Android onRequestPermissionsResult方法，granResults方法变空

Question

我正在开发Android应用程序，我想在Calendar Android中编写活动。

我使用API​​ 26在Android模拟器中运行应用程序。

我正在调用ActivityCompat.requestPermissions方法但响应 grandResults 参数为空。 RequestCode参数是正确的。

这是我的代码。我正在调用此方法来请求权限：

public void PermisoEscribirCalendario()
    {
        if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.WRITE_CALENDAR)
                != PackageManager.PERMISSION_GRANTED) {

            // Should we show an explanation?
            if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                    Manifest.permission.WRITE_CALENDAR)) {

                // Show an expanation to the user *asynchronously* -- don't block
                // this thread waiting for the user's response! After the user
                // sees the explanation, try again to request the permission.

            } else {

                // No explanation needed, we can request the permission.

                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_CALENDAR}, 123);
                }

                ActivityCompat.requestPermissions(this,
                        new String[]{Manifest.permission.WRITE_CALENDAR},
                        1234);

                // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
                // app-defined int constant. The callback method gets the
                // result of the request.
            }
        }
    }

回调时的响应代码：

@Override
    public void onRequestPermissionsResult(int requestCode,
                                           String permissions[], int[] grantResults) {
        switch (requestCode) {
            case 1234: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0
                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    // permission was granted, yay! Do the
                    // contacts-related task you need to do.

                } else {

                    // permission denied, boo! Disable the
                    // functionality that depends on this permission.
                }
                return;
            }

            // other 'case' lines to check for other
            // permissions this app might request
        }
    }

我用图片显示，来回调时grandResult参数是如何为空：

我希望你能帮助我。

非常感谢你！