ion-header-scroll-opacity

Now compatible with Ionic 4 🎉.

Change header background opacity on content scroll.

install

npm i ion-header-scroll-opacity --save

If you are using Ionic 3 install ion-header-scroll-opacity@^1.0.0 and use to the ion-header-scroll-opacit#ionic-3 branch for reference.

Import directive

Import the IonHeaderScrollOpacityModule into the your page module

import { IonHeaderScrollOpacityModule } from "ion-header-scroll-opacity";
@NgModule({
  [...]
  imports: [IonHeaderScrollOpacityModule],
  [...]
})
export class HomePageModule {}

Usage

Put the header-scroll-opacity directive on the ion-header element.

Directive Input

Input	Description	Default value
ionContentRef	`ion-content` reference	none
scrollAmount	Amount of pixel to be scrolled in order end the opacity transition	88
isTransparent	If true the header background starts with opacity=0	true

<ion-header scrollOpacity [ionContentRef]="mycontent">
  <ion-toolbar color="primary">
    <ion-title>
      Do scroll
    </ion-title>
  </ion-toolbar>
</ion-header>
<ion-content #mycontent [scrollEvents]="true">
  ...long scrolling content...
</ion-content>

Remember to set [scrollEvents]="true" on the ion-content component otherwise the directive will not work.

Tip

Add the fullscreen attribute to the ion-content element and add some css style to make a good effect

.scroll-content {
  padding-top: 0px !important;
}

Demo

Contribute

Any pull-request and issues are wellcome