ActivityIndicator

API Reference: UI.ActivityIndicator

Activity Indicator is a control that can be used to display progress of a task or a process.

TypeScript code blocks include examples of how to implement, override and components within the theme. You can create page with the UI Editor to make your page compatible with theming and then you can implement themable components programmatically. Once the page is created with the UI Editor, it generates a class under scripts/generated/pages. You can then extend that class with the following TypeScript classes.

TypeScript
JavaScript
TypeScript
import PageSampleDesign from 'generated/pages/pageSample';
import FlexLayout = require('sf-core/ui/flexlayout');
import ActivityIndicator = require('sf-core/ui/activityindicator');
import Application = require('sf-core/application');
import System = require("sf-core/device/system");
export default class ActivityIndicatorSample extends PageSampleDesign {
myActivityIndicator: ActivityIndicator;
constructor() {
super();
// Overrides super.onShow method
this.onShow = onShow.bind(this, this.onShow.bind(this));
// Overrides super.onLoad method
this.onLoad = onLoad.bind(this, this.onLoad.bind(this));
this.layout.flexDirection = FlexLayout.FlexDirection.ROW;
this.layout.justifyContent = FlexLayout.JustifyContent.CENTER;
this.layout.alignItems = FlexLayout.AlignItems.CENTER;
}
}
/**
* @event onShow
* This event is called when a page appears on the screen (everytime).
* @param {function} superOnShow super onShow function
* @param {Object} parameters passed from Router.go function
*/
function onShow(superOnShow: () => void) {
const { headerBar } = System.OS === "Android" ? this : this.parentController;
superOnShow();
Application.statusBar.visible = false;
headerBar.visible = false;
}
/**
* @event onLoad
* This event is called once when page is created.
* @param {function} superOnLoad super onLoad function
*/
function onLoad(superOnLoad: () => void) {
superOnLoad();
this.myActivityIndicator = new ActivityIndicator();
//@ts-ignore
this.myActivityIndicator.ios.activityIndicatorViewStyle = ActivityIndicator.iOS.ActivityIndicatorViewStyle.LARGE;
this.layout.addChild(this.myActivityIndicator, "myActivityIndicator", ".sf-activityIndicator", {
color: "#00A1F1"
});
}
JavaScript
const Page = require("sf-core/ui/page");
const extend = require("js-base/core/extend");
const Color = require('sf-core/ui/color');
const FlexLayout = require('sf-core/ui/flexlayout');
const ActivityIndicator = require('sf-core/ui/activityindicator');
var Page1 = extend(Page)(
function(_super) {
_super(this, {
onShow: function(params) {
Application.statusBar.visible = false;
this.headerBar.visible = false; //For Android
}
});
this.layout.flexDirection = FlexLayout.FlexDirection.ROW;
this.layout.justifyContent = FlexLayout.JustifyContent.CENTER;
this.layout.alignItems = FlexLayout.AlignItems.CENTER;
var myActivityIndicator = new ActivityIndicator({
color: Color.create("#00A1F1"),
});
myActivityIndicator.ios.activityIndicatorViewStyle = ActivityIndicator.iOS.ActivityIndicatorViewStyle.LARGE;
this.layout.addChild(myActivityIndicator);
}
);
module.exports = Page1;

Important (iOS):

If user uses Activity Indicator in any ListView's cell object, it's animation can stop when cell become invisible after scrolling. User needs reload activity indicator object each "onRowBind" callback of ListView.