import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public void showPopupMenu(View view) throws NoSuchFieldException, IllegalAccessException {
    PopupMenu popupMenu = new PopupMenu(this, view);
    //设置 PopupMenu 的显示菜单项
    popupMenu.inflate(R.menu.main);
    // popupMenu.getMenuInflater().inflate(R.menu.main, popupMenu.getMenu());//与一行没什么区别
    //默认 PopupMenu 不显示条目icon，可以通过反射来强制使其显示icon
    Field field = popupMenu.getClass().getDeclaredField("mPopup");
    field.setAccessible(true);
    MenuPopupHelper mHelper = (MenuPopupHelper) field.get(popupMenu);
    mHelper.setForceShowIcon(true);
    //设置 PopupMenu 的条目点击事件（点击后会自动dismiss）
    popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            Toast.makeText(getApplicationContext(), item.getTitle(), Toast.LENGTH_SHORT).show();
            return false;
        }
    });
    //显示 PopupMenu
    popupMenu.show();
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
@Override
public void onClick(View v) {
    MenuPopupHelper menuHelper = new MenuPopupHelper(this,
            (MenuBuilder) mLayerTypePopup.getMenu(),
            mBinding.addLayerBtn);
    menuHelper.setForceShowIcon(true);
    menuHelper.show();
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
    if (this.mCallback == null) {
        return false;
    }
    if (!subMenu.hasVisibleItems()) {
        return true;
    }
    new MenuPopupHelper(WindowDecorActionBar.this.getThemedContext(), subMenu).show();
    return true;
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public PopupMenu(Context context, View anchor, int gravity, int popupStyleAttr, int popupStyleRes) {
    this.mContext = context;
    this.mMenu = new MenuBuilder(context);
    this.mMenu.setCallback(this);
    this.mAnchor = anchor;
    this.mPopup = new MenuPopupHelper(context, this.mMenu, anchor, false, popupStyleAttr, popupStyleRes);
    this.mPopup.setGravity(gravity);
    this.mPopup.setCallback(this);
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public boolean onOpenSubMenu(MenuBuilder subMenu) {
    if (subMenu == null) {
        return false;
    }
    if (!subMenu.hasVisibleItems()) {
        return true;
    }
    new MenuPopupHelper(this.mContext, subMenu, this.mAnchor).show();
    return true;
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public boolean hideOverflowMenu() {
    if (this.mPostedOpenRunnable == null || this.mMenuView == null) {
        MenuPopupHelper popup = this.mOverflowPopup;
        if (popup == null) {
            return false;
        }
        popup.dismiss();
        return true;
    }
    ((View) this.mMenuView).removeCallbacks(this.mPostedOpenRunnable);
    this.mPostedOpenRunnable = null;
    return true;
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public void showVisibilityMenu(View v) {
    final ImageButton rV = (ImageButton) v;
    PopupMenu popup = new PopupMenu(SendToot.this, v);
    popup.getMenuInflater().inflate(R.menu.set_visibility_menu, popup.getMenu());

    popup.setOnMenuItemClickListener((MenuItem item) -> {
            Log.d(TAG, String.valueOf(item.getItemId()));
            rV.setImageDrawable(item.getIcon());
            switch(item.getItemId()) {
                case R.id.visibility_public:
                    ToastMaker.buildToasty(this, "Your post will appear in public timelines").show();
                    break;
                case R.id.visibility_unlisted:
                    ToastMaker.buildToasty(this, "Your post will not appear public timelines").show();
                    break;
                case R.id.visibility_private:
                    ToastMaker.buildToasty(this, "Your post will appear to followers only").show();
                    break;
                case R.id.visibility_direct:
                    ToastMaker.buildToasty(this, "Your post will appear to mentioned user only").show();
                    break;
                default:
                    Log.d(TAG, "memes");

            }
            return true;
    });

    MenuPopupHelper menuHelper = new MenuPopupHelper(SendToot.this, (MenuBuilder) popup.getMenu(), v);
    menuHelper.setForceShowIcon(true);
    menuHelper.show();
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public static void applyOverflow(final @NonNull Activity activity, final @Nullable String key, final @Nullable Toolbar toolbar) {
    if (toolbar == null) return;
    toolbar.post(new Runnable() {
        @Override
        public void run() {
            try {
                Field f1 = Toolbar.class.getDeclaredField("mMenuView");
                f1.setAccessible(true);
                ActionMenuView actionMenuView = (ActionMenuView) f1.get(toolbar);
                Field f2 = ActionMenuView.class.getDeclaredField("mPresenter");
                f2.setAccessible(true);

                // Actually ActionMenuPresenter
                BaseMenuPresenter presenter = (BaseMenuPresenter) f2.get(actionMenuView);
                Field f3 = presenter.getClass().getDeclaredField("mOverflowPopup");
                f3.setAccessible(true);
                MenuPopupHelper overflowMenuPopupHelper = (MenuPopupHelper) f3.get(presenter);
                setTintForMenuPopupHelper(activity, overflowMenuPopupHelper, key);

                Field f4 = presenter.getClass().getDeclaredField("mActionButtonPopup");
                f4.setAccessible(true);
                MenuPopupHelper subMenuPopupHelper = (MenuPopupHelper) f4.get(presenter);
                setTintForMenuPopupHelper(activity, subMenuPopupHelper, key);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
/**
 * Construct a new PopupMenu.
 *
 * @param context Context for the PopupMenu.
 * @param anchor Anchor view for this popup. The popup will appear below the anchor if there
 *               is room, or above it if there is not.
 */
public IconizedPopup (Context context, View anchor) {
    mContext = context;
    mMenu = new MenuBuilder(context);
    mMenu.setCallback(this);
    mAnchor = anchor;
    mPopup = new MenuPopupHelper(context, mMenu, anchor);
    mPopup.setCallback(this);
    mPopup.setForceShowIcon(true);
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
/**
 * @hide
 */
public boolean onOpenSubMenu(MenuBuilder subMenu) {
    if (subMenu == null) return false;

    if (!subMenu.hasVisibleItems()) {
        return true;
    }

    // Current menu will be dismissed by the normal helper, submenu will be shown in its place.
    new MenuPopupHelper(mContext, subMenu, mAnchor).show();
    return true;
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public static void applyOverflowMenuTint(final @NonNull Context context, final Toolbar toolbar, final @ColorInt int color) {
    if (toolbar == null) return;
    toolbar.post(new Runnable() {
        @Override
        public void run() {
            try {
                Field f1 = Toolbar.class.getDeclaredField("mMenuView");
                f1.setAccessible(true);
                ActionMenuView actionMenuView = (ActionMenuView) f1.get(toolbar);
                Field f2 = ActionMenuView.class.getDeclaredField("mPresenter");
                f2.setAccessible(true);

                // Actually ActionMenuPresenter
                BaseMenuPresenter presenter = (BaseMenuPresenter) f2.get(actionMenuView);
                Field f3 = presenter.getClass().getDeclaredField("mOverflowPopup");
                f3.setAccessible(true);
                MenuPopupHelper overflowMenuPopupHelper = (MenuPopupHelper) f3.get(presenter);
                setTintForMenuPopupHelper(context, overflowMenuPopupHelper, color);

                Field f4 = presenter.getClass().getDeclaredField("mActionButtonPopup");
                f4.setAccessible(true);
                MenuPopupHelper subMenuPopupHelper = (MenuPopupHelper) f4.get(presenter);
                setTintForMenuPopupHelper(context, subMenuPopupHelper, color);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
private void makePopForceShowIcon(PopupMenu popupMenu) {
    try {
        Field mFieldPopup=popupMenu.getClass().getDeclaredField("mPopup");
        mFieldPopup.setAccessible(true);
        MenuPopupHelper mPopup = (MenuPopupHelper) mFieldPopup.get(popupMenu);
        mPopup.setForceShowIcon(true);
    } catch (Exception e) {

    }
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
    if (subMenu.hasVisibleItems()) {
        new MenuPopupHelper(this.mContextView.getContext(), subMenu).show();
    }
    return true;
}
 

import android.support.v7.view.menu.MenuPopupHelper; //导入依赖的package包/类
private static void setTintForMenuPopupHelper(final @NonNull Activity context, @Nullable MenuPopupHelper menuPopupHelper, final @Nullable String key) {
    if (menuPopupHelper != null) {
        final ListView listView = menuPopupHelper.getPopup().getListView();
        listView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                try {
                    Field checkboxField = ListMenuItemView.class.getDeclaredField("mCheckBox");
                    checkboxField.setAccessible(true);
                    Field radioButtonField = ListMenuItemView.class.getDeclaredField("mRadioButton");
                    radioButtonField.setAccessible(true);

                    final boolean isDark = !Util.isColorLight(Util.resolveColor(context, android.R.attr.windowBackground));

                    for (int i = 0; i < listView.getChildCount(); i++) {
                        View v = listView.getChildAt(i);
                        if (!(v instanceof ListMenuItemView)) continue;
                        ListMenuItemView iv = (ListMenuItemView) v;

                        CheckBox check = (CheckBox) checkboxField.get(iv);
                        if (check != null) {
                            TintHelper.setTint(check, Config.accentColor(context, key), isDark);
                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
                                check.setBackground(null);
                        }

                        RadioButton radioButton = (RadioButton) radioButtonField.get(iv);
                        if (radioButton != null) {
                            TintHelper.setTint(radioButton, Config.accentColor(context, key), isDark);
                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
                                radioButton.setBackground(null);
                        }
                    }
                } catch (Throwable e) {
                    e.printStackTrace();
                }
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                    listView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                } else {
                    //noinspection deprecation
                    listView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                }
            }
        });
    }
}