在开发中,特别是unity的跨平台中,我们常常会在各个平台游走,如安卓版,苹果版,PC版......。在此不同的平台上,有可能我们须要做不同的操作。然而我们就能够用unity的自带的平台宏定义方式来做平台的推断。Unity帮我们定义了例如以下平台预处理:
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以后我们能够依据如上宏定义就能够去轻而易举的非常easy去在我们代码中增加推断了。我举个简单样例,例如以下:
using UnityEngine;
using System.Collections;
public class Recompile : MonoBehaviour
{
private string platform = string.Empty;
// Use this for initialization
void Start()
{
DebugPlatformMesaage();
}
void DebugPlatformMesaage()
{
#if UNITY_EDITOR
platform = "hi,大家好,我是在unity编辑模式下";
#elif UNITY_XBOX360
platform="hi,大家好,我在XBOX360平台";
#elif UNITY_IPHONE
platform="hi,大家好,我是IPHONE平台";
#elif UNITY_ANDROID
platform="hi,大家好,我是ANDROID平台";
#elif UNITY_STANDALONE_OSX
platform="hi,大家好,我是OSX平台";
#elif UNITY_STANDALONE_WIN
platform="hi,大家好,我是Windows平台";
#endif
Debug.Log("Current Platform:" + platform);
}
}
上面假设我是在Editor状态下的话,就能看见打印出:
我们也能够自定义宏定义,在PlayerSetting中定义:
比如我在上面圈起来的地方填写一个CUSTOM_ITF这个预编译指令。然后在DebugPlatformMesaage函数尾部增加这句话
//新加入的内容
#if CUSTOM_ITF
customMsg = "我自己定义了预编译";
#endif
Debug.Log(customMsg);
然后我们执行看下,你就能在控制台看见我们输出的信息了:
当我们把我们自己定义的宏定义给去掉的时候,我们打印的信息就不会出来。
除了这些,unity中还有各个版本号的宏定义,一般开发插件的大牛都会用到。
UNITY_2_6 | Platform define for the major version of Unity 2.6. |
UNITY_2_6_1 | Platform define for specific version 1 from the major release 2.6. |
UNITY_3_0 | Platform define for the major version of Unity 3.0. |
UNITY_3_0_0 | Platform define for the specific version 0 of Unity 3.0. |
UNITY_3_1 | Platform define for major version of Unity 3.1. |
UNITY_3_2 | Platform define for major version of Unity 3.2. |
UNITY_3_3 | Platform define for major version of Unity 3.3. |
UNITY_3_4 | Platform define for major version of Unity 3.4. |
UNITY_3_5 | Platform define for major version of Unity 3.5. |
UNITY_4_0 | Platform define for major version of Unity 4.0. |
UNITY_4_0_1 | Platform define for major version of Unity 4.0.1. |
UNITY_4_1 | Platform define for major version of Unity 4.1. |
UNITY_4_2 | Platform define for major version of Unity 4.2. |