Question

我正在尝试将pythonintercept（使用TKinter）应用程序转换为Java。 Tkinter具有循环机制，例如：

<!-- language: python -->

def checkState():
    if checkCond1():
        root.after_idle(cond1Loop)
    elif checkCond2():
        root.after_idle(cond2Loop)
    elif checkCond3():
        root.after_idle(cond3Loop)
    else:
        print('not found known state...')
        root.update_idletasks() # waits for idle Tk tasks
        root.after_idle(checkState)

def cond1Loop():
    # some checks here, may be looping deeper
    root.after_idle(cond1Loop)


def cond2Loop():
    # some checks here, may be looping deeper
    root.after_idle(cond2Loop)


def cond3Loop():
    # some checks here, may be looping deeper
    root.after_idle(cond3Loop)

root = Tk()
mainWindow = Frame(root)
# some win init here
root.after_idle(checkState)# calls function when no idle tasks
root.mainloop()

我的第一个尝试是使用计时器来实现它，但是无法从其自身的功能中停止计时器：

<!-- language: java-->
private void mainLogicLoop(){
    javax.swing.Timer localtimer = new javax.swing.Timer(100, e -> {
        //finding state
        if(checkCond1()){
            System.out.println("I am at cond 1.");
            cond1Loop();
            //here i need to stop this timer,
            //but localtimer is invisible from here.
            //cond1Loop() will run its own timer...
        }else
        if(checkCond2()){
            System.out.println("I am at cond 2.");
            cond2Loop();
            //here i need to stop this timer,
            //but localtimer is invisible from here.
            //cond2Loop() will run its own timer...
        }else
        if(checkCond3()){
            System.out.println("I am at cond 3.");
            cond3Loop();
            //here i need to stop this timer,
            //but localtimer is invisible from here.
            //cond3Loop() will run its own timer...
        }else{
            System.out.println("No known conditions found.");
        }
    localtimer.start();

}

public static void main(String[] args) {
    mainLogicLoop();
}

请不要建议外部脚本，例如Sikuli和依赖平台的功能。我需要尽可能的“纯天然” Java。

-更新-

因为在WinXP上运行而使用JDK 1.8

Answer 1

由于@ cricket_007，使用ExecutorService可以轻松实现此循环机制。工作代码示例：在构造函数中，我创建服务ExecutorService service = Executors.newCachedThreadPool(); 在每个循环的结尾我都打电话给 service.submit(() -> loopname());

如何实现循环机制，即函数调用自身直到不满足某些条件，或对函数调用进行排队

1 个答案: