Tag: nsdocument

从文档目录中删除指定的文件: 我想从我的应用程序文档目录中删除一个图像。我写的删除图像的代码是： -(void)removeImage:(NSString *)fileName { fileManager = [NSFileManager defaultManager]; paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); documentsPath = [paths objectAtIndex:0]; filePath = [documentsPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@", fileName]]; [fileManager removeItemAtPath:filePath error:NULL]; UIAlertView *removeSuccessFulAlert=[[UIAlertView alloc]initWithTitle:@"Congratulation:" message:@"Successfully removed" delegate:self cancelButtonTitle:@"Close" otherButtonTitles:nil]; [removeSuccessFulAlert show]; } 它的部分工作。此代码从目录中删除文件，但是当我检查目录中的内容时，它仍然在那里显示图像名称。我想从目录中彻底删除该文件。我应该在代码中做些什么改变？谢谢

将图像保存到文档目录并检索电子邮件附件: 我无法找出NSBundle和DocumentDirectory的数据，我有一个相机图片“ imageView ”，我保存到NSDocumentDirectoy ，然后想要检索它附加到一个电子邮件，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]; } 这里是新的获取数据代码： NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; […]