サー、ここでメタデータから uiimage に地理位置情報を追加する必要がありますが、追加した後はフォトアルバムにのみ読み込みますが、ここではその画像が必要です。ここにソースコードを追加しました
- (void) saveImage:(UIImage *)imageToSave withInfo:(NSDictionary *)info
{
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
// Get the image metadata (EXIF & TIFF)
NSUserDefaults *defaults=[NSUserDefaults standardUserDefaults];
[defaults objectForKey:latkey];
float longitude=[defaults floatForKey:longkey];
float latitude=[defaults floatForKey:latkey];
CLLocation * loc=[[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
NSMutableDictionary *metaDict = nil;
if ([info objectForKey:UIImagePickerControllerOriginalImage] != nil) {
metaDict = [NSMutableDictionary dictionaryWithDictionary:[info objectForKey:UIImagePickerControllerMediaMetadata]];
NSDictionary *gpsDict = [self currentLocation:loc];
if ([gpsDict count] > 0) {
[metaDict setObject:gpsDict forKey:(NSString*)kCGImagePropertyGPSDictionary];
}
}
[library writeImageToSavedPhotosAlbum:[imageToSave CGImage] metadata:metaDict completionBlock:^(NSURL *newURL, NSError *error) {
if (error) {
} else {
}
}];
NSLog(@"metaDict :%@",metaDict);
NSURL *referenceURL = [info objectForKey:UIImagePickerControllerReferenceURL];
[library assetForURL:referenceURL resultBlock:^(ALAsset *asset) {
ALAssetRepresentation *rep = [asset defaultRepresentation];
NSDictionary *metadata = rep.metadata;
NSLog(@"%@", metadata);
CGImageRef iref = [rep fullScreenImage] ;
if (iref) {
capturedImage.image = [UIImage imageWithCGImage:iref];
}
} failureBlock:^(NSError *error) {
// error handling
}];
}
現在の地理的位置の EXIF フィールドを作成します。
- (NSMutableDictionary*)currentLocation:(CLLocation *)location{
NSMutableDictionary *locDict = [[NSMutableDictionary alloc] init];
if (location != nil) {
CLLocationDegrees exifLatitude = location.coordinate.latitude;
CLLocationDegrees exifLongitude = location.coordinate.longitude;
[locDict setObject:location.timestamp forKey:(NSString*)kCGImagePropertyGPSTimeStamp];
if (exifLatitude < 0.0) {
exifLatitude = exifLatitude*(-1);
[locDict setObject:@"S" forKey:(NSString*)kCGImagePropertyGPSLatitudeRef];
} else {
[locDict setObject:@"N" forKey:(NSString*)kCGImagePropertyGPSLatitudeRef];
}
[locDict setObject:[NSNumber numberWithFloat:exifLatitude] forKey:(NSString*)kCGImagePropertyGPSLatitude];
if (exifLongitude < 0.0) {
exifLongitude=exifLongitude*(-1);
[locDict setObject:@"W" forKey:(NSString*)kCGImagePropertyGPSLongitudeRef];
} else {
[locDict setObject:@"E" forKey:(NSString*)kCGImagePropertyGPSLongitudeRef];
}
[locDict setObject:[NSNumber numberWithFloat:exifLongitude] forKey:(NSString*) kCGImagePropertyGPSLongitude];
}
return [locDict autorelease];
}
私を助けてください