小编And*_*ñoz的帖子

当我创建方法输出错误“ContextCompat 在当前上下文中不存在”和“PackageManager 不包含定义 PERMISSION_GRANTED”.. 知道我是否应该添加任何特殊指令。谢谢

方法

private void CheckSMSStatePermission()\n{\n\nint PermissionCheck = ContextCompat.CheckSelfPermission(this, Manifest.Permission.SendSms);\nif (PermissionCheck != PackageManager.PERMISSION_GRANTED)\n{\n    Toast.MakeText(Activity,  "No se tiene permiso para enviar SMS.", ToastLength.Short).Show();\n    ActivityCompat.requestPermissions(this, new String[] { Manifest.Permission.SendSms }, 1);\n}\nelse\n{\n    Toast.MakeText(Activity, "Se tiene permiso para enviar SMS!", ToastLength.Short).Show();\n}\n}\n

错误1

   Severity Code Description Project Project category Path File Line Column \n   Category Source Status deleted Tool\n   Error CS1503 Argument 1: can not be converted from                      \n \'LoginSystem.Authorization\' to \'Android.Content.Context\' LoginSystem 1 C: \\ \n  Users …