Represents a command that can be executed. Often used to run code in a different Thread.
Thread
代表一个可执行的命令。常用在一个不同的线程中运行代码。
已知间接子类:
AnimationDrawable
CookieSyncManager
FutureTask<V>
HandlerThread
RefQueueWorker
RenderScript.RSErrorHandler
RenderScript.RSMessageHandler
RunnableFuture<V>
RunnableScheduledFuture<V>
TimerTask