优化UI

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

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true">
+        <shape android:shape="rectangle">
+            <corners android:radius="@dimen/size_icon_big"/>
+            <solid android:color="@color/green_pressed"/>
+        </shape>
+    </item>
+
+    <!--<item android:state_enabled="false">
+        <shape android:shape="rectangle">
+            <corners android:radius="@dimen/margin_ss"/>
+            <solid android:color="@color/green_logo"/>
+        </shape>
+    </item>-->
+    <item>
+        <shape android:shape="rectangle">
+            <corners android:radius="@dimen/size_icon_big"/>
+            <solid android:color="@color/green_logo"/>
+        </shape>
+    </item>
+</selector>

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

@@ -84,8 +84,11 @@
 
     <android.widget.Button
         android:id="@+id/btn_login"
-        android:layout_width="match_parent"
+        android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:paddingStart="@dimen/size_image_normal"
+        android:paddingEnd="@dimen/size_image_normal"
         android:minHeight="0dp"
         android:layout_marginTop="@dimen/size_image_s"
         android:layout_marginStart="@dimen/margin_default"
@@ -95,7 +98,7 @@
         android:text="@string/login_in_up"
         android:textColor="@color/white"
         android:textStyle="bold"
-        android:background="@drawable/selector_btn"
+        android:background="@drawable/selector_btn_round"
         style="?android:attr/borderlessButtonStyle"/>
 
 </LinearLayout>