同一个textview中设置字体不同样式

例子1:

设置部分文字背景高亮显示:

Java代码
public class HighLightActivity extends Activity {          
String strs="我的心太乱了,给我点空白。";          
TextView textview;          int start =3;          int end = 5;          
/** Called when the activity is first created. */         
@Override         public void onCreate(Bundle savedInstanceState) {              
    super.onCreate(savedInstanceState);              
    setContentView(R.layout.high_light);              
    textview=(TextView)findViewById(R.id.textview);              
    SpannableStringBuilder style=new SpannableStringBuilder(strs);             
     style.setSpan(new BackgroundColorSpan(Color.RED),start,end,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);              
    textview.setText(style);                        
  }           
}           

 

同时设置文字和背景高亮显示:

Java代码
 public class HighLightActivity extends Activity {          
    String strs="我的心太乱了,给我点空白。";          
  TextView textview;          int start =3;          int end = 5;       
 /** Called when the activity is first created. */         
@Override         
public void onCreate(Bundle savedInstanceState) {              
    super.onCreate(savedInstanceState);              
    setContentView(R.layout.high_light);              
    textview=(TextView)findViewById(R.id.textview);              
 SpannableStringBuilder style=new SpannableStringBuilder(strs);              
style.setSpan(new BackgroundColorSpan(Color.RED),start,end,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);             
 style.setSpan(new ForegroundColorSpan(Color.RED),7,9,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);            
  textview.setText(style);                       
   }          
}
 

参数说明:
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
API里面解释:Spans of type SPAN_EXCLUSIVE_EXCLUSIVE do not expand to include text inserted at either their starting or ending point. They can never have a length of 0 and are automatically removed from the buffer if all the text they cover is removed.
即在原文本头或尾追加新文本的样式不受原文本样式影响,原文本高亮,新追加文本不高亮。

Spannable.SPAN_EXCLUSIVE_INCLUSIVE
API里面解释:Non-0-length spans of type SPAN_INCLUSIVE_EXCLUSIVE expand to include text inserted at their ending point but not at their starting point. When 0-length, they behave like points.
即在原文本尾追加新文本的样式受原文本样式影响,原来文本尾高亮,新追加文本也高亮

例子2:

功能:实现在一个TextView里显示了一行字符串,需要这个串里字符显示不同颜色.

 


代码如下:

 

 
 

第二种方式:

 String newMessageInfo = "<font color='red'><b>" + 红色内容
                + "</b></font>TextView学习显示不同颜色";

  mTextView.setTextView(Html.fromHtml(newMessageInfo));

 

例子3:

SpannableString ss = new SpannableString( "红色打电话粗体删除线绿色下划线图片:.");
        ss.setSpan(new ForegroundColorSpan(Color.RED), 0, 2,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        ss.setSpan(new URLSpan("tel:4155551212"), 2, 5,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        ss.setSpan(new StyleSpan(Typeface.BOLD), 5, 7, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        ss.setSpan(new StrikethroughSpan(), 7, 10,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        ss.setSpan(new UnderlineSpan(), 10, 16,Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        ss.setSpan(new ForegroundColorSpan(Color.GREEN), 10, 15, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        Drawable d = getResources().getDrawable(R.drawable.icon48x48_1);
        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
        ImageSpan span = new ImageSpan(d, ImageSpan.ALIGN_BASELINE);
        ss.setSpan(span, 18, 19, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);

        TextView t4 = (TextView) findViewById(R.id.text4);
        t4.setText(ss);
        
        t4.setMovementMethod(LinkMovementMethod.getInstance());

       

 

例子4:

TextView是用来显示文本的,有时需要给TextView中的个别字设置为超链接,或者设置个别字的颜色、字体等,那就需要用到Spannable对象,可以借助Spannable对象实现以上设置。
效果图: 



Activity代码:
 
 public class TextViewLinkActivity extends Activity {       
TextView myTextView;       
@Override     
 public void onCreate(Bundle savedInstanceState) {           
super.onCreate(savedInstanceState);           
setContentView(R.layout.main);           
myTextView = (TextView) this.findViewById(R.id.myTextView);                      
//创建一个 SpannableString对象          
SpannableString sp = new SpannableString("这句话中有百度超链接,有高亮显示,这样,或者这样,还有斜体.");           
//设置超链接         
 sp.setSpan(new URLSpan("http://www.baidu.com"), 57,                   
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);          
 //设置高亮样式一         
 sp.setSpan(new BackgroundColorSpan(Color.RED), 17 ,19,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);           
//设置高亮样式二          sp.setSpan(new ForegroundColorSpan(Color.YELLOW),20,24,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);             
//设置斜体          
sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 2729, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);     
     
 //SpannableString对象设置给TextView          
myTextView.setText(sp);          
 //设置TextView可点击        
  myTextView.setMovementMethod(LinkMovementMethod.getInstance());      
 }   
}
 
设置字体大小和颜色
String conValue=“aa”;
             String sSendTimeValue="bbb"
             Spannable WordtoSpan = new SpannableString(conValue+"\n"+sSendTimeValue);  
             WordtoSpan.setSpan(new AbsoluteSizeSpan(30), 0, conValue.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);  
             WordtoSpan.setSpan(new AbsoluteSizeSpan(20), conValue.length(), conValue.length()+sSendTimeValue.length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
             WordtoSpan.setSpan(new ForegroundColorSpan(Color.GRAY), conValue.length(), conValue.length()+sSendTimeValue.length()+1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
txtName.setText(WordtoSpan);
posted @ 2012-12-14 12:22  rui90102  阅读(533)  评论(0编辑  收藏  举报