진행 중인 경고 대화 상자가 닫히거나 취소되지 않음 (Alertdialog running ongoing dosen't dismiss or cancel)

문제 설명

진행 중인 경고 대화 상자가 닫히거나 취소되지 않음 (Alertdialog running ongoing dosen't dismiss or cancel)

이 answer에 따르면 다음 10개의 게시물이 로드될 때까지 대화 상자를 표시하고 싶습니다. 그래서 정적 alertDialog 메소드를 만들었습니다. 내 앱의 다른 위치에서 사용하지만 문제는 대화 상자가 취소되거나 해제되지 않는다는 것입니다.

setProgressDialog Utils 클래스에서

 public static AlertDialog setProgressDialog(Context context) {

        int llPadding = 30;
        LinearLayout ll = new LinearLayout(context);
        ll.setOrientation(LinearLayout.HORIZONTAL);
        ll.setPadding(llPadding, llPadding, llPadding, llPadding);
        ll.setGravity(Gravity.CENTER);
        LinearLayout.LayoutParams llParam = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT);
        llParam.gravity = Gravity.CENTER;
        ll.setLayoutParams(llParam);

        ProgressBar progressBar = new ProgressBar(context);
        progressBar.setIndeterminate(true);
        progressBar.setPadding(0, 0, llPadding, 0);
        progressBar.setLayoutParams(llParam);

        llParam = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        llParam.gravity = Gravity.CENTER;
        TextView tvText = new TextView(context);
        tvText.setText("Loading ...");
        tvText.setTextColor(context.getResources().getColor(R.color.black));
        tvText.setTextSize(20);
        tvText.setLayoutParams(llParam);

        ll.addView(progressBar);
        ll.addView(tvText);

        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setCancelable(false);
        builder.setView(ll);

        AlertDialog dialog = builder.create();
        dialog.show();
        Window window = dialog.getWindow();
        if (window != null) {
            WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
            layoutParams.copyFrom(dialog.getWindow().getAttributes());
            layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT;
            layoutParams.height = LinearLayout.LayoutParams.WRAP_CONTENT;
            dialog.getWindow().setAttributes(layoutParams);
        }
        return dialog;
    }

더 로드 버튼을 클릭할 때 HomeFragment에서 사용했습니다.

binding.loadMoreBtn.setOnClickListener(view ‑> {

            Utils.setProgressDialog(requireContext());

            if (Utils.hasNetworkAccess(requireContext())) {
                postViewModel.getPosts();
//                Log.w(TAG, "loadMoreBtn: "+dialog.isShowing() );
            } else {
                postViewModel.getAllItemsFromDataBase.getValue();
            }
            Utils.setProgressDialog(requireContext()).cancel();
            Utils.setProgressDialog(requireContext()).dismiss();

        });

추신: AlertDialog 대화 상자도 만들려고 했습니다. = 유틸리티.setProgressDialog(requireContext()); 대신 dialod.show() 메소드를 직접 호출하고 getPosts 후에 메소드를 취소하거나 해제하지만 dosen' 등장

참조 솔루션

방법 1:

binding.loadMoreBtn.setOnClickListener(view ‑> {

        Utils.setProgressDialog(requireContext());

        if (Utils.hasNetworkAccess(requireContext())) {
            postViewModel.getPosts(); //                Log.w(TAG, "loadMoreBtn: "+dialog.isShowing() );
        } else {
            postViewModel.getAllItemsFromDataBase.getValue();
        }
        Utils.setProgressDialog(requireContext()).cancel();
        Utils.setProgressDialog(requireContext()).dismiss();

    });

Here you invoked the static method Utils.setProgressDialog() multiple times; and each time it is called, it returns back a brand new dialog, so you'd dismiss a dialog that is not displayed on the screen.

Instead, you need to store the dialog that is returned from the first call to the method into a variable:

AlertDialog dialog = Utils.setProgressDialog(requireContext());

And then call dismiss on that dialog version: dialog.dismiss() or dialog.cancel() whenever you need to dismiss it.

방법 2:

I fixed it by adding a flag boolean in the viewmodel to detect loading state

public final MutableLiveData<Boolean> isLoading = new MutableLiveData<>();

and use it in getPosts() like this

public void getPosts() {
        Log.e(TAG, finalURL.getValue());

        isLoading.setValue(true);
        repository.remoteDataSource.getPostList(finalURL.getValue())
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Response<PostList>>() {
                    @Override
                    public void onSubscribe(@NonNull Disposable d) {

                    }

                    @Override
                    public void onNext(@NonNull Response<PostList> postListResponse) {

                        if (postListResponse.isSuccessful()) {
                            if (postListResponse.body() != null
                                    && postListResponse.body().getNextPageToken() != null) {
                                Log.e(TAG, postListResponse.body().getNextPageToken());
                                token.setValue(postListResponse.body().getNextPageToken());
                                isLoading.setValue(false);
                            }
                            postListMutableLiveData.setValue(postListResponse.body());

and finally in the fragment on button click

binding.loadMoreBtn.setOnClickListener(view ‑> {
            AlertDialog dialog = Utils.setProgressDialog(requireContext());

            postViewModel.isLoading.observe(getViewLifecycleOwner(), isLoading ‑> {
                if (isLoading) {
                    dialog.show();
                } else {
                    dialog.dismiss();
                }
            });

            if (Utils.hasNetworkAccess(requireContext())) {
                postViewModel.getPosts();
                Log.w(TAG, "loadMoreBtn: " + dialog.isShowing());
            } else {
                postViewModel.isLoading.postValue(true);
                postViewModel.getAllItemsFromDataBase.getValue();
                postViewModel.isLoading.postValue(false);
            }

        });

(by Dr Mido、Zain、Dr Mido)

참조 문서

1. Alertdialog running ongoing dosen't dismiss or cancel (CC BY‑SA 2.5/3.0/4.0)