优化UI

app/src/main/java/com/example/defenseapplication/home/HomeMenuFragment.kt

@@ -1,12 +1,17 @@
 package com.example.defenseapplication.home
 
+import android.graphics.Color
+import android.graphics.Rect
+import android.graphics.drawable.GradientDrawable
 import android.os.Bundle
+import android.util.TypedValue
 import androidx.fragment.app.Fragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.example.defenseapplication.adapter.DeviceAdapter
 import com.example.defenseapplication.adapter.DeviceUi
 import com.example.defenseapplication.adapter.FamilyAdapter
@@ -49,6 +54,17 @@ class HomeMenuFragment : Fragment() {
         return binding.root
     }
 
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        // 为 LinearLayout 设置渐变背景
+        setGradientBackground(
+            view = binding.gradientLayout,
+            startColor = Color.parseColor("#EBDCED"),
+            endColor = Color.parseColor("#CAF4FF")
+        )
+    }
+
     private fun initView() {
         binding.rvFamilyList.layoutManager = LinearLayoutManager(requireContext())
         binding.rvFamilyList.adapter = familyAdapter
@@ -56,6 +72,11 @@ class HomeMenuFragment : Fragment() {
 
         binding.rvDeviceList.layoutManager = GridLayoutManager(requireContext(), 2)
         binding.rvDeviceList.adapter = deviceAdapter
+        if (binding.rvDeviceList.itemDecorationCount == 0) {
+            binding.rvDeviceList.addItemDecoration(
+                GridHorizontalSpaceItemDecoration(horizontalSpace = dpToPx(8))
+            )
+        }
         updateDeviceList()
 
         binding.tvCurrentFamily.text = currentFamily
@@ -94,6 +115,45 @@ class HomeMenuFragment : Fragment() {
         deviceAdapter.submitList(familyDeviceMap[currentFamily].orEmpty())
     }
 
+    private fun dpToPx(dp: Int): Int {
+        return TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP,
+            dp.toFloat(),
+            resources.displayMetrics
+        ).toInt()
+    }
+
+    private class GridHorizontalSpaceItemDecoration(
+        private val horizontalSpace: Int
+    ) : RecyclerView.ItemDecoration() {
+        override fun getItemOffsets(
+            outRect: Rect,
+            view: View,
+            parent: RecyclerView,
+            state: RecyclerView.State
+        ) {
+            val position = parent.getChildAdapterPosition(view)
+            if (position == RecyclerView.NO_POSITION) return
+
+            if (position % 2 == 0) {
+                outRect.right = horizontalSpace / 2
+            } else {
+                outRect.left = horizontalSpace / 2
+            }
+        }
+    }
+
+    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/java/com/example/defenseapplication/login/ForgetPasswordActivity.kt

@@ -1,5 +1,7 @@
 package com.example.defenseapplication.login
 
+import android.graphics.Color
+import android.graphics.drawable.GradientDrawable
 import android.os.Bundle
 import android.os.CountDownTimer
 import android.text.InputType
@@ -32,7 +34,10 @@ class ForgetPasswordActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         binding = ForgetPasswordActivityBinding.inflate(layoutInflater)
         setContentView(binding.root)
-
+        // 设置渐变背景
+        val startColor = Color.parseColor("#CBEBFA")
+        val endColor = Color.parseColor("#FFF2EF")
+        setGradientBackground(binding.main, startColor, endColor)
         setupClickListeners()
     }
 
@@ -168,6 +173,16 @@ class ForgetPasswordActivity : AppCompatActivity() {
 
 
     }
+    private fun setGradientBackground(
+        view: android.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 onDestroy() {
         super.onDestroy()

app/src/main/java/com/example/defenseapplication/login/LoginActivity.kt

@@ -1,5 +1,7 @@
 package com.example.defenseapplication.login
 import android.content.Intent
+import android.graphics.Color
+import android.graphics.drawable.GradientDrawable
 import com.example.defenseapplication.R
 import android.os.Bundle
 import android.os.CountDownTimer
@@ -22,6 +24,11 @@ class LoginActivity : AppCompatActivity() {
         binding = ActivityLoginBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
+        // 设置渐变背景
+        val startColor = Color.parseColor("#CBEBFA")
+        val endColor = Color.parseColor("#FFF2EF")
+        setGradientBackground(binding.main, startColor, endColor)
+
         setupTabListeners()
         setupClickListeners()
         switchToSmsMode()
@@ -159,4 +166,15 @@ class LoginActivity : AppCompatActivity() {
             }
         }.start()
     }
+
+    private fun setGradientBackground(
+        view: android.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
+    }
 }

app/src/main/java/com/example/defenseapplication/login/RegisterActivity.kt

@@ -1,6 +1,8 @@
 package com.example.defenseapplication.login
 
 import android.content.Intent
+import android.graphics.Color
+import android.graphics.drawable.GradientDrawable
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
@@ -19,7 +21,10 @@ class RegisterActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         binding = RegisterActivityBinding.inflate(layoutInflater)
         setContentView(binding.root)
-
+        // 设置渐变背景
+        val startColor = Color.parseColor("#CBEBFA")
+        val endColor = Color.parseColor("#FFF2EF")
+        setGradientBackground(binding.main, startColor, endColor)
         setupListeners()
         //setupTextWatchers()
     }
@@ -187,4 +192,14 @@ class RegisterActivity : AppCompatActivity() {
 //    private fun validatePassword(password: String): Boolean {
 //        return password.length in 6..20
 //    }
+    private fun setGradientBackground(
+        view: android.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
+    }
 }

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

@@ -220,7 +220,7 @@
         android:id="@+id/loginBtn"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
+        android:layout_marginTop="40dp"
         android:text="登录"
         android:textSize="18sp"
         android:background="@drawable/rounded_blue_bg"

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

@@ -12,6 +12,7 @@
         android:id="@+id/fragment_container"
         android:layout_width="match_parent"
         android:layout_height="0dp"
+        android:background="#F5F6F6"
         app:layout_constraintBottom_toTopOf="@id/bottom_layout"
         app:layout_constraintTop_toTopOf="parent"/>
 

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

@@ -3,7 +3,6 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="#F9F9F9 "
     tools:context=".home.HomeMenuFragment">
 
     <LinearLayout
@@ -12,6 +11,7 @@
         android:orientation="vertical">
 
         <LinearLayout
+            android:id="@+id/gradient_layout"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="vertical"
@@ -101,25 +101,22 @@
                     </FrameLayout>
                 </LinearLayout>
             </LinearLayout>
-        </LinearLayout>
-
             <TextView
                 android:id="@+id/tvDeviceTitle"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-            android:layout_marginStart="16dp"
                 android:layout_marginTop="14dp"
                 android:layout_marginEnd="16dp"
                 android:text="设备"
                 android:textColor="@color/black"
                 android:textSize="16dp"
                 android:textStyle="bold" />
+        </LinearLayout>
 
         <GridLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginStart="16dp"
-            android:layout_marginTop="8dp"
             android:layout_marginEnd="16dp"
             android:columnCount="2"
             android:orientation="vertical"

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

@@ -2,7 +2,7 @@
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:tools="http://schemas.android.com/tools"
-android:background="@color/login_background"
+android:background="@color/white"
 android:id="@+id/main"
 android:padding="16dp"
 android:layout_width="match_parent"