Android spinner default style does not support line breaks or font style modification Solutions

Android spinner's default style does not support line breaks and font style changes. Solution requirements: The system displays too much data and requires line breaks, while Android provides android. r. layout. simple_spinner_dropdown_item style does not support line breaks. Therefore, refer to the style modification provided by Android. The Code is as follows: custom Layout file: spinner_dropdown_item.xml is directly copied from Android. R. layout. simple_spinner_dropdown_item. You only need to modify Android: singleline and change it to false to support line feed. <? XML version = "1.0" encoding = "UTF-8"?> <Checkedtextview xmlns: Android = "http://schemas.android.com/apk/res/android" Android: Id = "@ Android: ID/text1" style = "? Android: ATTR/spinnerdropdownitemstyle "Android: singleline =" false "Android: layout_width =" fill_parent "Android: layout_height = "? Android: ATTR/listpreferreditemheight "Android: ellipsize = "marquee"/>================================ ==========/// by default, the font style simple_spinner_item.xml cannot be modified. <? XML version = "1.0" encoding = "UTF-8"?> <Textview xmlns: Android = "http://schemas.android.com/apk/res/android" Android: gravity = "Left" Android: textcolor = "# 2a99fb" Android: textsize = "18sp" Android: textstyle = "bold" Android: singleline = "true" Android: layout_width = "match_parent" Android: layout_height = "wrap_content" Android: ellipsize = "marquee"/>