R cannot be resolved at android 4.2.2 properties

Question

I got R cannot be resolved a variable error when i debug with build target at android 4.2.2, in addition when i debug with android 5.1.1, i got cannot load library error. How can i solve these problems. Thanks for your helps.

public class MainActivity extends ActionBarActivity {

    private final String imageInSD = "/sdcard/dapi1.jpg";   


    Mat src,dst;
    static {
        if (!OpenCVLoader.initDebug()) {
            // Handle initialization error
        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ImageView myImageView = (ImageView)findViewById(R.id.imageview);
        //Mat image = Highgui.imread(imageInSD);

        Bitmap bitmap = BitmapFactory.decodeFile(imageInSD);
        Size size = new Size(bitmap.getWidth(), bitmap.getHeight());
        src = new Mat(size,CvType.CV_8UC3);
        Utils.bitmapToMat(bitmap,src);
        Imgproc.cvtColor(src, src, Imgproc.COLOR_RGB2GRAY);
        Imgproc.threshold(src, src, 100, 255, Imgproc.ADAPTIVE_THRESH_GAUSSIAN_C);
        Utils.matToBitmap(src, bitmap);
        myImageView.setImageBitmap(bitmap);


    }


}

Any help would be greatly appreciated.

If you are using eclipse then switch to android studio first — IntelliJ Amiya, Aug 10 '15 at 14:06
yes, i am using eclipse if i cannot solve the errors i will. thanks — FishCoder, Aug 10 '15 at 14:28
you will have a bad time porting opencv support to idea... I had. — agilob, Aug 10 '15 at 14:47

score 1 · Accepted Answer · answered Aug 10 '15 at 14:02

1

The class ActionBarActivity is deprecated. You should use AppCompatActivity. Your android 5.1.1 supports AppCompatActivity.Please try with AppCompatActivity .Let me inform works or not .

answered Aug 10 '15 at 14:02

IntelliJ Amiya

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i tried AppCompatActivity and i got "cannot load library" and "native method not found" errors. – FishCoder Aug 10 '15 at 14:32
If you are using Android Studio then properly import R or opencv files – IntelliJ Amiya Aug 10 '15 at 16:47
Okay, Clean and Rebuild your Project – IntelliJ Amiya Aug 10 '15 at 16:54
If above tricks not works please post your total code.For your kind advice moved to Android Studio.Eclipse is dead – IntelliJ Amiya Aug 10 '15 at 16:56
1

i will try to move android studio. thanks for help. Actually my total code is above. Do you want to see .xml files? – FishCoder Aug 11 '15 at 09:06
1

i setup the android studio, do you have any advices for importing opencv? – FishCoder Aug 11 '15 at 13:07

R cannot be resolved at android 4.2.2 properties

1 Answers1