//加载指定ab包名的ab包
public AssetBundle LoadAssetBundle(string abName)
{
AssetBundleItem abItem = null;
uint crc = CrcHelper.StringToCRC32(abName); //AB包名字创建crc
if (!m_assetBundleItemDict.TryGetValue(crc, out abItem) || abItem == null)
{
AssetBundle assetBundle = null;
string abFullPath = ABPathConfig.AssetBundleBuildTargetPath + "/" + abName;
if (File.Exists(abFullPath))
{
assetBundle = AssetBundle.LoadFromFile(abFullPath);
}
if (assetBundle == null)
{
Debug.Log("Load AssetBundle Error: " + abFullPath);
return(null);
}
abItem = m_assetBundleItemPool.Spawn(true);
abItem.assetBundle = assetBundle;
abItem.refCount++;
m_assetBundleItemDict.Add(crc, abItem);
}
else
{
abItem.refCount++;
}
return(abItem.assetBundle);
}
//卸载指定ab包名的ab包
public void UnLoadAssetBundle(string abName)
{
AssetBundleItem abItem = null;
uint crc = CrcHelper.StringToCRC32(abName);
if (m_assetBundleItemDict.TryGetValue(crc, out abItem) && abItem != null)
{
abItem.refCount--;
if (abItem.refCount <= 0 && abItem.assetBundle != null)
{
abItem.assetBundle.Unload(true);
abItem.Reset();
m_assetBundleItemPool.Recycle(abItem);
m_assetBundleItemDict.Remove(crc);
}
}
}