Unity 游戏框架搭建 (十二) 简易AssetBundle打包工具(二)

上篇文章中实现了基本的打包功能,在这篇我们来解决不同平台打AB包的问题。 本篇文章的核心api还是:

[C#]  纯文本查看  复制代码

BuildPipeline.BuildAssetBundles (outPath, 0, EditorUserBuildSettings.activeBuildTarget);

在第三个参数中,只要传入不同平台 BuildTarget就可以了。目前只考虑和iOS平台。

区分iOS、Android平台:

  很简单,只要在上篇文章的QABEditor类中将原来的BuildAssetBundle方法分为BuildAssetBundleiOS和BuildAssetBundleAndroid即可。代码如下所示。

[C#]  纯文本查看  复制代码

public class QABEditor
        {
                [MenuItem( "QFramework/AB/Build iOS" )]
                public static void BuildABiOS()
                {
                        string outputPath = QPath.ABBuildOutPutDir (RuntimePlatform.IPhonePlayer);

                        QIO.CreateDirIfNotExists (outputPath);

                        QABBuilder.BuildAssetBundles (BuildTarget.iOS);

                        AssetDatabase.Refresh ();
                }

                [MenuItem( "QFramework/AB/Build Android" )]
                public static void BuildABAndroid()
                {
                        string outputPath = QPath.ABBuildOutPutDir (RuntimePlatform.Android);

                        QIO.CreateDirIfNotExists (outputPath);

                        QABBuilder.BuildAssetBundles (BuildTarget.Android);

                        AssetDatabase.Refresh ();

                }
}

大家觉得代码中有几个类有些陌生。下面我来一一介绍下。

QPath.ABBuildOutPutDir(build target):

  QPath这个类在我的框架中是用来指定固定的路径用的,因为路径的代码全是字符串,不能让字符串暴露在各处都是,这样会影响代码的可读性。统一管理起来比较方便修改。这个ABBuildOutPutDir这个API的实现如下所示,就不多说了。

[C#]  纯文本查看  复制代码

        /// <summary>
        /// 所有的路径常量都在这里
        /// </summary>
        public class QPath
        {
                /// <summary>
                /// 资源输出的路径
                /// </summary>
                public static string ABBuildOutPutDir(RuntimePlatform platform) {
                        string retDirPath = null ;
                        switch (platform) {
                        case RuntimePlatform.Android:
                                retDirPath = Application.streamingAssetsPath + "/QAB/Android" ;
                                break ;
                        case RuntimePlatform.IPhonePlayer:
                                retDirPath = Application.streamingAssetsPath + "/QAB/iOS" ;
                                break ;
                        case RuntimePlatform.WindowsPlayer:
                        case RuntimePlatform.WindowsEditor:
                                retDirPath = Application.streamingAssetsPath + "/QAB/Windows" ;
                                break ;
                        case RuntimePlatform.OSXPlayer:
                        case RuntimePlatform.OSXEditor:
                                retDirPath = Application.streamingAssetsPath + "/QAB/OSX" ;
                                break ;
                        }

                        return retDirPath;
                }

                /// <summary>
                /// 打包之前的源资源文件
                /// </summary>
                public static string SrcABDir  {
                        get {
                                return Application.dataPath + "/QArt/QAB" ;
                        }
                }
    }
}

QIO.CreateDirIfNotExists (outputPath):

  QIO这个类是用来封装C#的System.IO和一些文件操作相关的API。CreateDirIfNotExists这个命名非常的傻瓜,会点英文就应该可以理解了。下面贴出实现代码,

[C#]  纯文本查看  复制代码

using UnityEngine;
using System.Collections;
using System.IO;

/// <summary>
/// 各种文件的读写复制操作,主要是对System.IO的一些封装
/// </summary>
namespace QFramework {

        public class QIO {

                /// <summary>
                /// 创建新的文件夹,如果存在则不创建
                /// </summary>
                public static void CreateDirIfNotExists( string dirFullPath)
                {
                        if (!Directory.Exists (dirFullPath)) {
                                Directory.CreateDirectory (dirFullPath);
                        }
                }
        }
}

QABBuilder:

  QABBuilder只是封装了本文的核心API

[C#]  纯文本查看  复制代码

BuildPipeline.BuildAssetBundles (outPath, 0, EditorUserBuildSettings.activeBuildTarget);

  封装的原因是打AB包成功后,要对AB包进行一些处理,比如计算包尺寸,计算哈希或者md5值。主要是为了以后的热更新做准备的。看下QABBuilder核心实现.

[C#]  纯文本查看  复制代码

        public class QABBuilder
        {
                public static string overloadedDevelopmentServerURL = "" ;


                public static void BuildAssetBundles(BuildTarget buildTarget)
                {
                        string outputPath = Path.Combine(QPlatform.ABundlesOutputPath,  QPlatform.GetPlatformName());

                        if (Directory.Exists (outputPath)) {
                                Directory.Delete (outputPath, true );
                        }
                        Directory.CreateDirectory (outputPath);

                        BuildPipeline.BuildAssetBundles(outputPath,BuildAssetBundleOptions.None,buildTarget);

                        GenerateVersionConfig (outputPath);
                        if (Directory.Exists(Application.streamingAssetsPath+ "/QAB" )){
                                Directory.Delete (Application.streamingAssetsPath+ "/QAB" , true );
                        }
                        Directory.CreateDirectory (Application.streamingAssetsPath+ "/QAB" );
                        FileUtil.ReplaceDirectory (QPlatform.ABundlesOutputPath,Application.streamingAssetsPath+ "/QAB" );
                        AssetDatabase.Refresh ();
                }
    }
}

        {
                public static string overloadedDevelopmentServerURL = "" ;


                public static void BuildAssetBundles(BuildTarget buildTarget)
                {
                        string outputPath = Path.Combine(QPlatform.ABundlesOutputPath,  QPlatform.GetPlatformName());

                        if (Directory.Exists (outputPath)) {
                                Directory.Delete (outputPath, true );
                        }
                        Directory.CreateDirectory (outputPath);

                        BuildPipeline.BuildAssetBundles(outputPath,BuildAssetBundleOptions.None,buildTarget);

                        GenerateVersionConfig (outputPath);
                        if (Directory.Exists(Application.streamingAssetsPath+ "/QAB" )){
                                Directory.Delete (Application.streamingAssetsPath+ "/QAB" , true );
                        }
                        Directory.CreateDirectory (Application.streamingAssetsPath+ "/QAB" );
                        FileUtil.ReplaceDirectory (QPlatform.ABundlesOutputPath,Application.streamingAssetsPath+ "/QAB" );
                        AssetDatabase.Refresh ();
                }
    }

使用方式:

按这里

  

结果看这里(创建了iOS文件夹)

介绍完毕,睡觉了!

附:我的框架地址:https://github.com/liangxiegame/QFramework

转载请注明地址:凉鞋的笔记:http://liangxiegame.com/