objective-c - 从 iOS 上的元数据获取位置

Question

有没有办法在不使用 CLLocationManager 的情况下从新拍摄的图像中获取位置？

如果您可以从图像中提取数据，那么使用位置管理器有点愚蠢。

提前致谢

Answer 1

使用 iphone-exif：http ://code.google.com/p/iphone-exif/

#import "EXFJpeg.h"

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
    NSLog(@"image picked %@ with info %@", image, editingInfo);
    NSData* jpegData = UIImageJPEGRepresentation (image,0.5);
    EXFJpeg* jpegScanner = [[EXFJpeg alloc] init];
    [jpegScanner scanImageData: jpegData];
    EXFMetaData* exifData = jpegScanner.exifMetaData;
    EXFJFIF* jfif = jpegScanner.jfif;
    EXFTag* tagDefinition = [exifData tagDefinition: [NSNumber numberWithInt:EXIF_DateTime]];
    //EXFTag* latitudeDef = [exifData tagDefinition: [NSNumber numberWithInt:EXIF_GPSLatitude]];
    //EXFTag* longitudeDef = [exifData tagDefinition: [NSNumber numberWithInt:EXIF_GPSLongitude]];
    id latitudeValue = [exifData tagValue:[NSNumber numberWithInt:EXIF_GPSLatitude]];
    id longitudeValue = [exifData tagValue:[NSNumber numberWithInt:EXIF_GPSLongitude]];
    id datetime = [exifData tagValue:[NSNumber numberWithInt:EXIF_DateTime]];
    id t = [exifData tagValue:[NSNumber numberWithInt:EXIF_Model]];
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