为什么需要线程池 我们有两种常见的创建线程的方法，一种是继承Thread类，一种是实现Runnable的接口，Thread类其实也是实现了Runnable接口。但是我们创建这两种线程在运行结束后都会被虚拟机销毁，如果线程数量多的话
I am trying to accomplish a view like this: left side = live camera preview, right side = a column of 4 images. But all that I managed with the following xml was a fullscreen live camera preview. Andr
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