Thread演示

Thread类 — 线程简单演示

public class MainActivity extends AppCompatActivity{   
    @Override
    protected void onCreate(Bundle saveInstanceState){
        super.onCreate(saveInstanceState);
        //setContentView(R.layout.activity_main);
        System.out.println("1.main thread...");
        //创建并启动一个子线程
        Thread thread = new Thread(new Runnable(){
            @Override
            public void run(){
                //...
            try{
                System.out.println("2.sub thread...");
                Thread.sleep(2000);
                System.out.println("3.sub thread...");
            }catech(InterruptedException e){
                    e.printStackTrace();
                }
            }
        });
        thread.start();
        
        System.out.println("4.main thread...");
    }
}// 输出顺序为 1 4 2 3