Created
January 7, 2015 18:19
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Finding image type from NSData or UIImage
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| + (NSString *)contentTypeForImageData:(NSData *)data { | |
| uint8_t c; | |
| [data getBytes:&c length:1]; | |
| switch (c) { | |
| case 0xFF: | |
| return @"image/jpeg"; | |
| case 0x89: | |
| return @"image/png"; | |
| case 0x47: | |
| return @"image/gif"; | |
| case 0x49: | |
| case 0x4D: | |
| return @"image/tiff"; | |
| } | |
| return nil; | |
| } |
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