add* backup and restore db

android/app/build.gradle

@@ -45,7 +45,7 @@ android {
     defaultConfig {
         applicationId "com.thamringroup.assetstock"
         minSdkVersion 18
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         multiDexEnabled true

android/app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
     <application
         android:name="${applicationName}"
         android:label="assetstock"
@@ -21,7 +22,8 @@
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
+            android:windowSoftInputMode="adjustResize"
+            android:exported="true">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues

lib/home.dart

@@ -45,8 +45,7 @@ class _HomeState extends State<Home> {
     super.initState();
     WidgetsBinding.instance.addPostFrameCallback((_) async {
 //      await loadMenu();
-      await util.permissionCheck(context,pHandler.Permission.storage,()async{print("storage permit granted!");},customMessage: " untuk menyimpan data backup");
-
+      await util.permissionCheck(context,pHandler.Permission.manageExternalStorage,()async{print("storage permit granted!");},customMessage: " untuk menyimpan data backup");
     });
   }