fix(select): set disabled state from FormControl

src/components/select/select.ts

@@ -487,6 +487,13 @@ export class Select extends Ion implements AfterContentInit, ControlValueAccesso
    */
   onTouched() { }
 
+  /**
+   * @private
+   */
+  setDisabledState(isDisabled: boolean) {
+    this.disabled = isDisabled;
+  }
+
   /**
    * @private
    */

src/components/select/test/single-value/app-module.ts

@@ -1,4 +1,5 @@
 import { Component, NgModule } from '@angular/core';
+import { FormControl, FormGroup } from '@angular/forms';
 import { IonicApp, IonicModule } from '../../../..';
 
 export interface Currency {
@@ -55,6 +56,11 @@ export class E2EPage {
   ];
   currency: Currency;
 
+  fruitCtrl = new FormControl({value: 'grape', disabled: true});
+  fruitsForm = new FormGroup({
+    'fruit': this.fruitCtrl
+  });
+
   constructor() {
     this.currency = this.currencies[0];
   }

src/components/select/test/single-value/main.html

@@ -125,4 +125,16 @@
     <br>
   </p>
 
+  <form [formGroup]="fruitsForm">
+    <ion-item>
+      <ion-label>formControlName, disabled</ion-label>
+      <ion-select formControlName="fruit">
+        <ion-option>Grape</ion-option>
+        <ion-option>Cherry</ion-option>
+        <ion-option>Strawberry</ion-option>
+        <ion-option>Mango</ion-option>
+      </ion-select>
+    </ion-item>
+  </form>
+
 </ion-content>