通过实现Runnable接口来创建线程

àì夳堔傛蜴生んèń 2022-08-19 13:19 257阅读 0赞

1、布局文件

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

2、MainActivity

public class MainActivity extends Activity implements Runnable{
    
    	private Thread thread;//声明线程对象
    	int i;//循环变量
    	
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            Button startButton = (Button)findViewById(R.id.button1);
            startButton.setOnClickListener(new OnClickListener() {
    			@Override
    			public void onClick(View v) {
    				i = 0;
    				thread = new Thread(MainActivity.this);//创建一个线程
    				thread.start();//开启线程
    			}
    		});
            Button stopButton = (Button)findViewById(R.id.button2);
            stopButton.setOnClickListener(new OnClickListener() {
    			@Override
    			public void onClick(View v) {
    				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;
    		}
    		super.onDestroy();
    	}
    }

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