按钮摁下触发一个无限循环行为,再摁停止该行为,怎么写可以实现停止该行为? - V2EX
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oldbird

按钮摁下触发一个无限循环行为,再摁停止该行为,怎么写可以实现停止该行为?

  •  
  •   oldbird Jul 1, 2019 4288 views
    his topic created in 2507 days ago, the information mentioned may be changed or developed.

    类似这么个意思,怎么可以跳出这个无限循环?

    14 replies    2019-07-01 17:33:50 +08:00
    liuminyong
        1
    liuminyong  
       Jul 1, 2019
    定义一个全局变量,再摁的时候改变变量值,循环里判断这个值停止
    linmaoxe2v
        2
    linmaoxe2v  
       Jul 1, 2019
    对按钮计数,偶数清零停循坏,奇数循环。
    zhuangjia
        3
    zhuangjia  
       Jul 1, 2019
    设置个标志位,每次循环就检测一下?
    nvkou
        4
    nvkou  
       Jul 1, 2019 via Android
    循环内做变量检测。我觉得楼主想问的应该不是这个问题。你要解决啥?事件通知?
    tabris17
        5
    tabris17  
       Jul 1, 2019
    粗暴解决的话循环放在新进程里,停止就 kill 掉进程
    zjyl1994
        6
    zjyl1994  
       Jul 1, 2019
    全局变量整个标识啦,比如 bool running=true
    无限循环得时候 while ( running ){}
    等你要停的时候 running=false 那边自然就停了
    dongrenwen
        7
    dongrenwen  
       Jul 1, 2019
    break
    kaneg
        8
    kaneg  
       Jul 1, 2019 via iPhone
    需要两个独立的线程,一个负责干活,一个负责处理 UI,在 UI 线程里负责侦听按钮事件然后来控制干活的线程,比如用一个 isRunning 变量,或者用线程的 interrupt 方式
    moxiaonai
        9
    moxiaonai  
       Jul 1, 2019 via Android
    setInterval clearInterval
    Kumius
        10
    Kumius  
       Jul 1, 2019
    该行为运行很快,标志位即可;
    该行为非常耗时,多线程 & kill ;
    hikarugo
        11
    hikarugo  
       Jul 1, 2019
    timer
    egfegdfr
        12
    egfegdfr  
       Jul 1, 2019
    就怕,来不及点停止按钮,服务器就挂了
    shawnsh
        13
    shawnsh  
       Jul 1, 2019
    让线程优雅的停止?轮训状态位。线程可不能长时间阻塞啊
    bb123
        14
    bb123  
       Jul 1, 2019
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