异常记录seterror的文字不显示

今天开发时遇到个小问题，view.seterror的文字由于和theme重叠而无法显示，以前就遇到过，不过想换种方法。

有人说在style里面加<item name="android:textColorPrimaryInverse">@android:color/primary_text_light</item>

<style name="AppBaseTheme" parent="@android:style/Theme.Light.NoTitleBar">          <item name="android:textColorPrimaryInverse">@android:color/primary_text_light</item>          <!--              Theme customizations available in newer API levels can go in              res/values-vXX/styles.xml, while customizations related to              backward-compatibility can go here.          -->      </style>  

有人说：

int ecolor = R.color.black; // whatever color you want				ForegroundColorSpan fgcspan = new ForegroundColorSpan(ecolor);									String estring="用户名不能为空";					SpannableStringBuilder ssbuilder = new SpannableStringBuilder(estring);					ssbuilder.setSpan(fgcspan, 0, estring.length(), 0);					username.setError(ssbuilder);				}