androidx.recyclerview.widget.RecyclerView#setNestedScrollingEnabled ( )源码实例Demo

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_groups);

    Intent intent = getIntent();
    _groups = new TreeSet<>(Collator.getInstance());
    _groups.addAll(intent.getStringArrayListExtra("groups"));

    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
    }

    // set up the recycler view
    _adapter = new GroupAdapter(this);
    RecyclerView slotsView = findViewById(R.id.list_slots);
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    slotsView.setLayoutManager(layoutManager);
    slotsView.setAdapter(_adapter);
    slotsView.setNestedScrollingEnabled(false);

    for (String group : _groups) {
        _adapter.addGroup(group);
    }
}
 

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.fragment_help, container, false);

    RecyclerView recycler = v.findViewById(R.id.recycler);

    recycler.setLayoutManager(new GridLayoutManager(getContext(), 1));
    recycler.setNestedScrollingEnabled(false);

    adapter = new ArrayAdapter(getContext(), R.array.faq);
    recycler.setAdapter(adapter);

    v.findViewById(R.id.community).setOnClickListener(v1 -> startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(COMMUNITY_URL))));

    return v;
}
 

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_college, container, false);
    RecyclerView mRecyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerview);

    List<String> datas = getArguments().getStringArrayList(ARG_SECTION_DATAS);
    LinearLayoutManager mLinearLayoutManager = new LinearLayoutManager(getContext());
    mLinearLayoutManager.setSmoothScrollbarEnabled(true);
    mRecyclerView.setLayoutManager(mLinearLayoutManager);
    mRecyclerView.setHasFixedSize(true);
    mRecyclerView.setNestedScrollingEnabled(false);
    MyAdapter mMyAdapter = new MyAdapter(datas);
    mRecyclerView.setAdapter(mMyAdapter);
    return rootView;
}
 

@Override
public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
  recyclerView.setNestedScrollingEnabled(false);
  ViewGroup.LayoutParams params = recyclerView.getLayoutParams();
  params.height = (int) (recyclerView.getResources().getDisplayMetrics().heightPixels * 0.80);
  recyclerView.setLayoutParams(params);
  recyclerView.setHasFixedSize(true);
}
 

@Override
public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
    super.onAttachedToRecyclerView(recyclerView);

    mRecyclerView = recyclerView;
    recyclerView.setNestedScrollingEnabled(false);
}
 

private void initializeResultList() {
  RecyclerView recyclerView = findViewById(R.id.rv_search_results);
  RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext());
  layoutManager.setAutoMeasureEnabled(true);
  recyclerView.addItemDecoration(new ResultItemDecoration(getContext()));
  recyclerView.setLayoutManager(layoutManager);
  recyclerView.setNestedScrollingEnabled(false);
  recyclerView.setAdapter(adapter);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_select_entries);

    ActionBar bar = getSupportActionBar();
    bar.setHomeAsUpIndicator(R.drawable.ic_close);
    bar.setDisplayHomeAsUpEnabled(true);

    _adapter = new ImportEntriesAdapter();
    RecyclerView entriesView = findViewById(R.id.list_entries);
    entriesView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            onScroll(dx, dy);
        }
    });

    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    entriesView.setLayoutManager(layoutManager);
    entriesView.setAdapter(_adapter);
    entriesView.setNestedScrollingEnabled(false);

    Intent intent = getIntent();
    List<ImportEntry> entries = (ArrayList<ImportEntry>) intent.getSerializableExtra("entries");
    List<DatabaseImporterEntryException> errors = (ArrayList<DatabaseImporterEntryException>) intent.getSerializableExtra("errors");

    for (ImportEntry entry : entries) {
        _adapter.addEntry(entry);
    }

    if (errors.size() > 0) {
        showErrorDialog(errors);
    }

    FloatingActionButton fabMenu = findViewById(R.id.fab);
    fabMenu.setOnClickListener(v -> returnSelectedEntries());
    _fabScrollHelper = new FabScrollHelper(fabMenu);
}
 

MaterialAboutListViewHolder(View view) {
    super(view);
    cardView = view.findViewById(R.id.mal_list_card);
    title = (TextView) view.findViewById(R.id.mal_list_card_title);
    recyclerView = (RecyclerView) view.findViewById(R.id.mal_card_recyclerview);
    adapter = new MaterialAboutItemAdapter(viewTypeManager);
    recyclerView.setLayoutManager(new LinearLayoutManager(context));
    recyclerView.setAdapter(adapter);
    recyclerView.setNestedScrollingEnabled(false);
}
 

private void setup(@ColorInt int zebraColor) {
    FrameLayout layout = (FrameLayout) LayoutInflater.from(getContext()).inflate(R.layout.hoodlib_view_page, this, true);
    setNestedScrollingEnabled(true);
    mRecyclerView = (RecyclerView) layout.findViewById(R.id.recycler_view);
    mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
    mRecyclerView.setNestedScrollingEnabled(true);
    mRecyclerView.setAdapter(new DebugEntriesAdapter(page, zebraColor));
}
 

@OnMount
static void onMount(
    ComponentContext c,
    SectionsRecyclerView sectionsRecycler,
    @Prop Binder<RecyclerView> binder,
    @Prop(optional = true) boolean hasFixedSize,
    @Prop(optional = true) boolean clipToPadding,
    @Prop(optional = true) int leftPadding,
    @Prop(optional = true) int rightPadding,
    @Prop(optional = true) int topPadding,
    @Prop(optional = true) int bottomPadding,
    @Prop(optional = true, resType = ResType.COLOR) @Nullable
        Integer refreshProgressBarBackgroundColor,
    @Prop(optional = true, resType = ResType.COLOR) int refreshProgressBarColor,
    @Prop(optional = true) boolean clipChildren,
    @Prop(optional = true) boolean nestedScrollingEnabled,
    @Prop(optional = true) int scrollBarStyle,
    @Prop(optional = true) RecyclerView.ItemDecoration itemDecoration,
    @Prop(optional = true) boolean horizontalFadingEdgeEnabled,
    @Prop(optional = true) boolean verticalFadingEdgeEnabled,
    @Prop(optional = true, resType = ResType.DIMEN_SIZE) int fadingEdgeLength,
    @Prop(optional = true) @IdRes int recyclerViewId,
    @Prop(optional = true) int overScrollMode,
    @Prop(optional = true, isCommonProp = true) CharSequence contentDescription,
    @Prop(optional = true) ItemAnimator itemAnimator) {
  final RecyclerView recyclerView = sectionsRecycler.getRecyclerView();

  if (recyclerView == null) {
    throw new IllegalStateException(
        "RecyclerView not found, it should not be removed from SwipeRefreshLayout");
  }
  recyclerView.setContentDescription(contentDescription);
  recyclerView.setHasFixedSize(hasFixedSize);
  recyclerView.setClipToPadding(clipToPadding);
  sectionsRecycler.setClipToPadding(clipToPadding);
  ViewCompat.setPaddingRelative(
      recyclerView, leftPadding, topPadding, rightPadding, bottomPadding);
  recyclerView.setClipChildren(clipChildren);
  sectionsRecycler.setClipChildren(clipChildren);
  recyclerView.setNestedScrollingEnabled(nestedScrollingEnabled);
  sectionsRecycler.setNestedScrollingEnabled(nestedScrollingEnabled);
  recyclerView.setScrollBarStyle(scrollBarStyle);
  recyclerView.setHorizontalFadingEdgeEnabled(horizontalFadingEdgeEnabled);
  recyclerView.setVerticalFadingEdgeEnabled(verticalFadingEdgeEnabled);
  recyclerView.setFadingEdgeLength(fadingEdgeLength);
  // TODO (t14949498) determine if this is necessary
  recyclerView.setId(recyclerViewId);
  recyclerView.setOverScrollMode(overScrollMode);
  if (refreshProgressBarBackgroundColor != null) {
    sectionsRecycler.setProgressBackgroundColorSchemeColor(refreshProgressBarBackgroundColor);
  }
  sectionsRecycler.setColorSchemeColors(refreshProgressBarColor);

  if (itemDecoration != null) {
    recyclerView.addItemDecoration(itemDecoration);
  }

  sectionsRecycler.setItemAnimator(
      itemAnimator != RecyclerSpec.itemAnimator ? itemAnimator : new NoUpdateItemAnimator());

  binder.mount(recyclerView);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_slots);
    _edited = false;

    ActionBar bar = getSupportActionBar();
    bar.setHomeAsUpIndicator(R.drawable.ic_close);
    bar.setDisplayHomeAsUpEnabled(true);

    findViewById(R.id.button_add_biometric).setOnClickListener(view -> {
        if (BiometricsHelper.isAvailable(this)) {
            BiometricSlotInitializer initializer = new BiometricSlotInitializer(SlotManagerActivity.this, new RegisterBiometricsListener());
            BiometricPrompt.PromptInfo info = new BiometricPrompt.PromptInfo.Builder()
                    .setTitle(getString(R.string.add_biometric_slot))
                    .setNegativeButtonText(getString(android.R.string.cancel))
                    .build();
            initializer.authenticate(info);
        }
    });

    findViewById(R.id.button_add_password).setOnClickListener(view -> {
        Dialogs.showSetPasswordDialog(this, new PasswordListener());
    });

    // set up the recycler view
    _adapter = new SlotAdapter(this);
    RecyclerView slotsView = findViewById(R.id.list_slots);
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    slotsView.setLayoutManager(layoutManager);
    slotsView.setAdapter(_adapter);
    slotsView.setNestedScrollingEnabled(false);

    // load the slots and masterKey
    _creds = (VaultFileCredentials) getIntent().getSerializableExtra("creds");
    for (Slot slot : _creds.getSlots()) {
        _adapter.addSlot(slot);
    }

    updateBiometricsButton();
}