android - 无法打开声音设备：音频设备操作无效或不受支持

Question

无法弄清楚为什么 CSipSimple 在我的 android 手机上正常工作，但是当我在 call_make_call(..) 上使用相同的 CSipSimple 库尝试我自己的代码时，我的应用程序以这种方式崩溃：无法弄清楚发生了什么。我正在处理所有回调，但只有 ON_REG_STATE 被触发。有人有同样的问题吗？

D/libpjsip(21325):  16:24:19.930 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.931 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.931  pjsua_media.c  Opening sound device PCM@16000/1/20ms
D/libpjsip(21325):  16:24:19.931 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.931 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.931 android_jni_de  Create stream : 16000 samples/sec, 320     samples/frame, 2 bytes/sample
D/libpjsip(21325):  16:24:19.931 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.932 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.932  pjsua_media.c  Opening sound device PCM@44100/1/20ms
D/libpjsip(21325):  16:24:19.932 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.932 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.932 android_jni_de  Create stream : 44100 samples/sec, 882     samples/frame, 2 bytes/sample
D/libpjsip(21325):  16:24:19.933 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.933 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.933  pjsua_media.c  Opening sound device PCM@48000/1/20ms
D/libpjsip(21325):  16:24:19.934 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.934 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.934 android_jni_de  Create stream : 48000 samples/sec, 960 samples/frame, 2 bytes/sample
D/libpjsip(21325):  16:24:19.934 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.934 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.934  pjsua_media.c  Opening sound device PCM@32000/1/20ms
D/libpjsip(21325):  16:24:19.934 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.935 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.935 android_jni_de  Create stream : 32000 samples/sec, 640 samples/frame, 2 bytes/sample
D/libpjsip(21325):  16:24:19.935 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.935 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.935  pjsua_media.c  Opening sound device PCM@16000/1/20ms
D/libpjsip(21325):  16:24:19.935 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.936 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.936 android_jni_de  Create stream : 16000 samples/sec, 320 samples/frame, 2 bytes/sample
D/libpjsip(21325):  16:24:19.936 android_jni_de  Default params
D/libpjsip(21325):  16:24:19.936 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.936  pjsua_media.c  Opening sound device PCM@8000/1/20ms
D/libpjsip(21325):  16:24:19.936 android_jni_de  Get dev info
D/libpjsip(21325):  16:24:19.937 android_jni_de  Creating stream
I/libpjsip(21325):  16:24:19.937 android_jni_de  Create stream : 8000 samples/sec, 160 samples/frame, 2 bytes/sample
E/libpjsip(21325):  16:24:19.937  pjsua_media.c  Unable to open sound device: Invalid     or unsupported audio device operation (PJMEDIA_EAUD_INVOP) [status=420009]