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A widget is a small gadget or control of your android application placed on the home screen. Widgets can be very handy as they allow you to put your favourite applications on y
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Android allows applications to access to view the access the state of the wireless connections at very low level. Application can access almost all the information of a wifi connec
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Android allows you to manipulate images by adding different kinds of effects on the images. You can easily apply image processing techniques to add certain kinds of effects on imag
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Android provides special types of touch screen events such as pinch , double tap, scrolls , long presses and flinch. These are all known as gestures.
Android provides GestureDet
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Sometimes you don't want an image to appear abruptly on the screen, rather you want to apply some kind of animation to the image when it transitions from one image to another.
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The Android platform includes a JET engine that lets you add interactive playback of JET audio content in your applications. Android provides JetPlayer class to handle this stuff.
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Android allows your application to connect to facebook and share data or any kind of updates on facebook. This chapter is about integrating facebook into your application.
There
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架构图：
邮件服务原理及架构 (linuxcast 笔记)
电子邮件基本概念：
MUA（Mail User Agent） 接收邮件所使用的邮件客户端，使用IMAP或POP3协议与服务器通信；
MTA（Mail Transfer Agent） 通过SMTP协议发送、转发邮件；
MDA（Mail Deliver Agent）