本文详细介绍了Process类中的killProcess方法，该方法允许应用程序请求终止特定进程ID(PID)对应的进程。然而，内核会施加标准限制，通常仅允许终止调用者所属的应用程序及其创建的进程，具有相同用户标识符（UID）的包也可以相互终止对方的进程。
Process的方法
killProcess(int pid)
Kill the process with the given PID.
Kill the process with the given PID. Note that, though this API allows us to request to kill any process based on its PID, the kernel will still impose standard restrictions on which PIDs you are actually able to kill. Typically this means only the process running the caller's packages/application and any additional processes created by that app; packages sharing a common UID will also be able to kill each other's processes.
killprocess 只能杀死运行当前app的进程或者当前app创建的进程，当然其他进程有相同的进程id也可以被杀死。
除此之外killprocess无法杀死其他进程，执行此函数不会产生任何反馈
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