TextView极细字体

先看UC浏览器的温度

uc_weather.png

要实现17°这样的极细的字体

自定义View

继承TextView，在onDraw方法中设置画笔粗细

TextPaint tp = new TextPaint();
tp.setAntiAlias(true);
tp.setStyle(Paint.Style.FILL_AND_STROKE);
tp.setStrokeWidth(0.1f);

setStrokeWidth方法默认参数是0，而且不接受负数参数，也就是说，只能加粗不能变细。

Spannable

再试试Spannable

Spannable s = new SpannableString("17°29");
s.setSpan(new AbsoluteSizeSpan(30, true), 0, 3, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
s.setSpan(new AbsoluteSizeSpan(30, false), 3, 5, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
s.setSpan(new RelativeSizeSpan(2.0f), 0, 3, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
tv.setText(s);

效果也是一样，可以改变字体大小，但是只能加粗不能变细

Thin字体

从字体本身出发，尝试寻找细细的字体

http://stackoverflow.com/questions/19691530/valid-values-for-androidfontfamily-and-what-they-map-to?answertab=votes#tab-top

Added in Android Jelly Bean (4.1) - API 16 :
Regular (default):

sans-serif
normal 

Italic:

sans-serif
italic

Bold:

sans-serif
bold

Bold-italic:

sans-serif
bold|italic

Light:

sans-serif-light
normal

Light-italic:

sans-serif-light
italic

Thin :

sans-serif-thin
normal

Thin-italic :

sans-serif-thin
italic

Condensed regular:

sans-serif-condensed
normal

Condensed italic:

sans-serif-condensed
italic

Condensed bold:

sans-serif-condensed
bold

Condensed bold-italic:

sans-serif-condensed
bold|italic

Added in Android Lollipop (v5.0) - API 21 :
Medium:

sans-serif-medium
normal

Medium-italic:

sans-serif-medium
italic

Black:

sans-serif-black
italic

我自己的尝试

me_weather.png

系统字体的位置

D:\Android\sdk\platforms\android-N\data\fonts

fonts.xml里配置了字体的别名