主线程与其他线程之间的Android通信(Android communication between main thread and other thread)

 我想动态地改变textview的文本，但是如果我想制作一个游戏线程，我将需要相同的逻辑，所以我需要在主要的和第二个之间进行通信。 
 
 我有文件： 
 
 主要活动 
 
public class MainActivity extends ActionBarActivity {

    public static Handler mHandler;
    Runnable thread = new SampleThread();
    TextView txt1 = (TextView) findViewById(R.id.txt1);
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ActionBar actionBar = getSupportActionBar();
        actionBar.hide();

        //hiding status bar
        if (Build.VERSION.SDK_INT < 16) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
        } else {
            View decorView = getWindow().getDecorView();
            int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
            decorView.setSystemUiVisibility(uiOptions);
        }
        setContentView(R.layout.activity_main);


        mHandler = new Handler() {
            public void handleMessage(Message msg) {
                // process incoming messages here
                // i want to change the text of txt1 here
            }
        };
        new Thread(thread).start();


    }
}
 
 SampleThread 
 
package com.example.katsar0v.myapplication;

import android.util.Log;

/**
 * Created by Katsar0v on 1/21/2015.
 */
public class SampleThread implements Runnable {

    @Override
    public void run() {
        int two = 0;
        while(two<10) {
            two++;
            try {
                Thread.sleep(1000);

                //instead of logging, i want to send the text to main UI
                Log.d("MSG", String.valueOf(two + "sec"));
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
 
 我看到的问题是，当我的线程在另一个文件中时，如何用处理程序更改文本？ 或者我应该在第一个类中使第二个类静态（当代码变得非常长时，我应该怎么做，它不能都在一个文件中）？ 

I want to change dynamically the text of a textview, but I will need the same logic if I want to make a game thread, so I need to make the communication between the main one and the second one.
 
I have the files :
 
MainActivity
 
public class MainActivity extends ActionBarActivity {

    public static Handler mHandler;
    Runnable thread = new SampleThread();
    TextView txt1 = (TextView) findViewById(R.id.txt1);
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ActionBar actionBar = getSupportActionBar();
        actionBar.hide();

        //hiding status bar
        if (Build.VERSION.SDK_INT < 16) {
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
        } else {
            View decorView = getWindow().getDecorView();
            int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
            decorView.setSystemUiVisibility(uiOptions);
        }
        setContentView(R.layout.activity_main);


        mHandler = new Handler() {
            public void handleMessage(Message msg) {
                // process incoming messages here
                // i want to change the text of txt1 here
            }
        };
        new Thread(thread).start();


    }
}
 
SampleThread
 
package com.example.katsar0v.myapplication;

import android.util.Log;

/**
 * Created by Katsar0v on 1/21/2015.
 */
public class SampleThread implements Runnable {

    @Override
    public void run() {
        int two = 0;
        while(two<10) {
            two++;
            try {
                Thread.sleep(1000);

                //instead of logging, i want to send the text to main UI
                Log.d("MSG", String.valueOf(two + "sec"));
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
 
The problem I see is, how do I change the text with the handler, when my thread is in another file? Or should I make the second class static within the first one (and what should I do when the code gets really long, it can't be all in one file)?

原文：https://stackoverflow.com/questions/28072858