小白求RadioButton图片居中方法~大神进来看图

Question

如题

Answer 1

在论坛里面也回复你了

   @Override
    protected void onDraw(Canvas canvas) {
        Drawable[] drawables = getCompoundDrawables();
        if (drawables != null) {
            Drawable drawableTop = drawables[1];
            if (drawableTop != null) {
                float textHeight=measureHeight(getText().toString());
                int drawablePadding = getCompoundDrawablePadding();
                int drawableHeight = drawableTop.getIntrinsicHeight();
                float bodyHeight = textHeight + drawableHeight + drawablePadding;
                setPadding(0, (int)(getHeight() - bodyHeight), 0, 0);
                canvas.translate(0, 0-(getHeight() - bodyHeight) / 2);
            }
        }
        super.onDraw(canvas);
    }

    //获取文本高度
    public int measureHeight(String text) {
//        Rect result = new Rect();
//        // Measure the text rectangle to get the height
//        getPaint().getTextBounds(text, 0, text.length(), result);
//        return  result.height();
        Paint.FontMetrics fontMetrics= getPaint().getFontMetrics();

        return (int)(fontMetrics.descent-fontMetrics.ascent+ fontMetrics.leading);
    }