Hi Mansuri,

The image icon should be saved in this format 'acquirername_icon.png'

The payment methods in odoo e-commerce is listed by using this methode in the corresponding template

        <li t-foreach="acquirers or []" t-as="acquirer">

            <label t-if="acquirer.button">

                <input t-att-value="acquirer.id" type="radio" name="acquirer" t-att-checked="acquirers[0] == acquirer"/>

                <img class="media-object" style="width: 60px; display: inline-block;"

                    t-att-title="acquirer.name"

                    t-att-src="'/payment_%s/static/src/img/%s_icon.png' % (acquirer.provider, acquirer.provider)"/>

                <span t-field="acquirer.name"/>

            </label>

        </li>

I hope it will help.

Hi Lince,
At the time of installation of module 'payment_demo ' some datas are to be set in payment.acquirer as

<openerp>
        <data noupdate="1">
                <record id="payment_acquirer_sagepay" model="payment.acquirer">
                        <field name="name">Demo</field>
            <field name="provider">demo</field>
                        <field name="company_id" ref="base.main_company"/>
             <field name="view_template_id" ref="demo_acquirer_button"/>
                        <field name="environment">test</field>
                </record>
        </data>
</openerp>

Here you may need to create tempate demo_acquirer_button.

 Note: Look here the provider is 'demo'. You also have to inherit payment.acquirer and follow the code:

class PaymentAcquirer(models.Model): 
    _inherit = 'payment.acquirer' 
    def _get_providers(self, cr, uid, context=None): 
        providers = super(PaymentAcquirer, self)._get_providers(cr, uid, context=context)
        providers.append(['demo', 'demo']) 
        return providers

just place a icon as the name of acquire name in static/src/img.

For example if you want to change the image of payment_transfer;

place a  .png image  inside payment_transfer/static/src/img/ having name transfer_icon

For example if you want to change the image of payment_paypal;

place a  .png image  inside payment_paypal/static/src/img/ having name paypal_icon