Java BottomNavigationMenuView.updateMenuView方法代码示例

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
 * enable the shifting mode for navigation
 *
 * @param enable It will has a shift animation if true. Otherwise all items are the same width.
 */
public void enableShiftingMode(boolean enable) {
    /*
    1. get field in this class
    private final BottomNavigationMenuView mMenuView;

    2. change field mShiftingMode value in mMenuView
    private boolean mShiftingMode = true;
     */
    // 1. get mMenuView
    BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    // 2. change field mShiftingMode value in mMenuView
    setField(mMenuView.getClass(), mMenuView, "mShiftingMode", enable);

    mMenuView.updateMenuView();
}
 

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
 * 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();
}
 

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
 * set menu item height
 *
 * @param height in px
 */
public void setItemHeight(int height) {
    // 1. get mMenuView
    final BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
    // 2. set private final int mItemHeight in mMenuView
    setField(mMenuView.getClass(), mMenuView, "mItemHeight", height);

    mMenuView.updateMenuView();
}
 

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
     * change the visibility of text
     *
     * @param visibility
     */
    public void setTextVisibility(boolean visibility) {
        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

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

        3. set text size in mButtons
        private final TextView mLargeLabel
        private final TextView mSmallLabel

        4. change mItemHeight to only icon size in mMenuView
         */
        // 1. get mMenuView
        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // 3. change field mShiftingMode value in mButtons
        for (BottomNavigationItemView button : mButtons) {
            TextView mLargeLabel = getField(button.getClass(), button, "mLargeLabel");
            TextView mSmallLabel = getField(button.getClass(), button, "mSmallLabel");

            if (!visibility) {
                // if not record the font size, record it
                if (!visibilityTextSizeRecord && !animationRecord) {
                    visibilityTextSizeRecord = true;
                    mLargeLabelSize = mLargeLabel.getTextSize();
                    mSmallLabelSize = mSmallLabel.getTextSize();
                }

                // if not visitable, set font size to 0
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, 0);
                mSmallLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, 0);

            } else {
                // if not record the font size, we need do nothing.
                if (!visibilityTextSizeRecord)
                    break;

                // restore it
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mLargeLabelSize);
                mSmallLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mSmallLabelSize);
            }
        }

        // 4 change mItemHeight to only icon size in mMenuView
        if (!visibility) {
            // if not record mItemHeight
            if (!visibilityHeightRecord) {
                visibilityHeightRecord = true;
                mItemHeight = getItemHeight();
            }

            // change mItemHeight to only icon size in mMenuView
            // private final int mItemHeight;

            // change mItemHeight
//            System.out.println("mLargeLabel.getMeasuredHeight():" + getFontHeight(mSmallLabelSize));
            setItemHeight(mItemHeight - getFontHeight(mSmallLabelSize));

        } else {
            // if not record the mItemHeight, we need do nothing.
            if (!visibilityHeightRecord)
                return;
            // restore mItemHeight
            setItemHeight(mItemHeight);
        }

        mMenuView.updateMenuView();
    }
 

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
     * enable or disable click item animation(text scale and icon move animation in no item shifting mode)
     *
     * @param enable It means the text won't scale and icon won't move when active it in no item shifting mode if false.
     */
    public void enableAnimation(boolean enable) {
        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

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

        3. chang mShiftAmount to 0 in mButtons
        private final int mShiftAmount

        change mScaleUpFactor and mScaleDownFactor to 1f in mButtons
        private final float mScaleUpFactor
        private final float mScaleDownFactor

        4. change label font size in mButtons
        private final TextView mLargeLabel
        private final TextView mSmallLabel
         */

        // 1. get mMenuView
        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();
        // 3. change field mShiftingMode value in mButtons
        for (BottomNavigationItemView button : mButtons) {
            TextView mLargeLabel = getField(button.getClass(), button, "mLargeLabel");
            TextView mSmallLabel = getField(button.getClass(), button, "mSmallLabel");

            // if disable animation, need animationRecord the source value
            if (!enable) {
                if (!animationRecord) {
                    animationRecord = true;
                    mShiftAmount = getField(button.getClass(), button, "mShiftAmount");
                    mScaleUpFactor = getField(button.getClass(), button, "mScaleUpFactor");
                    mScaleDownFactor = getField(button.getClass(), button, "mScaleDownFactor");

                    mLargeLabelSize = mLargeLabel.getTextSize();
                    mSmallLabelSize = mSmallLabel.getTextSize();

//                    System.out.println("mShiftAmount:" + mShiftAmount + " mScaleUpFactor:"
//                            + mScaleUpFactor + " mScaleDownFactor:" + mScaleDownFactor
//                            + " mLargeLabel:" + mLargeLabelSize + " mSmallLabel:" + mSmallLabelSize);
                }
                // disable
                setField(button.getClass(), button, "mShiftAmount", 0);
                setField(button.getClass(), button, "mScaleUpFactor", 1);
                setField(button.getClass(), button, "mScaleDownFactor", 1);

                // let the mLargeLabel font size equal to mSmallLabel
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mSmallLabelSize);

                // debug start
//                mLargeLabelSize = mLargeLabel.getTextSize();
//                System.out.println("mLargeLabel:" + mLargeLabelSize);
                // debug end

            } else {
                // haven't change the value. It means it was the first call this method. So nothing need to do.
                if (!animationRecord)
                    return;
                // enable animation
                setField(button.getClass(), button, "mShiftAmount", mShiftAmount);
                setField(button.getClass(), button, "mScaleUpFactor", mScaleUpFactor);
                setField(button.getClass(), button, "mScaleDownFactor", mScaleDownFactor);
                // restore
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mLargeLabelSize);
            }
        }
        mMenuView.updateMenuView();
    }
 

import android.support.design.internal.BottomNavigationMenuView; //导入方法依赖的package包/类
/**
     * change the visibility of text
     *
     * @param visibility
     */
    public void setTextVisibility(boolean visibility) {
        this.textVisibility = visibility;
        /*
        1. get field in this class
        private final BottomNavigationMenuView mMenuView;

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

        3. set text size in mButtons
        private final TextView mLargeLabel
        private final TextView mSmallLabel

        4. change mItemHeight to only icon size in mMenuView
         */
        // 1. get mMenuView
        BottomNavigationMenuView mMenuView = getBottomNavigationMenuView();
        // 2. get mButtons
        BottomNavigationItemView[] mButtons = getBottomNavigationItemViews();

        // 3. change field mShiftingMode value in mButtons
        for (BottomNavigationItemView button : mButtons) {
            TextView mLargeLabel = getField(button.getClass(), button, "mLargeLabel");
            TextView mSmallLabel = getField(button.getClass(), button, "mSmallLabel");

            if (!visibility) {
                // if not record the font size, record it
                if (!visibilityTextSizeRecord && !animationRecord) {
                    visibilityTextSizeRecord = true;
                    mLargeLabelSize = mLargeLabel.getTextSize();
                    mSmallLabelSize = mSmallLabel.getTextSize();
                }

                // if not visitable, set font size to 0
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, 0);
                mSmallLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, 0);

            } else {
                // if not record the font size, we need do nothing.
                if (!visibilityTextSizeRecord)
                    break;

                // restore it
                mLargeLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mLargeLabelSize);
                mSmallLabel.setTextSize(TypedValue.COMPLEX_UNIT_PX, mSmallLabelSize);
            }
        }

        // 4 change mItemHeight to only icon size in mMenuView
        if (!visibility) {
            // if not record mItemHeight
            if (!visibilityHeightRecord) {
                visibilityHeightRecord = true;
                mItemHeight = getItemHeight();
            }

            // change mItemHeight to only icon size in mMenuView
            // private final int mItemHeight;

            // change mItemHeight
//            System.out.println("mLargeLabel.getMeasuredHeight():" + getFontHeight(mSmallLabelSize));
            setItemHeight(mItemHeight - getFontHeight(mSmallLabelSize));

        } else {
            // if not record the mItemHeight, we need do nothing.
            if (!visibilityHeightRecord)
                return;
            // restore mItemHeight
            setItemHeight(mItemHeight);
        }

        mMenuView.updateMenuView();
    }