Translate views strings programmatically in Drupal 8
In Drupal 8 views translation can be added from back end using views ui. You just need to enable the "Configuration Translation" module.
Then visit the views lists page, you will see a "Translate view" link for each views in links dropdown. Click on the link and you will see a page like this.
Image removed.
you will see separate section for header / footer / fields / filters / sorts translations. You can edit the labels in your selected language for any section.
But, Sometimes you need to install translation programmatically when installing the module in hook_install. so, without managing *.po file you can add translation by adding following lines of code.
<?php
$view_translate = \Drupal::languageManager()->getLanguageConfigOverride('ar', 'views.view.stores_finder');
$view_translate->set('display.page_1.display_options.fields.field_name.label', 'اسم الحقل');
$view_translate->set('display.page_2.display_options.filters.field_name.label', 'اسم الحقل');
$view_translate->set('display.block_1.display_options.fields.field_name.label', 'اسم الحقل');
$view_translate->save();