照片库中图像的分辨率始终为 640 * 480

Question

我正在开发一个模块，我需要从照片库中选择图像并在视图上绘制。但每当我选择大尺寸图像时，它总是返回 640 * 480 缩放图像，因为显示的是小图像。

我已启用 AllowEditing。

谁能帮我找到原始图像的分辨率，以便我可以再次将其缩放到原始图像。

iImagePicker.allowsImageEditing = YES;

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

    [[iImagePicker parentViewController] dismissModalViewControllerAnimated:YES];  
    iIsImageSaved = YES;
    iSavedImage = [editingInfo objectForKey:@"UIImagePickerControllerOriginalImage"];;
    int width,height;
    width = iSavedImage.size.width;
    height = iSavedImage.size.height;

    iApp->ImagePicked(image);
}

谢谢，

萨加尔

Answer 1

您不需要缩小图像，无论如何它都应该可用。检查我对this question 的回答（我认为这是重复的......）

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[为您的代码更新了答案] 您正在使用deprecated method，请尝试使用imagePickerController:didFinishPickingMediaWithInfo: 与UIImagePickerControllerOriginalImage 键代替。

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添加代码sn-p：

-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    UIImage* originalImage = [info objectForKey:UIImagePickerControllerOriginalImage];
    NSLog(@"Original image width: %f and height: %f", originalImage.size.width, originalImage.size.height);

    UIImage* editedImage = [info objectForKey:UIImagePickerControllerEditedImage];
    NSLog(@"Edited image width: %f and height: %f", editedImage.size.width, editedImage.size.height);

    [self dismissModalViewControllerAnimated:YES];
}