fix bot edit text layout multiple lines problem

android/app/src/main/res/layout/fragment_bot.xml

@@ -9,7 +9,7 @@
     <android.support.v7.widget.RecyclerView
         android:id="@+id/chat_bot_room_rv"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:layout_marginBottom="56dp"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
@@ -17,13 +17,18 @@
 
     </android.support.v7.widget.RecyclerView>
 
-    <LinearLayout
+    <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
-        android:layout_height="56dp"
-        app:layout_constraintTop_toBottomOf="@id/chat_bot_room_rv"
+        android:layout_height="wrap_content"
+        android:minHeight="56dp"
+        app:layout_constraintBottom_toBottomOf="parent"
         android:orientation="horizontal">
 
         <EditText
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintRight_toLeftOf="@id/chat_bot_room_send"
             android:id="@+id/chat_bot_room_et"
             android:layout_width="0dip"
             android:layout_height="wrap_content"
@@ -36,28 +41,25 @@
             android:maxLength ="2000"
             android:scrollHorizontally="false"/>
 
-        <LinearLayout
-            android:layout_width="0dp"
-            android:layout_height="match_parent"
-            android:layout_weight="2">
-
-            <ImageButton
-                android:id="@+id/chat_bot_room_send"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:scaleType="fitCenter"
-                android:clickable="true"
-                android:focusable="true"
-                android:background="@drawable/my_custom_selector"
-                android:contentDescription="@string/send_message_button"
-                android:layout_marginStart="15dp"
-                android:layout_marginEnd="15dp"
-                android:layout_marginTop="10dp"
-                android:layout_marginBottom="10dp"/>
-
-        </LinearLayout>
-
-
-    </LinearLayout>
+
+        <ImageButton
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            android:id="@+id/chat_bot_room_send"
+            android:layout_width="36dp"
+            android:layout_height="36dp"
+            android:scaleType="fitCenter"
+            android:clickable="true"
+            android:focusable="true"
+            android:background="@drawable/my_custom_selector"
+            android:contentDescription="@string/send_message_button"
+            android:layout_marginBottom="10dp"
+            android:layout_marginRight="10dp"
+            />
+
+
+
+
+    </android.support.constraint.ConstraintLayout>
 
 </android.support.constraint.ConstraintLayout>
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