The TextPaint worked well to measure the text length in pixel.
I've implemented my ScrollTextView successfully.
Here's my codes to calculate the scrolling length.
Just for your information.
private void calculateScrollingLen() {
TextPaint tp = getPaint();
Rect rect = new Rect();
String strTxt = getText().toString();
tp.getTextBounds(strTxt, 0, strTxt.length(), rect);
mScrollingLen = rect.width() + getWidth();
rect = null;
}
Thank you!
And your website looks sharp!
On 1月6日, 下午3时11分, "心蓝" <kyowxf2...@gmail.com> wrote:
> U can use TextPaint class ,and the method in this class is measureText, then
> get one char width!
> Any question u can post topic inhttp://androidos.cc/bbs,
> 2009/1/6 Xiongzh <zx.zhangxi...@gmail.com>
>
>
>
>
>
> > Hi all,
>
> > I'll like to know how to calculate the actual pixels a text occupies
> > in the screen from its font size.
>
> > Say, my font size of the text in TextView is 20.5px.
> > It doesn't mean that every character of the text occupies 20.5px in
> > the screen, does it?
>
> > I'm inheriting android.widget.TextView to implement a TextView which
> > text can be scrolled automatically. Just as the behavior of the HTML
> > <marquee/>.
>
> > I need to know the actual pixels the text occupied to determine how
> > far I shall scroll the text.
> > However the getTextSize() * getText().length() is much longer than the
> > actual length of the text, so I can't make the text re-displayed on
> > time.
>
> > Thank you in advance for helping me.
>
> > BR
> > xion...@beijing, China
>
> > dirtybea...@hotmail.com
>
> --
> Welcome to my site about GPhone:http://51gphone.cn
> I am a GFans！！欢迎你来到我的GPhone网站！！http://51gphone.cn
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