安卓通过包名获取指定app的日志记录

思路

通过app包名获取app的pid，再使用logcat获取log

通过包名获取pid

// 参考菜鸟教程linux ps命令, 有一定差异
// USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
ps | grep packageName

// 直接返回包名对应应用当前的pid
pidof "包名"

// 安卓app获取自身的pid
int pid = android.os.Process.myPid();

使用logcat获取log

// -d 不阻塞
// -v 筛出不要的日志 chatty 我的app日志输出较快，被禁言了(狗头)
logcat -d | grep pid | grep -v chatty >> /sdcard/logs/log_file.txt

logcat -d --pid=$(pidof -s pkg_name)

代码实现（仅供参考）

/**
     * 安卓手机记录日志
     * 以pid筛选，所以app要换线程了记得调用
     * log -d 不阻塞 -c 清空缓存log
     * grep -v 筛选（不要的）
     */
    public void recordLogs(String packageName, String mark){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy_MM_dd", Locale.CHINA);
        //此app的pid
        //int pid = android.os.Process.myPid();
        String pidStr = execShell("pidof "+ packageName +" \n");
        int pid = -1;
        try {
            pid = Integer.parseInt(pidStr.substring(0, pidStr.length() - 1));
        }catch (NumberFormatException e){
            e.printStackTrace();
            return;
        }
        Log.d("yayale", "pid" + pid);
        String shell = " logcat -d | grep " + pid + " | grep -v chatty >> /sdcard/logs/log_"+ mark + "_" + sdf.format(new Date()) + ".txt \n";
        execShell(shell);
        Log.d("yayale", "recorded log " + packageName);
    }

/**
     * 执行shell
     */
    public String execShell(String cmd) {
        Log.d("adb", "run shell:" + cmd);
        String result = "";
        try {
            DataOutputStream dataOutputStream;
            Process process = Runtime.getRuntime().exec("su \n");
            OutputStream outputStream = process.getOutputStream();
            dataOutputStream = new DataOutputStream(outputStream);
            dataOutputStream.writeBytes(cmd + "\n");
            dataOutputStream.flush();
            dataOutputStream.close();
            outputStream.close();
            //获取执行结果
            BufferedReader reader = null;
            reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            StringBuilder output = new StringBuilder();
            int read;
            char[] buffer = new char[4096];
            while ((read = reader.read(buffer)) > 0) {
                output.append(buffer, 0, read);
            }
            reader.close();
            result = output.toString();
            Log.d("adb", result);
            process.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

参考

思路
pid获取-1-ps
pid获取-2-pidof
pid获取-3-pidof-参数
logcat
chatty
ps
grep
adb执行结果

本文地址：https://blog.csdn.net/G_eto/article/details/107519422