Question

如果我在Flutter的geolocator: ^3.0.0文件中添加了pubspec.yaml，则我的Android应用无法生成并引发如下错误：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformClassesWithMultidexlistForDebug'.
> com.android.build.api.transform.TransformException: Error while generating the main dex list.

我尝试将目标版本和buildtool版本从27更改为28仍然遇到相同的问题

build.gradle文件。

android {
    compileSdkVersion 28

    dexOptions {
        javaMaxHeapSize "4g"
    }
    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    lintOptions {
        disable 'InvalidPackage'
    }
    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        multiDexEnabled true
        applicationId "com.depl.toours.business"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.debug
        }
    }
}

main.dart文件。

  class MyDemoPage extends State<AccommodationPage> {
        @override
              void initState() {
                super.initState();
                propertyList = new List<String>();
                propertyList.add('Hotel');
                propertyList.add('Gust House');
                _getCurrentPosition();
              }

              _getCurrentPosition() async{
                GeolocationStatus status = await Geolocator().checkGeolocationPermissionStatus(locationPermission: GeolocationPermission.location);
                print('GPS: $status');
               Position position = await Geolocator().getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
               double lat = position.latitude;
               double lng = position.longitude;
               print('LatLng: ${lat} & ${lng}');
              }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: new AppBar(
        title: new Text('Accommodation'),
      ),
      body: _getBody(),
    );
  }

    }

我希望从geolocator: ^3.0.0包中获得当前位置的坐标，并且在multidexEnabled true（defaultConfig文件）中包含build.gradle。

Answer 1

我认为您要么需要使用

export enum EGenderFormats {
  SHORT_LOWER = "m/f",
  SHORT_UPPER = "M/F",
  FULL = "Male/Female"
}

type SGenderOptions = "m/f" | "M/F" | "Male/Female"

export interface IGenderOptions {
  format: EGenderFormats | SGenderOptions;
}

const DEFAULTS: IGenderOptions = {
  format: EGenderFormats.FULL
};

const OTHER_DEFAULTS: IGenderOptions = {
  format: "M/F"
};

在您的设置中缺少此

android {
    defaultConfig {
        ...
        minSdkVersion 21
        targetSdkVersion 28
        multiDexEnabled true
    }
    ...
}

或者如果您需要支持最小SDK <21

        minSdkVersion 21
        targetSdkVersion 28

在您的设置中缺少此

android {
    defaultConfig {
        ...
        minSdkVersion 15
        targetSdkVersion 28
        multiDexEnabled true
    }
    ...
}

dependencies {
  compile 'com.android.support:multidex:1.0.3'
}

有关更多详细信息，请参见https://developer.android.com/studio/build/multidex

地理位置错误：如果我添加pubspec.yaml文件，则无法建立^ 3.0.0，无法构建android应用

1 个答案: