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README.md

File metadata and controls

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what is this?

ImageMetadata is a tool to read and write metadata of image.

how to use

You can select a image in the album of your phone and read metadata of Exif,GPS and tiff.when adding data in a image,to write with a specific format and saves,the image will contain the data you need.

codes

  • Use UIImagePickerController to support the function of album browsing,you need import <AssetsLibrary/AssetsLibrary.h> and <ImageIO/ImageIO.h>,add the delegate of UIImagePickerControllerDelegate and UINavigationBarDelegate.

  • Add the imagePickerController to browse local album

     UIImagePickerController *ctrl = [[UIImagePickerController alloc] init];
 ctrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
 trl.delegate = self;
 [self presentViewController:ctrl animated:YES completion:nil];

  • Read and write data in the method imagePickerController: didFinishPickingMediaWithInfo of UIImagePickerControllerDelegate.