android - NavigationView 的侧滑菜单中如何保存新增项(通过程序添加)
伊谢尔伦
伊谢尔伦 2017-04-17 17:19:52
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1.在学习 Android Support Library 23.2 中的 NavigationView 的使用时,想通过一个 按钮来手动增加侧滑菜单的 菜单项,但是应用 restart 之后这些增加的 "New Item" 就会丢失,如何保存这些增加的菜单项?

2.像图中这样的,通过 "Add New Item" 来增加 Menu Item

restart 之后

3.`
activity_main

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="240dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="@android:color/white"
        app:headerLayout="@layout/nav_header"
        app:menu="@menu/menu_nav">

        <TextView
            android:id="@+id/add_menu_item"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:textAllCaps="false"
            android:clickable="true"
            android:layout_gravity="bottom"
            android:gravity="center"
            android:textSize="20sp"
            android:text="Add New Item"/>

    </android.support.design.widget.NavigationView>`
MainActivity
        tvAddItem.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                navDrawer.getMenu().add("New Item");
            }
        });

4.我是一名初学者,在搜索了好久之后自己实在无法做到,请大家帮帮忙!

伊谢尔伦
伊谢尔伦

小伙看你根骨奇佳,潜力无限,来学PHP伐。

reply all(1)
大家讲道理

Local storage and then add it, which probably means dynamic configuration, because the application will naturally be restored after it is reset. The basic approach is to use storage (database, configuration table, file) to record menu items, and then add them dynamically when the application starts.

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