获取字体的高度和宽度

Rect rect= new Rect();
Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
textPaint.setTextAligh(Paint.Align.Right);
textPaint.setTextSize(12);
textPaint.getTextBounds("ABC", 0, "ABC".length(),rect);
int textHeight = rect.height();
int textWidth = textPaint.measureText("ABC");