Flutter build apk failed

[Pranavmaid]

`Building with sound null safety

Running Gradle task 'assembleRelease'...

FAILURE: Build failed with an exception.

• What went wrong:

Execution failed for task ':app:mergeReleaseResources'.

Multiple task action failures occurred:

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

  > Android resource compilation failed

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-mdpi\ic_launcher.png: AAPT: error: failed to read PNG signature: file does not start with PNG signature.



    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-mdpi\ic_launcher.png: AAPT: error: file failed to compile.

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

  > Android resource compilation failed

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-hdpi\ic_launcher.png: AAPT: error: failed to read PNG signature: file does not start with PNG signature.



    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-hdpi\ic_launcher.png: AAPT: error: file failed to compile.

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

  > Android resource compilation failed

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xhdpi\ic_launcher.png: AAPT: error: failed to read PNG signature: file does not start with PNG signature.



    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xhdpi\ic_launcher.png: AAPT: error: file failed to compile.

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

  > Android resource compilation failed

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xxhdpi\ic_launcher.png: AAPT: error: failed to read PNG signature: file does not start

with PNG signature.

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xxhdpi\ic_launcher.png: AAPT: error: file failed to compile.

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade

  > Android resource compilation failed

    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xxxhdpi\ic_launcher.png: AAPT: error: failed to read PNG signature: file does not start with PNG signature.



    D:\coding\flutter\app\mileagecalculator\android\app\src\main\res\mipmap-xxxhdpi\ic_launcher.png: AAPT: error: file failed to compile.

• Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 13m 59s
Running Gradle task 'assembleRelease'... 849.4s
The build failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try using Jetifier to solve the incompatibility.
✏️ Creating android\settings_aar.gradle... 158ms
√ android\settings_aar.gradle created successfully.
Building plugin flutter_foreground_task...
Running Gradle task 'assembleAarRelease'... 59.6s

FAILURE: Build failed with an exception.

• What went wrong:
  Could not determine the dependencies of task ':compileReleaseAidl'.

SDK location not found. Define location with an ANDROID_SDK_ROOT environment variable or by setting the sdk.dir path in your project's local properties file at 'C:\src\flutter.pub-cache\hosted\pub.dartlang.org\flutter_foreground_task-2.0.5\android\local.properties'.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 56s

The plugin flutter_foreground_task could not be built due to the issue above.`

###########################################################################

please can you solve this issue

[Pranavmaid]

this is the code from my file where i'm using flutter_foreground_task

#########

`
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:intl/intl.dart';
import 'package:mileagecalculator/Database/datamodel.dart';
import 'package:mileagecalculator/pages/infoPage.dart';
import 'package:mileagecalculator/pages/responsive.dart';
import 'package:mileagecalculator/Database/database.dart';
import 'package:rive/rive.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'dart:async';
import 'package:geolocator/geolocator.dart';
import 'package:line_icons/line_icons.dart';
import 'package:flutter_foreground_task/flutter_foreground_task.dart';

bool? icon = false;
bool start = false;
bool speedcheck = false;
String speedCheck = "Still";
double? batteryUsed = 0.00;
double? distancefind = 0.0;
StreamSubscription? _positionStreamSubscription;

class HomePageWidget extends StatefulWidget {
@OverRide
_HomePageWidgetState createState() => _HomePageWidgetState();
}

// The callback function should always be a top-level function.
void callback() {
int updateCount = 0;

FlutterForegroundTask.initDispatcher((timestamp) async {
final strTimestamp = timestamp.toString();
print('callback() - timestamp: $strTimestamp');

FlutterForegroundTask.update(
    notificationTitle: 'callback()',
    notificationText: strTimestamp,
    callback: updateCount >= 10 ? callback2 : null);

updateCount++;

}, onDestroy: (timestamp) async {
print('callback() is dead.. x_x');
});
}

void callback2() {
FlutterForegroundTask.initDispatcher((timestamp) async {
final strTimestamp = timestamp.toString();
print('callback2() - timestamp: $strTimestamp');

FlutterForegroundTask.update(
    notificationTitle: 'callback2()', notificationText: strTimestamp);

}, onDestroy: (timestamp) async {
print('callback2() is dead.. x_x');
});
}

class _HomePageWidgetState extends State {
bool get isPlaying => _controller.isActive;

bool button = false;
final bikeRiveFileName = 'assets/bike.riv';
Artboard? _bikeArtboard;
late StateMachineController _controller;
SMIInput? _pressInput;
TextEditingController titleController = TextEditingController();
TextEditingController startkmController = TextEditingController();
TextEditingController endkmController = TextEditingController();
TextEditingController startchargingController = TextEditingController();
TextEditingController endchargingController = TextEditingController();
late Future<List> data;
List datas = [];
bool fetching = true;
bool bottomdialoag = true;
late int distance;
late int charging;
late int statrtdistance;
late int enddistance;
late int statrtCharging;
late int endCharging;
late LocationPermission permission;
late bool serviceEnabled;
late DB db;
late double startlatitude;
late double startlongitude;
final GeolocatorPlatform _geolocatorPlatform = GeolocatorPlatform.instance;
final _form = GlobalKey();

void _initForegroundTask() {
FlutterForegroundTask.init(
notificationOptions: NotificationOptions(
channelId: 'Mileage_Calculator',
channelName: 'Mileage Calculator',
channelDescription: 'Trip started, Calculating distance...',
channelImportance: NotificationChannelImportance.LOW,
priority: NotificationPriority.LOW,
iconData: NotificationIconData(
resType: ResourceType.mipmap,
resPrefix: ResourcePrefix.ic,
name: 'Mileage_Calculator',
),
),
foregroundTaskOptions: ForegroundTaskOptions(
interval: 5000,
autoRunOnBoot: true,
),
printDevLog: true,
);
}

void _startForegroundTask() {
FlutterForegroundTask.start(
notificationTitle: 'Foreground task is running',
notificationText: 'Tap to return to the app',
callback: callback,
);
}

void _stopForegroundTask() {
FlutterForegroundTask.stop();
}

Future _toggleListening() async {
distancefind = 0.0;
print("In Function");
if (_positionStreamSubscription == null) {
print("In Function if");
//final positionStream = _geolocatorPlatform.getPositionStream();
// Position? start = await Geolocator.getLastKnownPosition();

  _positionStreamSubscription =
      Geolocator.getPositionStream(desiredAccuracy: LocationAccuracy.high)
          .listen((Position position) async {
    //Position start = await Geolocator.getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
    print("Speed is " + position.speed.toString());
    setState(() {
      if (position.speed > 1.4) {
        speedCheck = "Traveling";
        speedcheck = true;
        if (start) {
          start = false;
          print("Start");
          startlatitude = position.latitude;
          startlongitude = position.longitude;
        } else {
          print("in else");
          distancefind = distancefind! +
              Geolocator.distanceBetween(startlatitude, startlongitude,
                      position.latitude, position.longitude) /
                  1000;
          batteryUsed = batteryUsed! +
              (distancefind! / double.parse(batteryCapacity)) * 100;
          startlatitude = position.latitude;
          startlongitude = position.longitude;
        }
      } else if (position.speed > 0.3 && position.speed < 1.4) {
        speedcheck = false;
        speedCheck = "Walking";
      } else {
        speedCheck = "Standing";
      }
    });
    print("Distance is " + distancefind.toString());
    print("Start " +
        // start.latitude.toString() +
        // ", " +
        // start.longitude.toString() +
        "end " +
        position.latitude.toString() +
        ', ok ' +
        position.longitude.toString());
  });
}

setState(() {
  if (_positionStreamSubscription == null) {
    //icon = true;
    print('inside _positionStreamSubscription == null');
    return;
  }
  if (_positionStreamSubscription!.isPaused || icon == false) {
    icon = true;
    _pressInput?.value = true;
    print('inside _positionStreamSubscription.isPaused');
    _positionStreamSubscription!.resume();
    _startForegroundTask();
  } else {
    // icon = false;
    _pressInput?.value = false;
    print('inside _positionStreamSubscription.resume');
    _positionStreamSubscription!.pause();
    _stopForegroundTask();
  }
});

}

void _bikeRiveFile() async {
final bytes = await rootBundle.load(bikeRiveFileName);
final file = RiveFile.import(bytes);

final artboard = file.mainArtboard;
var controller = StateMachineController.fromArtboard(artboard, 'press');
if (controller != null) {
  artboard.addController(controller);
  _pressInput = controller.findInput('pressed');
} else {
  return;
}
setState(() {
  _bikeArtboard = artboard;
  if (_positionStreamSubscription == null ||
      _positionStreamSubscription!.isPaused) {
    _pressInput?.value = false;
  } else {
    _pressInput?.value = true;
  }
});

}

@OverRide
void initState() {
super.initState();
_initForegroundTask();
_bikeRiveFile();
_determinePosition();
db = DB();
}

Future _determinePosition() async {
serviceEnabled = await Geolocator.isLocationServiceEnabled();
if (!serviceEnabled) {
showDialog(
context: context,
builder: (BuildContext context) {
return alert(context);
},
);
//Alert Box
//On Location
// await Geolocator.openLocationSettings();
return Future.error('Location services are disabled.');
}

permission = await Geolocator.checkPermission();
if (permission == LocationPermission.denied) {
  permission = await Geolocator.requestPermission();
  if (permission == LocationPermission.denied) {
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return alert(context);
      },
    );
    //Alert Box
    //Give Access
    // await Geolocator.openAppSettings();
    return Future.error('Location permissions are denied');
  }
}

if (permission == LocationPermission.deniedForever) {
  showDialog(
    context: context,
    builder: (BuildContext context) {
      return alert(context);
    },
  );
  //Alert Box
  //Give Access
  // await Geolocator.openAppSettings();
  return Future.error(
      'Location permissions are permanently denied, we cannot request permissions.');
}
return await Geolocator.getCurrentPosition();

}

@OverRide
void dispose() {
super.dispose();
}

void setDatatoSP() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.setString('trip_name', titleController.text);
prefs.setString('start_km', startkmController.text);
prefs.setString('start_charge_percentage', startchargingController.text);
}

void removeDatatoSP() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
await prefs.remove('trip_name');
await prefs.remove('start_km');
await prefs.remove('start_charge_percentage');
}

AlertDialog alert(context) => AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(32.0))),
title: Center(
child: Text(
"Location Access Error",
style: TextStyle(fontWeight: FontWeight.bold, color: Colors.white),
textAlign: TextAlign.center,
)),
content: Container(
height: 30,
child: Center(
child: Text(
"Please Give Location Access",
style: TextStyle(
color: Colors.white,
),
textAlign: TextAlign.center,
),
),
),
actions: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
TextButton(
child: Text("Get Access"),
onPressed: () async {
await Geolocator.openAppSettings();
Navigator.of(context).pop();
}),
],
),
],
);
AlertDialog name(context) => AlertDialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(32.0))),
title: Center(
child: Text(
"Enter Trip Name",
style: TextStyle(fontWeight: FontWeight.bold, color: Colors.white),
textAlign: TextAlign.center,
)),
content: Form(
key: _form,
child: Container(
height: 50,
child: Center(
child: TextFormField(
controller: titleController,
validator: (String? value) {
if (value!.isEmpty) {
return "Please enter Trip Name";
}
return null;
},
keyboardType: TextInputType.number,
inputFormatters: [
LengthLimitingTextInputFormatter(3),
],
obscureText: false,
decoration: InputDecoration(
hintText: 'Trip 1',
hintStyle: TextStyle(
color: Colors.white,
fontSize: 17,
),
enabledBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Colors.transparent,
width: 1,
),
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(20),
bottomRight: Radius.circular(20),
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
),
),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(
color: Colors.transparent,
width: 1,
),
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(20),
bottomRight: Radius.circular(20),
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
),
),
filled: true,
fillColor: Color(0xFF43464C),
),
style: TextStyle(
color: Colors.white,
fontSize: 18,
),
textAlign: TextAlign.center,
),
),
),
),
actions: [
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
SizedBox(
width: 15,
),
TextButton(
child: Text("Save"),
onPressed: () {
db.insertData(DataModel(
title: titleController.text,
dateTimeadd: DateFormat('d/M/y hh:mm a')
.format(DateTime.now())
.toString(),
distance: distancefind.toString(),
savecharging: batteryUsed.toString(),
electricity: (double.parse(batteryCap) *
(batteryUsed! / 100) *
double.parse(electricityPrice))
.toString(),
petrol: ((distancefind! /
double.parse(petrolVehicalMileage)) *
double.parse(petrolPrize))
.toString()));
setState(() {
_pressInput?.value = false;
distancefind = 0.0;
batteryUsed = 0.00;
icon = false;
_positionStreamSubscription!.pause();
});
_stopForegroundTask();
Navigator.of(context).pop();
}),
TextButton(
child: Text("cancel"),
onPressed: () {
Navigator.of(context).pop();
}),
],
),
],
);
@OverRide
Widget build(BuildContext context) {
SizeConfig().init(context);
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData.dark(),
home: WithForegroundTask(
child: Scaffold(
appBar: AppBar(
// leading: ,
centerTitle: true,
elevation: 0,
backgroundColor: Color(0xFF22262B),
automaticallyImplyLeading: false,
title: Text(
"MileageCalculator",
textAlign: TextAlign.center,
style: TextStyle(fontSize: 20),
),
actions: [
IconButton(
onPressed: () {
Navigator.push(context,
MaterialPageRoute(builder: (context) => InfoPage()));
},
icon: Icon(LineIcons.infoCircle))
],
),
floatingActionButtonLocation:
FloatingActionButtonLocation.centerFloat,
floatingActionButton: Row(
crossAxisAlignment: CrossAxisAlignment.end,
// mainAxisAlignment: MainAxisAlignment.end,
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
width: 8,
),
FloatingActionButton(
backgroundColor: Color(0xFF03ADC6),
child: (_positionStreamSubscription == null ||
_positionStreamSubscription!.isPaused)
? Icon(Icons.play_arrow)
: Icon(Icons.pause),
onPressed: () async {
// print(serviceEnabled);
permission = await Geolocator.checkPermission();
if (permission == LocationPermission.denied) {
permission = await Geolocator.requestPermission();
if (permission == LocationPermission.denied) {
showDialog(
context: context,
builder: (BuildContext context) {
return alert(context);
},
);
return Future.error('Location permissions are denied');
}
} else if (permission == LocationPermission.deniedForever) {
showDialog(
context: context,
builder: (BuildContext context) {
return alert(context);
},
);
return Future.error(
'Location permissions are permanently denied, we cannot request permissions.');
} else {
print("Pressed");
setState(() {
// icon = true;
});
start = true;
_toggleListening();
}
},
),
SizedBox(
width: 8,
),
icon!
? InkWell(
onLongPress: () {
setState(() {
print('reset');
_pressInput?.value = false;
distancefind = 0.0;
batteryUsed = 0.00;
icon = false;
_positionStreamSubscription!.pause();
});
},
child: FloatingActionButton(
backgroundColor: Colors.red,
child: Icon(Icons.stop),
onPressed: () {
showDialog(
context: context,
builder: (BuildContext context) {
return name(context);
},
);
},
),
)
: Container()
],
),
backgroundColor: Color(0xFF22262B),
body: SafeArea(
child: Column(
// mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
padding: EdgeInsets.fromLTRB(0, 10, 0, 0),
// decoration: BoxDecoration(
// color: Colors.white,
// borderRadius: BorderRadius.all(Radius.circular(32)),
// ),
child: Center(
child: Container(
width: 400,
height: 180,
child: _bikeArtboard == null
? const SizedBox(
child: Center(
child: Text("Loading.."),
),
)
: Rive(
fit: BoxFit.fitWidth,
artboard: _bikeArtboard!,
),
),
),
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(10, 25, 10, 0),
child: Container(
//padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
width: MediaQuery.of(context).size.width / 2.25,
height: MediaQuery.of(context).size.width / 2.25,
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(10),
topRight: Radius.circular(10),
bottomLeft: Radius.circular(10),
bottomRight: Radius.circular(10)),
color: Colors.grey[800],
),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
distancefind!.toStringAsFixed(2),
style: TextStyle(fontSize: 24),
),
Text(
distanceUnit,
style: TextStyle(fontSize: 20),
),
SizedBox(
height: 10,
),
// Text(
// speedCheck,
// style: TextStyle(
// fontSize: 24, fontStyle: FontStyle.italic),
// )
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(speedcheck
? LineIcons.biking
: LineIcons.shoePrints),
SizedBox(
width: 8,
),
Text(
speedCheck,
style: TextStyle(
fontSize: 16,
fontStyle: FontStyle.italic),
)
],
)
],
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 25, 10, 0),
child: Container(
//padding: EdgeInsets.fromLTRB(10, 10, 10, 10),
width: MediaQuery.of(context).size.width / 2.25,
height: MediaQuery.of(context).size.width / 2.25,
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(10),
topRight: Radius.circular(10),
bottomLeft: Radius.circular(10),
bottomRight: Radius.circular(10)),
color: Colors.grey[800],
),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
batteryUsed!.toStringAsFixed(2),
style: TextStyle(fontSize: 24),
),
Text(
"% Used",
style: TextStyle(fontSize: 20),
),
SizedBox(
height: 10,
),
// Text(
// speedCheck,
// style: TextStyle(
// fontSize: 24, fontStyle: FontStyle.italic),
// )
Icon(LineIcons.batteryAlt2Full),
SizedBox(
width: 8,
),
],
),
),
),
],
),
],
),
// child: Container(
// width: MediaQuery.of(context).size.width,
// height: MediaQuery.of(context).size.height,
// child: Center(
// child: Column(
// mainAxisAlignment: MainAxisAlignment.center,
// mainAxisSize: MainAxisSize.max,
// children: [
// Container(
// padding: EdgeInsets.all(10),
// child: Center(
// child: Column(
// children: [
// Text(
// distancefind!.toStringAsFixed(2),
// style: TextStyle(fontSize: 72),
// ),
// Text(
// "KM",
// style: TextStyle(fontSize: 20),
// ),
// SizedBox(
// height: 10,
// ),
// Text(
// speedCheck,
// style: TextStyle(
// fontSize: 24, fontStyle: FontStyle.italic),
// )
// ],
// ),
// ),
// ),
// ],
// ),
// ),
// ),
),
),
),
);
}
}
`

[Dev-hwang]

When I checked the error, it seems that the ic_launcher.png file is most likely wrong. Check out this answer.
https://stackoverflow.com/a/48590453

flutter_launcher_icons plugin to create the correct ic_launcher.png.

And before building the APK file, please refer to the guide provided by Flutter.
https://flutter.dev/docs/deployment/android

When all settings are complete, run the flutter clean command and then run flutter pub get. And would you like to build the apk file?