两个不同的 JFrame 之间的通信?

Communication between two different JFrames?(两个不同的 JFrame 之间的通信?)

问题描述

您好，您可能听说过 GIMP 或类似的东西，它使用不同的帧作为一个完整的 gui，所以我想知道当两个(可能多个)帧都加载到内存中并且可见时如何进行这种帧通信.

Hello as maybe you have heard about GIMP or something like that which uses different frames As a complete gui so I was wondering how to do such frames communications when both(maybe multiple) frames are loaded in memory and are visible.

我看过一些文章，但不是很满意，如果有人有好的例子或教程，请分享.

I have gone through some articles but they were not so satisfactory, if anyone have a good example or tutorial then please share.

问候阿洛克夏尔马

推荐答案

基本上就是在B帧中引用A帧，在A帧中引用B帧:

Basically, it's just a matter of having a reference to frame A in frame B, and a reference to frame B in frame A :

public class FrameA extends JFrame {
    private FrameB frameB;

    public void setFrameB(FrameB frameB) {
        this.frameB = frameB;
    }

    public void foo() {
        // change things in this frame
        frameB.doSomethingBecauseFrameAHasChanged();
    }
}

public class FrameB extends JFrame {
    private FrameA frameA;

    public void setFrameA(FrameA frameA) {
        this.frameA = frameA;
    }

    public void bar() {
        // change things in this frame
        frameA.doSomethingBecauseFrameBHasChanged();
    }
}

public class Main {
    public static void main(String[] args) {
        FrameA frameA = new FrameA();
        FrameB frameB = new FrameB();
        frameA.setFrameB(frameB);
        frameB.setFrameA(frameA);
        // make both frames visible
    }
}

大多数时候，引入接口来解耦框架(侦听器等)，或者使用中介来避免所有框架之间的过多链接，但您应该明白这一点.

Most of the time, interfaces are introduced to decouple the frames (listeners, etc.), or a mediator is used in order to avoid too much linkings between all the frames, but you should get the idea.

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