Error in Building Java Native Interface to the OpenCV library on Android

Question

I'm new to OpenCV on Android. Right now, I'm trying to configure it on my MacOSX.

I follow these instructions : http://www.stanford.edu/class/ee368/Android/Tutorial-2-OpenCV-for-Android-Setup-Macintosh.pdf

When I reach this step (Build JNI to the OpenCV library) using this command:

sh ./project_create.sh

The console show this error report.

Error: The project either has no target set or the target is invalid.
Please provide a --target to the 'android update' command.

How to set up the target. Does it concern with local.env.mk file. If it does, this is what's inside it:

#location of android-opencv.mk file that was generated by the cmake build
#of opencv for android
OPENCV_CONFIG=../build/android-opencv.mk

#the root directory of the crystax r4 ndk - ndk-build should be in this dir
#you can download the ndk from http://www.crystax.net/android/ndk-r4.php
#ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax
ANDROID_NDK_ROOT=/Users/farissyariati/android-ndk-r4-crystax/
#define only armeabi-v7a to make the final apk smaller or armeabi
ARM_TARGETS="armeabi armeabi-v7a"

Thank you.

Still an issue with the docs at developer.android.com/tools/sdk/ndk/index.html#Installing — Paul Beusterien
– Paul Beusterien, Commented Sep 19, 2014 at 18:18

Community · Accepted Answer · 2020-06-20 09:12:55Z

For you Error"Error: The project either has no target set or the target is invalid. Please provide a --target to the 'android update' command."

Here is the solution .In the Android-jni directory type the Following command in Terminal

android update project -t 1 -p . -s

Here is a list of Build targets You can use by changing the number after -t.

Available Android targets:

id: 1 or “android-7″

Name: Android 2.1-update1

Type: Platform

API level: 7

Revision: 3

Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854

id: 2 or “android-8″

Name: Android 2.2

Type: Platform

API level: 8

Revision: 3

Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854

id: 3 or “android-10″

Name: Android 2.3.3

Type: Platform

API level: 10

Revision: 2

Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854

I was also having the same problem and it solved mine.you can also find more build targets

Hope it Helps

Winte Winte · Accepted Answer · 2012-11-23 07:34:05Z

1

Current number of target platform depends on count of downloaded SDK. Please execute the command below to ensure that you set a correct target platform:

android list target

answered Nov 23, 2012 at 7:34

Winte Winte

7635 gold badges11 silver badges24 bronze badges

Comments

Zied R. · Accepted Answer · 2014-11-13 16:06:07Z

0

I used this commands

->$Android list target:
id: 1 or "android-21"
     Name: Android 5.0
     Type: Platform
     API level: 21
     Revision: 1
     Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in
 Tag/ABIs : android-tv/armeabi-v7a, android-tv/x86, default/armeabi-v7a, default/x86, default/x86_64

I already set this options on the command "android update project -t 1 -p . -s" until here is all good, but when I execute ./setup_env.sh I have the same problem: Error: The project either has no target set or the target is invalid. Please provide a --target to the 'android update' command.

someone,please o/

edited Nov 13, 2014 at 16:06

Zied R.

4,9643 gold badges38 silver badges69 bronze badges

answered Nov 13, 2014 at 14:58

Luciana

1

Collectives™ on Stack Overflow

Error in Building Java Native Interface to the OpenCV library on Android

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related