2020-07-02 1.更新最新SDK。 2.参试封装工具类，只初始化一次SDK方案，暂时解决SDK无法释放问题。

JLChen

2020-07-02 fac61655d3d255468491d0829c8814c0cf0a62dd

 xamarin/ESVideoPhoneSDKXamarin/ESVideoPhoneSDKXamarin.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
   objects = {

/* Begin PBXBuildFile section */
      B924EFB724AD6B6800E402C4 /* ESVideo.m in Sources */ = {isa = PBXBuildFile; fileRef = B924EFB524AD6B6700E402C4 /* ESVideo.m */; };
      B956B47C248D2B400093C489 /* libiconv.2.4.0.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = B956B47B248D2B400093C489 /* libiconv.2.4.0.tbd */; platformFilter = ios; };
      B956B47E248D2B4C0093C489 /* libz.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = B956B47D248D2B4C0093C489 /* libz.tbd */; platformFilter = ios; };
      B956B480248D2B570093C489 /* libbz2.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = B956B47F248D2B570093C489 /* libbz2.tbd */; platformFilter = ios; };
@@ -30,6 +31,8 @@
/* End PBXCopyFilesBuildPhase section */

/* Begin PBXFileReference section */
      B924EFB524AD6B6700E402C4 /* ESVideo.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ESVideo.m; sourceTree = "<group>"; };
      B924EFB624AD6B6800E402C4 /* ESVideo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ESVideo.h; sourceTree = "<group>"; };
      B956B46A248D28B70093C489 /* libESVideoPhoneSDKXamarin.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libESVideoPhoneSDKXamarin.a; sourceTree = BUILT_PRODUCTS_DIR; };
      B956B47B248D2B400093C489 /* libiconv.2.4.0.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libiconv.2.4.0.tbd; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/lib/libiconv.2.4.0.tbd; sourceTree = DEVELOPER_DIR; };
      B956B47D248D2B4C0093C489 /* libz.tbd */ = {isa = PBXFileReference; lastKnownFileType = "sourcecode.text-based-dylib-definition"; name = libz.tbd; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/lib/libz.tbd; sourceTree = DEVELOPER_DIR; };
@@ -81,6 +84,8 @@
      B956B46C248D28B70093C489 /* ESVideoPhoneSDKXamarin */ = {
         isa = PBXGroup;
         children = (
            B924EFB624AD6B6800E402C4 /* ESVideo.h */,
            B924EFB524AD6B6700E402C4 /* ESVideo.m */,
            B958D92D249378D800A62567 /* CBToast.h */,
            B958D92E249378D800A62567 /* CBToast.m */,
            B958D92A249378B200A62567 /* AudioSessionHelper.h */,
@@ -166,6 +171,7 @@
            B956B486248D2B780093C489 /* ESvideoVideoIntercomViewController.m in Sources */,
            B956B487248D2B780093C489 /* ESVideoMonitorViewController.m in Sources */,
            B958D92C249378B200A62567 /* AudioSessionHelper.m in Sources */,
            B924EFB724AD6B6800E402C4 /* ESVideo.m in Sources */,
         );
         runOnlyForDeploymentPostprocessing = 0;
      };