设置使用iPhone相机拍摄的图像的类型 [英] set type of an image captured using iPhone camera

问题描述

如果我们使用iPhone相机捕获图片，则默认情况下图像将以JPEG格式保存。

If we capture a picture using iPhone camera, image will be saved in JPEG format by default.

我想以其他格式保存捕获的图像，例如PNG 。

I would like to save the image captured in other formats like PNG. Is it possible?

当我们从应用程序中调用iPhone相机时，是否可以通过代码执行此操作，是否可以设置必须在捕获图片后保存的图像类型？我是说要打开相机并在捕获图片之前设置类型？

Is it possible to do this from code when we invoke iPhone camera from our application, can we set image type it has to be saved after capturing picture? I mean to open Camera and set the type before capturing picture?

推荐答案

这将帮助您将图像保存为png类型

This will help you to save image in png type

-(void)imagePickerController:(UIImagePickerController *)picker
  didFinishPickingImage : (UIImage *)image
             editingInfo:(NSDictionary *)editingInfo
{
NSError *error;

NSString  *pngPath = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/%@.png",@"photoname"]];
[UIImagePNGRepresentation(image) writeToFile:pngPath atomically:NO];


NSString *documentsDirectory = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

NSLog(@"Documents directory: %@", [fileManager contentsOfDirectoryAtPath:documentsDirectory error:&error]);

[self dismissModalViewControllerAnimated:YES];
}

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