最近在寫一個app，需要做本地化的數據存儲。本來依據宣雨松的教程（Unity3D研究院之使用C＃語言建立本地數據庫），利用sqlite做了個小型的本地化數據庫，在電腦端已經運行良好，可以到了手機上卻無法讀取、存儲數據庫。無奈，只好另尋它法。
Unity對於簡單的數據本地化存儲已經有 了PlayerPrefs類，該類使用方便，容易理解。 PlayerPrefs類以標準的“”鍵-值“方式存儲，類似Dictionary。但是， PlayerPrefs不能存儲數組，以下代碼對 PlayerPrefs進行了擴充，實現了存儲數組的功能，在實際中使用十分靈活。
using UnityEngine;
using System;
public static class Playerprefs
{
#region Vector 3
/// <summary>
/// Stores a Vector3 value into a Key
/// </summary>
public static bool SetVector3(string key, Vector3 vector)
{
return SetFloatArray(key, new float[3] { vector.x, vector.y, vector.z });
}
/// <summary>
/// Finds a Vector3 value from a Key
/// </summary>
public static Vector3 GetVector3(string key)
{
float[] floatArray = GetFloatArray(key);
if (floatArray.Length < 3)
return Vector3.zero;
return new Vector3(floatArray[0], floatArray[1], floatArray[2]);
}
#endregion
#region Bool Array
/// <summary>
/// Stores a Bool Array or Multiple Parameters into a Key
/// </summary>
public static bool SetBoolArray(string key, params bool[] boolArray)
{
if (boolArray.Length == 0) return false;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < boolArray.Length - 1; i++)
sb.Append(boolArray[i]).Append("|");
sb.Append(boolArray[boolArray.Length - 1]);
try { PlayerPrefs.SetString(key, sb.ToString()); }
catch (Exception e) { return false; }
return true;
}
/// <summary>
/// Returns a Bool Array from a Key
/// </summary>
public static bool[] GetBoolArray(string key)
{
if (PlayerPrefs.HasKey(key))
{
string[] stringArray = PlayerPrefs.GetString(key).Split("|"[0]);
bool[] boolArray = new bool[stringArray.Length];
for (int i = 0; i < stringArray.Length; i++)
boolArray[i] = Convert.ToBoolean(stringArray[i]);
return boolArray;
}
return new bool[0];
}
/// <summary>
/// Returns a Bool Array from a Key
/// Note: Uses default values to initialize if no key was found
/// </summary>
public static bool[] GetBoolArray(string key, bool defaultValue, int defaultSize)
{
if (PlayerPrefs.HasKey(key))
return GetBoolArray(key);
bool[] boolArray = new bool[defaultSize];
for (int i = 0; i < defaultSize; i++)
boolArray[i] = defaultValue;
return boolArray;
}
#endregion
#region Int Array
/// <summary>
/// Stores a Int Array or Multiple Parameters into a Key
/// </summary>
public static bool SetIntArray(string key, params int[] intArray)
{
if (intArray.Length == 0) return false;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < intArray.Length - 1; i++)
sb.Append(intArray[i]).Append("|");
sb.Append(intArray[intArray.Length - 1]);
try { PlayerPrefs.SetString(key, sb.ToString()); }
catch (Exception e) { return false; }
return true;
}
/// <summary>
/// Returns a Int Array from a Key
/// </summary>
public static int[] GetIntArray(string key)
{
if (PlayerPrefs.HasKey(key))
{
string[] stringArray = PlayerPrefs.GetString(key).Split("|"[0]);
int[] intArray = new int[stringArray.Length];
for (int i = 0; i < stringArray.Length; i++)
intArray[i] = Convert.ToInt32(stringArray[i]);
return intArray;
}
return new int[0];
}
/// <summary>
/// Returns a Int Array from a Key
/// Note: Uses default values to initialize if no key was found
/// </summary>
public static int[] GetIntArray(string key, int defaultValue, int defaultSize)
{
if (PlayerPrefs.HasKey(key))
return GetIntArray(key);
int[] intArray = new int[defaultSize];
for (int i = 0; i < defaultSize; i++)
intArray[i] = defaultValue;
return intArray;
}
#endregion
#region Float Array
/// <summary>
/// Stores a Float Array or Multiple Parameters into a Key
/// </summary>
public static bool SetFloatArray(string key, params float[] floatArray)
{
if (floatArray.Length == 0) return false;
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < floatArray.Length - 1; i++)
sb.Append(floatArray[i]).Append("|");
sb.Append(floatArray[floatArray.Length - 1]);
try
{
PlayerPrefs.SetString(key, sb.ToString());
}
catch (Exception e)
{
return false;
}
return true;
}
/// <summary>
/// Returns a Float Array from a Key
/// </summary>
public static float[] GetFloatArray(string key)
{
if (PlayerPrefs.HasKey(key))
{
string[] stringArray = PlayerPrefs.GetString(key).Split("|"[0]);
float[] floatArray = new float[stringArray.Length];
for (int i = 0; i < stringArray.Length; i++)
floatArray[i] = Convert.ToSingle(stringArray[i]);
return floatArray;
}
return new float[0];
}
/// <summary>
/// Returns a String Array from a Key
/// Note: Uses default values to initialize if no key was found
/// </summary>
public static float[] GetFloatArray(string key, float defaultValue, int defaultSize)
{
if (PlayerPrefs.HasKey(key))
return GetFloatArray(key);
float[] floatArray = new float[defaultSize];
for (int i = 0; i < defaultSize; i++)
floatArray[i] = defaultValue;
return floatArray;
}
#endregion
#region String Array
/// <summary>
/// Stores a String Array or Multiple Parameters into a Key w/ specific char seperator
/// </summary>
public static bool SetStringArray(string key, char separator, params string[] stringArray)
{
if (stringArray.Length == 0) return false;
try
{ PlayerPrefs.SetString(key, String.Join(separator.ToString(), stringArray)); }
catch (Exception e)
{ return false; }
return true;
}
/// <summary>
/// Stores a Bool Array or Multiple Parameters into a Key
/// </summary>
public static bool SetStringArray(string key, params string[] stringArray)
{
if (!SetStringArray(key, "\n"[0], stringArray))
return false;
return true;
}
/// <summary>
/// Returns a String Array from a key & char seperator
/// </summary>
public static string[] GetStringArray(string key, char separator)
{
if (PlayerPrefs.HasKey(key))
return PlayerPrefs.GetString(key).Split(separator);
return new string[0];
}
/// <summary>
/// Returns a Bool Array from a key
/// </summary>
public static string[] GetStringArray(string key)
{
if (PlayerPrefs.HasKey(key))
return PlayerPrefs.GetString(key).Split("\n"[0]);
return new string[0];
}
/// <summary>
/// Returns a String Array from a key & char seperator
/// Note: Uses default values to initialize if no key was found
/// </summary>
public static string[] GetStringArray(string key, char separator, string defaultValue, int defaultSize)
{
if (PlayerPrefs.HasKey(key))
return PlayerPrefs.GetString(key).Split(separator);
string[] stringArray = new string[defaultSize];
for (int i = 0; i < defaultSize; i++)
stringArray[i] = defaultValue;
return stringArray;
}
/// <summary>
/// Returns a String Array from a key
/// Note: Uses default values to initialize if no key was found
/// </summary>
public static String[] GetStringArray(string key, string defaultValue, int defaultSize)
{
return GetStringArray(key, "\n"[0], defaultValue, defaultSize);
}
#endregion
}該類的使用和PlayerPrefs基本一致。下面是示例代碼。
//存儲浮點型數組
Playerprefs.SetFloatArray("array1",new float[] {0,1,2,3,4});
//取出數組
Playerprefs.GetFloatArray("array1");擴充的PlayerPrefs可以存儲各種類型的數組，使用靈活方便，對於一些小的項目十分合適。