Aligning drawableLeft with text of button

Question

Here is my layout:

The issue I\'m facing is with the drawable checkmark. H

Answer 1

I had the same issue, and I've come up with a solution that doesn't require XML changes or custom Views.

This code snippet retrieves the width of the text and the left/right drawables, and sets the Button's left/right padding so there will only be enough space to draw the text and the drawables, and no more padding will be added. This can be applied to Buttons as well as TextViews, their superclasses.

public class TextViewUtils {
    private static final int[] LEFT_RIGHT_DRAWABLES = new int[]{0, 2};

    public static void setPaddingForCompoundDrawableNextToText(final TextView textView) {
        ViewTreeObserver vto = textView.getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                shinkRoomForHorizontalSpace(textView);
            }
        });

    }

    private static void shinkRoomForHorizontalSpace(TextView textView) {
        int textWidth = getTextWidth(textView);
        int sideCompoundDrawablesWidth = getSideCompoundDrawablesWidth(textView);
        int contentWidth = textWidth + sideCompoundDrawablesWidth;
        int innerWidth = getInnerWidth(textView);
        int totalPadding = innerWidth - contentWidth;
        textView.setPadding(totalPadding / 2, 0, totalPadding / 2, 0);
    }

    private static int getTextWidth(TextView textView) {
        String text = textView.getText().toString();
        Paint textPaint = textView.getPaint();
        Rect bounds = new Rect();
        textPaint.getTextBounds(text, 0, text.length(), bounds);
        return bounds.width();
    }

    private static int getSideCompoundDrawablesWidth(TextView textView) {
        int sideCompoundDrawablesWidth = 0;
        Drawable[] drawables = textView.getCompoundDrawables();
        for (int drawableIndex : LEFT_RIGHT_DRAWABLES) {
            Drawable drawable = drawables[drawableIndex];
            if (drawable == null)
                continue;
            int width = drawable.getBounds().width();
            sideCompoundDrawablesWidth += width;
        }
        return sideCompoundDrawablesWidth;
    }

    private static int getInnerWidth(TextView textView) {
        Rect backgroundPadding = new Rect();
        textView.getBackground().getPadding(backgroundPadding);
        return textView.getWidth() - backgroundPadding.left - backgroundPadding.right;
    }
}

Notice that:

• It actually still leaves some more space than needed (good enough for my purposes, but you may look for the error)
• It overwrites whatever left/right padding is there. I guess it's not difficult to fix that.

To use it, just call TextViewUtils.setPaddingForCompoundDrawableNextToText(button) on your onCreate or onViewCreated().