zoukankan      html  css  js  c++  java
  • Learning Android ActionBar

    PART1:Make Android2.1 Support ActionBar

    Last evening I learnt how to make android2.1 support actionbar from Android Developers.The page is HERE,Click.

    To sum up , I briefy illustrate the main steps:

    1.Add the  v7 appcompat library , which is not just a jar file but a library with resources.

    2.Let the Activities that originally extending "Activity" to extend "ActionBarActivity".

    3.In your manifest file, update either the <application> element or individual <activity> elements to use one of the Theme.AppCompat themes. For example:

    That's it.

    BTW,if you wanna know what the Theme.AppCompat themes contain, "Alt + /" is not capable , you can find them also on Android Developers,

    Thme.AppCompat.For example, you find 

    public static int Theme_AppCompat_Light_DarkActionBar, 

    then you should change the theme like this:

    android:theme="@style/Theme.AppCompat.Light.DarkActionBar"

    keep in mind that the first letter in each word should be its upper class form.

    PART2:Adding Action Buttons

    Android Developers says the most important buttons should be set on the ActionBar, buttons that are not so important should be placed in the Overflow Button.

    ------Met a Problem----

    After adding a key-value pair in strings.xml file, MainActivity.java pointed out that R.java can't be found.So open "gen" folder,sure enough R.java is missing.Checking the xml file,I found in <string name="action_search">Search!!</string>, the "s" in the string was written as a upper class form.change it back to lower, R.java returned.Problem solved.

    ------------------------

  • 相关阅读:
    JavaScript与C# Windows应用程序交互
    用DateTime.ToString(string format)输出不同格式的日期
    时间间隔与暂停
    C#中比较两个时间的时间差
    lambda函数的用法
    Tornado笔记
    DjangoWeb应用开发实战笔记
    再看装饰器
    描述符
    flask简单代码回顾
  • 原文地址:https://www.cnblogs.com/larrylawrence/p/3649741.html
Copyright © 2011-2022 走看看