upload android base code part7

android/development/samples/SimpleJNI/Android.mk

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+#
+# Copyright (C) 2008 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.
+#
+
+# This makefile shows how to build a shared library and an activity that
+# bundles the shared library and calls it using JNI.
+
+TOP_LOCAL_PATH:= $(call my-dir)
+
+# Build activity
+
+LOCAL_PATH:= $(TOP_LOCAL_PATH)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := samples
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+LOCAL_PACKAGE_NAME := SimpleJNI
+
+LOCAL_JNI_SHARED_LIBRARIES := libsimplejni
+
+LOCAL_PROGUARD_ENABLED := disabled
+
+LOCAL_SDK_VERSION := current
+
+LOCAL_DEX_PREOPT := false
+
+include $(BUILD_PACKAGE)
+
+# ============================================================
+
+# Also build all of the sub-targets under this one: the shared library.
+include $(call all-makefiles-under,$(LOCAL_PATH))

android/development/samples/SimpleJNI/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 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.
+-->
+
+<!-- This is an example of writing an application that bundles a
+     native code library. -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.example.android.simplejni">
+    <application android:label="Simple JNI">
+        <activity android:name="SimpleJNI">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest> 

android/development/samples/SimpleJNI/jni/Android.mk

@@ -0,0 +1,49 @@
+#
+# Copyright (C) 2008 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.
+#
+
+# This makefile supplies the rules for building a library of JNI code for
+# use by our example of how to bundle a shared library with an APK.
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_TAGS := samples
+
+# This is the target being built.
+LOCAL_MODULE:= libsimplejni
+
+
+# All of the source files that we will compile.
+LOCAL_SRC_FILES:= \
+    native.cpp
+
+# All of the shared libraries we link against.
+LOCAL_SHARED_LIBRARIES := \
+    liblog
+
+# No static libraries.
+LOCAL_STATIC_LIBRARIES :=
+
+# Also need the JNI headers.
+LOCAL_C_INCLUDES += \
+    $(JNI_H_INCLUDE)
+
+# No special compiler flags.
+LOCAL_CFLAGS +=
+
+LOCAL_CXX_STL := none
+
+include $(BUILD_SHARED_LIBRARY)

android/development/samples/SimpleJNI/jni/native.cpp

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#define LOG_TAG "simplejni native.cpp"
+#include <utils/Log.h>
+
+#include <stdio.h>
+
+#include "jni.h"
+
+static jint
+add(JNIEnv *env, jobject thiz, jint a, jint b) {
+int result = a + b;
+    ALOGI("%d + %d = %d", a, b, result);
+    return result;
+}
+
+static const char *classPathName = "com/example/android/simplejni/Native";
+
+static JNINativeMethod methods[] = {
+  {"add", "(II)I", (void*)add },
+};
+
+/*
+ * Register several native methods for one class.
+ */
+static int registerNativeMethods(JNIEnv* env, const char* className,
+    JNINativeMethod* gMethods, int numMethods)
+{
+    jclass clazz;
+
+    clazz = env->FindClass(className);
+    if (clazz == NULL) {
+        ALOGE("Native registration unable to find class '%s'", className);
+        return JNI_FALSE;
+    }
+    if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {
+        ALOGE("RegisterNatives failed for '%s'", className);
+        return JNI_FALSE;
+    }
+
+    return JNI_TRUE;
+}
+
+/*
+ * Register native methods for all classes we know about.
+ *
+ * returns JNI_TRUE on success.
+ */
+static int registerNatives(JNIEnv* env)
+{
+  if (!registerNativeMethods(env, classPathName,
+                 methods, sizeof(methods) / sizeof(methods[0]))) {
+    return JNI_FALSE;
+  }
+
+  return JNI_TRUE;
+}
+
+
+// ----------------------------------------------------------------------------
+
+/*
+ * This is called by the VM when the shared library is first loaded.
+ */
+ 
+typedef union {
+    JNIEnv* env;
+    void* venv;
+} UnionJNIEnvToVoid;
+
+jint JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+    UnionJNIEnvToVoid uenv;
+    uenv.venv = NULL;
+    jint result = -1;
+    JNIEnv* env = NULL;
+    
+    ALOGI("JNI_OnLoad");
+
+    if (vm->GetEnv(&uenv.venv, JNI_VERSION_1_4) != JNI_OK) {
+        ALOGE("ERROR: GetEnv failed");
+        goto bail;
+    }
+    env = uenv.env;
+
+    if (registerNatives(env) != JNI_TRUE) {
+        ALOGE("ERROR: registerNatives failed");
+        goto bail;
+    }
+    
+    result = JNI_VERSION_1_4;
+    
+bail:
+    return result;
+}

android/development/samples/SimpleJNI/src/com/example/android/simplejni/SimpleJNI.java

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+/*
+ * Copyright (C) 2008 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.
+ */
+
+package com.example.android.simplejni;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.TextView;
+
+public class SimpleJNI extends Activity {
+    /** Called when the activity is first created. */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        TextView tv = new TextView(this);
+        int sum = Native.add(2, 3);
+        tv.setText("2 + 3 = " + Integer.toString(sum));
+        setContentView(tv);
+    }
+}
+
+class Native {
+    static {
+    	// The runtime will add "lib" on the front and ".o" on the end of
+    	// the name supplied to loadLibrary.
+        System.loadLibrary("simplejni");
+    }
+
+    static native int add(int a, int b);
+}