优化首页背景图和返回按钮虚化问题

app/src/main/java/com/ckkj/defense_device/home/HomeMenuFragment.kt

@@ -7,7 +7,7 @@ import android.content.pm.PackageManager
 import android.graphics.Color
 import android.os.Build
 import android.graphics.Rect
-import android.graphics.drawable.GradientDrawable
+
 import android.os.Bundle
 import android.util.Log
 import android.util.TypedValue
@@ -263,12 +263,7 @@ class HomeMenuFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        // 为 LinearLayout 设置渐变背景
-        setGradientBackground(
-            view = binding.gradientLayout,
-            startColor = resources.getColor(R.color.gradientLayout1),
-            endColor = resources.getColor(R.color.gradientLayout2)
-        )
+        binding.gradientLayout.setBackgroundColor(Color.TRANSPARENT)
         binding.message.setOnClickListener {
             val intent = Intent(requireContext(), MessageActivity::class.java)
             startActivity(intent)
@@ -589,17 +584,6 @@ class HomeMenuFragment : Fragment() {
         }
     }
 
-    private fun setGradientBackground(
-        view: View,
-        startColor: Int,
-        endColor: Int,
-        orientation: GradientDrawable.Orientation = GradientDrawable.Orientation.TL_BR
-    ) {
-        val gradientDrawable = GradientDrawable(orientation, intArrayOf(startColor, endColor))
-        gradientDrawable.gradientType = GradientDrawable.LINEAR_GRADIENT
-        view.background = gradientDrawable
-    }
-
     override fun onDestroyView() {
         super.onDestroyView()
         binding.rvFamilyList.adapter = null

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

@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="@mipmap/home_back"
     tools:context=".home.HomeMenuFragment">
 
     <LinearLayout
@@ -140,7 +141,8 @@
             android:layout_marginRight="12dp"
             android:layout_marginTop="12dp"
             android:layout_height="0dp"
-            android:layout_weight="1">
+            android:layout_weight="1"
+            android:background="@android:color/transparent">
 
             <androidx.recyclerview.widget.RecyclerView
                 android:id="@+id/rvDeviceList"
@@ -152,6 +154,7 @@
                 android:clipToPadding="false"
                 android:nestedScrollingEnabled="false"
                 android:paddingBottom="16dp"
+                android:background="@android:color/transparent"
                 tools:listitem="@layout/item_device" />
         </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>