将照片导出到Instagram

Question

我正在尝试使用以下代码将照片从我的应用程序导出到Instagram:

// Capture Screenshot
UIGraphicsBeginImageContextWithOptions(self.view.frame.size,self.view.opaque,0.0);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImageJPEGRepresentation(image, 1.0);
NSString  *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/test.igo"];
NSURL *igImageHookFile = [[NSURL alloc] initWithString:[[NSString alloc] initWithFormat:@"file://%@", jpgPath]];
dic = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:igImageHookFile]];
dic.UTI = @"com.instagram.photo";
dic.annotation = [NSDictionary dictionaryWithObject:@"my caption" forKey:@"InstagramCaption"];
NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
if ([[UIApplication sharedApplication] canOpenURL:instagramURL]) {
  [[UIApplication sharedApplication] openURL:instagramURL];
} else {
  NSLog(@"No Instagram Found");
}

但它没有用.它崩溃时出现以下错误:

2013-01-19 20:40:41.948 Ayat [12648:c07] *由于未捕获异常'NSInvalidArgumentException'而终止应用程序,原因:'* - [NSURL initFileURLWithPath:]:nil string parameter'

我不确定我是否正确:

1-保存jpgpath作为我拍摄的截图.

2-将"dic"文档传递给Instagram.

Answer 1

在我的应用程序中,我还将照片导出到Instagram.(图片大小必须大于612x612)尝试此代码:

-(void)shareImageOnInstagram:(UIImage*)shareImage
{
    //Remember Image must be larger than 612x612 size if not resize it.   

    NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];

    if([[UIApplication sharedApplication] canOpenURL:instagramURL])
    {
        NSString *documentDirectory=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
        NSString *saveImagePath=[documentDirectory stringByAppendingPathComponent:@"Image.ig"];
        NSData *imageData=UIImagePNGRepresentation(shareImage);
        [imageData writeToFile:saveImagePath atomically:YES];

        NSURL *imageURL=[NSURL fileURLWithPath:saveImagePath];

        UIDocumentInteractionController *docController=[[UIDocumentInteractionController alloc]init];
        docController.delegate=self;
        [docController retain];
        docController.UTI=@"com.instagram.photo";

        docController.annotation=[NSDictionary dictionaryWithObjectsAndKeys:@"Image Taken via @App",@"InstagramCaption", nil];

        [docController setURL:imageURL];


        [docController presentOpenInMenuFromBarButtonItem:self.navigationItem.rightBarButtonItem animated:YES];  //Here try which one is suitable for u to present the doc Controller. if crash occurs

    }
    else
    {
        NSLog (@"Instagram not found");

    }

}

我希望这会对你有所帮助.