Fix JNI crash about LinphoneCall.getCoference()

coreapi/linphonecore_jni.cc

@@ -4316,8 +4316,8 @@ extern "C" jint Java_org_linphone_core_LinphoneCoreImpl_getConferenceSize(JNIEnv
 }
 
 extern "C" jobject Jave_org_linphone_core_LinphoneCoreImpl_getConference(JNIEnv *env, jobject thiz, jlong pCore) {
-	jclass conference_class = env->FindClass("org/linphone/core/LinphoneConference");
-	jmethodID conference_constructor = env->GetMethodID(conference_class, "<init>", "(J)");
+	jclass conference_class = env->FindClass("org/linphone/core/LinphoneConferenceImpl");
+	jmethodID conference_constructor = env->GetMethodID(conference_class, "<init>", "(J)V");
 	LinphoneConference *conf = linphone_core_get_conference((LinphoneCore *)pCore);
 	if(conf) return env->NewObject(conference_class, conference_constructor, conf);
 	else return NULL;
@@ -4457,9 +4457,9 @@ extern "C" void Java_org_linphone_core_LinphoneCallImpl_setAuthenticationTokenVe
 	linphone_call_set_authentication_token_verified(call, verified);
 }
 
-extern "C" jobject Java_org_linphnoe_core_LinphoneCallImpl_getConference(JNIEnv *env, jobject thiz, jlong ptr) {
-	jclass conference_class = env->FindClass("org/linphone/core/LinphoneConference");
-	jmethodID conference_constructor = env->GetMethodID(conference_class, "<init>", "(J)");
+extern "C" jobject Java_org_linphone_core_LinphoneCallImpl_getConference(JNIEnv *env, jobject thiz, jlong ptr) {
+	jclass conference_class = env->FindClass("org/linphone/core/LinphoneConferenceImpl");
+	jmethodID conference_constructor = env->GetMethodID(conference_class, "<init>", "(J)V");
 	LinphoneConference *conf = linphone_call_get_conference((LinphoneCall *)ptr);
 	if(conf) return env->NewObject(conference_class, conference_constructor, conf);
 	return NULL;

java/common/org/linphone/core/LinphoneCall.java

@@ -280,10 +280,11 @@ public interface LinphoneCall {
 	 */
 	boolean isInConference();
 	/**
-	 * Get the pointer on the C conference instance associated to that call.
-	 * @return A positive value if the call is part of a conference, 0 if not.
+	 * Get the conference instance which the call is part of.
+	 * @return An instance of #LinphoneConference if the call is part
+	 * of a conference. null instead.
 	 */
-	long getConference();
+	LinphoneConference getConference();
 
 	/**
 	 * Indicates whether an operation is in progress at the media side.

java/impl/org/linphone/core/LinphoneCallImpl.java

@@ -165,10 +165,10 @@ class LinphoneCallImpl implements LinphoneCall {
 	}
 
 	public boolean isInConference() {
-		return getConference() != 0;
+		return getConference() != null;
 	}
-	private native long getConference(long nativePtr);
-	public long getConference() {
+	public native LinphoneConference getConference(long nativePtr);
+	public LinphoneConference getConference() {
 		return getConference(nativePtr);
 	}