从应用程序和电子邮件中检索保存的图像答案

【问题标题】：Retrieve saved image from app and email从应用程序和电子邮件中检索保存的图像
【发布时间】：2011-05-17 01:05:22
【问题描述】：

用户拍照后，我成功地将图像保存到我的应用程序中。我稍后要做的是，当用户返回应用程序时，我希望他们能够将照片作为附件通过电子邮件发送。我没有任何运气将应用程序中的数据转换为图像，因此我可以将其添加为附件。有人可以指出我正确的方向吗？这是他们拍照后我保存图像的地方。

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


    //here is the image returned

        app.aImage2 = [info objectForKey:UIImagePickerControllerOriginalImage];
        NSData *imageData = UIImagePNGRepresentation( app.aImage2 );
        NSString * savedImageName = [NSString stringWithFormat:@"r%@aImage2.png",app.reportNumber];
        NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
        NSString * documentsDirectory = [paths objectAtIndex:0];
        NSString * dataFilePath;
        dataFilePath = [documentsDirectory stringByAppendingPathComponent:savedImageName];
        [imageData writeToFile:dataFilePath atomically:YES];



    [self dismissModalViewControllerAnimated:YES];


}

这里是我需要附加它的地方。

//this is inside my method that creates an email composer view
    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
    picker.mailComposeDelegate = self; // &lt;- very important step if you want feedbacks on what the user did with your email sheet

    //how would i attach the saved image from above?

【问题讨论】：

标签： iphone ios4 iphone-sdk-3.0

【解决方案1】：

这包括 Mike 在此处提到的代码：

How to add a UIImage in MailComposer Sheet of MFMailComposeViewController

此外，其他部分来自 Sagar Kothari 的回答：

Sending out HTML email with IMG tag from an iPhone App using MFMailComposeViewController class

- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    // Dismiss image picker modal.
    [picker dismissModalViewControllerAnimated:YES];

    if ([MFMailComposeViewController canSendMail]) {
        // Create a string with HTML formatting for the email body.
        NSMutableString *emailBody = [[NSMutableString alloc] initWithString:@"<html><body>"];

        // Add some text to it.
        [emailBody appendString:@"<p>Body text goes here.</p>"];

        // You could repeat here with more text or images, otherwise
        // close the HTML formatting.
        [emailBody appendString:@"</body></html>"];
        NSLog(@"%@", emailBody);

        // Create the mail composer window.
        MFMailComposeViewController *emailDialog = [[MFMailComposeViewController alloc] init];
        emailDialog.mailComposeDelegate = self;

        // Image to insert.
        UIImage *emailImage = [info objectForKey:UIImagePickerControllerOriginalImage];

        if (emailImage != nil) {
            NSData *data = UIImagePNGRepresentation(emailImage);
            [emailDialog addAttachmentData:data mimeType:@"image/png" fileName:@"filename_goes_here.png"];
        }

        [emailDialog setSubject:@"Subject goes here."];
        [emailDialog setMessageBody:emailBody isHTML:YES];

        [self presentModalViewController:emailDialog animated:YES];
        [emailDialog release];
        [emailBody release];
    }
}

【讨论】：

还没有机会测试此代码，但这应该会引导您朝着正确的方向前进。不太确定您的“app.aImage2”是什么（我假设它是您在某处声明的 UIImage ivar）。
是的，抱歉忘记在我的应用程序委托中添加“app.aImage2”是一个全局 UIImage。这行得通！很明显，我必须对其进行一些编辑，但谢谢！
这段代码的大部分似乎是基于 Mike 在此处提供的代码：stackoverflow.com/questions/1527351/…，因此最好给出适当的引用。
另外，其他部分来自 Sagar Kothari 的回答：stackoverflow.com/questions/3289195/…