fix #57 multi-line comment

rocket-chat-android-widgets/src/main/java/chat/rocket/android/widget/message/RocketChatMessageLayout.java

@@ -3,6 +3,7 @@ package chat.rocket.android.widget.message;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.os.Build;
+import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.widget.LinearLayout;
@@ -46,7 +47,29 @@ public class RocketChatMessageLayout extends LinearLayout {
 
   public void setText(String messageBody) {
     removeAllViews();
-    appendTextView(messageBody);
+    if (messageBody.contains("```")) {
+      boolean highlight = false;
+      for (final String chunk : TextUtils.split(messageBody.replace("\r\n", "\n"), "```")) {
+        final String trimmedChunk = chunk.replaceFirst("^\n", "").replaceFirst("\n$", "");
+        if (highlight) {
+          appendHighlightTextView(trimmedChunk);
+        } else if (trimmedChunk.length() > 0) {
+          appendTextView(trimmedChunk);
+        }
+        highlight = !highlight;
+      }
+    } else {
+      appendTextView(messageBody);
+    }
+  }
+
+  private void appendHighlightTextView(String text) {
+    TextView textView = (TextView) inflater.inflate(R.layout.message_body_highlight, this, false);
+    textView.setText(text);
+
+    Linkify.markup(textView);
+
+    addView(textView);
   }
 
   private void appendTextView(String text) {

rocket-chat-android-widgets/src/main/res/drawable/highlight_background_with_border.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+  <solid android:color="@color/highlight_text_background_color"/>
+  <stroke android:width="1dp" android:color="@color/highlight_text_border_color" />
+  <corners android:radius="4dp"/>
+</shape>
\ No newline at end of file

rocket-chat-android-widgets/src/main/res/layout/message_body_highlight.xml

+<?xml version="1.0" encoding="utf-8"?>
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@android:id/text1"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:textAppearance="@style/TextAppearance.RocketChat.MessageBody.Highlight"
+    android:background="@drawable/highlight_background_with_border"
+    android:padding="6dp"
+    android:layout_marginStart="0px"
+    android:layout_marginEnd="6dp"
+    android:layout_marginTop="3dp"
+    android:layout_marginBottom="3dp"
+    />
\ No newline at end of file

rocket-chat-android-widgets/src/main/res/values/message_styles.xml

@@ -4,6 +4,11 @@
   <style name="TextAppearance.RocketChat.MessageBody" parent="TextAppearance.AppCompat.Body1">
 
   </style>
+  <style name="TextAppearance.RocketChat.MessageBody.Highlight">
+    <item name="android:textColor">@color/highlight_text_color</item>
+    <item name="android:typeface">monospace</item>
+    <item name="android:textStyle">bold</item>
+  </style>
 
   <color name="highlight_text_color">#333</color>
   <color name="highlight_text_background_color">#f8f8f8</color>