Android开发_第239页-阿里云

Android开发技巧：永不关闭的Toast信息框

发一些《Android开发权威指南》的章节给大家尝尝鲜 Toast信息提示框之所以在显示一定时间后会自动关闭，是因为在系统中有一个Toast队列。系统会依次从队列中取（出队列）一个Toast，并显示它。在显示一段时间后，再关闭，然后再显示下一个Toa...

开源Android容器化框架Atlas开发者指南

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Android手机在开发调试时logcat不显示输出信息的解决办法

引用：http://www.cmd100.com/bbs/forum-redirect-tid-9631-goto-lastpost.html 网上搜了N多解决方法，但是很多将log级别的，用法的，更多的是如何在logcat中设置filter进行log的过滤与查看，但是我遇到的问题是，模拟器怎么着都...

AppInventor：不需要编写一行代码开发Android程序

本文截取自《Android开发权威指南》转发微博有机会赢得《Android开发权威指南》从AppInventor本身的名字来看，可将其拆成两个单词：App和Inventor。App表示应用程序，而Inventor是发明家。...

Android开发之PreferenceActivity .

今天我们来讲PreferenceActivity的使用。我们先来认识一下它，看看它长什么样？呵呵，截图如下：看到没？这就是PreferenceActivity.看起来蛮眼熟的，在哪见过。呵呵，对，在我们得模拟器“设置”—>“无线和网络”中，就使用了这个。呵呵，下面来跟据一个项目...

Android开发退出提醒窗口

　　private static Boolean isExit = false; 　　 private static Boolean hasTask = false; 　　 Timer tExit = new Ti...

Android UI开发专题——各种Drawable

本次我们主要讲解Android平台下的各种Drawable，这里在SDK的android.graphics.drawable包下面可以看到有各种Drawable类多达十几种，它们到底之间有什么关系和区别呢? 　　一、AnimationDrawable 　　顾名思义该类主要表示动画的图形类...

android多媒体开发--本地音频文件播放

本地文件就是指文件放在Android系统的外部存储设备（如：SD卡）和内部设备上的文件，SD卡比较方便，容易更新音频文件，适合于以娱乐为主的应用系统。下面看看播放本地音频文件的代码请参考代码清单12-2，完整代码请参考Chapter12_2工程中AudioPlayer代码部分。【代码清单12-2】 ...

Android多媒体开发--资源文件播放

播放音频文件。按照音频文件来源不同可以分为：资源文件播放、系统播放文件和网络文件播放。资源文件播放是放在“<工程>/res/raw”，然后发布的时候被打成APK包一起安装在手机上。很显然这种方式不适合用于播放娱乐为主的多媒体文件，由于娱乐...

《Android开发案例驱动教程》

《Android开发案例驱动教程》作者：关东升，赵志荣Java或C++程序员转变成为Android程序员采用案例驱动模式展开讲解知识点，即介绍案例->案例涉及技术->展开知识点->总结的方式本书作者从事多年一线开发和培训，讲解知识点力求细致，深入浅出目&nbs...

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