// Judgment permissions
if (PackageManager.PERMISSION_GRANTED != ActivityCompat.checkSelfPermission(
                this,
                permission.CAMERA
            ) || PackageManager.PERMISSION_GRANTED != ActivityCompat.checkSelfPermission(
                this,
                permission.WRITE_EXTERNAL_STORAGE
            ) || PackageManager.PERMISSION_GRANTED != ActivityCompat.checkSelfPermission(
                this,
                permission.READ_EXTERNAL_STORAGE
            )
        ) {
 // Apply for acquisition permissions
            ActivityCompat.requestPermissions(
                this, arrayOf(permission.CAMERA,permission.WRITE_EXTERNAL_STORAGE,permission.READ_EXTERNAL_STORAGE), 10001
            )
        }else{
                         // Other operations after execution
        }

In addition to applying in Androidmanifest.xml in the Android permission application, the above method can be used where dynamic obtaining permissions can be used.

<USES-PERMISSION android: name = "Android.Permission.System_alert_window" /> <!
         <USES-PERMISSION android: name = "Android.Permission.access_Coarse_Location" /> <!-Used to access GPS positioning->
         <USES-PERMISSION android: name = "Android.Permission.access_fine_location" /> <!
         <USES-PERMISSION android: name = "Android.Permission.access_network_State" /> <!
         <USES-PERMISSION android: name = "Android.Permission.access_wifi_State" /> <!
         <USES-PERMISSION android: name = "Android.Permission.change_wifi_State" /> <!
         <USES-PERMISSION android: name = "Android.Permission.internet" /> <!-Used to read the current state of the mobile phone->
         <USES-PERMISSION android: name = "Android.permission.read_phone_State" /> <!
         <USES-PERMISSION android: name = "Android.Permission.write_extRNAL_STORAGE" /> <!
         <USES-PERMISSION android: name = "Android.Permission.Access_Location_Extra_commands" /> <!