打印 logcat 保存到直接到文件 android

    private void saveLogCat() {
        try{
                            /*命令的准备*/
            ArrayList<String> getLog = new ArrayList<String>();
            getLog.add("logcat");
            getLog.add("-d");
            getLog.add("-v");
            getLog.add("time");
            ArrayList<String> clearLog = new ArrayList<String>();
            clearLog.add("logcat");
            clearLog.add("-c");

            Process process = Runtime.getRuntime().exec(getLog.toArray(new String[getLog.size()]));//抓取当前的缓存日志

            BufferedReader buffRead = new BufferedReader(new InputStreamReader(process.getInputStream()));//获取输入流
            String str = null;
            //Date date = new Date(System.currentTimeMillis());
            //String time = format.format(date);
            File logFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+"idstLog.txt");//打开文件
            //Log.i(TAG, "thread");
            while((str=buffRead.readLine())!=null){//循环读取每一行
                BufferedWriter bw = new BufferedWriter(new FileWriter(logFile, true));
                bw.write(str);
                bw.write("\r\n");
                bw.flush();
            }
            Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));
//            Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));//清除是为了下次抓取不会从头抓取
        }catch(Exception e){
            e.printStackTrace();
        }
//        try {
//            Process process = Runtime.getRuntime().exec("logcat -e");
//            BufferedReader bufferedReader = new BufferedReader(
//                    new InputStreamReader(process.getInputStream()));
//
//            StringBuilder log=new StringBuilder();
//            String line;
//            while ((line = bufferedReader.readLine()) != null) {
//                log.append(line);
//            }
//            LogToFileUtils.write(log);
//            LogUtils.i(""+log);
//        } catch (IOException e) {
//            e.printStackTrace();
//            LogUtils.i(""+e.getMessage());
//        }
    }

打印 自己apk log