Mercurial > sdl-ios-xcode
annotate Xcode/TemplatesForXcodeLeopard/SDL Cocoa Application/main.c @ 3487:24d13328c44a
Eric Wing to Sam, hfutrell
This one is quite puzzling. I found a partial workaround, but I don't fully understand the reasons yet.
First, the console is complaining about not finding a nib for MainWindow.
I tried removing the entry for this in the info.plist, and the message went away, but it didn't really change anything.
Second, I stepped through this with the debugger and broke up some lines. It seems that the basic act of calling
view = [SDL_uikitopenglview alloc];
or even
view = [SDL_uikitview alloc]
will crash the program. The debugger messages plus the stack trace make me think it's not finding the SDL_uikitview classes for some reason. But I don't understand why this would be.
view = [UIView alloc] will not crash the program.
For kicks, I added a new definition of a class called SDL_object which subclasses NSObject in the same files as SDL_uikitopenglview and then call
view = [SDL_object alloc];
This does not crash the program.
So, then I modified SDL_object to subclass UIView. No crash.
Next, I made SDL_object subclass UIView<UITextFieldDelegate> . This crashes.
So it is the act of conforming to the UITextFieldDelegate protocol that is crashing things.
I don't understand why it would crash on alloc though. I'm guessing either a delegate needs to be set somewhere or one of the required methods needs to be implemented. But in the former case, I would not expect a crash, but a silent message to nil and something else doesn't work. And in the latter case, I would expect a compiler warning and an exception thrown instead of a crash.
Anyway, my temporary workaround is to change the interface declaration for SDL_uikitview to look like:
#if SDL_IPHONE_KEYBOARD
@interface SDL_uikitview : UIView<UITextFieldDelegate> {
#else
@interface SDL_uikitview : UIView {
#endif
And then disable the keyboard support in the SDL_config_iphoneos.h file.
/* enable iPhone keyboard support */
#define SDL_IPHONE_KEYBOARD 0
-Eric
On Nov 23, 2009, at 1:43 AM, Sam Lantinga wrote:
> I ran into a blocking startup crash with the Happy demo on iPhone OS 3.1.2 on my new iPhone:
>
> #0 0x323fea14 in _class_isInitialized
> #1 0x323fea68 in _class_initialize
> #2 0x32403e92 in prepareForMethodLookup
> #3 0x32401244 in lookUpMethod
> #4 0x323fea10 in _class_lookupMethodAndLoadCache
> #5 0x323fe746 in objc_msgSend_uncached
> #6 0x323feb26 in _class_initialize
> #7 0x323fea58 in _class_initialize
> #8 0x32403e92 in prepareForMethodLookup
> #9 0x32401244 in lookUpMethod
> #10 0x323fea10 in _class_lookupMethodAndLoadCache
> #11 0x323fe746 in objc_msgSend_uncached
> #12 0x000554dc in UIKit_GL_CreateContext at SDL_uikitopengles.m:103
> #13 0x0004f89e in SDL_GL_CreateContext at SDL_video.c:3155
> #14 0x000579e8 in GLES_CreateRenderer at SDL_renderer_gles.c:282
> #15 0x0004d7b8 in SDL_CreateRenderer at SDL_video.c:1509
> #16 0x00002bc2 in SDL_main at happy.c:156
> #17 0x000571b2 in -[SDLUIKitDelegate postFinishLaunch] at
> SDL_uikitappdelegate.m:77
> #18 0x313f9ef2 in __NSFireDelayedPerform
> #19 0x32567bb2 in CFRunLoopRunSpecific
> #20 0x3256735c in CFRunLoopRunInMode
> #21 0x32912cbe in GSEventRunModal
> #22 0x32912d6a in GSEventRun
> #23 0x32b6276e in -[UIApplication _run]
> #24 0x32b61472 in UIApplicationMain
> #25 0x00057088 in main at SDL_uikitappdelegate.m:50
>
> Any ideas?
>
> See ya!
> --
> -Sam Lantinga, Founder and President, Galaxy Gameworks LLC
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Nov 2009 08:12:32 +0000 |
| parents | d44a0a913aa2 |
| children |
| rev | line source |
|---|---|
| 3331 | 1 |
| 2 /* Simple program: Create a blank window, wait for keypress, quit. | |
| 3 | |
| 4 Please see the SDL documentation for details on using the SDL API: | |
| 5 /Developer/Documentation/SDL/docs.html | |
| 6 */ | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 #include <stdlib.h> | |
| 10 #include <string.h> | |
| 11 #include <math.h> | |
| 12 | |
| 13 #include "SDL.h" | |
| 14 | |
| 15 int main(int argc, char *argv[]) | |
| 16 { | |
| 17 Uint32 initflags = SDL_INIT_VIDEO; /* See documentation for details */ | |
| 18 SDL_Surface *screen; | |
| 19 Uint8 video_bpp = 0; | |
| 20 Uint32 videoflags = SDL_SWSURFACE; | |
| 21 int done; | |
| 22 SDL_Event event; | |
| 23 | |
| 24 /* Initialize the SDL library */ | |
| 25 if ( SDL_Init(initflags) < 0 ) { | |
| 26 fprintf(stderr, "Couldn't initialize SDL: %s\n", | |
| 27 SDL_GetError()); | |
| 28 exit(1); | |
| 29 } | |
| 30 | |
| 31 /* Set 640x480 video mode */ | |
| 32 screen=SDL_SetVideoMode(640,480, video_bpp, videoflags); | |
| 33 if (screen == NULL) { | |
| 34 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", | |
| 35 video_bpp, SDL_GetError()); | |
| 36 SDL_Quit(); | |
| 37 exit(2); | |
| 38 } | |
| 39 | |
| 40 done = 0; | |
| 41 while ( !done ) { | |
| 42 | |
| 43 /* Check for events */ | |
| 44 while ( SDL_PollEvent(&event) ) { | |
| 45 switch (event.type) { | |
| 46 | |
| 47 case SDL_MOUSEMOTION: | |
| 48 break; | |
| 49 case SDL_MOUSEBUTTONDOWN: | |
| 50 break; | |
| 51 case SDL_KEYDOWN: | |
| 52 /* Any keypress quits the app... */ | |
| 53 case SDL_QUIT: | |
| 54 done = 1; | |
| 55 break; | |
| 56 default: | |
| 57 break; | |
| 58 } | |
| 59 } | |
| 60 } | |
| 61 | |
| 62 /* Clean up the SDL library */ | |
| 63 SDL_Quit(); | |
| 64 return(0); | |
| 65 } |