Adds android example using jni.

examples/cross_calculator/android/jni/backend-jni.c

@@ -0,0 +1,42 @@
+/*
+ * 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 <android/log.h>
+#include <string.h>
+#include "backend-jni.h"
+#include "backend.h"
+
+#define TAG		"backend-jni.c"
+
+jint JNICALL Java_com_github_nimrod_crosscalculator_CrossCalculator_myAdd
+	(JNIEnv *env, jobject thiz, jint a, jint b)
+{
+	char buf[256];
+	const jint ret = myAdd(a, b);
+	// Using logging from inside the native bridge to log-debug.
+	sprintf(buf, "a %d + b %d = ret %d", a, b, ret);
+	__android_log_write(ANDROID_LOG_DEBUG, TAG, buf);
+	return ret;
+}
+
+void JNICALL Java_com_github_nimrod_crosscalculator_CrossCalculator_initNimMain
+	(JNIEnv *env, jclass thiz)
+{
+	NimMain();
+	__android_log_write(ANDROID_LOG_DEBUG, TAG, "Nimrod initialised");
+}
+
+// vim:tabstop=2 shiftwidth=2 syntax=c