Add front-end for activity_level and activity_chat

app/src/main/res/drawable/buttton_grey.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
+    <corners
+        android:radius="4dp"
+        />
+    <solid
+        android:color="#e8e8e8"
+        />
+    <padding
+        android:left="0dp"
+        android:top="0dp"
+        android:right="0dp"
+        android:bottom="0dp"
+        />
+    <size
+        android:width="190dp"
+        android:height="30dp"
+        />
+</shape>
\ No newline at end of file

app/src/main/res/drawable/buttton_login.xml

+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
+    <corners
+        android:radius="14dp"
+        />
+    <solid
+        android:color="#0CE1E8"
+        />
+    <padding
+        android:left="0dp"
+        android:top="0dp"
+        android:right="0dp"
+        android:bottom="0dp"
+        />
+    <size
+        android:width="270dp"
+        android:height="60dp"
+        />
+    <stroke
+        android:width="2dp"
+        android:color="#878787"
+        />
+</shape>
\ No newline at end of file

app/src/main/res/layout/activity_chat.xml

@@ -9,6 +9,7 @@
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
+    android:background="@drawable/layout_bg"
     tools:context="com.example.leo.fitnessdiy.ChatActivity">
 
     <android.support.design.widget.FloatingActionButton

app/src/main/res/layout/activity_history.xml

@@ -7,7 +7,6 @@
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:padding="16dp"
-    android:background="@drawable/layout_bg"
     tools:context="com.example.leo.fitnessdiy.HIstoryActivity">
         <android.support.v7.widget.CardView
             android:id="@+id/jogging"

app/src/main/res/layout/activity_home.xml

@@ -14,7 +14,7 @@
 
         <Button
             android:id="@+id/history_button"
-            android:layout_width="0dp"
+            android:layout_width="2dp"
             android:layout_weight="1"
             android:layout_height="wrap_content"
             android:onClick="openHistory"
@@ -22,7 +22,7 @@
 
         <Button
             android:id="@+id/exercise_button"
-            android:layout_width="0dp"
+            android:layout_width="2dp"
             android:layout_weight="1"
             android:layout_height="wrap_content"
             android:onClick="changeFragment"

app/src/main/res/layout/activity_level.xml

@@ -11,32 +11,41 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="Select Your Level"
-        android:layout_marginBottom="80dp"
+        android:layout_gravity="center"
+        android:layout_marginTop="30dp"
+        android:layout_marginBottom="40dp"
         android:textSize="40sp" />
 
     <RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_gravity="left">
+        android:layout_gravity="center"
+        android:background="@drawable/layout_bg"
+        android:minWidth="200dp">
+
         <RadioButton
+            android:id="@+id/level_begineer"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:id="@+id/level_begineer"
-            android:text="@string/beginner"
             android:onClick="selectLevel"
-            />
+            android:textSize="22sp"
+            android:text="@string/beginner" />
+
         <RadioButton
+            android:id="@+id/level_intermediate"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:id="@+id/level_intermediate"
-            android:text="@string/intermediate"
-            android:onClick="selectLevel"/>
+            android:onClick="selectLevel"
+            android:textSize="22sp"
+            android:text="@string/intermediate" />
+
         <RadioButton
+            android:id="@+id/level_advanced"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:id="@+id/level_advanced"
-            android:text="@string/advanced"
-            android:onClick="selectLevel"/>
+            android:onClick="selectLevel"
+            android:textSize="22sp"
+            android:text="@string/advanced" />
     </RadioGroup>
 
 

app/src/main/res/layout/activity_login.xml

@@ -34,15 +34,17 @@
         android:textSize="20sp"
         android:layout_height="50dp"
         android:layout_gravity="center"
+        android:background="@drawable/buttton_login"
         android:layout_margin="8dp"
         android:onClick="doLogin"
         android:text="@string/login" />
 
     <Button
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+        android:layout_width="191dp"
+        android:layout_height="30dp"
         android:layout_gravity="center"
-        android:text="Don't Have Account?"
         android:layout_margin="8dp"
-        android:onClick="toRegister"/>
+        android:background="@drawable/buttton_grey"
+        android:onClick="toRegister"
+        android:text="Don't Have Account?" />
 </LinearLayout>