How to have in one row left and right aligned text simultaniously .

RightAlignLastLetterSpan.java

class RightAlignLastLetterSpan extends ReplacementSpan {

	@SuppressWarnings("FieldCanBeLocal") private static boolean DEBUG = false;

	private float textWidth = -1;
	@Nullable private TextAppearanceSpan spanStyle;
	@Nullable private String text;
	@NonNull private TextView tv;

	protected RightAlignLastLetterSpan(@NonNull TextView tv) {this.tv = tv;}

	public static boolean attach(@Nullable TextView tv, @Nullable String text, @StyleRes int resourceTextAppearance) {

		if (tv == null || isEmpty(text)) {
			logWrongArg();
			return false;
		}

		RightAlignLastLetterSpan span = new RightAlignLastLetterSpan(tv);
		span.setSpanStyle(new TextAppearanceSpan(tv.getContext(), resourceTextAppearance));
		span.setText(text);

		SpannableString ss = new SpannableString(new StringBuffer(tv.getText()).append(" _"));
		ss.setSpan(span, ss.length() - 1, ss.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
		tv.setText(ss);

		return true;
	}

	public void setSpanStyle(@Nullable TextAppearanceSpan spanStyle) {

		textWidth = -1;
		this.spanStyle = spanStyle;
	}

	public void setText(@Nullable String text) {

		textWidth = -1;
		this.text = text;
	}

	@Override
	public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm) {

		if (textWidth < 0) {
			applyStyle(paint);
			textWidth = isEmpty(this.text) ? 0 : paint.measureText(this.text);
		}

		return Math.round(textWidth);
	}

	@Override
	public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {

		if (textWidth == 0 || this.text == null) {
			return;
		}

		int lineCount = tv.getLineCount();
		if (lineCount < 1) {return;}

		Rect lineBounds = new Rect();
		int baseline = tv.getLineBounds(lineCount - 1, lineBounds);
		lineBounds.offset(-tv.getPaddingLeft(), -tv.getPaddingTop());
		baseline -= tv.getPaddingTop();

		if (DEBUG) {
			paint.setColor(Color.argb(100, 100, 255, 100));
			canvas.drawRect(lineBounds, paint);

			paint.setColor(Color.argb(100, 255, 100, 100));
			canvas.drawRect(x, top, x + textWidth, bottom, paint);
		}

		applyStyle(paint);

		canvas.drawText(this.text, lineBounds.right - textWidth, baseline, paint);
	}

	public void applyStyle(Paint paint) {

		if (paint instanceof TextPaint && spanStyle != null) {
			TextPaint tp = (TextPaint) paint;
			spanStyle.updateDrawState(tp);
		}
	}
}