Question

任何人都可以告诉如何在文本文件中编写异常并将其保存在android

中的sdcard中

由于

Answer 1

试试这个

try{
..........
}catch(Exception e){
    PrintWriter pw = new PrintWriter(new FileOutputStream("Log"));     
    e.printStackTrace(pw);
}

或查看此博客

http://www.digitalprank.org/how-to-redirect-console-output-to-file-using-java/

Answer 2

我认为您正在尝试在应用程序中实现崩溃/错误日志记录系统。 this is a superb way to do it

或者您始终可以使用e.printStackTrace（）并将其转换为字符串并将其写入SD卡上的文本文件。查看here

代码而不是使用电子邮件意图只需打开SD卡中的.txt文件并将字符串写入其中。

Answer 3

您也可以创建一个Logger-Class。

def measure(&block)
  start = Time.now
  block.call
  Time.now - start
end

# t1 and t2 is the executing time for the code blocks.
t1 = measure { sleep(1) }

t2 = measure do
  sleep(2)
end

只需更改SD卡的路径即可。

在OnCreate-Method

中创建一个新实例

    /// <summary>
    /// Init the logger
    /// </summary>
    public LogUtils()
    {
        String path = Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/MyAppFolder";

        logFilePath = System.IO.Path.Combine(path, "LogFile.txt");

        if (!System.IO.File.Exists(logFilePath))
        {
            using (System.IO.StreamWriter writer = new System.IO.StreamWriter(logFilePath, true))
            {
                writer.WriteLine("Starting logging at " + DateTime.Now.ToString() + "\n");
            }
        }
    }

    /// <summary>
    /// Logs new messages
    /// </summary>
    /// <param name="message"></param>
    public void Log(String message)
    {
        using (System.IO.StreamWriter writer = new System.IO.StreamWriter(logFilePath, true))
        {
            writer.WriteLine(DateTime.Now.ToString() + " : " + message + "\n");
        }
    }

并记录消息

    protected override void OnCreate(Bundle bundle) 
    {
        base.OnCreate(bundle);

        LogUtils Logger = new LogUtils();

如何在文本文件中编写异常并将其保存在android中的sdcard中

3 个答案: