有没有一种方法将参数传递给一个Runnable？ [英] Is there a way to pass parameters to a Runnable?

问题描述

我有一个使用一个处理器来发布可运行实例的线程。它工作得很好，但我很好奇，我怎么会通过PARAMS在Runnable的实例中使用？也许我只是不理解此功能如何工作的。

I have a thread that uses a handler to post a runnable instance. it works nicely but I'm curious as to how I would pass params in to be used in the Runnable instance? Maybe I'm just not understanding how this feature works.

要pre抢先一你为什么需要这个的问题，我有螺纹的动画，有回调出UI线程告诉它什么实际绘制。

To pre-empt a "why do you need this" question, I have a threaded animation that has to call back out to the UI thread to tell it what to actually draw.

推荐答案

只是一个类实现的Runnable 与构造函数接受的参数可以做的，

Simply a class that implements Runnable with constructor that accepts the parameter can do,

public class MyRunnable implements Runnable {
  private Data data;
  public MyRunnable(Data _data) {
    this.data = _data;
  }

  public void run() {
    ...
  }
}

您可以只创建了Runnable类参数的构造函数的一个实例。

You can just create an instance of the Runnable class with parameterized constructor.

MyRunnable obj = new MyRunnable(data);
handler.post(obj);

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