扫码附件设备，链接设备动画

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

@@ -2,6 +2,8 @@ package com.example.defenseapplication.home
 
 import android.content.Intent
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
 import android.view.View
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
@@ -12,10 +14,12 @@ import com.example.defenseapplication.adapter.Device
 import com.example.defenseapplication.databinding.AddDeviceActivityBinding
 import com.gyf.immersionbar.ImmersionBar
 
+//添加设备页面
 class AddDeviceActivity : AppCompatActivity() {
 
     private lateinit var binding: AddDeviceActivityBinding
-
+    private lateinit var adapter: AddDeviceAdapter
+    private val mainHandler = Handler(Looper.getMainLooper())
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = AddDeviceActivityBinding.inflate(layoutInflater)
@@ -28,7 +32,31 @@ class AddDeviceActivity : AppCompatActivity() {
             finish()
         }
 
-        setupDeviceList()
+        // 开始播放扫描动画，动画结束后再显示设备列表
+        startScanAnimationThenShowList()
+    }
+
+    private fun startScanAnimationThenShowList() {
+        // 显示动画层
+        binding.animationContainer.visibility = View.VISIBLE
+        binding.rvDevices.visibility = View.GONE
+
+        // 设置帧动画并启动
+        binding.ivScanAnimation.setImageResource(R.drawable.device_frame_animation)
+        val scanDrawable = binding.ivScanAnimation.drawable
+        if (scanDrawable is android.graphics.drawable.AnimationDrawable) {
+            scanDrawable.start()
+        }
+
+        // 模拟扫描过程
+        mainHandler.postDelayed({
+            // 停止动画
+            (binding.ivScanAnimation.drawable as? android.graphics.drawable.AnimationDrawable)?.stop()
+            // 隐藏动画层，显示列表
+            binding.animationContainer.visibility = View.GONE
+            binding.rvDevices.visibility = View.VISIBLE
+            setupDeviceList() // 加载设备列表
+        }, 3000) // 动画播放时长，可根据实际帧动画总时长调整
     }
 
     private fun setupDeviceList() {
@@ -38,20 +66,38 @@ class AddDeviceActivity : AppCompatActivity() {
         )
 
         if (devices.isEmpty()) {
-            binding.emptyState.visibility = View.VISIBLE
+
             binding.rvDevices.visibility = View.GONE
         } else {
-            binding.emptyState.visibility = View.GONE
+
             binding.rvDevices.visibility = View.VISIBLE
 
             binding.rvDevices.layoutManager = GridLayoutManager(this, 2)
-            // 传入点击回调
-            binding.rvDevices.adapter = AddDeviceAdapter(devices) { device ->
-                // 跳转到 AddFamilyActivity（选择Wi-Fi页面）
+            adapter = AddDeviceAdapter(devices) { device ->
                 val intent = Intent(this, AddFamilyActivity::class.java)
                 intent.putExtra("device_name", device.name)
                 startActivity(intent)
             }
+            binding.rvDevices.adapter = adapter
+        }
+    }
+    override fun onPause() {
+        super.onPause()
+        // 停止所有可见 item 的动画
+        for (i in 0 until binding.rvDevices.childCount) {
+            val child = binding.rvDevices.getChildAt(i)
+            val holder = binding.rvDevices.getChildViewHolder(child) as? AddDeviceAdapter.ViewHolder
+            holder?.stopAnimation()
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        // 重新启动所有可见 item 的动画
+        for (i in 0 until binding.rvDevices.childCount) {
+            val child = binding.rvDevices.getChildAt(i)
+            val holder = binding.rvDevices.getChildViewHolder(child) as? AddDeviceAdapter.ViewHolder
+            holder?.startAnimation()
         }
     }
 }