从UIImagePickerController获取图像

Question

我想从imagepickercontroller获取图片。但我的代码没有任何效果 这是代码..

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];
    imageview.image = [UIImage imageNamed:[info objectForKey:@"UIImagePickerControllerOriginalImage"]];

Answer 1

您可以尝试使用此代码访问从选择器返回的图像

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

    [picker dismissModalViewControllerAnimated:YES];

    UIImage* originalImage = nil;
    originalImage = [info objectForKey:UIImagePickerControllerEditedImage];
    if(originalImage==nil)
    {
        originalImage = [info objectForKey:UIImagePickerControllerOriginalImage];
    }
    if(originalImage==nil)
    {
        originalImage = [info objectForKey:UIImagePickerControllerCropRect];
    }
  //At this point you have the selected image in originalImage
    [self saveImageToDocumentDirectory:originalImage];
}

Answer 2

尝试

imageview.image = (UIImage*) [info objectForKey:UIImagePickerControllerOriginalImage];

Answer 3

对于Swift（3.0），以下内容将安全地打开图像，如果有效，则将其分配给imageView。

guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }
imageView.image = image

Answer 4

试试这个

imageview.image = [info objectForKey:UIImagePickerControllerOriginalImage];