CropImageCenter.java

import android.content.Context;

import android.graphics.Matrix;

import android.util.AttributeSet;

import android.widget.ImageView;

public class TopImageCrop extends ImageView {

    public TopImageCrop(final Context context) {
        super(context);
        init();
    }

    public TopImageCrop(final Context context, final AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public TopImageCrop(final Context context, final AttributeSet attrs, final int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    private void init() {
        setScaleType(ImageView.ScaleType.MATRIX);
    }

    @Override
    protected boolean setFrame(final int frameLeft, final int frameTop, final int frameRight, final int frameBottom) {
        float frameWidth = frameRight - frameLeft;
        float frameHeight = frameBottom - frameTop;

        float originalImageWidth = (float) getDrawable().getIntrinsicWidth();
        float originalImageHeight = (float) getDrawable().getIntrinsicHeight();

        float usedScaleFactor = 1;

        if ((originalImageWidth > frameWidth) || (originalImageHeight > frameHeight)) {
            // If frame is bigger than image
            // => Crop it, keep aspect ratio and position it at the bottom and center horizontally

            float fitHorizontallyScaleFactor = frameWidth / originalImageWidth;
            float fitVerticallyScaleFactor = frameHeight / originalImageHeight;

            usedScaleFactor = Math.max(fitHorizontallyScaleFactor, fitVerticallyScaleFactor);
        }

        float newImageWidth = originalImageWidth * usedScaleFactor;
        float newImageHeight = originalImageHeight * usedScaleFactor;

        Matrix matrix = getImageMatrix();
        matrix.setScale(usedScaleFactor, usedScaleFactor, 0, 0); // Replaces the old matrix completly
        matrix.postTranslate((frameWidth - newImageWidth) / 2, frameHeight - newImageHeight);
        setImageMatrix(matrix);
        return super.setFrame(frameLeft, frameTop, frameRight, frameBottom);
    }

}

Use with ContextCompat.getDrawable(context, R.drawable.resource)