添加了界面及逻辑

app/src/main/java/com/sw/platecabinet/fragment/PlateOpenFragment.kt

@@ -0,0 +1,28 @@
+package com.sw.platecabinet.fragment
+
+import android.os.CountDownTimer
+import com.sw.platecabinet.databinding.FragmentPlateOpenBinding
+
+/**
+ * 餐盘柜打开界面
+ */
+class PlateOpenFragment :
+    BaseFragment<FragmentPlateOpenBinding>(FragmentPlateOpenBinding::inflate) {
+    private var totalTimeInMillis: Long = 5 * 1000
+
+    override fun initialize() {
+        initCountTime()
+    }
+
+    fun initCountTime() {
+        object : CountDownTimer(totalTimeInMillis, 1000) {
+            override fun onTick(millisUntilFinished: Long) {
+                binding.tvAutoClose.text = (millisUntilFinished / 1000).toInt().toString()
+            }
+
+            override fun onFinish() {
+                activity?.finish()
+            }
+        }.start()
+    }
+}