I'm developing some app made on nativescript. Recently, i see that my app is more like website not an app, beacuse of how navigation works.
I'm having bottom nav (atached - this grey with 5 icons) that is used to load proper views.
But when i click on home or any other icon, new view is loaded, but also nav is 'reloaded'. So it will not stay in place but load with new view. My question is - is possible oto have static botom bar ? I've tried 2 plugins found on marketplace, but without success. Thanks for and help.
<Page class="page" loaded="loaded" xmlns:header="components/header" xmlns:footer="components/footer">
<GridLayout rows="120,*,60">
<StackLayout row="0">
<!-- Common header -->
<header:header/>
</StackLayout>
<ScrollView row="1" verticalAlignment="top" class="scrollview" tap="{{ loadPage }}">
<StackLayout class="redeem">
<Label text="Enter your code below to redeem your reward" class="info" textWrap="true"></Label>
<Label text="Code" class="info code" textWrap="true"></Label>
<TextField />
<Button text="Redeem" class="button blue"></Button>
</StackLayout>
</ScrollView>
<StackLayout row="2">
<!-- Common footer -->
<footer:footer/>
</StackLayout>
</GridLayout>
</Page>
:
<AbsoluteLayout class="footer" loaded="menu" horizontalAlignment="center" xmlns:sd="nativescript-ui-sidedrawer">
<GridLayout rows="auto" columns="*,*,*,*,*" horizontalAlignment="center">
<Label row="0" col="0" class="fa" text="" tap="{{ mainPage }}"></Label>
<Label row="0" col="1" class="fa" text="" tap="{{ creditPage }}"></Label>
<Label row="0" col="2" class="fa" text="" tap="{{ seatPage }}"></Label>
<Label row="0" col="3" class="fa" text="" tap="{{ refs }}"></Label>
<Label id="openMenu" row="0" col="4" class="fa" text="" tap="toggleDrawer"></Label>
<!--<Label id="openMenu" row="0" col="4" class="fa" text="" tap="{{ loadPage }}"></Label>-->
</GridLayout>
</AbsoluteLayout>
You could use DockLayout and dock the content to the bottom (Angular example here)
Also in the upcoming release 4.0.0 of NativeScript (expected April-2018) will provide support for different root views (apart from Page) meaning you could create bottom static layout like GridLayout or even better a bottom TabView (also coming for Android in 4.0.0) and create Frame in the upper layout for your dynamic content. (Look here)
Related
I'm getting:
Avoid using ListView or ScrollView with no explicit height set inside StackLayout. Doing so might results in poor user interface performance and a poor user experience.
My UI performance is very crappy on Android. It seems pretty smooth on iOS. I'm trying to figure out what could be the issue. This one error crops up for me. I'm running "nativescript-angular": "^8.0.0",
<ScrollView [visibility]="isBusy ? 'collapsed' : 'visible'" #sv>
<GridLayout rows="auto,auto,auto,auto" id="t2" columns="*" class="template_body">
<GridLayout row="0" col="0" #wv1wrapper>
<!-- <web-view id="instruction-wv" #wv1></web-view> -->
<template-text [data]="lessonDetail.instruction" *ngIf="lessonDetail.instruction" [screenwidth]="screenWidth"></template-text>
</GridLayout>
<StackLayout row="1" col="0" class="main-img">
<Image [src]="(lesson$ | async)?.thumbUrl" #imgref [data-image]="(lesson$ | async)?.imageUrl" (tap)="modalImage($event);"></Image>
</StackLayout>
<GridLayout row="2" col="0" #wvwrapper>
<!-- <web-view id="wv" #wv></web-view> -->
<template-text [data]="lessonDetail.body_text" [version]="version" *ngIf="lessonDetail.body_text" [screenwidth]="screenWidth"></template-text>
</GridLayout>
</GridLayout>
This is a template that is pulled into a router-outlet that looks like this in the master template:
<FlexboxLayout class="contentbody" [visibility]="isBusy ? 'hidden' : 'visible'" [data-template]="template_id">
<Label [text]="error" *ngIf="error"></Label>
<router-outlet></router-outlet>
</FlexboxLayout>
Also on that page, I do have a listview inside of a stacklayout.
<StackLayout row="0" >
<StackLayout class="vocab-notes">
<Label *ngIf="vocabArray" class="h3 section-title" text="Vocabulary"></Label>
<ListView [items]="vocabArray" id="vocablistview" (itemTap)="onItemTap($event)" class="list-items">
<ng-template let-item="item" let-i="index" let-odd="odd" let-even="even">
<GridLayout columns="*" rows="auto,auto" [class.odd]="odd" [class.even]="even" class="vocab-list">
<FlexboxLayout col="0" row="0" class="vocab-list-item-layout">
<Label [text]='item.label' textWrap="true" [id]="item.id" class="h3 vocab-list-item" (tap)="showVocab($event)"></Label>
</FlexboxLayout>
</GridLayout>
</ng-template>
</ListView>
</StackLayout>
I know its late for you but if someone is looking for this in future, so if you are getting below in console on any page you load.
JS: Avoid using ListView or ScrollView with no explicit height set inside StackLayout. Doing so might results in poor user interface performance and a poor user experience.
You just need to give your scrollView a height, try different heights like in my case I need 650
<Page class="main" actionBarHidden="true">
<StackLayout class="gradient-bg">
<ScrollView orientation="vertical" height="650"> <!-- Here height is 650 -->
<StackLayout>
<GridLayout rows="50" class="page-header">
<Label
row="0"
class="fa label-back"
:text="'fa-arrow-left' | fonticon"
v-on:tap="navigateTo('app')"
/>
<Label text="Plot Suggestion" row="0" class="lbl-heading" horizontalAlignment="center" />
...
...
I'm using the TKListViewHeaderDirective of teleriks RadListView in nativescript like so:
<GridLayout columns="*" rows="*" tkToggleNavButton>
<RadListView *ngIf="!loading" row="3" col="0" [items]="nodes" ...>
<ng-template tkListItemTemplate let-node="item">
<!-- list item -->
</ng-template>
<ng-template tkListViewHeader>
<GridLayout columns="*" rows="auto, auto, auto">
<GridLayout row="0" col="0" columns="40,*,40">
<Button class="fa action-item" row="0" col="0" [text]="'fa-sort-amount-asc' | fonticon" ios.position="right" android="actionBar" style="background-color:#c9c9ce;;"></Button>
<SearchBar row="0" col="1" #searchInput hint="Search" (submit)="search(searchInput.text)" (clear)="search('')" (textChange)="search(searchInput.text)"></SearchBar>
<Button class="fa action-item" row="0" col="2" [text]="'fa-th' | fonticon" ios.position="right" android="actionBar" style="background-color:#c9c9ce;"></Button>
</GridLayout>
<StackLayout row="1" col="0">
<Label text="Hello world"></Label>
<Label [text]="currentNode.name"></Label>
<Label [text]="nodes?.length ? nodes.length : 0"></Label>
</StackLayout>
<StackLayout row="2" col="0" *ngIf="!nodes?.length" class="list-group">
<!-- some contents -->
</StackLayout>
<StackLayout row="3" col="0" *ngIf="currentNode?.name !== '/'" class="list-group">
<!-- some contents -->
</StackLayout>
</GridLayout>
</ng-template>
</RadListView>
</GridLayout>
it seems like two things go wrong here:
this seems to be missing here (the *ngIf should show one of the StackLayouts in specific cases but does not
The GridLayout (does not have any effect if I change it to StackLayout) inside the list header shows only one child element
According to the docs: http://docs.telerik.com/devtools/nativescript-ui/Controls/Angular/ListView/header-footer
There is an issue on github concerning this: https://github.com/telerik/nativescript-ui-feedback/issues/207
# I am using listview inside the Scrollview but listview is not scrollable inside the scrollview as top parent view
component.html
<ScrollView>
<StackLayout class="zindex">
<!--<AutoComplete [items]="ArrayVillage" (itemTap)="itemTapped($event)"> </AutoComplete>-->
<SearchBar row="0" #sb hint="Search for a country and press enter" (clear)="onClear()" [text]="searchPhrase" (submit)="onSubmit(sb.text)"></SearchBar>
<ListView row="1" [items]="myItems" class="list-group">
<template let-item="item">
<GridLayout class="item" class="list-group-item">
<Label [text]="item.name" class="list-group-item-heading"></Label>
</GridLayout>
</template>
</ListView>
</StackLayout>
<ScrollView>
Try Using Repeater instead of ListView as mentioned in https://docs.nativescript.org/cookbook/ui/repeater. Following is an example of how you can include Repeater inside a ScrollView and can obtain whole layout as scrollable.
<ScrollView>
<StackLayout class="margin">
<Label text="{{ description }}"></Label>
<Repeater items="{{ options }}" row="1">
<Repeater.itemTemplate>
<StackLayout>
<Label text="{{ description }}"></Label>
</StackLayout>
</Repeater.itemTemplate>
</Repeater>
</StackLayout>
</ScrollView>
Trying it by wrapping the scrollview into a AbsoluteLayout
<AbsoluteLayout>
<ScrollView>
<StackLayout class="zindex">
//Rest of stuff
</StackLayout>
<ScrollView>
</AbsoluteLayout>
Having a scrollview inside other one is not a good practice. It doesn't work beacuse scrollview tries to calculate the infinite view and do it with a scrollable inside could work just in some cases having control of the parent view, but don't go that painfull way.
In your code I have a question, why would you want to scroll the SearchBar? Try this structure I think is what you want.
<StackLayout>
<SearchBar></SearchBar>
<ListView>
<template>
<GridLayout >
<Label ></Label>
</GridLayout>
</template>
</ListView>
The SearchBar is fixed and the List scrolllable
Look at the video, play with the emulator and you will see that at the beggining it seems to work but is the "computer mouse scroll" when you use click trying to scroll it doesn't work anymore and is because the screen doesn't know which scrollable element has to scroll.
To do 2 scrollable parts can be a solution, as shown in the end of the video (I implemented in Nativescript with Javascript because I'm working in a project but is almost the same)
<StackLayout>
<Label fontSize="20" color="blue" text="You can do two scrollable parts" textWrap="true" />
<Button text="to" />
<ListView items="{{ items }}" height="300" loaded="onLoaded" itemLoading="onItemLoading" itemTap="onItemTap">
<ListView.itemTemplate>
<Label text="{{ name }}" textWrap="true" />
</ListView.itemTemplate>
</ListView>
<ScrollView>
<StackLayout>
<Button text="1" />
<Button text="2" />
<Button text="3" />
<Button text="4" />
<Button text="5" />
<Button text="6" />
<Button text="3" />
<Button text="4" />
<Button text="5" />
<Button text="6" />
</StackLayout>
</ScrollView>
</StackLayout>
We use NativeScript 2.3 with Angular2 final.
We have an issue with the ListView component. We can bind something to the view but it always display this:
Here's the code of the template:
`
<GridLayout row="0" columns="*, auto" class="add-bar">
<!--<TextField #groceryTextField [(ngModel)]="grocery" hint="Enter a grocery item" col="0"></TextField>-->
<!--<Image src="res://add" (tap)="add()" col="1"></Image>-->
</GridLayout>
<ListView [items]="orderForms" row="1" class="small-spacing" [class.visible]="listLoaded">
<template let-item="item">
<GridLayout columns="*, auto">
<Label col="0" [text]="item.frameworkContractNumber" class="medium-spacing"></Label>
<Label col="1" [text]="item.requestIdentifier" class="medium-spacing"></Label>
</GridLayout>
</template>
</ListView>
With the previous RC of angular it was working. Now whatever we try(array, observables, ...) we end up with this. It's the same on Android and IOS.
Any ideas?
I've got a TextView inside a GridLayout and have it set to take maximum available height. That works.
But If the user presses new-line to the bottom of the TextView and more - the TextView cursor goes off the bottom of the screen instead of scrolling the TextView.
How can I get the TextView to scroll.
In iOS the TextView should be scrollable by default if you set large text in it.
However for Android you could use ScrollView and to use StackLayout for main container inside it. For further help you could review the below attached example:
main-page.xml
<Page xmlns="http://schemas.nativescript.org/tns.xsd" navigatingTo="navigatingTo">
<GridLayout columns="*" rows="auto,*">
<GridLayout row="0" col="0" columns="auto,*" rows="auto">
<Label text="header" row="0" col="0" />
</GridLayout>
<GridLayout row="1" col="0" columns="auto,*" rows="auto">
<Label text="Note" row="0" col="0" />
<ScrollView orientation="vertical" row="1" col="0" height="300" width="300" backgroundColor="green">
<StackLayout orientation="vertical" class="scroll-menu" backgroundColor="red">
<TextView text="" hint="Enter text..." />
</StackLayout>
</ScrollView>
</GridLayout>
</GridLayout>
</Page>