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;

    }

}