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2014/10/15 ¤U¤È 10:09:19
iphone Programming Glossary: fprintfI need to inspect the view hierarchy on an iPhone program http://stackoverflow.com/questions/2343246/i-need-to-inspect-the-view-hierarchy-on-an-iphone-program formatstring va_start arglist formatstring id outstring NSString alloc initWithFormat formatstring arguments arglist fprintf stderr s n outstring UTF8String va_end arglist @implementation UIView ExploreViews void exploreViewAtLevel int level doLog..
Encoding images to video with ffmpeg http://stackoverflow.com/questions/3334939/encoding-images-to-video-with-ffmpeg outbuf printf Video encoding n find the mpeg video encoder codec avcodec_find_encoder CODEC_ID_MPEG2VIDEO if codec fprintf stderr codec not found n exit 1 c avcodec_alloc_context picture avcodec_alloc_frame put sample parameters c bit_rate 400000.. 10 emit one intra frame every ten frames c max_b_frames 1 c pix_fmt PIX_FMT_YUV420P open it if avcodec_open c codec 0 fprintf stderr could not open codec n exit 1 f fopen filename wb if f fprintf stderr could not open s n filename exit 1 alloc image.. open it if avcodec_open c codec 0 fprintf stderr could not open codec n exit 1 f fopen filename wb if f fprintf stderr could not open s n filename exit 1 alloc image and output buffer outbuf_size 100000 outbuf malloc outbuf_size size..
Data format from recording using Audio Queue framework http://stackoverflow.com/questions/3963827/data-format-from-recording-using-audio-queue-framework AudioQueueEnqueueBuffer inAQ inBuffer 0 NULL AudioQueueEnqueueBuffer failed catch CAXException e char buf 256 fprintf stderr Error s s n e.mOperation e.FormatError buf You can see that I'm passing the data in inBuffer mAudioData to SoundTouch...
kCGColorSpaceGenericRGB is deprecated on iPhone? http://stackoverflow.com/questions/560254/kcgcolorspacegenericrgb-is-deprecated-on-iphone CGColorSpaceCreateWithName kCGColorSpaceGenericRGB 2 bitmapData malloc bitmapByteCount 3 if bitmapData NULL fprintf stderr Memory not allocated return NULL context CGBitmapContextCreate bitmapData 4 pixelsWide pixelsHigh 8 bits per.. per component bitmapBytesPerRow colorSpace kCGImageAlphaPremultipliedLast if context NULL free bitmapData 5 fprintf stderr Context not created return NULL CGColorSpaceRelease colorSpace 6 return context 7 A warning says 'kCGColorSpaceGenericRGB'..
iPhone simulators crash on app launch http://stackoverflow.com/questions/6790848/iphone-simulators-crash-on-app-launch No symbol table info available. #5851 0x90bdbdee in __swsetup No symbol table info available. #5852 0x90bdc1fa in vfprintf_l No symbol table info available. #5853 0x90be620e in fprintf No symbol table info available. #5854 0x003c2543 in __springboard_unimplemented.. No symbol table info available. #5852 0x90bdc1fa in vfprintf_l No symbol table info available. #5853 0x90be620e in fprintf No symbol table info available. #5854 0x003c2543 in __springboard_unimplemented No symbol table info available. #5855 0x003cacd1.. No symbol table info available. #5861 0x90bdbdee in __swsetup No symbol table info available. #5862 0x90bdc1fa in vfprintf_l No symbol table info available. #5863 0x90be620e in fprintf No symbol table info available. #5864 0x003c2543 in __springboard_unimplemented..
http://stackoverflow.com/questions/7271528/nslog-into-file @ n NSString msg NSString alloc initWithFormat NSString stringWithFormat @ @ format arguments ap va_end ap fprintf stderr s 50s 3d s prefix UTF8String funcName lineNumber msg UTF8String msg release @end And import it project wide adding.. stringByAppendingPathComponent @ logfile.txt create if needed if NSFileManager defaultManager fileExistsAtPath path fprintf stderr Creating file at s path UTF8String NSData data writeToFile path atomically YES append NSFileHandle handle NSFileHandle.. seekToEndOfFile handle writeData msg dataUsingEncoding NSUTF8StringEncoding handle closeFile and add this line below fprintf in the _Log function append msg File writing also works in your iPhone device but the file will be created in a directory..
Objective-C 2.0: class_copyPropertyList(), how to list properties from categories http://stackoverflow.com/questions/848636/objective-c-2-0-class-copypropertylist-how-to-list-properties-from-categorie properties class_copyPropertyList LenderClass outCount for i 0 i outCount i objc_property_t property properties i fprintf stdout s s n property_getName property property_getAttributes property But this lists only three properties userInteractionEnabled.. properties class_copyPropertyList TestClass class outCount for i 0 i outCount i objc_property_t property properties i fprintf stdout s s n property_getName property property_getAttributes property pool drain return 0 And here's the output str2 T@..
Recording mp3 instead of caf file http://stackoverflow.com/questions/9399019/recording-mp3-instead-of-caf-file mIsRunning true XThrowIfError AudioQueueStart mQueue NULL AudioQueueStart failed catch CAXException e char buf 256 fprintf stderr Error s s n e.mOperation e.FormatError buf catch ... fprintf stderr An unknown error occurred n Am I missing any.. failed catch CAXException e char buf 256 fprintf stderr Error s s n e.mOperation e.FormatError buf catch ... fprintf stderr An unknown error occurred n Am I missing any settings or what's wrong with my code mp3 be supported from apple https..
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