無法在顫振上請求位置許可

Question

我正在使用google_maps_flutter和geolocator在 flutter 中創建一個測試應用程序來跟蹤手機的位置。 問題是，當我請求位置權限時，沒有顯示對話框。

我已經嘗試了其他 2 個包， simple_permissions和permission ，這給了我gradle 錯誤，現在我正在嘗試使用permission_handler ，但在清單中找不到權限

我如何嘗試請求許可

await PermissionHandler().requestPermission([PermissionGroup.locationAlways]);

我的 android/app/src/main/AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.geolocation">

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <application ...
</manifest>

我的 android/app/build.gradle

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.geolocalization"
        minSdkVersion 23
        targetSdkVersion 28
        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
        }
    }
}

flutter {
    source '../..'
}

dependencies {
    compile 'com.google.android.gms:play-services-maps:16.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.1.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.1.1'
}

我的控制台提示什么

D/permissions_handler(20397): No permissions found in manifest for: $permission
I/flutter (20397): decodePermissionRequestResult called with: value:[{4: 4}]

Answer 1

在flutter中使用以下包獲取位置權限：位置權限包

首先將包添加到 pubspec.yaml 文件中 (sdk:flutter) 行之后：

位置權限：^2.0.5

第二：在 main.dart 文件的開頭添加以下幾行：

import 'package:location_permissions/location_permissions.dart';

PermissionStatus permission = await LocationPermissions().requestPermissions();