1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.simplejni; 18 19 import android.app.Activity; 20 import android.os.Bundle; 21 import android.widget.TextView; 22 23 public class SimpleJNI extends Activity { 24 /** Called when the activity is first created. */ 25 @Override onCreate(Bundle savedInstanceState)26 public void onCreate(Bundle savedInstanceState) { 27 super.onCreate(savedInstanceState); 28 TextView tv = new TextView(this); 29 int sum = Native.add(2, 3); 30 tv.setText("2 + 3 = " + Integer.toString(sum)); 31 setContentView(tv); 32 } 33 } 34 35 class Native { 36 static { 37 // The runtime will add "lib" on the front and ".o" on the end of 38 // the name supplied to loadLibrary. 39 System.loadLibrary("simplejni"); 40 } 41 add(int a, int b)42 static native int add(int a, int b); 43 } 44