Android:新线程Runnable在主线程中执行

Question

我正在尝试在活动的onCreate()中创建一个新线程,但是不是创建一个新线程并在其中执行runnable的代码,可运行代码在我的程序的主线程中执行.似乎永远不会创建新线程.

onCreate()代码:

@Override
protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.monster_layout);
    runningMonsterViewActivity = this;
    Thread.currentThread().setName("Main Thread");
    Log.v(TAG, "onCreate() has run");
    Thread genThread = new Thread(new TestRunnable());
    genThread.run();
}

可运行的代码:

import android.os.Handler;
import android.util.Log;

public class TestRunnable implements Runnable{
String TAG = "TestRunnable";

    public TestRunnable()
    {
    //  mainThreadHandler = h;
    }
    @Override
    public void run() {
        for(int i=0; i < 1000; i++){
            Log.v(TAG, new Integer(i).toString());
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }
}

我在执行时暂停代码时得到的堆栈跟踪:

DalvikVM[localhost:8621] (Suspended)    
    Thread [<1> Main Thread] (Suspended)    
        VMThread.sleep(long, int) line: not available [native method]   
        Thread.sleep(long, int) line: 1306  
        Thread.sleep(long) line: 1286   
        TestRunnable.run() line: 18 
        Thread.run() line: 1096 
        MonsterViewActivity.onCreate(Bundle) line: 49   
        Instrumentation.callActivityOnCreate(Activity, Bundle) line: 1047   
        ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2627  
        ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2679   
        ActivityThread.access$2300(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 125 
        ActivityThread$H.handleMessage(Message) line: 2033  
        ActivityThread$H(Handler).dispatchMessage(Message) line: 99 
        Looper.loop() line: 123 
        ActivityThread.main(String[]) line: 4627    
        Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]  
        Method.invoke(Object, Object...) line: 521  
        ZygoteInit$MethodAndArgsCaller.run() line: 868  
        ZygoteInit.main(String[]) line: 626 
        NativeStart.main(String[]) line: not available [native method]  
    Thread [<6> Binder Thread #2] (Suspended)   
    Thread [<5> Binder Thread #1] (Suspended)   
    Daemon System Thread [<3> Signal Catcher] (Suspended)   
    Daemon System Thread [<2> HeapWorker] (Suspended)   

Answer 1

你只需要换genThread.run();到genThread.start();

现在,您的代码run()从主线程调用该方法.start()实际上将启动一个新线程,并将run()在该线程上执行该方法,这是所需的行为.