拷贝APP_Bck20250119项目源码，移除libjc/jcc/libs/android-29.jar文件。

jcndk/jni/hello-jni.cpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#include <string.h>
+#include <jni.h>
+
+/* This is a trivial JNI example where we use a native method
+ * to return a new VM String. See the corresponding Java source
+ * file located at:
+ *
+ *   apps/samples/hello-jni/project/src/com/example/hellojni/HelloJni.java
+ */
+extern "C"
+{
+	JNIEXPORT jstring JNICALL Java_cc_winboll_studio_jcndk_HelloJni_stringFromJNI(JNIEnv* env, jobject thiz)
+	{
+		return env->NewStringUTF("Hello from JNI !");
+	}
+}