacturer = KAudioUnitManufacturer_Apple
return self
end
end
def application(application, didFinishLaunchingWithOptions: launchOptions)
NSLog("Initializing AudioController (Objective-C)")
AudioController.alloc.init
NSLog("Initializing AudioController2 (Rubymotion)")
AudioController2.alloc.init
true
end
初始化AudioController实例，但在AudioController2实例上呱呱叫。
这是错误：
2014-04-09 19:54:01.218 CoreAudioSandbox[19313:70b] Initializing AudioController (Objective-C)
2014-04-09 19:54:01.219 CoreAudioSandbox[19313:70b] Initializing AudioController2 (Rubymotion)
(main)> 2014-04-09 19:54:01.593 CoreAudioSandbox[19313:70b] audio_controller2.rb:4:in `init': uninitialized constant AudioController2::AudioComponentDescription (NameError)
from app_delegate.rb:11:in `application:didFinishLaunchingWithOptions:'
2014-04-09 19:54:01.596 CoreAudioSandbox[19313:70b] *** Terminating app due to uncaught exception 'NameError', reason: 'audio_controller2.rb:4:in `init': uninitialized constant AudioController2::AudioComponentDescription (NameError)
from app_delegate.rb:11:in `application:didFinishLaunchingWithOptions:'
'
*** First throw call stack:
(
0 CoreFoundation 0x025a71e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x002048e5 objc_exception_throw + 44
2 CoreAudioSandbox 0x001544da _ZL10__vm_raisev + 346
3 CoreAudioSandbox 0x001545c2 rb_vm_raise + 226
4 CoreAudioSandbox 0x00059ef1 rb_exc_raise + 17
5 CoreAudioSandbox 0x00053737 rb_name_error + 135
6 CoreAudioSandbox 0x0010d2f5 rb_mod_const_missing + 165
7 CoreAudioSandbox 0x00148f4d _ZL20dispatch_rimp_callerPFP11objc_objectS0_P13objc_selectorzEmS1_iPKm + 46445
8 CoreAudioSandbox 0x0012f94a rb_vm_dispatch + 6474
9 CoreAudioSandbox 0x0010e166 rb_const_get_0 + 1046
10 CoreAudioSandbox 0x0010e260 rb_const_get + 32
11 CoreAudioSandbox 0x0014c512 rb_vm_const_lookup_level + 338
12 CoreAudioSandbox 0x000045a3 vm_get_const + 227
13 CoreAudioSandbox 0x0000cc08 rb_scope__init__ + 104
14 CoreAudioSandbox 0x00148f4d _ZL20dispatch_rimp_callerPFP11objc_objectS0_P13objc_selectorzEmS1_iPKm + 46445
15 CoreAudioSandbox 0x0012f94a rb_vm_dispatch + 6474
16 CoreAudioSandbox 0x000147ac vm_dispatch + 1100
17 CoreAudioSandbox 0x0001d327 rb_scope__application:didFinishLaunchingWithOptions:__ + 727
18 CoreAudioSandbox 0x0001d39f __unnamed_35 + 95
19 UIKit 0x0062a14f -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 309
20 UIKit 0x0062aaa1 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1810
21 UIKit 0x0062f667 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 824
22 UIKit 0x00643f92 -[UIApplication handleEvent:withNewEvent:] + 3517
23 UIKit 0x00644555 -[UIApplication sendEvent:] + 85
24 UIKit 0x00631250 _UIApplicationHandleEvent + 683
25 GraphicsServices 0x045e1f02 _PurpleEventCallback + 776
26 GraphicsServices 0x045e1a0d PurpleEventCallback + 46
27 CoreFoundation 0x02522ca5 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
28 CoreFoundation 0x025229db __CFRunLoopDoSource1 + 523
29 CoreFoundation 0x0254d68c __CFRunLoopRun + 2156
30 CoreFoundation 0x0254c9d3 CFRunLoopRunSpecific + 467
31 CoreFoundation 0x0254c7eb CFRunLoopRunInMode + 123
32 UIKit 0x0062ed9c -[UIApplication _run] + 840
33 UIKit 0x00630f9b UIApplicationMain + 1225
34 CoreAudioSandbox 0x000034ac main + 156
35 libdyld.dylib 0x03b98701 start + 1
36 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NameError