如何绑定到iOS Foundations功能NSLog [英] How to I bind to the iOS Foundations function NSLog
本文介绍了如何绑定到iOS Foundations功能NSLog的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试创建与NSLog的C#绑定，以便在我的MonoTouch应用程序中使用.
I am attempting to create a C# binding to NSLog for use in my MonoTouch app.
Here is the link to the iOS documentation on NSLog (NSLog). So far I haven't had much luck in figuring out the exact syntax. Below is my current code:
using System;
using System.Runtime.InteropServices;
namespace CustomTableDemo
{
public static class FoundationFunctions
{
[DllImport("/System/Library/Frameworks/Foundation.framework/Foundation")]
public extern static void NSLog(string format, params string[] messages);
}
}
然后我按如下方式调用该函数:
Then I call the function as follows:
Console.WriteLine("Before NSLog attempt...");
FoundationFunctions.NSLog("%@", "Hello World");
然后应用程序崩溃了，这是我的日志文件.
Then the app crashes and this is my log file.
Before NSLog attempt...
Stacktrace:
at (wrapper managed-to-native) CustomTableDemo.FoundationFunctions.NSLog (string,string[]) <IL 0x000b1, 0xffffffff>
at CustomTableDemo.AppDelegate.FinishedLaunching (MonoTouch.UIKit.UIApplication,MonoTouch.Foundation.NSDictionary) [0x0000a] in /Users/bartsipes/Projects/CustomTableDemo/CustomTableDemo/Main.cs:31
at (wrapper runtime-invoke) <Module>.runtime_invoke_bool__this___object_object (object,intptr,intptr,intptr) <IL 0x00066, 0xffffffff>
at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff>
at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x00038] in /Developer/MonoTouch/Source/monotouch/monotouch/UIKit/UIApplication.cs:26
at MonoTouch.UIKit.UIApplication.Main (string[]) [0x00000] in /Developer/MonoTouch/Source/monotouch/monotouch/UIKit/UIApplication.cs:31
at CustomTableDemo.Application.Main (string[]) [0x00000] in /Users/bartsipes/Projects/CustomTableDemo/CustomTableDemo/Main.cs:14
at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff>
Native stacktrace:
0 CustomTableDemo 0x000c55a3 mono_handle_native_sigsegv + 343
1 CustomTableDemo 0x0000f7e8 mono_sigsegv_signal_handler + 322
2 libSystem.B.dylib 0x999fb05b _sigtramp + 43
3 ??? 0xffffffff 0x0 + 4294967295
4 CoreFoundation 0x012fc317 __CFStringAppendFormatCore + 103
5 CoreFoundation 0x01245507 _CFStringCreateWithFormatAndArgumentsAux + 119
6 CoreFoundation 0x012cd1ee _CFLogvEx + 142
7 Foundation 0x0065a9a4 NSLogv + 143
8 Foundation 0x0065a913 NSLog + 27
9 ??? 0x07fdd694 0x0 + 134076052
10 ??? 0x05e26c1a 0x0 + 98724890
11 ??? 0x05e26eeb 0x0 + 98725611
12 CustomTableDemo 0x0000f5a3 mono_jit_runtime_invoke + 1332
13 CustomTableDemo 0x001d9411 mono_runtime_invoke + 137
14 CustomTableDemo 0x0027d9d7 monotouch_trampoline + 2527
15 UIKit 0x00884c89 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1163
16 UIKit 0x00886d88 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 439
17 UIKit 0x00891617 -[UIApplication handleEvent:withNewEvent:] + 1533
18 UIKit 0x00889abf -[UIApplication sendEvent:] + 71
19 UIKit 0x0088ef2e _UIApplicationHandleEvent + 7576
20 GraphicsServices 0x01a94992 PurpleEventCallback + 1550
21 CoreFoundation 0x012f5944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
22 CoreFoundation 0x01255cf7 __CFRunLoopDoSource1 + 215
23 CoreFoundation 0x01252f83 __CFRunLoopRun + 979
24 CoreFoundation 0x01252840 CFRunLoopRunSpecific + 208
25 CoreFoundation 0x01252761 CFRunLoopRunInMode + 97
26 UIKit 0x008867d2 -[UIApplication _run] + 623
27 UIKit 0x00892c93 UIApplicationMain + 1160
28 ??? 0x05e222db 0x0 + 98706139
29 ??? 0x05e220ac 0x0 + 98705580
30 ??? 0x05e21e7c 0x0 + 98705020
31 ??? 0x05e21cd4 0x0 + 98704596
32 ??? 0x05e21e26 0x0 + 98704934
33 CustomTableDemo 0x0000f5a3 mono_jit_runtime_invoke + 1332
34 CustomTableDemo 0x001d9411 mono_runtime_invoke + 137
35 CustomTableDemo 0x001dba70 mono_runtime_exec_main + 669
36 CustomTableDemo 0x001dae7e mono_runtime_run_main + 843
37 CustomTableDemo 0x0009c573 mono_jit_exec + 200
38 CustomTableDemo 0x00002df0 main + 4060
39 CustomTableDemo 0x00001bf9 _start + 208
40 CustomTableDemo 0x00001b28 start + 40
Debug info from gdb:
dyld: could not load inserted library: /Users/bartsipes/Library/Application Support/iPhone Simulator/4.3/Applications/599C50F9-29E2-4402-AA84-7B6DC1A1CD36/CustomTableDemo.app/monotouch-fixes.dylib
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
推荐答案
我将@Ck.的答案更新了一些:
I brought @Ck.'s answer up to date a bit:
[DllImport ("/System/Library/Frameworks/Foundation.framework/Foundation")]
public extern static void NSLog (IntPtr format, IntPtr arg1);
static void NSLog (string s)
{
NSString p1 = new NSString ("%@");
NSString p2 = new NSString (s);
NSLog (p1.Handle, p2.Handle);
}
这篇关于如何绑定到iOS Foundations功能NSLog的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
