C# 我有这个错误;当前上下文中不存在ContextCompat“;及;PackageManager不包含“授予的定义”权限;
当我创建方法输出错误“ContextCompat在当前上下文中不存在”和“PackageManager不包含授予的定义权限”时。。知道我是否应该添加任何特殊指令。多谢各位 方法C# 我有这个错误;当前上下文中不存在ContextCompat“;及;PackageManager不包含“授予的定义”权限;,c#,android,xamarin,runtime-permissions,C#,Android,Xamarin,Runtime Permissions,当我创建方法输出错误“ContextCompat在当前上下文中不存在”和“PackageManager不包含授予的定义权限”时。。知道我是否应该添加任何特殊指令。多谢各位 方法 private void CheckSMSStatePermission() { int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.Permission.SendSms); if (PermissionCheck != Pack
private void CheckSMSStatePermission()
{
int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.Permission.SendSms);
if (PermissionCheck != PackageManager.PERMISSION_GRANTED)
{
Toast.MakeText(Activity, "No se tiene permiso para enviar SMS.", ToastLength.Short).Show();
ActivityCompat.requestPermissions(this, new String[] { Manifest.Permission.SendSms }, 1);
}
else
{
Toast.MakeText(Activity, "Se tiene permiso para enviar SMS!", ToastLength.Short).Show();
}
}
错误1
Severity Code Description Project Project category Path File Line Column
Category Source Status deleted Tool
Error CS1503 Argument 1: can not be converted from
'LoginSystem.Authorization' to 'Android.Content.Context' LoginSystem 1 C: \
Users \ Lenovo \ documents \ visual studio 2017 \ Projects \ LoginSystem \
Documents \ visual studio 2017 \ Projects \ LoginSystem \ LoginSystem \
Authorization.cs 229 70 Active Compiler IntelliSense Compiler
错误2
Severity Code Description Project Project category Path File Line Column
Category Source Status deleted Tool
CS0117 'PackageManager' no contiene una definición para
'PERMISSION_GRANTED' LoginSystem 1 C:\Users\Lenovo\documents\visual
studio 2017\Projects\LoginSystem\LoginSystem
C:\Users\Lenovo\documents\visual studio
2017\Projects\LoginSystem\LoginSystem\Autorizacion.cs 230 51 Compiler
IntelliSense Activo Compilador
改变这个
int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.Permission.SendSms);
对此
int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.permission.SEND_SMS;);
或者试试这个
String permission = android.Manifest.permission.SEND_SMS;
if (ActivityCompat.checkSelfPermission(SearchCityClass.this, permission)
!= PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(SearchCityClass.this, new String[]
{permission}, 1);
}
在清单文件中添加此权限
<uses-permission android:name="android.permission.SEND_SMS"/>
更改此选项
int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.Permission.SendSms);
对此
int PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.permission.SEND_SMS;);
或者试试这个
String permission = android.Manifest.permission.SEND_SMS;
if (ActivityCompat.checkSelfPermission(SearchCityClass.this, permission)
!= PackageManager.PERMISSION_GRANTED){
ActivityCompat.requestPermissions(SearchCityClass.this, new String[]
{permission}, 1);
}
在清单文件中添加此权限
<uses-permission android:name="android.permission.SEND_SMS"/>
如果您试图使用
ContextCompat.XXXX
您的活动子类需要来自AppCompatActivity
(而不是活动
…)
AppCompatActivity
在nuget软件包中提供:Xamarin.Android.Support.v4
:
<package id="Xamarin.Android.Support.v4" version="25.4.0.2" targetFramework="monoandroid71" />
如果您试图使用
ContextCompat.XXXX
您的活动子类需要来自AppCompatActivity
(而不是活动
),请添加该包并将您的活动更改为AppCompatActivity
AppCompatActivity
在nuget软件包中提供:Xamarin.Android.Support.v4
:
<package id="Xamarin.Android.Support.v4" version="25.4.0.2" targetFramework="monoandroid71" />
添加该包并将您的活动更改为AppCompatActivity
发布完整错误发布完整错误将此添加到清单文件嗨,我已经完成了您通知我的所有操作,但在实际操作中,此消息无法从“LoginSystem.Authorization”转换为“Android.Content.Contex”codigo String permission=Android.Manifest.permission.SendSms;如果(ContextCompat.CheckSelfPermission(this,Manifest.Permission.SendSms)!=Permission.grated){Android.Support.V4.App.ActivityCompat.RequestPermissions(this,新字符串[]{Permission},1);}是的,将此添加到清单文件hi,我已经完成了您通知我的所有操作,但在实际操作中,此消息无法从“LoginSystem.Authorization”转换为“Android.Content.Contex”codigo String permission=Android.Manifest.permission.SendSms;if(ContextCompat.CheckSelfPermission(this,Manifest.Permission.SendSms)!=Permission.grated){Android.Support.V4.App.ActivityCompat.RequestPermissions(this,新字符串[]{Permission},1);}