如何在ios中獲取圖像日期，位置，大小，方向？

Question

當我點擊我的照片庫中的一張照片時，它將使用xip轉到另一個視圖控制器，並在xip中顯示此圖像。還有一個詳細按鈕。當按下詳細按鈕時，我想在該xip上顯示所選圖像的創建日期，位置大小，圖像路徑，相機信息和白平衡。

請幫我，我該如何做到這一點在目標c。

Answer 1

不要忘了添加在構建階段工作框架

#import <AssetsLibrary/AssetsLibrary.h> 



- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ 

NSURL *refURL = [info valueForKey:UIImagePickerControllerReferenceURL]; 

// define the block to call when we get the asset based on the url (below) 
    ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset) 
{ 
ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation]; 
NSLog(@"[imageRep filename] : %@", [imageRep filename]); 
}; 

// get the asset library and fetch the asset based on the ref url (pass in block above) 
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init]; 
[assetslibrary assetForURL:refURL resultBlock:resultblock failureBlock:nil]; 

}