A hack to set custom ellipsize and postfix string for Android's TextView

attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="CustomEllipsizeTextView">
        <attr name="maxLines" format="integer" />
        <attr name="postfix" format="reference" />
    </declare-styleable>
</resources>

CustomEllipsizeTextView.java

public class CustomEllipsizeTextView extends TextView {
    private static final int MAX_LINE = 2;
    private static final String ELLIPSIZE_STRING = "...";

    private String originalText;

    private int maxLines = MAX_LINE;
    private String postfix;
    private boolean postfixAdded;

    public CustomEllipsizeTextView(Context context) {
        this(context, null);
    }

    public CustomEllipsizeTextView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CustomEllipsizeTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setEllipsize(null);
        TypedArray typedArray = context.getTheme().obtainStyledAttributes(
                attrs,
                R.styleable.CustomEllipsizeTextView,
                0, 0
        );

        try {
            postfix = context.getString(
                    typedArray.getResourceId(R.styleable.CustomEllipsizeTextView_postfix, 0)
            );
            maxLines = typedArray.getInt(R.styleable.CustomEllipsizeTextView_maxLines, MAX_LINE);
        } finally {
            typedArray.recycle();
        }
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        super.setText(text, type);
        originalText = String.valueOf(text);
    }

    public void setPostfixString(String string) {
        postfix = string;
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        Layout layout = getLayout();
        if (layout != null) {
            if (layout.getLineCount() > maxLines) {
                String ellipsize = ELLIPSIZE_STRING + postfix;
                originalText = getText().toString();
                if (!TextUtils.isEmpty(originalText) && originalText.length() > 1) {
                    originalText = originalText.substring(0,
                            originalText.length() - 1 - ellipsize.length());
                    setText(originalText + ellipsize);
                    measure(widthMeasureSpec, heightMeasureSpec);
                }
            } else {
                if (!postfixAdded) {
                    postfixAdded = true;
                    setText(originalText + postfix);
                }
            }
        }
    }
}

There are 2 issues, at least:

1. The postfix is always added to the TextView, no matter whether the text is ellipsized or not.
2. I use this widget in a RecyclerView and on some list item views, the following line causes the IndexOutOfBand exception with the end index being negative (e.g. -4):

originalText = originalText.substring(0,
                            originalText.length() - 1 - ellipsize.length());