android.support.design.internal.BottomNavigationItemView Java Examples

/**
     * get the current checked item position
     *
     * @return index of item, start from 0.
     */
    public int getCurrentItem() {
        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

        2. get field in mMenuView
        private BottomNavigationItemView[] mButtons;

        3. get menu and traverse it to get the checked one
         */

        // 1. get mMenuView
//        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // 3. get menu and traverse it to get the checked one
        Menu menu = getMenu();
        for (int i = 0; i < mButtons.length; i++) {
            if (menu.getItem(i).isChecked()) {
                return i;
            }
        }
        return 0;
    }
 

/**
 * enable the shifting mode for each item
 *
 * @param enable It will has a shift animation for item if true. Otherwise the item text always be shown.
 */
public void enableItemShiftingMode(boolean enable) {
    /*
    1. get field in this class
    private final BottomNavigationMenuView mMenuView;

    2. get field in this mMenuView
    private BottomNavigationItemView[] mButtons;

    3. change field mShiftingMode value in mButtons
    private boolean mShiftingMode = true;
     */
    // 1. get mMenuView
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    // 2. get mButtons
    BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
    // 3. change field mShiftingMode value in mButtons
    for (BottomNavigationItemView button : mButtons) {
        setField(button.getClass(), button, "mShiftingMode", enable);
    }
    mMenuView.updateMenuView();
}
 

/**
     * get the current checked item position
     *
     * @return index of item, start from 0.
     */
    public int getCurrentItem() {
        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

        2. get field in mMenuView
        private BottomNavigationItemView[] mButtons;

        3. get menu and traverse it to get the checked one
         */

        // 1. get mMenuView
//        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // 3. get menu and traverse it to get the checked one
        Menu menu = getMenu();
        for (int i = 0; i < mButtons.length; i++) {
            if (menu.getItem(i).isChecked()) {
                return i;
            }
        }
        return 0;
    }
 

/**
 * get the current checked item position
 *
 * @return index of item, start from 0.
 */
public int getCurrentItem() {
    /*
    1. get field in this class
    private final BottomNavigationMenuView mMenuView;

    2. get field in mMenuView
    private BottomNavigationItemView[] mButtons;

    3. get menu and traverse it to get the checked one
     */

    // 2. get mButtons
    BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
    // 3. get menu and traverse it to get the checked one
    Menu menu = getMenu();
    for (int i = 0; i < mButtons.length; i++) {
        if (menu.getItem(i).isChecked()) {
            return i;
        }
    }
    return 0;
}
 

/**
 * enable the shifting mode for each item
 *
 * @param enable It will has a shift animation for item if true. Otherwise the item text always be shown.
 */
public void enableItemShiftingMode(boolean enable) {
    /*
    1. get field in this class
    private final BottomNavigationMenuView mMenuView;

    2. get field in this mMenuView
    private BottomNavigationItemView[] mButtons;

    3. change field mShiftingMode value in mButtons
    private boolean mShiftingMode = true;
     */
    // 1. get mMenuView
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    // 2. get mButtons
    BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
    // 3. change field mShiftingMode value in mButtons
    for (BottomNavigationItemView button : mButtons) {
        setField(button.getClass(), button, "mShiftingMode", enable);
    }
    mMenuView.updateMenuView();
}
 

private void disableShiftingMode() {
    BottomNavigationMenuView menuView = (BottomNavigationMenuView) getChildAt(0);
    try {
        Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
        shiftingMode.setAccessible(true);
        shiftingMode.setBoolean(menuView, false);
        shiftingMode.setAccessible(false);
        for (int i = 0; i < menuView.getChildCount(); i++) {
            BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);
            item.setShiftingMode(false);
            // Set the checked value so that the view will be updated.
            item.setChecked(item.getItemData().isChecked());
        }
    } catch (NoSuchFieldException | IllegalAccessException e) {
        // Do nothing if reflection fails.
    }
}
 

private void setBottomIconOriColor(BottomNavigationView bottomView) {
    try {
        Field mMenuViewField = BottomNavigationView.class.getDeclaredField("mMenuView");
        mMenuViewField.setAccessible(true);
        BottomNavigationMenuView mMenuView = (BottomNavigationMenuView) mMenuViewField.get(bottomView);

        Field mButtonsField = BottomNavigationMenuView.class.getDeclaredField("mButtons");
        mButtonsField.setAccessible(true);
        BottomNavigationItemView[] mButtons = (BottomNavigationItemView[]) mButtonsField.get(mMenuView);

        Field mIconField = BottomNavigationItemView.class.getDeclaredField("mIcon");
        mIconField.setAccessible(true);

        for (BottomNavigationItemView item : mButtons) {
            ImageView mIcon = (ImageView) mIconField.get(item);
            mIcon.setImageTintList(null);
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}
 

public static void disableShiftMode(Context context, BottomNavigationView view) {
    int color = ATHUtil.resolveColor(context, android.R.attr.textColorSecondary);
    setItemIconColors(view, color, ThemeStore.accentColor(context));
    setItemTextColors(view, color, ThemeStore.accentColor(context));

    BottomNavigationMenuView menuView = (BottomNavigationMenuView) view.getChildAt(0);

    try {
        Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
        shiftingMode.setAccessible(true);
        shiftingMode.setBoolean(menuView, false);
        shiftingMode.setAccessible(false);
        for (int i = 0; i < menuView.getChildCount(); i++) {
            BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);


             /*TextView smallText = (TextView) item.findViewById(R.id.smallLabel);
            smallText.setVisibility(View.GONE);
            TextView largeLabel = (TextView) item.findViewById(R.id.largeLabel);
            largeLabel.setVisibility(View.GONE);

            AppCompatImageView icon = (AppCompatImageView) item.getChildAt(0);

            FrameLayout.LayoutParams params = (BottomNavigationView.LayoutParams) icon.getLayoutParams();
            params.gravity = Gravity.CENTER;*/

            //noinspection RestrictedApi
            item.setShiftingMode(false);
            // set once again checked value, so view will be updated
            //noinspection RestrictedApi
            item.setChecked(item.getItemData().isChecked());
        }
    } catch (NoSuchFieldException | IllegalAccessException ignored) {
        ignored.printStackTrace();
    }
}
 

/**
 * set margin top for icon
 *
 * @param position
 * @param marginTop in px
 */
public BottomNavigationViewInner setIconMarginTop(int position, int marginTop) {
    /*
    1. BottomNavigationItemView
    2. private final int mDefaultMargin;
     */
    BottomNavigationItemView itemView = getBottomNavigationItemView(position);
    setField(BottomNavigationItemView.class, itemView, "defaultMargin", marginTop);
    mMenuView.updateMenuView();
    return this;
}
 

/**
 * get icon at position
 *
 * @param position
 * @return
 */
public ImageView getIconAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private ImageView mIcon;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    ImageView mIcon = getField(BottomNavigationItemView.class, mButtons, "mIcon");
    return mIcon;
}
 

/**
 * get small label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getSmallLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mSmallLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mSmallLabel = getField(BottomNavigationItemView.class, mButtons, "mSmallLabel");
    return mSmallLabel;
}
 

/**
 * get large label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getLargeLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mLargeLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mLargeLabel = getField(BottomNavigationItemView.class, mButtons, "mLargeLabel");
    return mLargeLabel;
}
 

/**
 * return item count
 *
 * @return
 */
public int getItemCount() {
    BottomNavigationItemView[] bottomNavigationItemViews = getBottomNavigationItemViews();
    if (null == bottomNavigationItemViews)
        return 0;
    return bottomNavigationItemViews.length;
}
 

/**
 * set margin top for icon
 * @param position
 * @param marginTop in px
 */
public void setIconMarginTop(int position, int marginTop) {
    /*
    1. BottomNavigationItemView
    2. private final int mDefaultMargin;
     */
    BottomNavigationItemView itemView = getBottomNavigationItemView(position);
    setField(BottomNavigationItemView.class, itemView, "mDefaultMargin", marginTop);
    mMenuView.updateMenuView();
}
 

/**
 * get icon at position
 *
 * @param position
 * @return
 */
public ImageView getIconAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private ImageView mIcon;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    ImageView mIcon = getField(BottomNavigationItemView.class, mButtons, "icon");
    return mIcon;
}
 

/**
 * return item count
 *
 * @return
 */
public int getItemCount() {
    BottomNavigationItemView[] bottomNavigationItemViews = getBottomNavigationItemViews();
    if (null == bottomNavigationItemViews)
        return 0;
    return bottomNavigationItemViews.length;
}
 

/**
 * get large label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getLargeLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mLargeLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mLargeLabel = getField(BottomNavigationItemView.class, mButtons, "largeLabel");
    return mLargeLabel;
}
 

/**
 * get private mButtons in mMenuView
 *
 * @return
 */
public BottomNavigationItemView[] getBottomNavigationItemViews() {
    if (null != mButtons)
        return mButtons;
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     */
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    mButtons = getField(mMenuView.getClass(), mMenuView, "buttons");
    return mButtons;
}
 

/**
 * get small label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getSmallLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mSmallLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mSmallLabel = getField(BottomNavigationItemView.class, mButtons, "smallLabel");
    return mSmallLabel;
}
 

/**
 * get private mButtons in mMenuView
 *
 * @return
 */
public BottomNavigationItemView[] getBottomNavigationItemViews() {
    if (null != mButtons)
        return mButtons;
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     */
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    mButtons = getField(mMenuView.getClass(), mMenuView, "mButtons");
    return mButtons;
}
 

/**
     * set the current checked item
     *
     * @param item start from 0.
     */
    public void setCurrentItem(int item) {
        // check bounds
        if (item < 0 || item >= getMaxItemCount()) {
            throw new ArrayIndexOutOfBoundsException("item is out of bounds, we expected 0 - "
                    + (getMaxItemCount() - 1) + ". Actually " + item);
        }

        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

        2. get field in mMenuView
        private BottomNavigationItemView[] mButtons;
        private final OnClickListener mOnClickListener;

        3. call mOnClickListener.onClick();
         */
        // 1. get mMenuView
        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // get mOnClickListener
        OnClickListener mOnClickListener = getField(mMenuView.getClass(), mMenuView, "mOnClickListener");

//        System.out.println("mMenuView:" + mMenuView + " mButtons:" + mButtons + " mOnClickListener" + mOnClickListener);
        // 3. call mOnClickListener.onClick();
        mOnClickListener.onClick(mButtons[item]);

    }
 

@Override
public BottomNavigationItemView[] getBottomNavigationItemViews() {
    try {
        return super.getBottomNavigationItemViews();
    } catch (Exception e) {
        return null;
    }
}
 

@Override
public BottomNavigationItemView getBottomNavigationItemView(int position) {
    try {
        return super.getBottomNavigationItemView(position);
    } catch (Exception e) {
        return null;
    }
}
 

/**
 * set margin top for icon
 *
 * @param position
 * @param marginTop in px
 */
public void setIconMarginTop(int position, int marginTop) {
    /*
    1. BottomNavigationItemView
    2. private final int mDefaultMargin;
     */
    BottomNavigationItemView itemView = getBottomNavigationItemView(position);
    setField(BottomNavigationItemView.class, itemView, "mDefaultMargin", marginTop);
    mMenuView.updateMenuView();
}
 

/**
 * return item count
 *
 * @return
 */
public int getItemCount() {
    BottomNavigationItemView[] bottomNavigationItemViews = getBottomNavigationItemViews();
    if (null == bottomNavigationItemViews)
        return 0;
    return bottomNavigationItemViews.length;
}
 

/**
 * get large label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getLargeLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mLargeLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mLargeLabel = getField(BottomNavigationItemView.class, mButtons, "mLargeLabel");
    return mLargeLabel;
}
 

/**
 * get small label at position
 * Each item has tow label, one is large, another is small.
 *
 * @param position
 * @return
 */
public TextView getSmallLabelAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private final TextView mSmallLabel;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    TextView mSmallLabel = getField(BottomNavigationItemView.class, mButtons, "mSmallLabel");
    return mSmallLabel;
}
 

/**
 * get icon at position
 *
 * @param position
 * @return
 */
public ImageView getIconAt(int position) {
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     * 3 private ImageView mIcon;
     */
    BottomNavigationItemView mButtons = getBottomNavigationItemView(position);
    ImageView mIcon = getField(BottomNavigationItemView.class, mButtons, "mIcon");
    return mIcon;
}
 

/**
 * get private mButtons in mMenuView
 *
 * @return
 */
public BottomNavigationItemView[] getBottomNavigationItemViews() {
    if (null != mButtons)
        return mButtons;
    /*
     * 1 private final BottomNavigationMenuView mMenuView;
     * 2 private BottomNavigationItemView[] mButtons;
     */
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    mButtons = getField(mMenuView.getClass(), mMenuView, "mButtons");
    return mButtons;
}
 

/**
     * set the current checked item
     *
     * @param item start from 0.
     */
    public void setCurrentItem(int item) {
        // check bounds
        if (item < 0 || item >= getMaxItemCount()) {
            throw new ArrayIndexOutOfBoundsException("item is out of bounds, we expected 0 - "
                    + (getMaxItemCount() - 1) + ". Actually " + item);
        }

        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

        2. get field in mMenuView
        private BottomNavigationItemView[] mButtons;
        private final OnClickListener mOnClickListener;

        3. call mOnClickListener.onClick();
         */
        // 1. get mMenuView
        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // get mOnClickListener
        OnClickListener mOnClickListener = getField(mMenuView.getClass(), mMenuView, "mOnClickListener");

//        System.out.println("mMenuView:" + mMenuView + " mButtons:" + mButtons + " mOnClickListener" + mOnClickListener);
        // 3. call mOnClickListener.onClick();
        mOnClickListener.onClick(mButtons[item]);

    }