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  • TrafficStats——流量统计类的范例,获取实时网速

    2.3开始android就提供来这个类的API,这样我们就可以方便的用他来实现统计手机流量来。这个类其实也很简单,我贴上他的几个方法,大家一看就知道怎么用了。

    static long getMobileRxBytes() //获取通过Mobile连接收到的字节总数,不包含WiFi
    static long getMobileRxPackets() //获取Mobile连接收到的数据包总数
    static long getMobileTxBytes() //Mobile发送的总字节数
    static long getMobileTxPackets() //Mobile发送的总数据包数
    static long getTotalRxBytes() //获取总的接受字节数,包含Mobile和WiFi等
    static long getTotalRxPackets() //总的接受数据包数,包含Mobile和WiFi等
    static long getTotalTxBytes() //总的发送字节数,包含Mobile和WiFi等
    static long getTotalTxPackets() //发送的总数据包数,包含Mobile和WiFi等
    static long getUidRxBytes(int uid) //获取某个网络UID的接受字节数,某一个进程的总接收量
    static long getUidTxBytes(int uid) //获取某个网络UID的发送字节数,某一个进程的总发送量

    下面说我做实时网速的思路:

    1.获得当前的总接受数据,getTotalRxPackets()

    2.每隔几秒再获取一次总接收的数据

    3.讲最新获取的数据减去之前获取的数据并且除以间隔的秒数,就得到了每秒平均的网速b/s,最后进行单位转换为kb、Mb等等

    实现:

    1.得到当前网速的方法

    初始时给total_data一个值:

    private long total_data = TrafficStats.getTotalRxBytes();

    之后每次获取的数值要减去total_data再除以间隔秒数,并且将total重新赋值为最新的。

        /**
         * 核心方法,得到当前网速
         * @return
         */
        private int getNetSpeed() {  
            long traffic_data = TrafficStats.getTotalRxBytes() - total_data;
            total_data = TrafficStats.getTotalRxBytes();
            return (int)traffic_data /count ;
        }

    2.周期性的获取网速

    /**
         * 定义线程周期性地获取网速
         */
        private Runnable mRunnable = new Runnable() {
            @Override
            public void run() {
                //定时器
                mHandler.postDelayed(mRunnable, count * 1000);
                Message msg = mHandler.obtainMessage();
                msg.what = 1;
                msg.arg1 = getNetSpeed();
                mHandler.sendMessage(msg);
            }
        };

    3.单位转换

    @Override
        public void onCreate() {
            super.onCreate();
            
            mHandler = new Handler(){
                @Override
                public void handleMessage(Message msg) {
                    super.handleMessage(msg);
                    if (msg.what == 1) {
                        //float real_data = (float)msg.arg1;
                        if(msg.arg1  > 1024 ){
                            System.out.println(msg.arg1 / 1024 + "kb/s");                    
                        }
                        else{
                            System.out.println(msg.arg1 + "b/s");    
                        }
                    }
                }
            };
    
        }

    4.启动handler和停止handler

    PS:服务开始就执行runnable中的方法,并且runnable中设置handler循环执行。执行runnable中run()方法时,将网速包装到message中,交给handler进行单位转换并显示(这里在handler中进行单位转换是为了方便显示到ui中)

    /**
         * 启动服务时就开始启动线程获取网速
         */
        @Override
        public void onStart(Intent intent, int startId) {
            mHandler.postDelayed(mRunnable, 0);
        };
    
        /**
         * 在服务结束时删除消息队列
         */
        @Override
        public void onDestroy() {
            mHandler.removeCallbacks(mRunnable);
            super.onDestroy();
        };
    @Override
        public void onCreate() {
            super.onCreate();
            
            mHandler = new Handler(){
                @Override
                public void handleMessage(Message msg) {
                    super.handleMessage(msg);
                    if (msg.what == 1) {
                        //float real_data = (float)msg.arg1;
                        if(msg.arg1  > 1024 ){
                            System.out.println(msg.arg1 / 1024 + "kb/s");                    
                        }
                        else{
                            System.out.println(msg.arg1 + "b/s");    
                        }
                    }
                }
            };

    最后,全部代码

    Service:

    package com.kale.netspeed;
    
    import android.app.Service;
    import android.content.Intent;
    import android.net.TrafficStats;
    import android.os.Handler;
    import android.os.IBinder;
    import android.os.Message;
    
    
    /**
     * @author:Jack Tony
     * @tips  :实时获取当前网速的service
     * @date  :2014-9-24
     */
    public class Net_Service extends Service {
    
        private long total_data = TrafficStats.getTotalRxBytes();
        private Handler mHandler;
        //几秒刷新一次
        private final int count = 5;
    
        /**
         * 定义线程周期性地获取网速
         */
        private Runnable mRunnable = new Runnable() {
            @Override
            public void run() {
                //定时器
                mHandler.postDelayed(mRunnable, count * 1000);
                Message msg = mHandler.obtainMessage();
                msg.what = 1;
                msg.arg1 = getNetSpeed();
                mHandler.sendMessage(msg);
            }
        };
        
        @Override
        public void onCreate() {
            super.onCreate();
            
            mHandler = new Handler(){
                @Override
                public void handleMessage(Message msg) {
                    super.handleMessage(msg);
                    if (msg.what == 1) {
                        //float real_data = (float)msg.arg1;
                        if(msg.arg1  > 1024 ){
                            System.out.println(msg.arg1 / 1024 + "kb/s");                    
                        }
                        else{
                            System.out.println(msg.arg1 + "b/s");    
                        }
                    }
                }
            };
            
            
    
        }
        
        /**
         * 核心方法,得到当前网速
         * @return
         */
        private int getNetSpeed() {  
            long traffic_data = TrafficStats.getTotalRxBytes() - total_data;
            total_data = TrafficStats.getTotalRxBytes();
            return (int)traffic_data /count ;
        }
    
        /**
         * 启动服务时就开始启动线程获取网速
         */
        @Override
        public void onStart(Intent intent, int startId) {
            mHandler.postDelayed(mRunnable, 0);
        };
    
        /**
         * 在服务结束时删除消息队列
         */
        @Override
        public void onDestroy() {
            mHandler.removeCallbacks(mRunnable);
            super.onDestroy();
        };
    
        @Override
        public IBinder onBind(Intent intent) {
            return null;
        }
    
    
    
    }
    <service android:name="com.kale.netspeed.Net_Service"/>

    Activity:

    package com.kale.netspeed;
    
    import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            
            startService(new Intent(MainActivity.this,Net_Service.class));
        }
    }

    参考自:http://gundumw100.iteye.com/blog/1294167

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  • 原文地址:https://www.cnblogs.com/tianzhijiexian/p/3990179.html
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