Android(安卓)JNI

package test.lee.mymm;

public class MyJNI {

static{
System.loadLibrary("MyMM");
}

public native int add();

}
=====================================
package test.lee.mymm;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class MyMM extends Activity {
/** Called when the activity is first created. */

private TextView tv1 = null;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

MyJNI myjni = new MyJNI();
int res = myjni.add();
String show = String.valueOf(res);
tv1=(TextView)findViewById(R.id.TextView01);
tv1.setText(show);
}
}
====
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_C_INCLUDES := $(JNI_H_INCLUDE)

LOCAL_SRC_FILES:= \
test_lee_mymm_MyJNI.c

LOCAL_SHARED_LIBRARIES := libutils

LOCAL_PRELINK_MODULE := false

LOCAL_MODULE := libMyMM

include $(BUILD_SHARED_LIBRARY)

====
#include <stdio.h>
#include <stdlib.h>
#include "test_lee_mymm_MyJNI.h"

JNIEXPORT jint JNICALL Java_test_lee_mymm_MyJNI_add
(JNIEnv* env, jobject obj)
{
return 115;
}
===
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class test_lee_mymm_MyJNI */

#ifndef _Included_test_lee_mymm_MyJNI
#define _Included_test_lee_mymm_MyJNI
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: test_lee_mymm_MyJNI
* Method: add
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_test_lee_mymm_MyJNI_add
(JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

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