java - 在自定义线程类中执行可运行参数

Question

我想在主线程中定义我的runnable，然后将其作为参数传递到另一个线程中，如下所示 -

final Runnable runnable = new Runnable() {
            @Override
            public void run() {

                Log.i("Running runnable","");
            }
        };

Handler handler = new Handler() {

    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);

        text.setText(msg.obj.toString());
    }
};

ThreadTest handlerThreadTest = new ThreadTest(runnable, handler);
                handlerThreadTest.start();

ThreadTest 类定义如下 -

public class ThreadTest extends Thread {

private Handler handler;
private Runnable runnable;

public ThreadTest(Runnable runnable, Handler handler) {

    this.handler = handler;
    this.runnable = runnable;
}

@Override
public void run() {
    super.run();

    runnable.run();

    Message msg = handler.obtainMessage();
    msg.obj = "YUSSSSSS!";
    handler.sendMessage(msg);
} }

我能够向我的处理程序发送“YUSSSSSS”消息，但 runnable.run() 似乎不起作用，因为我在 logcat 中看不到任何内容。

我哪里弄错了？

Answer 1

Logcat 倾向于删除空消息，在日志中添加一些字符，您可能会在“Running runnable”标签下看到一些内容

Log.i("RunnableImpl", "Running runnable");