I am having trouble getting my app to run in Android Studio. I am creating an app to convert a colored image into grayscale and then to a binary image where I could return 0 or 1 depending on the binary image pixels(black or white). The conversion to grayscale is working, but the binary function will not work. Please review my code and let me know why the binary image will not display or why my binary method isn't correct. I have 3 imageviews displaying in my app - one for the colored image, one for the grayscale image, and one to display the binary image.

Here is my code:

 import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Paint; import android.graphics.drawable.BitmapDrawable; import android.widget.ImageView; import android.graphics.Color; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //declare images ImageView originalImageView = findViewById(R.id.image); ImageView blackImageView = findViewById(R.id.blackimage); ImageView binarizedImageView = findViewById(R.id.binarizedimage); //load image Bitmap driversLog = BitmapFactory.decodeResource(getResources(), R.drawable.coloredlog); originalImageView.setBackgroundDrawable(new BitmapDrawable(driversLog)); blackImageView.setBackgroundDrawable(new BitmapDrawable( convertToGrayscale(driversLog))); //load black and white image Bitmap driverLogBinary = BitmapFactory.decodeResource(getResources(), R.id.blackimage); blackImageView.setBackground(new BitmapDrawable(driverLogBinary)); binarizedImageView.setBackgroundDrawable(new BitmapDrawable(toBinary(driverLogBinary))); } private Bitmap convertToGrayscale(Bitmap originalBitmap) { ColorMatrix colorMatrix = new ColorMatrix(); colorMatrix.setSaturation(0); ColorMatrixColorFilter colorMatrixFilter = new ColorMatrixColorFilter( colorMatrix); //creates a copy of the image Bitmap blackAndWhiteBitmap = originalBitmap.copy( Bitmap.Config.ARGB_8888, true); Paint paint = new Paint(); paint.setColorFilter(colorMatrixFilter); //displays the new black and white image Canvas canvas = new Canvas(blackAndWhiteBitmap); canvas.drawBitmap(blackAndWhiteBitmap, 0, 0, paint); return blackAndWhiteBitmap; } public Bitmap toBinary(Bitmap bmpOriginal) { int width, height, threshold; height = bmpOriginal.getHeight(); width = bmpOriginal.getWidth(); threshold = 127; //Bitmap bmpBinary = Bitmap.createBitmap(bmpOriginal); //creates a copy of the image Bitmap bmpBinary = bmpOriginal.copy( Bitmap.Config.ARGB_8888, true); for (int x = 0; x < width; ++x) { for (int y = 0; y < height; ++y) { // get one pixel color int pixel = bmpOriginal.getPixel(x, y); int red = Color.red(pixel); //get binary value if (red < threshold) { bmpBinary.setPixel(x, y, 0xFF000000); } else { bmpBinary.setPixel(x, y, 0xFFFFFFFF); } } } ColorMatrix colorMatrix = new ColorMatrix(); colorMatrix.setSaturation(0); ColorMatrixColorFilter colorMatrixFilter = new ColorMatrixColorFilter( colorMatrix); Paint paint = new Paint(); paint.setColorFilter(colorMatrixFilter); //displays the new binary image Canvas canvas = new Canvas(); canvas.drawBitmap(bmpBinary, 0, 0, paint); return bmpBinary; } }

Here is my XML code: