How to use SpannableString

最新推荐文章于 2020-08-24 23:34:31 发布

yang_ren_

最新推荐文章于 2020-08-24 23:34:31 发布

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本文详细介绍如何在Android中使用SpannableString实现多种文本样式，包括放大文本、加粗、下划线、斜体、删除线、改变颜色、高亮显示、上标与下标效果等，并介绍了如何为文本添加链接及创建可点击区域。

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 // make the text twice as large
 
      
 styledString.setSpan(
 new
 RelativeSizeSpan(2f), 
 0
 ,
 5
 ,
 0
 );
 
       
 
      
 // make text bold
 
      
 styledString.setSpan(
 new
 StyleSpan(Typeface.BOLD), 
 7
 ,
 11
 ,
 0
 );
 
       
 
      
 // underline text
 
      
 styledString.setSpan(
 new
 UnderlineSpan(), 
 13
 ,
 23
 ,
 0
 );
 
       
 
      
 // make text italic
 
      
 styledString.setSpan(
 new
 StyleSpan(Typeface.ITALIC), 
 25
 ,
 31
 ,
 0
 );
 
       
 
      
 styledString.setSpan(
 new
 StrikethroughSpan(), 
 33
 ,
 46
 ,
 0
 );
 
       
 
      
 // change text color
 
      
 styledString.setSpan(
 new
 ForegroundColorSpan(Color.GREEN), 
 48
 ,
 55
 ,
 0
 );
 
       
 
      
 // highlight text
 
      
 styledString.setSpan(
 new
 BackgroundColorSpan(Color.CYAN), 
 57
 ,
 68
 ,
 0
 );
 
       
 
      
 // superscript
 
      
 styledString.setSpan(
 new
 SuperscriptSpan(), 
 72
 ,
 83
 ,
 0
 );
 
      
 // make the superscript text smaller
 
      
 styledString.setSpan(
 new
 RelativeSizeSpan(
 0
 .5f),
 72
 ,
 83
 ,
 0
 );
 
       
 
      
 // subscript
 
      
 styledString.setSpan(
 new
 SubscriptSpan(), 
 87
 ,
 96
 ,
 0
 );
 
      
 // make the subscript text smaller
 
      
 styledString.setSpan(
 new
 RelativeSizeSpan(
 0
 .5f),
 87
 ,
 96
 ,
 0
 );
 
       
 
      
 // url
 
      
 styledString.setSpan(
 new
 URLSpan(
 "http://www.google.com"
 ),
 98
 ,
 101
 ,
 0
 );
 
       
 
      
 // clickable text
 
      
 ClickableSpan clickableSpan = 
 new
 ClickableSpan() {
 
     
 
    
 @Override
 
    
 public
 void 
  onClick(View widget) {
 
     
 // We display a Toast. You could do anything you want here.
 
     
 Toast.makeText(SpanExample.
 this
 ,
 "Clicked"
 , Toast.LENGTH_SHORT).show();
 
      
 
    
 }
 
   
 };