稍微完善输入法以及输入法体验页

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

@@ -0,0 +1,14 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#FFFFFF" />
+    
+    <stroke
+        android:width="1dp"
+        android:color="#FFFFFF" />
+
+    <corners
+        android:topLeftRadius="36dp"
+        android:topRightRadius="36dp"
+        android:bottomLeftRadius="0dp"
+        android:bottomRightRadius="0dp" />
+</shape>