| /* |
| * 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.platform_library; |
| |
| import android.util.Log; |
| |
| public final class PlatformLibrary { |
| static { |
| /* |
| * Load the library. If it's already loaded, this does nothing. |
| */ |
| System.loadLibrary("platform_library_jni"); |
| } |
| |
| private int mJniInt = -1; |
| |
| public PlatformLibrary() {} |
| |
| /* |
| * Test native methods. |
| */ |
| public int getInt(boolean bad) { |
| /* this alters mJniInt */ |
| int result = getJniInt(bad); |
| |
| /* reverse a string, for no very good reason */ |
| String reverse = reverseString("Android!"); |
| |
| Log.i("PlatformLibrary", "getInt: " + result + ", '" + reverse + "'"); |
| |
| return mJniInt; |
| } |
| |
| /* |
| * Simple method, called from native code. |
| */ |
| private static void yodel(String msg) { |
| Log.d("PlatformLibrary", "yodel: " + msg); |
| } |
| |
| /* |
| * Trivial native method call. If "bad" is true, this will throw an |
| * exception. |
| */ |
| native private int getJniInt(boolean bad); |
| |
| /* |
| * Native method that returns a new string that is the reverse of |
| * the original. This also calls yodel(). |
| */ |
| native private static String reverseString(String str); |
| } |