Android TextView implements the encapsulation class of clicking a text hyperlink (without underline), androidtextview

Android TextView implements the encapsulation class of clicking a text hyperlink (without underline), androidtextview

In android, you sometimes need to set some hyperlinks on TextView and perform some operations when you click these hyperlinks. For example, some keywords on Sina Weibo will jump to the corresponding page when you click.

Let's look at the source code for implementation.

/***** Created by Mr. simple, Aug 21,201 41: 51: 40 PM. * Copyright (c) 2014, hehonghui@umeng.com All Rights Reserved. **###################################### ################ * # _ oo0oo _ # * # o8888888o # * #88 ". "88 # * # (|-_-|) # * #0 \ =/0 #*#___/'---'\___#*#. '\ | #'. # * #/\ |: | # * #/_ | -: -|-\ # * # | \-#/| # * # | \ _ | ''\ ---/'' | _/| # *#\. -\__'-'___/-. /#*#___'.. '/--. --\'.. '___#*#. "" '<'. ___ \_< |> _/___. '> '"". # * # | :'-\'.; '\_/';. '/-': | #*#\\'_. \___\/___/. -'// # * ##==== '-. ____'. ___\_____/___. -'___. -'= ==#* #' = --- = '#*#~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~ ####* # Buddha bless never has a BUG #*##*######################## ########################### */package com. umeng. community. utils; import android. content. context; import android. text. html; import android. text. spannable; import android. text. spannableStringBuilder; import android. text. textPaint; import android. text. method. linkMovementMethod; import android. text. style. clickableSpan; import android. text. style. URLSpan; import android. widget. textView;/*** @ author mrsimple */public abstract class TopicSpanWrapper extends ClickableSpan {protected Context mContext; protected TextView mTextView; /*** @ param context * @ param TV */public TopicSpanWrapper (Context context, TextView TV) {mContext = context; mTextView = TV; updateClickSpan (TV );} /*** update Span ** @ param rv */public void updateClickSpan (TextView TV) {// concatenate a hyperlink here. I added a ticket number after the previous step, you can remove String htmlLinkText = "<a href = 'Here you can enter a url'> #" + TV. getText (). toString () + "# </a>"; TV. setText (Html. fromHtml (htmlLinkText); TV. setMovementMethod (LinkMovementMethod. getInstance (); CharSequence text = TV. getText (); if (text instanceof Spannable) {int end = text. length (); Spannable sp = (Spannable) TV. getText (); URLSpan [] urls = sp. getSpans (0, end, URLSpan. class); SpannableStringBuilder style = new SpannableStringBuilder (text); style. clearSpans (); // shocould clear old spans for (URLSpan url: urls) {// set Span style. setSpan (this, sp. getSpanStart (url), sp. getSpanEnd (url), Spannable. SPAN_EXCLUSIVE_EXCLUSIVE);} TV. setText (style) ;}@ Override public void updateDrawState (TextPaint ds) {super. updateDrawState (ds); // remove the underline ds of the hyperlink. setUnderlineText (false );}}

Example:

Public class UserInfoActivity extends FragmentActivity implements OnClickListener {FragmentManager mFragmentMan; private TextView mUserNameTv;/** (non-Javadoc) * @ see android. app. activity # onCreate (android. OS. bundle) */@ Override protected void onCreate (Bundle savedInstanceState) {requestWindowFeature (Window. FEATURE_NO_TITLE); super. onCreate (savedInstanceState); setContentView (R. layout. response); initUIComponents ();}/***/private void initUIComponents () {mFragmentMan = getSupportFragmentManager (); mPostedFragment = new PostedFragment (); mFragmentMan. beginTransaction (). add (R. id. user_info_fragment_container, mPostedFragment, PostedFragment. class. getSimpleName ()). commit (); // the layout is not given. In short, user_name_ TV is a TextView mUserNameTv = (TextView) findViewById (R. id. user_name_ TV);/*** wrap the text in TextView into clickable hyperlinks */new TopicSpanWrapper (this, mUserNameTv) {@ Override public void onClick (View widget) {Toast. makeText (mContext, "click the hyperlink text", Toast. LENGTH_SHORT ). show ();}};}}

Effect:

After clicking

The Toast text in the image is inconsistent with the code because the text in the text is different from the text in my demo. Just ignore this problem.

How to achieve TextView, some text response click to jump to a new page

Adding a property in TextView: android: autoLink = "web" is equivalent to adding a link. I don't know if it is helpful to you.

How does android textview convert text to hyperlink through code?

Set the onclicklistener of textview. This listener calls the browser to open your link.