U3D导出到安卓apk的日志打印管理

虽然U3D提供真机调试，但是由于内外网的隔离，使得这个流程比较麻烦和不太靠谱。真机调试的另一个方法是查看游戏运行导出的Log日志（U3D的Application.persistentDataPath路径下），下面是一个常用的log日志类

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;

public class OutputLog : MonoBehaviour
{
public static OutputLog instance = null;
private string err;
private string log;
private string filePath;
private bool isDebugMode = false;

void Awake()
{
filePath = Application.persistentDataPath + "/P1_log.txt";
if (System.IO.File.Exists(filePath))
{
File.Delete(filePath);
}
instance = this;
Application.RegisterLogCallback(HandleLog);
Debug.Log(filePath);
}

void OnDestroy()
{
instance = null;
Application.RegisterLogCallback(null);
}

private List<string> writeTxt = new List<string>();
private void HandleLog(string logString, string stackTrace, LogType type)
{
if (type == LogType.Error)
{
err += "\n";
err += logString;
err += "\n";
err += stackTrace;
writeTxt.Add("[Err]" + logString);
writeTxt.Add(stackTrace);
}
else
{
log += "\n";
log += logString;
writeTxt.Add("[log]" + logString);
writeTxt.Add(stackTrace);
}
}

void Start ()
{
GameObject.Find("Cube").AddComponent<T1>();
}

void Update ()
{
if (writeTxt.Count <= 0)
{
return;
}
string[] temp = writeTxt.ToArray();
writeTxt.Clear();
using (StreamWriter writer = new StreamWriter(filePath, true, Encoding.UTF8))
{
foreach (string t in temp)
{
writer.WriteLine(t);
}
}
}
}