Magento 2 : Problem while adding custom button order view page?

Question

di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 <type name="Magento\Backend\Block\Widget\Context">
 <plugin name="add_custom_button_sales_veiw" type="MyModule\RK\Plugin\Widget\Context" sortOrder="1"/>
 </type>
</config>

Context.php

<?php
namespace MyModule\RK\Plugin\Widget;
class Context
{
 public function afterGetButtonList(
 \Magento\Backend\Block\Widget\Context $subject,
 $buttonList
 )
 {
 if($subject->getRequest()->getFullActionName() == 'sales_order_view'){
 $buttonList->add(
 'custom_button',
 [
 'label' => 'test',
 'onclick' => "setLocation('window.location.href')",
 'class' => 'ship'
 ]
 );
 }
 return $buttonList;
 }
}

Review button is not displaying on order view page what i am doing wrong ??

• Sohel Rana: Whats your di.xml location?
• Ramkishan Suthar: vendor/modulename/etc/adminhtml/di.xml

Answer 1

Change your di.xml [Vendor/Module/etc/adminhtml/di.xml]:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 <type name="Magento\Backend\Block\Widget\Context">
 <plugin name="add_custom_button_sales_veiw" type="Vendor\Module\Plugin\Widget\Context" sortOrder="1"/>
 </type>
</config>

Create plugin [Vendor/Module/Plugin/Widget/Context.php]

namespace Vedor\Module\Plugin\Widget;
class Context
{
 public function afterGetButtonList(
 \Magento\Backend\Block\Widget\Context $subject,
 $buttonList
 )
 {
 if($subject->getRequest()->getFullActionName() == 'sales_order_view'){
 $buttonList->add(
 'custom_button',
 [
 'label' => __('Custom Button'),
 'onclick' => "setLocation('window.location.href')",
 'class' => 'ship'
 ]
 );
 }
 return $buttonList;
 }
}

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Read here for more detail

• Ramkishan Suthar: its not working yet ? I think function is not calling because i try to print hello in this function but nothing is printing. May be problem in my di.xml. Please suggest me
• Sohel Rana: Check updated answer.
• Ramkishan Suthar: yes i am doing exactly same but not working ...
• Sohel Rana: Which version you have tried? Make sure your module active.
• Ramkishan Suthar: 2.1.0 and my module is active