Examples with PagerSnapHelper android.support.v7.widget.PagerSnapHelper used on opensource projects

Example 1 with PagerSnapHelper

use of android.support.v7.widget.PagerSnapHelper in project Shuttle by timusus.

the class QueuePagerFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_queue_pager, container, false);
    unbinder = ButterKnife.bind(this, rootView);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getContext(), LinearLayoutManager.HORIZONTAL, false);
    if (ShuttleUtils.isLandscape()) {
        textProtectionScrim.setVisibility(View.GONE);
    }
    recyclerView.setNestedScrollingEnabled(false);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(viewModelAdapter);
    SnapHelper snapHelper = new PagerSnapHelper() {

        @Override
        public int findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY) {
            int snapPosition = super.findTargetSnapPosition(layoutManager, velocityX, velocityY);
            if (snapPosition < viewModelAdapter.items.size()) {
                Observable.defer(() -> {
                    if (MusicUtils.getQueuePosition() != snapPosition) {
                        MusicUtils.setQueuePosition(snapPosition);
                    }
                    return Observable.empty();
                }).delaySubscription(150, TimeUnit.MILLISECONDS).subscribeOn(Schedulers.io()).subscribe();
            }
            return snapPosition;
        }
    };
    snapHelper.attachToRecyclerView(recyclerView);
    recyclerView.addOnScrollListener(new RecyclerViewPreloader<>(new ListPreloader.PreloadModelProvider<QueuePagerItemView>() {

        @Override
        public List<QueuePagerItemView> getPreloadItems(int position) {
            QueuePagerItemView queuePagerItemView = (QueuePagerItemView) viewModelAdapter.items.get(position);
            return Collections.singletonList(queuePagerItemView);
        }

        @Override
        public GenericRequestBuilder getPreloadRequestBuilder(QueuePagerItemView item) {
            return requestManager.load(item.song).diskCacheStrategy(DiskCacheStrategy.SOURCE).error(PlaceholderProvider.getInstance().getPlaceHolderDrawable(item.song.name, true));
        }
    }, (item, adapterPosition, perItemPosition) -> imageSize, 3));
    recyclerView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {

        @Override
        public boolean onPreDraw() {
            // This null check doesn't make sense to me, but there was an NPE here..
            if (recyclerView != null) {
                imageSize = new int[] { recyclerView.getWidth(), recyclerView.getHeight() };
                recyclerView.getViewTreeObserver().removeOnPreDrawListener(this);
            }
            return false;
        }
    });
    return rootView;
}

Example 2 with PagerSnapHelper

use of android.support.v7.widget.PagerSnapHelper in project RecyclerBanner by renjianan.

the class RecyclerViewBannerBase method initView.

protected void initView(Context context, AttributeSet attrs) {
    TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RecyclerViewBannerBase);
    showIndicator = a.getBoolean(R.styleable.RecyclerViewBannerBase_showIndicator, true);
    autoPlayDuration = a.getInt(R.styleable.RecyclerViewBannerBase_interval, 4000);
    isAutoPlaying = a.getBoolean(R.styleable.RecyclerViewBannerBase_autoPlaying, true);
    mSelectedDrawable = a.getDrawable(R.styleable.RecyclerViewBannerBase_indicatorSelectedSrc);
    mUnselectedDrawable = a.getDrawable(R.styleable.RecyclerViewBannerBase_indicatorUnselectedSrc);
    if (mSelectedDrawable == null) {
        // 绘制默认选中状态图形
        GradientDrawable selectedGradientDrawable = new GradientDrawable();
        selectedGradientDrawable.setShape(GradientDrawable.OVAL);
        selectedGradientDrawable.setColor(Color.RED);
        selectedGradientDrawable.setSize(dp2px(5), dp2px(5));
        selectedGradientDrawable.setCornerRadius(dp2px(5) / 2);
        mSelectedDrawable = new LayerDrawable(new Drawable[] { selectedGradientDrawable });
    }
    if (mUnselectedDrawable == null) {
        // 绘制默认未选中状态图形
        GradientDrawable unSelectedGradientDrawable = new GradientDrawable();
        unSelectedGradientDrawable.setShape(GradientDrawable.OVAL);
        unSelectedGradientDrawable.setColor(Color.GRAY);
        unSelectedGradientDrawable.setSize(dp2px(5), dp2px(5));
        unSelectedGradientDrawable.setCornerRadius(dp2px(5) / 2);
        mUnselectedDrawable = new LayerDrawable(new Drawable[] { unSelectedGradientDrawable });
    }
    indicatorMargin = a.getDimensionPixelSize(R.styleable.RecyclerViewBannerBase_indicatorSpace, dp2px(4));
    int marginLeft = a.getDimensionPixelSize(R.styleable.RecyclerViewBannerBase_indicatorMarginLeft, dp2px(16));
    int marginRight = a.getDimensionPixelSize(R.styleable.RecyclerViewBannerBase_indicatorMarginRight, dp2px(0));
    int marginBottom = a.getDimensionPixelSize(R.styleable.RecyclerViewBannerBase_indicatorMarginBottom, dp2px(11));
    int g = a.getInt(R.styleable.RecyclerViewBannerBase_indicatorGravity, 0);
    int gravity;
    if (g == 0) {
        gravity = GravityCompat.START;
    } else if (g == 2) {
        gravity = GravityCompat.END;
    } else {
        gravity = Gravity.CENTER;
    }
    int o = a.getInt(R.styleable.RecyclerViewBannerBase_orientation, 0);
    int orientation = 0;
    if (o == 0) {
        orientation = LinearLayoutManager.HORIZONTAL;
    } else if (o == 1) {
        orientation = LinearLayoutManager.VERTICAL;
    }
    a.recycle();
    // recyclerView部分
    mRecyclerView = new RecyclerView(context);
    new PagerSnapHelper().attachToRecyclerView(mRecyclerView);
    mLayoutManager = getLayoutManager(context, orientation);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {

        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            onBannerScrolled(recyclerView, dx, dy);
        }

        @Override
        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
            onBannerScrollStateChanged(recyclerView, newState);
        }
    });
    LayoutParams vpLayoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
    addView(mRecyclerView, vpLayoutParams);
    // 指示器部分
    indicatorContainer = new RecyclerView(context);
    LinearLayoutManager indicatorLayoutManager = new LinearLayoutManager(context, orientation, false);
    indicatorContainer.setLayoutManager(indicatorLayoutManager);
    indicatorAdapter = new IndicatorAdapter();
    indicatorContainer.setAdapter(indicatorAdapter);
    LayoutParams params = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    params.gravity = Gravity.BOTTOM | gravity;
    params.setMargins(marginLeft, 0, marginRight, marginBottom);
    addView(indicatorContainer, params);
    if (!showIndicator) {
        indicatorContainer.setVisibility(GONE);
    }
}

Example 3 with PagerSnapHelper

use of android.support.v7.widget.PagerSnapHelper in project Andela-Med-Manager by jumaallan.

the class MainActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
    User user = new User(Long.valueOf("1"), "Data Binding", "User");
    binding.setUser(user);
    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    ButterKnife.bind(this);
    profileDialog = ProfileDialog.newInstance(((dialog, which) -> logout()));
    calendar = Calendar.getInstance();
    simpleDateFormat = new SimpleDateFormat("EEEE, MMM d, yyyy");
    String currentDate = simpleDateFormat.format(calendar.getTime());
    date.setText(currentDate);
    menuViewList = getMenuOptions();
    recyclerView.setLayoutManager(new GridLayoutManager(this, 2));
    ItemOffsetDecoration itemDecoration = new ItemOffsetDecoration(this, R.dimen.item_offset);
    recyclerView.addItemDecoration(itemDecoration);
    MainDashboardAdapter mainDashboardAdapter = new MainDashboardAdapter(this, menuViewList, (v, position) -> {
        MenuView role = menuViewList.get(position);
        String menuName = role.getName();
        switch(menuName) {
            case "Add Medicine":
                Intent addMedicine = new Intent(getApplicationContext(), AddMedicineActivity.class);
                startActivity(addMedicine);
                break;
            case "Profile":
                break;
            case "Reminders":
                break;
            case "Monthly Intake":
                break;
            default:
                Toast.makeText(MainActivity.this, "Sorry, It's Under development", Toast.LENGTH_SHORT).show();
                break;
        }
    });
    recyclerView.setAdapter(mainDashboardAdapter);
    DailyMedicineStatisticsAdapter dailyMedicineStatisticsAdapter = new DailyMedicineStatisticsAdapter(this, new ArrayList<>());
    recyclerViewDailyMedicineStatistics.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
    // add pager behavior
    PagerSnapHelper snapHelper = new PagerSnapHelper();
    snapHelper.attachToRecyclerView(recyclerViewDailyMedicineStatistics);
    // pager indicator
    recyclerViewDailyMedicineStatistics.addItemDecoration(new CirclePagerIndicatorDecoration());
    recyclerViewDailyMedicineStatistics.setAdapter(dailyMedicineStatisticsAdapter);
// MedicineViewModel medicineViewModel = ViewModelProviders.of(this).get(MedicineViewModel.class);
// medicineViewModel.getMedicineList().observe(MainActivity.this, dailyMedicineStatisticsAdapter::addItems);
}