如何防止弹出菜单在复选框单击时关闭 [英] How to prevent popup menu from closing on checkbox click

问题描述

我在网上搜索了很多，但没有任何关于阻止弹出菜单关闭的内容.

I search a lot on net but there is nothing about preventing popup menu from closing.

每当我单击复选框项或任何其他弹出菜单项时，弹出菜单都会自行关闭.当用户在弹出菜单中选中/取消选中复选框时，如何防止它被关闭.

Whenever i click on checkbox item or any other popup menu item, popup menu dismiss itself. How can i prevent it from dismissing when user check/uncheck checkbox in popup menu.

我在操作栏菜单项的点击事件上显示弹出菜单.

I'm showing popup menu on actionbar-menu item's click event.

//main_menu.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.worldofjobs.woj.MainActivity" >

<item
    android:id="@+id/action_popUpMenu"
    android:icon="@drawable/ic_action_overflow"
    android:title="@string/main_action_popUpMenu"
    app:showAsAction="always"/>

</menu>

//popup_items.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
    android:id="@+id/refresh_item"
    android:title="@string/main_refresh"/>
<item
    android:id="@+id/checkbox_item"
    android:checkable="true"
    android:title="Start notification"/>
<item
    android:id="@+id/changePasswrod_item"
    android:title="@string/main_changePassword"/>
<item
    android:id="@+id/deleteAccount_item"
    android:title="@string/main_deleteAccount"/>
<item
    android:id="@+id/logout_item"
    android:title="@string/main_logout"/>

</menu>

/**
 * Shows popup menu on click of action bar-menu inflates from
 * menu.pop_items-xml
 */
private void showPopup() {

    try {

        View v = findViewById(R.id.action_popUpMenu);

        PopupMenu popup = new PopupMenu(this, v);
        popup.setOnMenuItemClickListener(MainActivity.this);

        MenuInflater inflater = popup.getMenuInflater();
        inflater.inflate(R.menu.pop_items, popup.getMenu());
        popup.show();

    } catch (Exception e) {

        Log.e("MainActivity-showPopup:", e.toString());
    }
}

/**
 * Handles click events of popup menu items
 */
@Override
public boolean onMenuItemClick(MenuItem item) {

    super.onMenuItemSelected(1, item);
    switch (item.getItemId()) {

    case R.id.refresh_item:
        refresh();
        return true;

    case R.id.checkbox_item:
        return true;

    case R.id.changePasswrod_item:
        changePasswordPopup();
        return true;

    case R.id.deleteAccount_item:
        deleteAccount();
        return true;

    case R.id.logout_item:
        session.logout();
        finish();
        return true;
    }
    return true;
}

推荐答案

使用 popupMenu.show() 立即重新显示弹出菜单在更改选中的菜单项时无法与选中的菜单项一起正常工作状态.

Using popupMenu.show() to immediately re-show the popup menu does not work correctly with checkable menu items when changing their checked states.

这是一种首先防止关闭弹出菜单的方法.确保 onMenuItemClick 返回 false.

Here a method that prevents closing the popup menu in the first place. Make sure that onMenuItemClick returns false.

popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
    @Override
    public boolean onMenuItemClick(MenuItem item) {

        item.setChecked(!item.isChecked());

        // Do other stuff

        // Keep the popup menu open
        item.setShowAsAction(MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
        item.setActionView(new View(context));
        item.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
                return false;
            }

            @Override
            public boolean onMenuItemActionCollapse(MenuItem item) {
                return false;
            }
        });
        return false;
    }
});

这篇关于如何防止弹出菜单在复选框单击时关闭的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！