修复 android 提醒红点问题

android/app/src/main/AndroidManifest.xml

@@ -16,7 +16,6 @@
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:launchMode="singleTask"
         android:networkSecurityConfig="@xml/network_security_config"
         android:theme="@style/AppTheme">
         <activity
@@ -24,6 +23,7 @@
             android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
             android:label="@string/app_name"
             android:screenOrientation="portrait"
+            android:launchMode="singleTask"
             android:windowSoftInputMode="adjustResize">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

src/page/NotificationPage.js

@@ -160,7 +160,7 @@ export default class NotificationPage extends Component {
         }
         Navigation.mergeOptions(this.props.componentId, {
             bottomTab: {
-                badge: msgCount > 0 ? msgCount.toString() : null,
+                badge: msgCount > 0 ? msgCount.toString() : (Platform.OS === 'ios' ? null : ''),
             }
         });
     }