好读书的程序员的博客

[1].Mobile devices typically have constrained system resources. Android devices can have as little as 16MB of memory available to a single application.=============================================

If either the MAIN action or LAUNCHER category are not declared for one of your activities, then your app icon will not appear in the Home screen's list of apps. // Make sure we're runn

If either the MAIN action or LAUNCHER category are not declared for one of your activities, then your app icon will not appear in the Home screen's list of apps. // Make sure we're

先看一个图：相关的类：View //android中所有的可视组件都继承自View，View定义了很多callbacks来定义它的行为，如onDraw(),onMeasure()等。ViewParent (interface) //ViewParent为所有想扮演其他views的父亲的类定义了协议。ViewGroup (extends View and implem

转载请注明出处：http://blog.youkuaiyun.com/guolin_blog/article/details/9097463其实我一直准备写一篇关于Android事件分发机制的文章，从我的第一篇博客开始，就零零散散在好多地方使用到了Android事件分发的知识。也有好多朋友问过我各种问题，比如：onTouch和onTouchEvent有什么区别，又该如何使用？为什么给ListVie

[1].A View occupies a rectangular area on the screen and is responsible for drawing and event handling. View is the base class for widgets, which are used to create interactive UI components (butt

v.getScrollY() 表示当前滚动到的y位置v.getHeight() scrollview窗口的高度v.getScrollY()+v.getHeight() 这个和表示已经展示给用户的内容的高度view.getMeasuredHeight() 表示实际内容（scrollview里的子只有一个，里面放的是实际的内容）总高度。整个滚动的过程，就好像拿着一个高度为v.g

转载请注明出处：http://blog.youkuaiyun.com/guolin_blog/article/details/9991569之前也是由于周末通宵看TI3比赛，一直没找到时间写博客，导致已经有好久没更新了。惭愧！后面还会恢复进度，尽量保证每周都写吧。这里也是先恭喜一下来自瑞典的Alliance战队夺得了TI3的冠军，希望明年中国战队能够虎起！开始进入正题，我们都知道，Andr

转载请注明出处：http://blog.youkuaiyun.com/guolin_blog/article/details/11952435相信大多数朋友对Service这个名词都不会陌生，没错，一个老练的Android程序员如果连Service都没听说过的话，那确实也太逊了。Service作为Android四大组件之一，在每一个应用程序中都扮演着非常重要的角色。它主要用于在后台处理一些耗时的逻辑，

The onInterceptTouchEvent() method is called whenever a touch event is detected on the surface of a ViewGroup, including on the surface of its children. If onInterceptTouchEvent() returns true,

git clone https://code.google.com/p/apps-for-android/阅读源码，从现在开始！

[1].Content providers are the standard interface that connects data in one process with code running in another process.==========  ==========  ==========  ==========  ==========  ==========

Caution: A service runs in the main thread of its hosting process—the service does not create its own thread and does not run in a separate process (unless you specify otherwise). This means tha

[1].However, if you want the service to send a result back, then the client that starts the service can create a PendingIntent for a broadcast (with getBroadcast()) and deliver it to the service

[1].If an application component starts and there already exists a process for that application (because another component from the application exists), then the component is started within that proc

A simple guide to 9-patch for Android UIWhile I was working on my first Android app, I found 9-patch (aka 9.png) to be confusing and poorly documented. After a little while, I finally picked up