SpannableStringBuilder

设置指定文字颜色：

 

String str = "There are 36 apps in your phone.";
int index = appNum.indexOf("apps");
SpannableStringBuilder ss = new SpannableStringBuilder(str);
ForegroundColorSpan span=new ForegroundColorSpan(Color.parseColor("#F79719"));  
ss.setSpan(span,16, index, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(ss)      

 

ss.setSpan(new BackgroundColorSpan(Color.RED),start,end,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);      

 

 

设置指定文字大小：

 

String param = "abc"  ;
String text = param  + "dfdjkfjdkfjdfjdkf" ;

SpannableStringBuilder ss = new SpannableStringBuilder(text);
ss.setSpan(new StyleSpan(Typeface.BOLD),0, param.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
ss.setSpan(new AbsoluteSizeSpan(30,true), 0, param.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
ss.setSpan(new AbsoluteSizeSpan(16,true), param.length(), text.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 
textView.setText(ss);

 

 文字加下划线：

public void underline(int start,int end){  
        SpannableStringBuilder spannable=new SpannableStringBuilder(getText().toString());  
        CharacterStyle span=new UnderlineSpan();  
        spannable.setSpan(span, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);  
        setText(spannable);  
    }