iOS 关于图片地理位置隐私信息的分析和读取

时间：2016-06-17 08:28:55 阅读：263 评论：0 收藏：0 [点我收藏+]

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今天突然想到微信朋友圈发照片，涉及个人隐私的地理位置是否外泄。因为iphone拍照的照片都会带有地理位置等信息，我们先来实现怎么读取里面的安全信息，然后再来分析

[objc] view plain copy

#import "ViewController.h"
#import <ImageIO/ImageIO.h>
#import <AssetsLibrary/AssetsLibrary.h>
@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//创建一个UIImagePickerController对象
UIImagePickerController *ctrl = [[UIImagePickerController alloc] init];
//设置类型
ctrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//设置代理
ctrl.delegate = self;
//显示
[self presentViewController:ctrl animated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if(picker.sourceType == UIImagePickerControllerSourceTypePhotoLibrary){
//UIImage *image= [info objectForKey:UIImagePickerControllerOriginalImage];
NSURL *assetURL = [info objectForKey:UIImagePickerControllerReferenceURL];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library assetForURL:assetURL
resultBlock:^(ALAsset *asset) {
NSDictionary* imageMetadata = [[NSMutableDictionary alloc] initWithDictionary:asset.defaultRepresentation.metadata];
NSDictionary *GPS = [imageMetadata objectForKey:(NSString *)kCGImagePropertyGPSDictionary];
NSLog(@"－－－－－－－－%@",GPS);//地理位置信息
NSLog(@"%@",imageMetadata);
}
failureBlock:^(NSError *error) {
}];
}
}

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原文地址：http://www.cnblogs.com/LiLihongqiang/p/5592713.html

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