muyable

摘要： you should consider creating a custom View component and drawing with a Canvas inView.onDraw(). The most convenient aspect of doing so is that the And... 阅读全文

摘要： canvas可以通过系统给定View.onDraw()或者surfaceHolder.lockCanvas()，也可以自己创建。但注意，自己创建时，一定要定义绑定一个Bitmap到Canvas 以承载canvas内容 阅读全文

摘要： SurfaceView一、简述TheSurfaceViewis a special subclass of View that offers a dedicated drawing surface within the View hierarchy. The aim is to offer this... 阅读全文

摘要： 对形如"a,b,c,d,e"类字符串的解析，所用的正则表达式：[\\s*,*\\s]Scanner sc = new Scanner(System.in);Pattern p = Pattern.compile("[\\s*,*\\s]");sc.useDelimiter(p);或者Scanner sc = new Scanner(System.in);sc.useDelimiter("[\\s*,*\\s]");A Scanner breaks its input into tokens using a delimiter patt 阅读全文

摘要： Class OverviewInterface to global information about an application environment. This is an abstract class whose implementation is provided by the Android system. It allows access to application-specific resources and classes, as well as up-calls for application-level operations such as launching act 阅读全文

摘要： handler：HandlerLooper（同一线程中的对象）涉及到的有Looper、MessageQueue、Message要点：1、Looper初始化时会自动创建一个MessageQueue，用来对Message进行管理（先进先出）2、UI主线程默认初始化好了一个Looper.若在子线程中创建Looper，使用Loop.prepare()方法。启动looper，用looper.loop()方法。3、Handler 发送与处理（一般重写）MessageQueue中的Message4、handler所在的线程中，必须有一个looper。handler与looper中的MessageQueue进 阅读全文