CODE EXAMPLE FOR JAVA

display pop up window overlay permission in redmi android studio

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (!Settings.canDrawOverlays(this)) {
                if ("xiaomi".equals(Build.MANUFACTURER.toLowerCase(Locale.ROOT))) {
                    final Intent intent =new Intent("miui.intent.action.APP_PERM_EDITOR");
                    intent.setClassName("com.miui.securitycenter",
                            "com.miui.permcenter.permissions.PermissionsEditorActivity");
                    intent.putExtra("extra_pkgname", getPackageName());
                    new AlertDialog.Builder(this)
                            .setTitle("Please Enable the additional permissions")
                            .setMessage("You will not receive notifications while the app is in background if you disable these permissions")
                            .setPositiveButton("Go to Settings", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    startActivity(intent);
                                }
                            })
                            .setIcon(android.R.drawable.ic_dialog_info)
                            .setCancelable(false)
                            .show();
                }else {
                    Intent overlaySettings = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
                    startActivityForResult(overlaySettings, OVERLAY_REQUEST_CODE);
                }
            }
        }