Issue #168 bugfix for links not being clickable, adds autoLink feature including web, phone, map and email

Author: kenodoggy

app/src/main/java/com/zulip/android/activities/RecyclerMessageAdapter.java

@@ -11,17 +11,14 @@
 import android.support.v7.app.AppCompatDelegate;
 import android.support.v7.widget.RecyclerView;
 import android.text.format.DateUtils;
+import android.text.method.LinkMovementMethod;
 import android.util.Log;
 import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
-import com.zulip.android.models.Person;
 import com.j256.ormlite.stmt.UpdateBuilder;
-import com.zulip.android.models.Stream;
-import com.zulip.android.networking.AsyncPointerUpdate;
-
 import com.squareup.picasso.Picasso;
 import com.zulip.android.R;
 import com.zulip.android.ZulipApp;
@@ -362,6 +359,7 @@ public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
                 MessageHolder messageHolder = ((MessageHolder) holder);
                 final Message message = ((Message) items.get(position));
                 messageHolder.contentView.setText(message.getFormattedContent(zulipApp));
+                messageHolder.contentView.setMovementMethod(LinkMovementMethod.getInstance());
 
                 if (message.getType() == MessageType.STREAM_MESSAGE) {
                     messageHolder.senderName.setText(message.getSender().getName());

app/src/main/java/com/zulip/android/models/Message.java

@@ -1,22 +1,5 @@
 package com.zulip.android.models;
 
-import java.io.IOException;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.Callable;
-
-import org.apache.commons.lang.builder.EqualsBuilder;
-import org.apache.commons.lang.builder.HashCodeBuilder;
-import org.ccil.cowan.tagsoup.HTMLSchema;
-import org.ccil.cowan.tagsoup.Parser;
-import org.json.JSONArray;
-import org.json.JSONException;
-import org.json.JSONObject;
-
 import android.content.Context;
 import android.graphics.Color;
 import android.graphics.Rect;
@@ -25,16 +8,36 @@
 import android.text.Html;
 import android.text.Spanned;
 import android.text.TextUtils;
+import android.text.util.Linkify;
 import android.util.Log;
 
 import com.j256.ormlite.dao.RuntimeExceptionDao;
 import com.j256.ormlite.field.DatabaseField;
 import com.j256.ormlite.misc.TransactionManager;
 import com.j256.ormlite.stmt.DeleteBuilder;
 import com.j256.ormlite.table.DatabaseTable;
+import com.zulip.android.ZulipApp;
 import com.zulip.android.util.CustomHtmlToSpannedConverter;
 import com.zulip.android.util.ZLog;
-import com.zulip.android.ZulipApp;
+
+import org.apache.commons.lang.builder.EqualsBuilder;
+import org.apache.commons.lang.builder.HashCodeBuilder;
+import org.ccil.cowan.tagsoup.HTMLSchema;
+import org.ccil.cowan.tagsoup.Parser;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Callable;
+
+import static com.zulip.android.util.CustomHtmlToSpannedConverter.linkifySpanned;
 
 @DatabaseTable(tableName = "messages")
 public class Message {
@@ -531,7 +534,8 @@ public Drawable getDrawable(String source) {
 
         CustomHtmlToSpannedConverter converter = new CustomHtmlToSpannedConverter(
                 source, null, null, parser, emojiGetter, app.getServerURI());
-        return converter.convert();
+
+        return linkifySpanned(converter.convert(), Linkify.ALL);
     }
 
 }

app/src/main/java/com/zulip/android/util/CustomHtmlToSpannedConverter.java

@@ -22,6 +22,7 @@
 import android.graphics.Paint;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
+import android.support.annotation.NonNull;
 import android.text.Html;
 import android.text.Layout;
 import android.text.Spannable;
@@ -40,6 +41,8 @@
 import android.text.style.TypefaceSpan;
 import android.text.style.URLSpan;
 import android.text.style.UnderlineSpan;
+import android.text.util.Linkify;
+import android.util.Pair;
 
 import org.ccil.cowan.tagsoup.Parser;
 import org.xml.sax.Attributes;
@@ -51,7 +54,9 @@
 
 import java.io.IOException;
 import java.io.StringReader;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 
 public class CustomHtmlToSpannedConverter implements ContentHandler {
 
@@ -687,4 +692,31 @@ private static int convertValueToInt(CharSequence charSeq,
 
         return Integer.parseInt(nm.substring(index), base) * sign;
     }
+
+    /**
+     * Parses Spanned text for existing html links and reapplies them.
+     * @see <a href="https://developer.android.com/reference/android/text/util/Linkify.html">Linkify</a>
+     *
+     * @param spann
+     * @param mask bitmask to define which kinds of links will be searched and applied (e.g. <a href="https://developer.android.com/reference/android/text/util/Linkify.html#ALL">Linkify.ALL</a>)
+     * @return
+     */
+    public static Spanned linkifySpanned(@NonNull final Spanned spann, final int mask) {
+        URLSpan[] existingSpans = spann.getSpans(0, spann.length(), URLSpan.class);
+        List<Pair<Integer, Integer>> links = new ArrayList<>();
+
+        for (URLSpan urlSpan : existingSpans) {
+            links.add(new Pair<>(spann.getSpanStart(urlSpan), spann.getSpanEnd(urlSpan)));
+        }
+
+        Linkify.addLinks((Spannable) spann, mask);
+
+        // add the links back in
+        for (int i = 0; i < existingSpans.length; i++) {
+            ((Spannable) spann).setSpan(existingSpans[i], links.get(i).first, links.get(i).second, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
+
+        return spann;
+    }
+
 }