ios - UIImagePickerController 添加文本到图像

Question

我正在尝试使用 iOS 中的相机捕获图像或视频，并向覆盖在图像底部的黑条添加一些文本。

我正在尝试从用户输入中获取文本，并将图像与图像底部的文本和矩形一起保存:

我该如何解决这个问题？

我目前有这个:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
    // A photo was taken/selected!
    self.image = [info objectForKey:UIImagePickerControllerOriginalImage];
    if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {
        // Save the image!
         UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil);
    }
}
else {
    // A video was taken/selected!
    self.videoFilePath = (__bridge NSString *)([[info objectForKey:UIImagePickerControllerMediaURL] path]);
    if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {

        // Save the video!
         if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(self.videoFilePath)) {
             UISaveVideoAtPathToSavedPhotosAlbum(self.videoFilePath, nil, nil, nil);
         }
    }
}

[self dismissViewControllerAnimated:YES completion:nil]; }

解决这个问题的最佳方法是什么？

Answer 1

您可以在具有黑色(alpha 为 0.5)背景的 UIImageView 上添加 UIView，并在此 UIView 上添加带有文本的 UILabel。