将图像保存到Documents目录并检索电子邮件附件 [英] Saving image to Documents directory and retrieving for email attachment

问题描述

我无法找出 NSBundle & DocumentDirectory数据，我有一个相机图片image，我保存到 NSDocumentDirectoy 然后想要检索它附加到一个电子邮件，

I having trouble figuring out NSBundle & DocumentDirectory data, I have a Camera Picture "imageView" that I'm saving to the NSDocumentDirectoy and then want to retrieve it for attaching to an email,

这里的保存代码：

- (IBAction)saveImage {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:@"savedImage.png"];
    UIImage *image = imageView.image; // imageView is my image from camera
    NSData *imageData = UIImagePNGRepresentation(image);
    [imageData writeToFile:savedImagePath atomically:NO];   
}

这是新获取的数据代码：

Here is the new getting data code:

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *appFile = [documentsDirectory stringByAppendingPathComponent:@"savedImage.png"];
    NSData *myData = [[[NSData alloc] initWithContentsOfFile:appFile] autorelease];
    [picker addAttachmentData:myData mimeType:@"image/png" fileName:@"savedImage"];

推荐答案

- (IBAction)getImage {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,     NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *getImagePath = [documentsDirectory stringByAppendingPathComponent:@"savedImage.png"];
    UIImage *img = [UIImage imageWithContentsOfFile:getImagePath];
}

这应该让你开始！

这篇关于将图像保存到Documents目录并检索电子邮件附件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！