首页 > 代码库 > [Android Pro] Android7.0系统 关于Android获取流量计数TrafficStats.getUidRxBytes(uid)和TrafficStats.getUidTxBytes(uid)返回-1解决方案
[Android Pro] Android7.0系统 关于Android获取流量计数TrafficStats.getUidRxBytes(uid)和TrafficStats.getUidTxBytes(uid)返回-1解决方案
reference : http://blog.csdn.net/zhangyong7112/article/details/54574214
最近一个关于流量的项目在Android7.0系统的手机上运行,一直获取不到流量的使用数据,查看源码然后发现TrafficStats.getUidRxBytes(uid)和TrafficStats.getUidTxBytes(uid)一直都是返回的-1,
// 获取某个网络UID接收和发送字节的总和long total = TrafficStats.getUidRxBytes(uid) + TrafficStats.getUidTxBytes(uid);
这就纳闷了!!!然后多方查找资料,问了公司的大神,给我说可以在“/proc/uid_stat/"文件夹中读取数据。后来总算是出来了。。。 不说了 贴代码
if (total == 0 || (TrafficStats.getUidRxBytes(uid) == -1) && (TrafficStats.getUidTxBytes(uid) == -1)) { total = getTotalBytesManual(uid);}
/** * 通过uid查询文件夹中的数据 * @param localUid * @return */ private Long getTotalBytesManual(int localUid) {// Log.e("BytesManual*****", "localUid:" + localUid); File dir = new File("/proc/uid_stat/"); String[] children = dir.list(); StringBuffer stringBuffer = new StringBuffer(); for (int i = 0; i < children.length; i++) { stringBuffer.append(children[i]); stringBuffer.append(" "); }// Log.e("children*****", children.length + "");// Log.e("children22*****", stringBuffer.toString()); if (!Arrays.asList(children).contains(String.valueOf(localUid))) { return 0L; } File uidFileDir = new File("/proc/uid_stat/" + String.valueOf(localUid)); File uidActualFileReceived = new File(uidFileDir, "tcp_rcv"); File uidActualFileSent = new File(uidFileDir, "tcp_snd"); String textReceived = "0"; String textSent = "0"; try { BufferedReader brReceived = new BufferedReader(new FileReader(uidActualFileReceived)); BufferedReader brSent = new BufferedReader(new FileReader(uidActualFileSent)); String receivedLine; String sentLine; if ((receivedLine = brReceived.readLine()) != null) { textReceived = receivedLine;// Log.e("receivedLine*****", "receivedLine:" + receivedLine); } if ((sentLine = brSent.readLine()) != null) { textSent = sentLine;// Log.e("sentLine*****", "sentLine:" + sentLine); } } catch (IOException e) { e.printStackTrace();// Log.e("IOException*****", e.toString()); }// Log.e("BytesManualEnd*****", "localUid:" + localUid); return Long.valueOf(textReceived).longValue() + Long.valueOf(textSent).longValue(); }
[Android Pro] Android7.0系统 关于Android获取流量计数TrafficStats.getUidRxBytes(uid)和TrafficStats.getUidTxBytes(uid)返回-1解决方案
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。