是否可以跨2个不同的iOS应用访问数据? [英] Is it possible to access data across 2 different iOS apps?

问题描述

假设我在App1中存储了一些ID数据，并希望在同一设备上的App2中访问它.在平台上可以吗?如果没有，是否有任何解决方法?

Let's say that I store some ID data in App1 and want to access it in App2 on the same device. Is this possible on the platform? Are there any workarounds for this if not?

推荐答案

我的应用与 Instagram 之间的图像共享:

NSURL *instagramURL = [NSURL URLWithString:@"instagram://location?id=1"];
if ([[UIApplication sharedApplication] canOpenURL:instagramURL]) {
    NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"Image.ig"];

    NSData *imageData = UIImagePNGRepresentation(originalImageView.image);
    [imageData writeToFile:savedImagePath atomically:YES];        
    NSURL *imageUrl = [NSURL fileURLWithPath:savedImagePath];

    UIDocumentInteractionController * docController = [[UIDocumentInteractionController alloc] init];
    docController.delegate = self;
    [docController retain];
    docController.UTI = @"com.instagram.photo";
    [docController setURL:imageUrl];
    [docController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
} 

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