Fixed: #40 & #19 incorrect network traffic in some high level sdk

src/com/netease/qa/emmagee/utils/TrafficInfo.java

@@ -20,6 +20,7 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.RandomAccessFile;
 
+import android.net.TrafficStats;
 import android.util.Log;
 
 /**
@@ -30,6 +31,7 @@ import android.util.Log;
 public class TrafficInfo {
 
 	private static final String LOG_TAG = "Emmagee-" + TrafficInfo.class.getSimpleName();
+	private static final int UNSUPPORTED = -1;
 
 	private String uid;
 
@@ -44,21 +46,34 @@ public class TrafficInfo {
 	 * @return total traffic include received and send traffic
 	 */
 	public long getTrafficInfo() {
+
 		Log.i(LOG_TAG, "get traffic information");
 		Log.d(LOG_TAG, "uid===" + uid);
+
+		long rcvTraffic = UNSUPPORTED;
+		long sndTraffic = UNSUPPORTED;
+
+		// Use getUidRxBytes and getUidTxBytes to get network traffic,these API
+		// return both tcp and udp usage
+		rcvTraffic = TrafficStats.getUidRxBytes(Integer.parseInt(uid));
+		sndTraffic = TrafficStats.getUidTxBytes(Integer.parseInt(uid));
+
+		if (rcvTraffic == UNSUPPORTED || sndTraffic == UNSUPPORTED) {
+			return UNSUPPORTED;
+		}
+
 		RandomAccessFile rafRcv = null, rafSnd = null;
 		String rcvPath = "/proc/uid_stat/" + uid + "/tcp_rcv";
 		String sndPath = "/proc/uid_stat/" + uid + "/tcp_snd";
-		long rcvTraffic = -1;
-		long sndTraffic = -1;
+
 		try {
 			rafRcv = new RandomAccessFile(rcvPath, "r");
 			rafSnd = new RandomAccessFile(sndPath, "r");
 			rcvTraffic = Long.parseLong(rafRcv.readLine());
 			sndTraffic = Long.parseLong(rafSnd.readLine());
 		} catch (FileNotFoundException e) {
-			rcvTraffic = -1;
-			sndTraffic = -1;
+			rcvTraffic = UNSUPPORTED;
+			sndTraffic = UNSUPPORTED;
 		} catch (NumberFormatException e) {
 			Log.e(LOG_TAG, "NumberFormatException: " + e.getMessage());
 			e.printStackTrace();
@@ -73,13 +88,12 @@ public class TrafficInfo {
 				if (rafSnd != null)
 					rafSnd.close();
 			} catch (IOException e) {
-				Log.i(LOG_TAG, "close randomAccessFile exception: " + e.getMessage());
+				Log.w(LOG_TAG, "Close randomAccessFile exception: " + e.getMessage());
 			}
 		}
-		Log.d(LOG_TAG, "rcvTraffic===" + rcvTraffic);
-		Log.d(LOG_TAG, "sndTraffic===" + sndTraffic);
-		if (rcvTraffic == -1 || sndTraffic == -1) {
-			return -1;
+
+		if (rcvTraffic == UNSUPPORTED || sndTraffic == UNSUPPORTED) {
+			return UNSUPPORTED;
 		} else
 			return rcvTraffic + sndTraffic;
 	}