方向更改后 DialogFragment 上的 AddView 不起作用

Question

我有一个 activity 需要触发 4 个不同的 DialogFragments，我在其中触发一个意图从相机或画廊获取图像。我可以保留片段状态并继续观察 "onActivityResult" 并将其发送到 dialogfragmentx 但是当他们重新创建并且我尝试再次显示我从画廊获得的图像时，当我使用 "addView"线性布局它什么都不做。这是我来自 activity:

的代码

private DFrag_room frag_room;
private DFrag_terrace frag_terrace;
private DFrag_garden frag_garden;
private DFrag_parking frag_parking;

@Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        if (frag_room != null) {
            getSupportFragmentManager().putFragment(outState, "fragment_room", frag_room);
        }

        if (frag_terrace != null) {
            getSupportFragmentManager().putFragment(outState, "fragment_terrace", frag_terrace);
        }

        if (frag_garden != null) {
            getSupportFragmentManager().putFragment(outState, "fragment_garden", frag_garden);
        }

        if (frag_parking != null) {
            getSupportFragmentManager().putFragment(outState, "fragment_parking", frag_parking);
        }
    }

    @Override
    public void onRestoreInstanceState(Bundle inState){
        FragmentManager fm = getSupportFragmentManager();
        frag_room = (DFrag_room) fm.getFragment(inState, "fragment_room");
        frag_terrace = (DFrag_terrace) fm.getFragment(inState, "fragment_terrace");
        frag_garden = (DFrag_garden) fm.getFragment(inState, "fragment_garden");
        frag_parking = (DFrag_parking) fm.getFragment(inState, "fragment_parking");
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (frag_room != null) {
            frag_room.onActivityResult(requestCode, resultCode, data);
        }

        if (frag_terrace != null) {
            frag_terrace.onActivityResult(requestCode, resultCode, data);
        }

        if (frag_garden != null) {
            frag_garden.onActivityResult(requestCode, resultCode, data);
        }

        if (frag_parking != null) {
            frag_parking.onActivityResult(requestCode, resultCode, data);
        }
    }

以及其中一个对话片段的代码（每个对话片段的过程都相同）

私有线性布局layout_images；私人 ImageView img_add_image;

private File photoFile;
private ArrayList<Uri> images;

public DFrag_room() {
}

public interface DFrag_roomListener {
    void onFinishRoom();
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.dfrag_room, container);
    layout_images = (LinearLayout) view.findViewById(R.id.dfrag_room_imgs_layout);
    img_add_image = (ImageView) view.findViewById(R.id.dfrag_room_img_add_img);
    img_add_image.setOnClickListener(this);
    if (savedInstanceState != null) {
        images = (ArrayList<Uri>) savedInstanceState.getSerializable("images");
        for (int i = 0; i < images.size(); i++) {
            addImage(images.get(i));
        }
    }

    setRetainInstance(true);
    return view;
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    Dialog dialog = super.onCreateDialog(savedInstanceState);
    dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    return dialog;
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState); // <-- must call this if you want to retain dialogFragment upon rotation
    outState.putSerializable("images", images);
}

@Override
public void onDestroyView() {
    if (getDialog() != null && getRetainInstance())
        getDialog().setDismissMessage(null);
    super.onDestroyView();
}

@Override
public void onActivityResult(int reqCode, int resCode, Intent data) {
    switch (reqCode) {
        case CONF.REQ_PHOTO:
            if (resCode == Activity.RESULT_OK) {
                if ((photoFile != null)) {
                    Uri img = Uri.fromFile(photoFile);
                    images.add(img);
                    addImage(img);
                }
            }
            break;

        case CONF.REQ_GALLERY:
            if (resCode == Activity.RESULT_OK) {
                images.add(data.getData());
                addImage(data.getData());
            }
            break;
    }

    super.onActivityResult(resCode, resCode, data);
}

public void addImage(Uri img_uri) {
    int margin = getResources().getDimensionPixelOffset(R.dimen.padding_x_small);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(img_add_image.getWidth(), img_add_image.getHeight());
    params.setMargins(0, 0, margin, 0);

    RoundedImageView new_img = new RoundedImageView(getActivity());
    new_img.setLayoutParams(params);
    new_img.setScaleType(ImageView.ScaleType.CENTER_CROP);
    new_img.setBackgroundResource(R.drawable.bg_white_stroke);
    new_img.setCornerRadius((float) 6);
    Glide.with(getActivity()).load(img_uri).thumbnail(0.8f).into(new_img);
    layout_images.addView(new_img, 0);
}

当我从 intent 中获取图像时它工作正常，但是当我从保存的 uris 列表 (onCreateView) 中获取它时它不起作用

编辑：抱歉，应用程序没有崩溃，我在布局中看不到图像，它调用 "addImage" 但我看不到图像。

Answer 1

已解决，我尝试创建一个宽度为 0 高度为 0 的图像视图，因为我是通过 onCreate 方法创建的，其中 img_add_image.getWidth() 为 0。

方向更改后 DialogFragment 上的 AddView 不起作用

AddView on DialogFragment after orientation change not working

android

savestate

fragment

dialogfragment