Android线程计时器实现

cocos2dx的计时器很好用，但当app进入后台，其计时器会pause掉，如果想要一个稳恒计时器就得自己去实现完成了，在Cocos2d-x for ios中我们可以利用NSTimer类并结合objc++来实现，非常好用。在Android平台我们就不得不用java类和jni来实现，计时器很多时候是用来刷新UI，所以还得考虑opengl线程调用问题

下面我贴了一个用java线程来实现的类，这个是项目正在使用的部分代码。一个是秒计时器，用于倒计时使用；一种是毫秒计时器，取网络数据包时使用

package com.iGamer;

import org.cocos2dx.lib.Cocos2dxActivity;
import org.cocos2dx.lib.Cocos2dxGLSurfaceView;

public class TimerJavaToC
{

    public static String SECOND_TIMER_NAME = "SECOND_TIMER_NAME";
    public static String MILSECOND_TIMER_NAME = "MILSECOND_TIMER_NAME";

    private Cocos2dxGLSurfaceView mGLSurfaceView = null;

    private  Cocos2dxActivity mActivity;

    // 定义jni调用函数
    private static native void secondTickHandler();
     // 调用c++获取网络包
    private static native void milsecondTickHandler();

    private boolean _isSecondRunFlag = false;
    private boolean _isMilSecondRunFlag = false;

    public TimerJavaToC(Cocos2dxActivity act)
    {
        mActivity = act;
        mGLSurfaceView = Cocos2dxGLSurfaceView.getInstance();
        _isSecondRunFlag = true;
        _isMilSecondRunFlag = true;
        init();
    }
    private void init()
    {
         Thread secondThread = new Thread(new Runnable()
         {
                public void run()
                {
                    try
                    {
                        if (!_isSecondRunFlag)
                        {
                            Thread.currentThread().interrupt(); //方法调用终止线程
                            return ; //跳出run方法
                        }
                        while (_isSecondRunFlag)
                        {
                            //暂停一秒
                            Thread.sleep(1000);
                            mGLSurfaceView.queueEvent( new Runnable()
                            {
                                @Override
                                public void run()
                                {
                                    //调用jni
                                    TimerJavaToC.secondTickHandler();
                                }
                            });
                        }
                    }
                    catch(Throwable t)
                    {
                        //jest end the thread
                    }
                }

         });
         secondThread.start();
         secondThread.setName(SECOND_TIMER_NAME);

         Thread milsecondThread = new Thread(new Runnable()
         {
                public void run()
                {
                    try
                    {
                        if (!_isMilSecondRunFlag)
                        {
                            Thread.currentThread().interrupt(); //方法调用终止线程
                            return ; //跳出run方法
                        }
                        while (_isMilSecondRunFlag)
                        {
                            //暂停一毫秒
                            Thread.sleep(1);
                            mGLSurfaceView.queueEvent( new Runnable()
                            {
                                @Override
                                public void run()
                                {
                                    //调用jni     \
                                    TimerJavaToC.milsecondTickHandler();
                                }
                            });
                        }
                    }
                    catch(Throwable t)
                    {
                        //jest end the thread
                    }
                }

         });
         milsecondThread.start();
         milsecondThread.setName(MILSECOND_TIMER_NAME);
    }
    public void stopAllThread()
    {
        _isMilSecondRunFlag = false;
        _isSecondRunFlag = false;
    }
}