Android读取logcat的信息

private static String getLogcatInfo(){
        String strLogcatInfo = "";        
        try{
            ArrayList<String> commandLine = new ArrayList<String>();
            commandLine.add("logcat");   
            commandLine.add( "-d"); 

            commandLine.add("*:E"); // 过滤所有的错误信息

            ArrayList<String> clearLog = new ArrayList<String>();  //设置命令  logcat -c 清除日志
            clearLog.add("logcat");
            clearLog.add("-c");
            
            Process process = Runtime.getRuntime().exec(commandLine.toArray(new String[commandLine.size()]));   
            BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(process.getInputStream()));
                    
            String line = null;
            while ((line = bufferedReader.readLine()) != null) {                  
                Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));
                strLogcatInfo = strLogcatInfo + line + "\n";
            }

            bufferedReader.close();
        }　　
        catch(Exception ex)
        {
             process.destroy();
        }        
        return strLogcatInfo;
    }