title: How to get selected only single checkbox from multiple checkboxes using ionic 2 and angular2
body: <p>Presently working on ionic2 and angular2 
  I am having fields of 7 checkboxes. I need to select only one particular checkbox the remaining checkboxes should be disabled.Similarly, I need to get for remaining 6 checkboxes also. How can I do that, 
  Here is the code I have used in my HTML</p>
  
  <p>// payment.HTML</p>
  
  <pre><code>&lt;ion-card class="ion-card"&gt;
          &lt;ion-item&gt;
              &lt;ion-label&gt;Cash On Delivery&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="true" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;PayuMoney Wallet&lt;/ion-label&gt;
              &lt;ion-checkbox item-right  checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;Pay with Paytm Wallet&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;Credit/ Debit Card&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;Net Banking&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;PayZapp&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
          &lt;ion-item no-lines&gt;
              &lt;ion-label&gt;Pay using MobiKwiK Wallet&lt;/ion-label&gt;
              &lt;ion-checkbox item-right checked="false" [(ngModel)]="checked"&gt;&lt;/ion-checkbox&gt;
          &lt;/ion-item&gt;
  
      &lt;/ion-card&gt;
  </code></pre>