使用 UIImageWriteToSavedPhotosAlbum 将图像保存到相机胶卷 [英] Save image to camera roll with UIImageWriteToSavedPhotosAlbum

问题描述

在用户使用相机拍摄照片后，我正在尝试使用按钮将照片保存到相机胶卷，但我不知道为什么我的照片没有保存在照片库中！

I am trying to save a photo with a button to camera roll after user capture a picture with Camera , but I don't know why my picture doesn't save at photo library !!

这是我的代码:

-(IBAction)savePhoto{

    UIImageWriteToSavedPhotosAlbum(img.image,nil, nil, nil);

}

-(IBAction)takePic {

    ipc = [[UIImagePickerController alloc]init];
    ipc.delegate = self;
    ipc.sourceType = UIImagePickerControllerSourceTypeCamera; 
    [self presentModalViewController:ipc animated:YES];

}

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

    img.image = [[info objectForKey:UIImagePickerControllerOriginalImage]retain];
    [[picker parentViewController]dismissModalViewControllerAnimated:YES];
    [picker release];   
}

变量名ipc是UIImagePickerController，img是UIIMageView.

我的问题是什么?

推荐答案

首先确定你调用的是savePhoto.然后你可以添加一个断言来检查图像不为零:

First make sure you are calling savePhoto. Then you can add an assertion to check that the image is not nil:

- (IBAction) savePhoto {
    NSParameterAssert(img.image);
    UIImageWriteToSavedPhotosAlbum(img.image, nil, nil, nil);
}

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