I'm using permission_handler package to ask for read permissions for storage in my app everything is working fine in debug mode and when i run my code with "flutter run --release" but the problem arises when i export my code as an apk the permissions dialog doesn't appear. i have no idea what I'm doing wrong here please help me out!!
here is the androidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.edithautotech.edithdisplayrelease"> <!-- io.flutter.app.FlutterApplication is an android.app.Application that calls FlutterMain.startInitialization(this); in its onCreate method. In most cases you can leave this as-is, but you if you want to provide additional functionality it is fine to subclass or reimplement FlutterApplication and put your custom class here. --> <!-- Permissions options for the 'storage' group--> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="com.android.vending.BILLING" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <application android:name="io.flutter.app.FlutterApplication" android:label="Edith Display" android:icon="@mipmap/ic_launcher"> <activity android:name=".MainActivity" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize"> <!-- 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 to determine the Window background behind the Flutter UI. --> <meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/NormalTheme" /> <!-- Displays an Android View that continues showing the launch screen Drawable until Flutter paints its first frame, then this splash screen fades out. A splash screen is useful to avoid any visual gap between the end of Android's launch screen and the painting of Flutter's first frame. --> <meta-data android:name="io.flutter.embedding.android.SplashScreenDrawable" android:resource="@drawable/launch_background" /> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> <!-- Don't delete the meta-data below. This is used by the Flutter tool to generate GeneratedPluginRegistrant.java --> <meta-data android:name="flutterEmbedding" android:value="2" /> </application> </manifest>
here is the dart code
import 'package:fluttertoast/fluttertoast.dart';
import 'package:permission_handler/permission_handler.dart';
class HomeScreen extends StatefulWidget {
static const routeName = "/gallery";
@override
_HomeScreenState createState() => _HomeScreenState();
}
class _HomeScreenState extends State<HomeScreen>
with SingleTickerProviderStateMixin {
PermissionStatus _storageStatus = PermissionStatus.restricted;
@override
void initState() {
super.initState();
_initPermission();
}
void _initPermission() async {
final PermissionStatus status = await _permission.request();
setState(() {
_storageStatus = status;
});
}
void _checkPermission({Function handler}) async {
switch (_storageStatus) {
case PermissionStatus.granted:
handler();
break;
case PermissionStatus.denied:
Fluttertoast.showToast(msg: "Storage permission denied");
break;
case PermissionStatus.restricted:
Fluttertoast.showToast(msg: "Storage permission restricted");
break;
case PermissionStatus.permanentlyDenied:
Fluttertoast.showToast(msg: "Storage permission permanently denied");
break;
case PermissionStatus.undetermined:
Fluttertoast.showToast(msg: "Storage permission undermined");
break;
}
}
Void onUploadButtonClick(){
// showing media from device here
}
@override
Widget build(BuildContext context) {
final ThemeData theme = Theme.of(context);
return Scaffold(
appBar: AppBar(
title: Text(
widget.restaurantName,
style: theme.appBarTheme.textTheme.headline1,
),),
body: Container(color: Colors.Green),
floatingActionButton: FloatingActionButton.extended(
onPressed: () {
Fluttertoast.showToast(msg: "Upload Pressed");
_checkPermission(
handler: () =>
onUploadButtonClick(context, user: widget.user),
);
},
label: Text(
'Upload',
style: theme.textTheme.button,
),
icon: Icon(
Icons.cloud_upload,
size: 30,
),
)
);
}
}
I'm pretty sure I figured out this problem: https://stackoverflow.com/a/64235930/2025941
I solved it with a couple different ways:
#Flutter Wrapper
-keep class io.flutter.app.** { *; }
-keep class io.flutter.plugin.** { *; }
-keep class io.flutter.util.** { *; }
-keep class io.flutter.view.** { *; }
-keep class io.flutter.** { *; }
-keep class io.flutter.plugins.** { *; }
-keep class androidx.lifecycle.** { *; } #https://github.com/flutter/flutter/issues/58479
#https://medium.com/@swav.kulinski/flutter-and-android-obfuscation-8768ac544421
buildTypes {
release {
profile {
matchingFallbacks = ['debug', 'release']
}
minifyEnabled true
useProguard true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.release
}
}
lintOptions {
disable 'InvalidPackage'
checkReleaseBuilds false
}
flutter channel master
I also migrated android to AndroidX in Android Studio by navigating to SDK manager->SDK tools->checking and downloading Google Play services
I also made sure that compile SDK and target SDK is 29; there are issues with permission_handler package with SDK 30 at the moment.
I also edited the kotlin main activity file:
package yourpackage
import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant
class MainActivity: FlutterActivity() {
override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
GeneratedPluginRegistrant.registerWith(flutterEngine);
}
}
I tried to solve this but due to the time constraints I solved this by just creating a new project and copying my code there it worked!! but this seems like a promising solution. Thanx for your efforts !!
After all these, Flutter clean solved the issue for me. Thank you.
Just to get it clear, you've said switching to channel master alone should also solve the problem?
No, switching to channel master alone will not solve the problem............try the other methods I mentioned...
Adding "-keep class androidx.lifecycle.** { *; }" to prograurdrules.pro worked for me, but I didn't followed any other steps mentioned.