Verbose toString for android.graphics.BitmapFactory.Options

BitmapFactoryOptionsToString.java

import android.graphics.BitmapFactory;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

/**
 * Created by konstantinberkow on 12/11/17.
 */

public final class BitmapFactoryOptionsToString {

    private BitmapFactoryOptionsToString() {
    }

    @NonNull
    public static String toString(@Nullable BitmapFactory.Options options) {
        if (options == null) {
            return "null";
        }

        final StringBuilder builder = new StringBuilder(1024)
                .append("BitmapFactory.Options{")
                .append("\"inBitmap\": ").append(options.inBitmap).append(", ")
                .append("\"inDensity\": ").append(options.inDensity).append(", ")
                .append("\"inJustDecodeBounds\": ").append(options.inJustDecodeBounds).append(", ")
                .append("\"inMutable\": ").append(options.inMutable).append(", ")
                .append("\"inPreferredConfig\": ").append(options.inPreferredConfig).append(", ")
                .append("\"inSampleSize\": ").append(options.inSampleSize).append(", ")
                .append("\"inScaled\": ").append(options.inScaled).append(", ")
                .append("\"inScreenDensity\": ").append(options.inScreenDensity).append(", ")
                .append("\"inTargetDensity\": ").append(options.inTargetDensity).append(", ")
                .append("\"outHeight\": ").append(options.outHeight).append(", ")
                .append("\"outMimeType\": ").append(options.outMimeType).append(", ")
                .append("\"outWidth\": ").append(options.outWidth).append(", ")
                .append("\"inTempStorage\": ");

        // append inTempStorage without Arrays.toString
        final byte[] array = options.inTempStorage;
        final int length = array == null ? -1 : array.length;
        if (length == -1) {
            builder.append("null");
        } else if (length > 0) {
            builder.append('[').append(array[0]);
            for (int i = 1; i < length; i++) {
                builder.append(", ").append(array[i]);
            }
            builder.append(']');
        } else {
            builder.append("[]");
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            builder.append(", ").append("\"inPremultiplied\": ").append(options.inPremultiplied);
        }

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            builder.append(", ").append("\"inInputShareable\": ").append(options.inInputShareable)
                    .append(", ").append("\"inPurgeable\": ").append(options.inPurgeable);
        }

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
            builder.append(", ").append("\"inDither\": ").append(options.inDither)
                    .append(", ").append("\"inPreferQualityOverSpeed\": ").append(options.inPreferQualityOverSpeed)
                    .append(", ").append("\"mCancel\": ").append(options.mCancel);
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            builder.append(", ").append("\"inPreferredColorSpace\": ").append(options.inPreferredColorSpace)
                    .append(", ").append("\"outColorSpace\": ").append(options.outColorSpace)
                    .append(", ").append("\"outConfig\": ").append(options.outConfig);
        }

        return builder.append('}').toString();
    }
}