Flutter 权限申请

这篇文章是基于permission_handler 10.2.0版本写的

前言

在App开发过程中我们经常要用到各种权限，我是用的是permission_handler包来实现权限控制的。

pub地址：https://pub.dev/packages/permission_handler

permission_handler 权限列表

配置

Android

1.在项目根目录/android/gradle.properties文件中添加如下内容

android.useAndroidX=true
android.enableJetifier=true

2.在项目根目录/android/app/build.gradle文件中添加如下内容

android {
  compileSdkVersion 33
  ...
}

我是修改了flutter_tool的配置，到Flutter的安装环境目录/flutter/packages/flutter_tools/gradle/flutter.gradle

3.在项目根目录/android/app/src/main/AndroidManifest.xml中添加所需权限即可。

ios

1.在项目根目录/ios/Profile文件中添加如下内容

post_install do |installer|
  installer.pods_project.targets.each do |target|
    ... # Here are some configurations automatically generated by flutter
   
    # Start of the permission_handler configuration
    target.build_configurations.each do |config|
    
      # You can enable the permissions needed here. For example to enable camera
      # permission, just remove the `#` character in front so it looks like this:
      #
      # ## dart: PermissionGroup.camera
      # 'PERMISSION_CAMERA=1'
      #
      #  Preprocessor definitions can be found in: https://github.com/Baseflow/flutter-permission-handler/blob/master/permission_handler_apple/ios/Classes/PermissionHandlerEnums.h
      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
        '$(inherited)',
   
        ## dart: PermissionGroup.calendar
        # 'PERMISSION_EVENTS=1',
   
        ## dart: PermissionGroup.reminders
        # 'PERMISSION_REMINDERS=1',
   
        ## dart: PermissionGroup.contacts
        # 'PERMISSION_CONTACTS=1',
   
        ## dart: PermissionGroup.camera
        # 'PERMISSION_CAMERA=1',
   
        ## dart: PermissionGroup.microphone
        # 'PERMISSION_MICROPHONE=1',
   
        ## dart: PermissionGroup.speech
        # 'PERMISSION_SPEECH_RECOGNIZER=1',
   
        ## dart: PermissionGroup.photos
        # 'PERMISSION_PHOTOS=1',
   
        ## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
        # 'PERMISSION_LOCATION=1',
           
        ## dart: PermissionGroup.notification
        # 'PERMISSION_NOTIFICATIONS=1',
   
        ## dart: PermissionGroup.mediaLibrary
        # 'PERMISSION_MEDIA_LIBRARY=1',
   
        ## dart: PermissionGroup.sensors
        # 'PERMISSION_SENSORS=1',  
            
        ## dart: PermissionGroup.bluetooth
        # 'PERMISSION_BLUETOOTH=1',
    
        ## dart: PermissionGroup.appTrackingTransparency
        # 'PERMISSION_APP_TRACKING_TRANSPARENCY=1',
    
        ## dart: PermissionGroup.criticalAlerts
        # 'PERMISSION_CRITICAL_ALERTS=1'
      ]
   
    end
    # End of the permission_handler configuration
  end
end

2.用到哪个权限取消对应的注释即可，例如

## dart: PermissionGroup.calendar
        'PERMISSION_EVENTS=1',

3.在Info.plist添加对应的权限以及含义即可

使用方式

获取权限是否状态

var status = await Permission.phone.status;

同时请求多个权限

Map<Permission, PermissionStatus> statuses = await [
      Permission.location,
      Permission.storage,
      Permission.camera,
    ].request();
    print(statuses[Permission.location]);

单个权限申请

Future<bool> requestCalendarPermission() async {
    //获取当前的权限状态
    var status = await Permission.phone.status;
    if (status == PermissionStatus.granted) {
//已经授权
      return true;
    } else {
      //未授权则发起一次申请
      status = await Permission.phone.request();
      if (status == PermissionStatus.granted) {
        return true;
      } else {
        return false;
      }
    }
  }
}