android 获取字符串在屏幕中所占像素宽度和高度

1、直接获取：
paint.measureText(yourString);

2、把字符串放到矩形中：

Paint paint = new Paint();
Rect rect = new Rect();
paint.getTextBounds(yourString, 0, 1, rect);
字符串宽度=rect.width();
字符串高度=rect.height();