Q:

Setting Dialog ImageView from Activity

Android beginner here.. 
I have a method in my Dialog Fragment to take a photo:
public void takePhoto() {
    Intent takePhoto = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    getActivity().startActivityForResult(takePhoto, REQUEST_TAKE_PHOTO);
}

And I realize that the onActivityResult method has to be in the "fragment calling activity", but how would I set an ImageView in the Dialog from the onActivityResult?
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        // Set an ImageView in my Dialog Fragment
        mImageView.setImageBitmap(imageBitmap);
    }
}

SOLUTION:
Declared this field in my DialogFragment:
private static View layout; 

...

layout = View.inflate(mContext, R.layout.new_post_dialog_layout, null);

Added this method to my DialogFragment:
public static ImageView getDialogImageView() {
    ImageView iv = (ImageView) layout.findViewById(R.id.imagePost);
    return iv;
}

Modified the onActivityResult:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");
        NewPostDialog.getDialogImageView().setImageBitmap(imageBitmap);
    }
}

A:

I would think you could just create a public method in your dialog that gives access to the image view in its custom view. 
So like public ImageView getDialogImageView(), then in your activity just check if the Image view is null and if not then set the image in onActivityResult. You might also want to use a WeakReference to do this so it can be garbage collected when you're done. 

