diff --git a/app/src/main/cpp/MicroPhoto.cpp b/app/src/main/cpp/MicroPhoto.cpp
index 1103db69..abcfd73f 100644
--- a/app/src/main/cpp/MicroPhoto.cpp
+++ b/app/src/main/cpp/MicroPhoto.cpp
@@ -171,10 +171,26 @@ void Runner::RequestCapture(CTerminal* pTerminal, unsigned int channel, unsigned
     pTerminal->RequestCapture(channel, preset, type, scheduleTime);
 }
 
+#include <signal.h>
+#include <android/log.h>
+
+#if 0
+void sighandler(int sig) {
+    __android_log_print(ANDROID_LOG_ERROR, "NativeCrash", "Caught signal %d", sig);
+
+    exit(1);
+}
+#endif
+
 jint JNI_OnLoad(JavaVM* vm, void* reserved)
 {
     JNIEnv* env = NULL;
     jint result = -1;
+    
+    // 在 JNI_OnLoad 或其他初始化函数中注册
+#if 0
+    signal(SIGSEGV, sighandler);
+#endif
 
 #if defined(JNI_VERSION_1_6)
     if (result==-1 && vm->GetEnv((void**)&env, JNI_VERSION_1_6) == JNI_OK)
@@ -983,9 +999,8 @@ Java_com_xypower_mpapp_MicroPhotoService_infoLog(
         return;
     }
 
-    const char *msgStr = env->GetStringUTFChars(msg, 0);
-    XYLOG(XYLOG_SEVERITY_INFO, msgStr);
-    env->ReleaseStringUTFChars(msg, msgStr);
+    std::string str = jstring2string(env, msg);
+    XYLOG(XYLOG_SEVERITY_INFO, str.c_str());
 }
 
 extern "C" JNIEXPORT jboolean JNICALL
diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index a0486d9d..a8775892 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -1846,7 +1846,7 @@ bool CPhoneDevice::TakeVideoWithNetCamera(IDevice::PHOTO_INFO& localPhotoInfo, c
     {
         TakePhotoCb(0, localPhotoInfo, "", 0);
         XYLOG(XYLOG_SEVERITY_ERROR, "Failed to TP on NET Camera CH=%u PR=%X PHOTOID=%u URL=%s", (uint32_t)localPhotoInfo.channel, (uint32_t)localPhotoInfo.preset,
-            localPhotoInfo.photoId, ip, streamingUrl.c_str());
+            localPhotoInfo.photoId, ip.c_str(), streamingUrl.c_str());
     }
     // Notify to take next photo
     // TakePhotoCb(1, localPhotoInfo, "", takingTime);
diff --git a/app/src/main/cpp/netcamera/YuShiCtrl.cpp b/app/src/main/cpp/netcamera/YuShiCtrl.cpp
index 93bd2bdb..1943300d 100644
--- a/app/src/main/cpp/netcamera/YuShiCtrl.cpp
+++ b/app/src/main/cpp/netcamera/YuShiCtrl.cpp
@@ -62,7 +62,7 @@ void YuShiCtrl::EnableOsd(bool enable, uint8_t channel)
     std::istringstream s(jsonString);
 
     if (!Json::parseFromStream(reader, s, &root, &errors)) {
-        XYLOG(XYLOG_SEVERITY_ERROR,"Failed to parse JSON:%s", errors);
+        XYLOG(XYLOG_SEVERITY_ERROR, "Failed to parse JSON:%s", errors.c_str());
         return;
     }