diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d36741c..b0f5fd0 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -50,8 +50,9 @@
             android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.HOME" />
+                <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
         <activity
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/view/CommonTopBar.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/view/CommonTopBar.kt
index ffcc26d..7a5acb4 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/view/CommonTopBar.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/view/CommonTopBar.kt
@@ -85,8 +85,8 @@ class CommonTopBar : LinearLayout {
 
         override fun onLevel(level: Int) {
             Log.i(this@CommonTopBar.javaClass.name, "wifiCallback onLevel = $level")
+            mBinding?.wifi?.visibility = if (level > 0) VISIBLE else GONE
             val showLevel = (level + 1) * 20
-            mBinding?.wifi?.visibility = if (showLevel > 0) VISIBLE else GONE
             mBinding?.wifi?.setImageLevel(showLevel)
         }
     }