melvincabatuan

$ ndk-build
Android NDK: Your APP_BUILD_SCRIPT points to an unknown file: /home/cobalt/AndroidStudioProjects/HelloNDK/app/src/main/jniLibs/jni/Android.mk    
/home/cobalt/Android/adt-bundle-linux-x86-20131030/android-ndk-r10b/build/core/add-application.mk:209: *** Android NDK: Aborting...    .  Stop.

/** 
SOLUTION:

Modify NDK_PROJECT_PATH variable
export NDK_PROJECT_PATH=/home/cobalt/AndroidStudioProjects/HelloNDK/app/src/main/

melvincabatuan

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_cabatuan_hellondk_Main */

#ifndef _Included_com_cabatuan_hellondk_Main
#define _Included_com_cabatuan_hellondk_Main
#ifdef __cplusplus
extern "C" {
#endif
#undef com_cabatuan_hellondk_Main_MODE_PRIVATE

melvincabatuan

~/Android/adt-bundle-linux-x86-20131030/android-ndk-r10b/samples/hello-jni$ ndk-build
[armeabi-v7a] Gdbserver      : [arm-linux-androideabi-4.6] libs/armeabi-v7a/gdbserver
[armeabi-v7a] Gdbsetup       : libs/armeabi-v7a/gdb.setup
[armeabi] Gdbserver      : [arm-linux-androideabi-4.6] libs/armeabi/gdbserver
[armeabi] Gdbsetup       : libs/armeabi/gdb.setup
[x86] Gdbserver      : [x86-4.6] libs/x86/gdbserver
[x86] Gdbsetup       : libs/x86/gdb.setup
[mips] Gdbserver      : [mipsel-linux-android-4.6] libs/mips/gdbserver
[mips] Gdbsetup       : libs/mips/gdb.setup
[armeabi-v7a] Compile thumb  : hello-jni <= hello-jni.c

melvincabatuan

10-06 09:36:50.648  12476-12476/com.cabatuan.hellojni E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.UnsatisfiedLinkError: stringFromJNI
            at com.cabatuan.hellojni.Main.stringFromJNI(Native Method)
            at com.cabatuan.hellojni.Main.onCreate(Main.java:20)
            at android.app.Activity.performCreate(Activity.java:4465)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
            at android.app.ActivityThread.access$600(ActivityThread.java:127)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)

melvincabatuan

10-06 11:47:16.659  14345-14345/com.cabatuan.hellojni D/dalvikvm﹕ Trying to load lib /data/data/com.cabatuan.hellojni/lib/libhello-jni.so 0x2bddfd40
10-06 11:47:16.659  14345-14345/com.cabatuan.hellojni D/dalvikvm﹕ Added shared lib /data/data/com.cabatuan.hellojni/lib/libhello-jni.so 0x2bddfd40
10-06 11:47:16.659  14345-14345/com.cabatuan.hellojni D/dalvikvm﹕ No JNI_OnLoad found in /data/data/com.cabatuan.hellojni/lib/libhello-jni.so 0x2bddfd40, skipping init
10-06 11:47:16.719  14345-14345/com.cabatuan.hellojni D/TextLayoutCache﹕ Using debug level: 0 - Debug Enabled: 0
10-06 11:47:16.759  14345-14345/com.cabatuan.hellojni D/libEGL﹕ loaded /system/lib/egl/libGLES_android.so
10-06 11:47:16.769  14345-14345/com.cabatuan.hellojni D/libEGL﹕ loaded /system/lib/egl/libEGL_adreno200.so
10-06 11:47:16.769  14345-14345/com.cabatuan.hellojni D/libEGL﹕ loaded /system/lib/egl/libGLESv1_CM_adreno200.so
10-06 11:47:16.769  14345-14345/com.cabatuan.hellojni D/libEGL﹕ loaded /system/lib/egl/libGLESv2_adreno200.so
10-06 11:47

melvincabatuan

apply plugin: 'com.android.application'

android {
    compileSdkVersion 20
    buildToolsVersion "19.1.0"

    defaultConfig {
        applicationId "com.cabatuan.hellojni"
        minSdkVersion 14
        targetSdkVersion 20

melvincabatuan

# 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,

melvincabatuan

ndk-build
Android NDK: WARNING:jni/Android.mk:ImageProcessing: non-system libraries in linker flags: -lgnustl_static    
Android NDK:     This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES    
Android NDK:     or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the    
Android NDK:     current module    
[armeabi-v7a] Compile++ thumb: ImageProcessing <= jni_part.cpp
[armeabi-v7a] SharedLibrary  : libImageProcessing.so
/home/cobalt/Android/adt-bundle-linux-x86-20131030/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lgnustl_static
/home/cobalt/Android/adt-bundle-linux-x86-20131030/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld: /home/cobalt/Android/OpenCV-2.4.9-android-sdk/sdk/native/jni/../libs/armeabi-v7a/libopencv_core.a(persistence

melvincabatuan

10-06 15:49:30.348  15675-15675/com.cabatuan.opencvnative W/dalvikvm﹕ Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lcom/cabatuan/opencvnative/AsynCamPreview;
10-06 15:49:30.358  15675-15675/com.cabatuan.opencvnative D/AndroidRuntime﹕ Shutting down VM
10-06 15:49:30.358  15675-15675/com.cabatuan.opencvnative W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x2b542210)
10-06 15:49:30.358  15675-15675/com.cabatuan.opencvnative E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.ExceptionInInitializerError
            at com.cabatuan.opencvnative.Main.onCreate(Main.java:36)
            at android.app.Activity.performCreate(Activity.java:4465)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)

melvincabatuan

import java.util.Scanner;

public class DISMATHLinearSearch {

	public int find(final int[] data, final int key) {
                int location = -1; 
		for (int i = 0; i < data.length; ++i) {
                     if (data[i] == key){
		         location = i;
                     }