How make spacing between letters in Android TextView?

Question

I need make design from photoshop layout. There are some fonts on the layouts. Designer gave me this fonts. But on layout in photoshop, he use spacing between letters. How i can realize this in android textView? I found one solution:

answer on stackoverflow

answer two

but if i make myTextView extends TextView it work wrong. If i adapt for one devise, on the device with biger display, spacing between letters increase is not proportional.

EDIT

public class MyTextView extends TextView {
    private float letterSpacing = 0.0f;
    private CharSequence originalText = "";
    private Typeface typeface;

    public MyTextView(Context context) {
        this(context, null);
        isInEditMode();
    }

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

    public MyTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        TypedArray attributesArray = getResources().obtainAttributes(attrs, R.styleable.MyTextView);
        letterSpacing = attributesArray.getDimension(R.styleable.MyTextView_letterSpacing, 0.0f);
        String fontName = attributesArray.getString(R.styleable.MyTextView_fontName);
        if(!this.isInEditMode()) {
            if (null == fontName) {
                typeface = Fonts.getBlockBertholdRegular(context);
            } else {
                typeface = Fonts.get(context, fontName);
            }
            super.setTypeface(typeface);
        }
        originalText = super.getText();
        applyLetterSpacing();
        this.invalidate();
    }

    public float getLetterSpacing() {
        return letterSpacing;
    }

    public void setLetterSpacing(float letterSpacing) {
        this.letterSpacing = letterSpacing;
        applyLetterSpacing();
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        originalText = text;
        applyLetterSpacing();
    }

    @Override
    public CharSequence getText() {
        return originalText;
    }

    private void applyLetterSpacing() {
        if (this == null || this.originalText == null) return;
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < originalText.length(); i++) {
            String c = "" + originalText.charAt(i);
            builder.append(c.toUpperCase());
            if (i + 1 < originalText.length()) {
                builder.append("\u00A0");
            }
        }
        SpannableString finalText = new SpannableString(builder.toString());
        if (builder.toString().length() > 1) {
            for (int i = 1; i < builder.toString().length(); i += 2) {
                finalText.setSpan(new ScaleXSpan((letterSpacing + 1) / 10), i, i + 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
        }

        super.setText(finalText, BufferType.SPANNABLE);
        if(!this.isInEditMode()) {
            super.setTypeface(typeface);
        }
    }
}

Answer 1

Try using the new TextView API method setLetterSpacing. See here

EDIT

You can also create your own font with spaces inside the font itself and apply it to your TextView.

Answer 2

Since API 21 You can use

setLetterSpacing

Documentation can be found here