VerticalGridPresenter

public VerticalGridPresenter()

Constructs a VerticalGridPresenter with defaults. Uses ZOOM_FACTOR_LARGE for focus zooming and enabled dimming on focus.

public VerticalGridPresenter(int focusZoomFactor)

Constructs a VerticalGridPresenter with the given parameters.

public VerticalGridPresenter(int focusZoomFactor, boolean useFocusDimmer)

Constructs a VerticalGridPresenter with the given parameters.

public final boolean areChildRoundedCornersEnabled()

Returns true if rounded corners are enabled for children of this row.

public final void enableChildRoundedCorners(boolean enable)

Enables or disabled rounded corners on children of this row. Supported on Android SDK >= L.

public final int getFocusZoomFactor()

Returns the zoom factor used for focus highlighting.

public final boolean getKeepChildForeground()

Returns true if keeps foreground of child of this grid, the foreground will not be used for overlay color. Default value is true.

public int getNumberOfColumns()

Returns the number of columns in the vertical grid.

public final @Nullable OnItemViewClickedListener getOnItemViewClickedListener()

Returns the item clicked listener.

public final @Nullable OnItemViewSelectedListener getOnItemViewSelectedListener()

Returns the item selected listener.

public final boolean getShadowEnabled()

Returns true if child shadow is enabled. This is not only for enable/disable default shadow implementation but also subclass must respect this flag.

public final boolean isFocusDimmerUsed()

Returns true if the focus dimmer is used for focus highlighting; false otherwise.

public boolean isUsingDefaultShadow()

Default implementation returns true if SDK version >= 21, shadow (either static or z-order based) will be applied to each individual child of VerticalGridView. Subclass may return false to disable default implementation of shadow and provide its own.

public boolean isUsingZOrder(@NonNull Context context)

Returns true if SDK >= L, where Z shadow is enabled so that Z order is enabled on each child of vertical grid. If subclass returns false in isUsingDefaultShadow() and does not use Z-shadow on SDK >= L, it should override isUsingZOrder() return false.

public void onBindViewHolder(
    @NonNull Presenter.ViewHolder viewHolder,
    @Nullable Object item
)

Binds a View to an item.

public final @NonNull VerticalGridPresenter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent)

Creates a new View.

public void onUnbindViewHolder(@NonNull Presenter.ViewHolder viewHolder)

Unbinds a View from an item. Any expensive references may be released here, and any fields that are not bound for every item should be cleared here.

public void setEntranceTransitionState(
    @NonNull VerticalGridPresenter.ViewHolder holder,
    boolean afterEntrance
)

Changes the visibility of views. The entrance transition will be run against the views that change visibilities. This method is called by the fragment, it should not be called directly by the application.

public final void setKeepChildForeground(boolean keep)

Set if keeps foreground of child of this grid, the foreground will not be used for overlay color. Default value is true.

public void setNumberOfColumns(int numColumns)

Sets the number of columns in the vertical grid.

public final void setOnItemViewClickedListener(
    @Nullable OnItemViewClickedListener listener
)

Sets the item clicked listener. OnItemViewClickedListener will override View.OnClickListener that item presenter sets during onCreateViewHolder. So in general, developer should choose one of the listeners but not both.

public final void setOnItemViewSelectedListener(
    @Nullable OnItemViewSelectedListener listener
)

Sets the item selected listener. Since this is a grid the row parameter is always null.

public final void setShadowEnabled(boolean enabled)

Enable or disable child shadow. This is not only for enable/disable default shadow implementation but also subclass must respect this flag.

protected @NonNull VerticalGridPresenter.ViewHolder createGridViewHolder(@NonNull ViewGroup parent)

Subclass may override this to inflate a different layout.

protected @NonNull ShadowOverlayHelper.Options createShadowOverlayOptions()

Create ShadowOverlayHelper Options. Subclass may override. e.g. return new ShadowOverlayHelper.Options().roundedCornerRadius(10);

protected void initializeGridViewHolder(@NonNull VerticalGridPresenter.ViewHolder vh)

Called after a VerticalGridPresenter.ViewHolder is created. Subclasses may override this method and start by calling super.initializeGridViewHolder(ViewHolder).