修改已知问题2.调整渲染图层策略及样式

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

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@drawable/baseline_add_24_press" android:state_selected="true" />
-    <item android:drawable="@drawable/baseline_add_24" android:state_selected="false" />
+    <item android:drawable="@drawable/icon_add_road_p" android:state_selected="true" />
+    <item android:drawable="@drawable/icon_add_road_n" android:state_selected="false" />
 </selector>

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@drawable/icon_add_task_p" android:state_selected="true"></item>
+    <item android:drawable="@drawable/icon_add_task_n" />
+</selector>

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

@@ -154,7 +154,7 @@
             android:id="@+id/main_activity_task_line"
             style="@style/top_right_drawer_btns_style"
             android:onClick="@{()->mainActivity.onClickTaskLink()}"
-            android:src="@drawable/icon_calc_disance" />
+            android:src="@drawable/icon_add_road" />
 
         <ImageButton
             android:id="@+id/main_activity_menu"

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

@@ -58,6 +58,7 @@
         android:layout_height="0dp"
         android:layout_marginTop="12dp"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/task_search" />
+        app:layout_constraintTop_toBottomOf="@id/task_search"
+        tools:ignore="MissingClass" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>