android：TextView中的文本連接之--點擊連接跳轉總結（2種方法+2個實例應用）

 最近作了一些東西，涉及到比較重要些的技術點有：TextView正則匹配、文本連接、點擊連接頁面跳轉，外加一個連接文本去掉默認的下劃線。其實大部分都是從技術文檔上學到的，應用了一下。便於之後查看，特別總結一下。若有更好的方法意見，望指點。

1、重寫ClickableSpan類，點擊跳轉，並去掉默認的下劃線

If an object of this type is attached to the text of a TextView with a movement method of LinkMovementMethod, the affected spans of text can be selected. If clicked, the onClick(View) method will be called.

默認超連接都帶下劃線的，重寫ClickableSpan 去掉下劃線：

private class MyClickSpan extends ClickableSpan { 
String text;
public NoLineClickSpan(String text) {
super();
this.text = text;
}
@Override
public void updateDrawState(TextPaint ds) {
ds.setColor(ds.linkColor); //設置連接的文本顏色
ds.setUnderlineText(false); //去掉下劃線
}
@Override
public void onClick(View widget) {

processHyperLinkClick(text); //點擊超連接時調用
}
}

把超連接文本封裝爲MyClickSpan 對象，並添加到TextView中；

TextView tv = findViewById(R.id.tv_click);
SpannableString spStr = new SpannableString("試試看http://2711822222.163.com");
MyClickSpan clickSpan = new MyClickSpan (); //設置超連接
spStr.setSpan(clickSpan, 0, str.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
tv.append(spStr);
tv.setMovementMethod(LinkMovementMethod.getInstance());//設置超連接爲可點擊狀態

參考：http://orgcent.com/android-textview-no-underline-hyperlink/

2、微博中匹配@ 和#xxx#爲文本連接，點擊連接至此人頁面。

文本頁面

點擊@科幻世界，傳遞了文本連接的文字內容

點擊#介已一，傳遞了文本連接的文字內容

 

顯示文本的activity:

TextView txt = (TextView) findViewById(R.id.txt);
extractMention2Link(txt);

public static void extractMention2Link(TextView v) {
        v.setAutoLinkMask(0);
        Pattern pattern = Pattern.compile("@(\\w+?)(?=\\W|$)");  
        String scheme = String.format("%s/?%s=", Defs.SCHEMA, Defs.PARAM_UID);
        Linkify.addLinks(v, pattern, scheme, null, new TransformFilter() {
      @Override
      public String transformUrl(Matcher match, String url) {
       Log.d(TAG, match.group(1));
       return match.group(1); // 要傳到到此人頁面的東西
      }
     });        
        Pattern pattern1 = Pattern.compile("#(\\w+?)#");
        String scheme1 = String.format("%s/?%s=", Defs.SCHEMA1, Defs.PARAM_UID);
        Linkify.addLinks(v, pattern1, scheme1, null, new TransformFilter() {
      @Override
      public String transformUrl(Matcher match, String url) {
       Log.d(TAG, match.group(1));
       return match.group(1); // 要傳到到此人頁面的東西
      }
     });        
 }

Manifest.xml中，設置要跳轉到的Activity

<activity android:name=".Profile" >
          <intent-filter>
              <action android:name="android.intent.action.VIEW" />
              <category android:name="android.intent.category.DEFAULT" />
              <category android:name="android.intent.category.BROWSABLE" />
              <data android:scheme="devdiv" android:host="sina_profile"/>
   </intent-filter>
        </activity>
        <activity android:name=".Profile1" >
   <intent-filter>
              <action android:name="android.intent.action.VIEW" />
              <category android:name="android.intent.category.DEFAULT" />
              <category android:name="android.intent.category.BROWSABLE" />
              <data android:scheme="devdiv" android:host="sina_profile1"/>
   </intent-filter>
        </activity>

Defs.java

 public class Defs {
 public static final String SCHEMA = "devdiv://sina_profile";
 public static final String SCHEMA1 = "devdiv://sina_profile1";
 public static final String PARAM_UID = "uid";
}

Profile.java

public class Profile extends Activity {
 private static final String TAG = "Profile";
 private static final Uri PROFILE_URI = Uri.parse(Defs.SCHEMA); 
 private String uid; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);  
  extractUidFromUri();
  setTitle("Profile:Hello, " + uid);
 } 
 private void extractUidFromUri() {
  Uri uri = getIntent().getData();
        if (uri != null && PROFILE_URI.getScheme().equals(uri.getScheme())) {
          uid = uri.getQueryParameter(Defs.PARAM_UID);
             Log.d(TAG, "uid from url: " + uid);
        }
 }
}

Profile1.java

public class Profile1 extends Activity {
 private static final String TAG = "Profile";
 private static final Uri PROFILE_URI = Uri.parse(Defs.SCHEMA); 
 private String uid; 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);  
  extractUidFromUri();
  setTitle("Profile1:Hello, " + uid);
 } 
 private void extractUidFromUri() {
  Uri uri = getIntent().getData();
        if (uri != null && PROFILE_URI.getScheme().equals(uri.getScheme())) {
          uid = uri.getQueryParameter(Defs.PARAM_UID);
             Log.d(TAG, "uid from url: " + uid);
        }
 }
}

參考自：http://www.devdiv.com/forum.php?mod=viewthread&tid=35696&extra=&ordertype=2&page=1

實例一：

Textview裏匹配的文字有不一樣的顏色顯示，可點擊連接

SpannableString checkInSpanStr = new SpannableString("xxxxxxxxxx")
hilightAtUserName(checkInSpanStr);
tvContent.setText(checkInSpanStr);

tv.setMovementMethod(LinkMovementMethod.getInstance());//設置超連接爲可點擊狀態

 private void hilightAtUserName(SpannableString spannableStr) {
       Pattern pattern = Pattern.compile(ConstantsConfig.AT_USER_NAME_REG_EXP);//正則匹配
       Matcher matcher = pattern.matcher(spannableStr);
       int start, end;
       while (matcher.find()) {
              start = matcher.start();
              end = matcher.end();
              spannableStr.setSpan(new ForegroundColorSpan(0xFF0099FA), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
       }
   }

實例二：

 已知String參數爲 ：before<at username="aaa" name="a" id="25"> :第一個 </at>after<at username="bbb" name="b" id="26">: </at>over

最後顯示：before @aaa  第一個 after @bbb  over

點擊 aaa 傳遞25 點擊bbb傳遞26 到我的頁

調用：

    String strA=RevoPubAccess.getUsefulText(commentContent);
    String strDisplay =RevoPubAccess.getDisplayText(strA);    
    SpannableString checkInSpanStr = new SpannableString(strDisplay); 
    RevoPubAccess.setTextLink(context, strA, checkInSpanStr);
    listItemView.mCommenttext.setText(checkInSpanStr); 
    listItemView.mCommenttext.setMovementMethod(LinkMovementMethod.getInstance());

/**
  * change <at </at> text to @ username id text 
  * @param ori   before<at   username="aaa"   name="a"  id="25"> :第一個 </at>after<at   username="bbb"   name="b" id="25">: </at>over
  * @return   before@aaa :25 第一個 after@bbb :25  over
  */
  public static final String getUsefulText(String ori) {
   StringBuilder rs = new StringBuilder();
   int index = 0;
   Pattern pattern = Pattern.compile("<at.+?</at>");
   Matcher matcher = pattern.matcher(ori);
   while (matcher.find()) {
       rs.append(ori.substring(index, matcher.start()));      
       Pattern pattern1 = Pattern.compile("username=\".+?\"");
       Matcher matcher1 = pattern1.matcher(matcher.group());
       if (matcher1.find()) {
            rs.append("@"+matcher1.group().replaceAll("username\\s*=\\s*", "").replaceAll("\"", ""));
       } else {
         //  rs.append("沒有username屬性");
       }          
       Pattern pattern2 = Pattern.compile("id=\".+?\"");
       Matcher matcher2 = pattern2.matcher(matcher.group());
       if (matcher2.find()) {
           rs.append(":"+matcher2.group().replaceAll("id\\s*=\\s*", "").replaceAll("\"", "")+" ");
       } else {
          // rs.append("沒有id屬性");
       }
       Pattern pattern3 = Pattern.compile(":.*\\s");
       Matcher matcher3 = pattern3.matcher(matcher.group());
       if (matcher3.find()) {
//        Log.e("3", matcher3.group());
           rs.append(matcher3.group().replaceAll(":", ""));
       } else {
          // rs.append("沒有texttent屬性");
       }
       index = matcher.end();
   }
   rs.append(ori.substring(index, ori.length()));   
   Log.e("-----",  ori);
   Log.e("-----",  rs.toString());  
   return rs.toString();
 }
 
  /**
   * get the @username text for display
   * @param usefulText  before@aaa :25 第一個 after@bbb :25  over
   * @return
   */
  public static final String getDisplayText(String usefulText) {
   StringBuilder rs = new StringBuilder();
   int index = 0;
   Pattern pattern = Pattern.compile("@.+?\\s");
   Matcher matcher = pattern.matcher(usefulText);
   while (matcher.find()) {
       rs.append(usefulText.substring(index, matcher.start()));      
       Pattern pattern1 = Pattern.compile("username=\".+?\"");
       Matcher matcher1 = pattern1.matcher(matcher.group());
//       if (matcher1.find()) {
//            rs.append("@"+matcher1.group().replaceAll("username\\s*=\\s*", "").replaceAll("\"", ""));
//       } else {
//         //  rs.append("沒有username屬性");
//       }  
       String[]aa=matcher.group().split(":");
       rs.append(aa[0]+" ");
       index = matcher.end();
   }
   rs.append(usefulText.substring(index, usefulText.length()));   
   return rs.toString();  
 }

 

public  static final void setTextLink(Context con, String userfulText, SpannableString checkInSpanStr) 
 {  
   Log.e("checkInSpanStr", checkInSpanStr.toString());
   Pattern pattern = Pattern.compile("@.+?\\s");     
      Matcher matcher = pattern.matcher(checkInSpanStr); 
      while (matcher.find()) {
       String id = "" ;
//       Log.e("3", matcher.group());

       Pattern pattern1 = Pattern.compile(matcher.group().replaceAll("\\s", "")+":.+?\\s"); 
       Matcher matcher1 = pattern1.matcher(userfulText);
       if(matcher1.find())
       {
         id=matcher1.group().replaceAll("@.+?:", "");
         Log.e("revoId", id);
       }
       final String revoId=id;            
       checkInSpanStr.setSpan(new RevoClickSpan(con, revoId) , matcher.start(), matcher.end(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);//Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
//       
      }       
  }

/**  * remove underline and jump to mypage  * @author Lyra  * 2012.4.20  */ public class RevoClickSpan extends ClickableSpan {  Context mContext;  String mId;  @Override  public void onClick(View widget) {   Log.e("click", mId);         Intent i= new Intent (mContext,MyPage.class);          i.putExtra(Base.WHOSEID, mId);   mContext.startActivity(i);  }       public RevoClickSpan(Context con,  String id) {          super();          this.mContext = con;          this.mId = id;      }       @Override      public void updateDrawState(TextPaint ds) {          ds.setColor(Color.RED);//設置鏈接的文本顏色          ds.setUnderlineText(false); //去掉下劃線      } } 

另外：如下的博文很不錯，能夠參考：

http://www.2cto.com/kf/201109/106431.html

http://zhangning290.iteye.com/blog/1134286

http://www.cnblogs.com/ryan1012/archive/2011/07/12/2104087.html

http://blog.csdn.net/tianqixin/article/details/6785457