源碼簡介
在網上找到的一個小例子，可以統計每個應用的網絡流量，區分移動網絡與WIFI 技術點： 使用TrafficStats記錄流量變化 使用Service,BroadcastReceiver監控網絡狀態變化 使用sqlite記錄各個應用已用流量數據(只能統計應用安裝后使用的流量，之前用掉的不能統計)。
源碼運行截圖

代碼片段：

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
  
        txtView = (TextView) findViewById(R.id.textView1); 
  
        Intent intent = new Intent(MainActivity.this, TrafficService.class); 
        bindService(intent, mConnection, Context.BIND_AUTO_CREATE); 
  
        dbManager = new DbManager(this); 
        findViewById(R.id.button1).setOnClickListener(new OnClickListener() { 
  
            @Override 
            public void onClick(View v) { 
                if (trafficService == null) { 
                    txtView.setText("服務未綁定"); 
                } else { 
                    trafficService.logRecord(); 
                    Map<string, trafficinfo=""> list = dbManager.queryTotal(); 
                    StringBuilder sb = new StringBuilder(); 
                    for (TrafficInfo info : list.values()) { 
                        sb.append(info.appName + " - 流量信息:\r\n"); 
                        sb.append( 
                                "移動網絡接收的流量" 
                                        + Formatter.formatFileSize( 
                                                MainActivity.this, 
                                                info.mobileRx)).append("\r\n"); 
                        sb.append( 
                                "移動網絡發送的流量" 
                                        + Formatter.formatFileSize( 
                                                MainActivity.this, 
                                                info.mobileTx)).append("\r\n"); 
                        sb.append( 
                                "WIFI接收的流量" 
                                        + Formatter.formatFileSize( 
                                                MainActivity.this, info.wifiRx)) 
                                .append("\r\n"); 
                        sb.append( 
                                "WIFI發送的流量" 
                                        + Formatter.formatFileSize( 
                                                MainActivity.this, info.wifiTx)) 
                                .append("\r\n"); 
                        sb.append("--------------------").append("\r\n"); 
                        txtView.setText(sb); 
                    } 
                } 
            } 
        }); 
    }</string,> 

源碼鏈接：http://down.51cto.com/900943