[英]Flutter: Add location permission on IOS in permission handler
我的 flutter 項目有一個 web 視圖。 在 web 視圖小部件中,我正在使用權限處理程序檢查位置權限,如下所示:
void _checkLocationPermission() async {
if (await Permission.location.request().isGranted) {
Position position = await getCurrentPosition(desiredAccuracy: LocationAccuracy.high);
if (position == null) {
latitude = "";
longitude = "";
} else {
latitude = position.latitude.toString();
longitude = position.longitude.toString();
}
setState(() {
isPermission = true;
});
}
}
在 Info.plist 中,我添加了這些權限:
<key>NSLocationAlwaysUsageDescription</key>
<string>Needed to access location</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Needed to access location</string>
這是播客文件:
# Uncomment this line to define a global platform for your project
# platform :ios, '9.0'
# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'
project 'Runner', {
'Debug' => :debug,
'Profile' => :release,
'Release' => :release,
}
def flutter_root
generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
unless File.exist?(generated_xcode_build_settings_path)
raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
end
File.foreach(generated_xcode_build_settings_path) do |line|
matches = line.match(/FLUTTER_ROOT\=(.*)/)
return matches[1].strip if matches
end
raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end
require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
flutter_ios_podfile_setup
target 'Runner' do
use_frameworks!
use_modular_headers!
flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end
#post_install do |installer|
# installer.pods_project.targets.each do |target|
# flutter_additional_ios_build_settings(target)
# end
#end
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
'PERMISSION_LOCATION=0',
## dart: PermissionGroup.notification
'PERMISSION_NOTIFICATIONS=0'
]
end
end
end
我評論了默認安裝后:
#post_install do |installer|
# installer.pods_project.targets.each do |target|
# flutter_additional_ios_build_settings(target)
# end
#end
根據權限處理程序的建議,我在此文件的末尾添加了這些行:
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
'PERMISSION_LOCATION=0',
## dart: PermissionGroup.notification
'PERMISSION_NOTIFICATIONS=0'
]
end
end
end
但是當我在我的 iphone 7 plus 上運行時,當我打開我的 web 查看權限請求對話框時,未顯示並且我沒有位置權限!
podfile 是正確的? 因為這是我第一次在 podfile 中添加內容!!!
您不需要權限處理程序,此功能可通過Location plugin
他們的官方
下載並導入插件
添加權限
iOS 要在 iOS 中使用它,您必須在 Info.plist 中添加此權限:
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription
有關更多信息,請查看官方插件
初始化變量
String latitude_data;
String longitude_data;
bool _serviceEnabled;
當前位置功能
Future _getLocation() async {
Location location = new Location();
var _permissionGranted = await location.hasPermission();
_serviceEnabled = await location.serviceEnabled();
if (_permissionGranted != PermissionStatus.granted || !_serviceEnabled) {
///asks permission and enable location dialogs
_permissionGranted = await location.requestPermission();
_serviceEnabled = await location.requestService();
} else {
///Do something here
}
LocationData _currentPosition = await location.getLocation();
longitude_data=_currentPosition.longitude.toString();
latitude_data=_currentPosition.latitude.toString();
///if you want you can save data to sharedPrefrence
SharedPrefrence().setLatitude(_currentPosition.latitude.toString());
SharedPrefrence().setLongitude(_currentPosition.longitude.toString());
}
然后從手機上卸載應用程序,運行 flutter clean 並再次運行
實際上,您向后添加了 Podfile 中的值。 您需要為它們分配“1”才能允許它們。 現在你實際上已經拒絕了他們: 'PERMISSION_LOCATION=1', 'PERMISSION_NOTIFICATIONS=1'
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