我尝试在Xamarin Shared Project上设置linphone;对于音频通话很简单，但对于视频通话，我无法正确设置环境 .
特别是，从文档中，我将为mediastreamer设置设置AndroidVideoWindowImpl的实例，但导入的包mediastreamer_base和mediastreamer_voip中不存在此类 . 我尝试通过LinphoneCore方法setNativeVideoWindowId设置SurfaceView，但应用程序崩溃时出现以下错误
[Linphone] android_display_init 0xe677a8c8 0xd28b3de0
[Linphone] no such method on filter MSAndroidDisplay, fid=16387 method index=1
[Linphone] RtpSession [0xd1831400] error sending [rtp] packet [0xef0c5b60] to no-addr: Destination address required [89]
[art] art/runtime/java_vm_ext.cc:410] JNI DETECTED ERROR IN APPLICATION: use of invalid jobject 0xd26e2f10
[art] art/runtime/java_vm_ext.cc:410] from void md5270abb39e60627f0f200893b490a1ade.ButtonRenderer_ButtonClickListener.n_onClick(android.view.View)
[art] art/runtime/java_vm_ext.cc:410] "main" prio=5 tid=1 Runnable
[art] art/runtime/java_vm_ext.cc:410] | group="main" sCount=0 dsCount=0 obj=0x75f86f80 self=0xf53b6500
[art] art/runtime/java_vm_ext.cc:410] | sysTid=20664 nice=0 cgrp=default sched=0/0 handle=0xf76cab34
[art] art/runtime/java_vm_ext.cc:410] | state=R schedstat=( 0 0 0 ) utm=4510 stm=906 core=2 HZ=100
[art] art/runtime/java_vm_ext.cc:410] | stack=0xff0a7000-0xff0a9000 stackSize=8MB
[art] art/runtime/java_vm_ext.cc:410] | held mutexes= "mutator lock"(shared held)
[art] art/runtime/java_vm_ext.cc:410] native: #00 pc 0035aee7 /system/lib/libart.so (_ZN3art15DumpNativeStackERNSt3__113basic_ostreamIcNS0_11char_traitsIcEEEEiPKcPNS_9ArtMethodEPv+126)
[art] art/runtime/java_vm_ext.cc:410] native: #01 pc 0033ba6b /system/lib/libart.so (_ZNK3art6Thread4DumpERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEE+138)
[art] art/runtime/java_vm_ext.cc:410] native: #02 pc 0024e203 /system/lib/libart.so (_ZN3art9JavaVMExt8JniAbortEPKcS2_+750)
[art] art/runtime/java_vm_ext.cc:410] native: #03 pc 0024e90b /system/lib/libart.so (_ZN3art9JavaVMExt9JniAbortFEPKcS2_z+62)
[art] art/runtime/java_vm_ext.cc:410] native: #04 pc 0033c5bf /system/lib/libart.so (_ZNK3art6Thread13DecodeJObjectEP8_jobject+174)
[art] art/runtime/java_vm_ext.cc:410] native: #05 pc 000ffc0f /system/lib/libart.so (_ZN3art11ScopedCheck5CheckERNS_18ScopedObjectAccessEbPKcPNS_12JniValueTypeE.constprop.95+890)
[art] art/runtime/java_vm_ext.cc:410] native: #06 pc 001120c9 /system/lib/libart.so (_ZN3art8CheckJNI12NewGlobalRefEP7_JNIEnvP8_jobject+368)
[art] art/runtime/java_vm_ext.cc:410] native: #07 pc 00085f41 /data/app/org.linphone.xamarin-1/lib/arm/libmediastreamer_voip.so (???)
[art] art/runtime/java_vm_ext.cc:410] native: #08 pc 000825b3 /data/app/org.linphone.xamarin-1/lib/arm/libmediastreamer_voip.so (???)
[art] art/runtime/java_vm_ext.cc:410] native: #09 pc 00081ee3 /data/app/org.linphone.xamarin-1/lib/arm/libmediastreamer_voip.so (video_stream_start_from_io+342)
[art] art/runtime/java_vm_ext.cc:410] native: #10 pc 002e8167 /data/app/org.linphone.xamarin-1/lib/arm/liblinphone.so (linphone_call_start_media_streams+3614)
[art] art/runtime/java_vm_ext.cc:410] native: #11 pc 002d527f /data/app/org.linphone.xamarin-1/lib/arm/liblinphone.so (linphone_call_update_streams+430)
[art] art/runtime/java_vm_ext.cc:410] native: #12 pc 002ea7ab /data/app/org.linphone.xamarin-1/lib/arm/liblinphone.so (linphone_call_accept_with_params+474)
[art] art/runtime/java_vm_ext.cc:410] native: #13 pc 00004fb8 (???)
[art] art/runtime/java_vm_ext.cc:410] at md5270abb39e60627f0f200893b490a1ade.ButtonRenderer_ButtonClickListener.n_onClick(Native method)
[art] art/runtime/java_vm_ext.cc:410] at md5270abb39e60627f0f200893b490a1ade.ButtonRenderer_ButtonClickListener.onClick(ButtonRenderer_ButtonClickListener.java:30)
[art] art/runtime/java_vm_ext.cc:410] at android.view.View.performClick(View.java:5217)
[art] art/runtime/java_vm_ext.cc:410] at android.view.View$PerformClick.run(View.java:21342)
[art] art/runtime/java_vm_ext.cc:410] at android.os.Handler.handleCallback(Handler.java:739)
[art] art/runtime/java_vm_ext.cc:410] at android.os.Handler.dispatchMessage(Handler.java:95)
[art] art/runtime/java_vm_ext.cc:410] at android.os.Looper.loop(Looper.java:148)
[art] art/runtime/java_vm_ext.cc:410] at android.app.ActivityThread.main(ActivityThread.java:5551)
[art] art/runtime/java_vm_ext.cc:410] at java.lang.reflect.Method.invoke!(Native method)
[art] art/runtime/java_vm_ext.cc:410] at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:730)
[art] art/runtime/java_vm_ext.cc:410] at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:620)
[art] art/runtime/java_vm_ext.cc:410]
[Linphone] RtpSession [0xd1831400] error sending [rtp] packet [0xef0c7ca0] to no-addr: Destination address required [89]
谁有同样的问题？谢谢 .