读取Log日志并打印到sdcard

@SuppressLint("SimpleDateFormat")
    private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    public static void LogWrite() {
        File file = new File(Constants.APP_PATH_LOG);
        if (!file.exists() || !file.isDirectory()) {
            file.mkdirs();
        }
        FileWriter fileWriter;
        StringBuilder log;
        try {
            Process process = Runtime.getRuntime().exec("logcat -d -v time");
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));

            log = new StringBuilder();
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                log.append(line);
                log.append("
");
            }
            fileWriter = new FileWriter(Environment.getExternalStorageDirectory() + "/" + “log-” + sdf.format(new Date()).substring(0, 10) + ".txt", true);
            fileWriter.write(log.toString());29             fileWriter.flush();
            fileWriter.close();
            Runtime.getRuntime().exec("logcat -c");32         } catch (IOException e) {

        } catch (OutOfMemoryError e) {
            
        }
       
    }