【Android开发】线程与消息处理-通过实现Runnable接口来创建线程

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="开始" />
        
         <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="结束" />


</LinearLayout>

界面效果如图

package com.example.test;  
  
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
  
public class MainActivity extends Activity implements Runnable{  
	private Thread thread;
	int i=0;
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);


        Button startButton=(Button)findViewById(R.id.button1);//获取开始按钮
        startButton.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				 i=0;
				thread=new Thread(MainActivity.this);//创建一个线程
				thread.start();//开启线程
			}
		});
        
        Button endButton=(Button)findViewById(R.id.button2);//获取结束按钮
        endButton.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				 if(thread!=null){
					 thread.interrupt();//中断线程
					 thread=null;
				 }
				 Log.i("提示:", "中断线程");
			}
		});
	}


	@Override
	public void run() {
		while(!Thread.currentThread().isInterrupted()){
			i++;
			Log.i("循环变量", String.valueOf(i));
		}
		
	}


	@Override
	protected void onDestroy() {
		 if(thread!=null){
			 thread.interrupt();//中断线程
			 thread=null;
		 }
		 Log.i("提示:", "因Activity结束中断线程");
		super.onDestroy();
	}


}

运行结果和按键之后的效果如图所示

转载请注明出处：http://blog.csdn.net/acmman/article/details/46337017