desc:初始获取wifi信号强度

app/src/main/java/com/yinuo/safetywatcher/watcher/ui/view/CommonTopBar.kt

@@ -78,6 +78,8 @@ class CommonTopBar : LinearLayout {
 //            }
             if (!enable) {
                 mBinding?.wifi?.visibility = GONE
+            } else {
+                mBinding?.wifi?.visibility = VISIBLE
             }
         }
 
@@ -175,7 +177,7 @@ class CommonTopBar : LinearLayout {
         SimHelper.removeCallback(simCallback)
     }
 
-    fun tryFocusBackArea(){
+    fun tryFocusBackArea() {
         mBinding?.backArea?.requestFocus()
     }
 }

app/src/main/java/com/yinuo/safetywatcher/watcher/utils/WifiHelper.kt

@@ -2,11 +2,13 @@ package com.yinuo.safetywatcher.watcher.utils
 
 import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Context.WIFI_SERVICE
 import android.content.Intent
 import android.content.IntentFilter
 import android.net.wifi.WifiManager
 import android.util.Log
 
+
 object WifiHelper {
     private var callbacks = mutableListOf<OnWifiLevelCallback>()
     private var mWifiState = -1;
@@ -36,6 +38,12 @@ object WifiHelper {
 
     fun init(context: Context) {
         watchWifi(context)
+        // 如果当前已经连接wifi 初始化获取其信号强度
+        val wifiService = context.applicationContext.getSystemService(WIFI_SERVICE) as WifiManager?
+        val wifiInfo = wifiService?.connectionInfo
+        wifiInfo?.rssi?.let {
+            mRssi = WifiManager.calculateSignalLevel(it, 5)
+        }
     }
 
     private fun watchWifi(context: Context) {