Nativescript inner StackLayout - nativescript

Hello everyone I'm trying to make inner StackLayouts but the second one comes to top of first one so that I can't see the second StackLayout should I handle with css if it is how or is there an other way
Here is my code
<StackLayout orientation="horizontal">
<StackLayout width="500">
<GridLayout columns="50, *" rows="*" width="500" height="50"
verticalAlignment="top">
<Label text="Name" row="0" col="0" backgroundColor="red">
</Label>
<Label text="Fol" row="0" col="1" class="alignRight"
backgroundColor="blue"></Label>
</GridLayout>
</StackLayout>
<StackLayout orientation="horizontal" width="500" height="180">
<Image src="http://lorempixel.com/400/200" width="500" left="10"
top="30">
</Image>
</StackLayout>
</StackLayout>
Thank you

At first I would delete the widths to see how the page is displayed. 500 is a very big value. Only large tablets can support that.
As an example at first I would try this :
<GridLayout columns="auto, auto">
<GridLayout col="0" columns="50, *" rows="*" verticalAlignment="top">
<Label text="Name" row="0" col="0" backgroundColor="red">
</Label>
<Label text="Fol" row="0" col="1" class="alignRight"
backgroundColor="blue"></Label>
</GridLayout>
<Image col="1" src="http://lorempixel.com/400/200" left="10" op="30">
</Image>
</GridLayout>
After you see the two parts align horizontally you can start tweaking the widths

Related

how to set gridlayout from js from a string of layout defined

I'm trying to set a grid layout as below in xml
layout: `<GridLayout row="0" rows="*, 2*, *">
<GridLayout width="57%" row="0" horizontalAlignment="center" verticalAlignment="center">
<Label class="lobster-regular carousel-item-head" text="Welcome to Payments App" textWrap="true"></Label>
</GridLayout>
<GridLayout class="carousel-item-circle" row="1" horizontalAlignment="center" verticalAlignment="center">
<Label class="fa carousel-item-icon" text="" textWrap="true"></Label>
</GridLayout>
<GridLayout width="49%" row="2" horizontalAlignment="center" verticalAlignment="center">
<Label class="opensans-regular carousel-item-desc" text="Let's see a quick overview of our features." textWrap="true"></Label>
</GridLayout>
</GridLayout>
`,
so i created a scroll view from js and tried to add content to it as below. but its giving stackerror.
also i found that https://play.nativescript.org/?template=play-js&id=sRSad7&v=162 here they implemented same thing. but difficult to understand.
but when i tried the similar thing i'm not able to do so, here is my project link. https://play.nativescript.org/?template=play-js&id=GbN2TT
const myScroll = new ScrollView();
myScroll.orientation = "vertical";
console.log(homeViewModel.layout);
myScroll.content = homeViewModel.layout;
please give me in detail suggestion and answer or alternative to achieve this.
Use UI Builder
const layout = `<GridLayout row="0" rows="*, 2*, *">
<GridLayout width="57%" row="0" horizontalAlignment="center" verticalAlignment="center">
<Label class="lobster-regular carousel-item-head" text="Welcome to Payments App" textWrap="true"></Label>
</GridLayout>
<GridLayout class="carousel-item-circle" row="1" horizontalAlignment="center" verticalAlignment="center">
<Label class="fa carousel-item-icon" text="" textWrap="true"></Label>
</GridLayout>
<GridLayout width="49%" row="2" horizontalAlignment="center" verticalAlignment="center">
<Label class="opensans-regular carousel-item-desc" text="Let's see a quick overview of our features." textWrap="true"></Label>
</GridLayout>
</GridLayout>
`;
const builder = require("tns-core-modules/ui/builder");
const gridLayout = builder.parse(layout);
myScroll.content = gridLayout;

How to fix android ui performance

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" />
...
...

Nativescript Ios Vertical align

Faced an unpleasant problem
help me please
When trying to align to the bottom of the page, the IOS unit does not completely go down
iosOverflowSafeArea did not help
<GridLayout columns="*,*" rows="*" row="1" col="0" class="project-type-content" width="100%" [iosOverflowSafeArea]="true">
<StackLayout width="100%" row="0" [col]="i" *ngFor="let item of projectTypes; let i=index" class="debug" verticalalignment="bottom" [iosOverflowSafeArea]="true">
<StackLayout width="75%" (tap)="onProjectTypeChoose(item.urlPrefix)" class="debug" [iosOverflowSafeArea]="true">
<GridLayout columns="*" rows="auto, auto" height="auto">
<StackLayout class="btn-type-choose" col="0" row="0">
<ns-rounded-button fontColor="#fff" borderColor="#fff" color="#fff" [text]="item.title" [bg]="item.bg"
width="100%"></ns-rounded-button>
</StackLayout>
<StackLayout width="100%" col="0" row="1" class="project-type-item">
<Label [text]="item.subTitle" width="100%" class="project-type-item-title monserrat regular"></Label>
<!--<Image [src]="item.image" stretch="aspectFill" class="project-type-item-image"></Image>-->
<HtmlView [html]="item.description" width="100%"></HtmlView>
<Image src="~/assets/images/firstScreenShadow.png" width="100%" horizontalAlignment="center"></Image>
<Label text="What`s New:" class="whats-new-title monserrat semi-bold"></Label>
<Label *ngIf="item.updateText && item.updateText[0]" [text]="item.updateText[0]" class="project-type-item-wats monserrat regular"></Label>
<Label *ngIf="item.updateText && item.updateText[1]" [text]="item.updateText[1]" class="project-type-item-wats monserrat regular"></Label>
<StackLayout width="100%" class="tap-to-choose" height="20">
<Button text="Tap to choose" class="tap-to-choose-btn" width="60%"></Button>
</StackLayout>
</StackLayout>
</GridLayout>
</StackLayout>
</StackLayout>
</GridLayout>
http://prntscr.com/mww4y3

nativescript data has to be displayed grid view with 4*4

For displaying the grid view (4*4) in nativescript with Angular, I have integrated the npm "nativescript-grid-view" as per the example in npm site. But, It fails for me. I got the error whenever I enter that page in the application.
Error :
System.err: Error: Expecting a valid View instance.
System.err: File: "file:///data/data/com.domain.project/files/app/tns_modules/tns-core-modules/ui/core/view-base/view-base.js, line: 337, column: 12
Code .ts file
<GridLayout class="page">
<GridView [items]="order" colWidth="30%" rowHeight="100">
<ng-template let-item="item" let-odd="odd">
<StackLayout margin="10" [nsRouterLink]="['/item', item.id]" borderColor="blue" borderWidth="2" borderRadius="5" verticalAlignment="stretch" class="list-group-item" [class.odd]="odd">
<Label verticalAlignment="center" [text]="item.productName" class="list-group-item-text" textWrap="true"></Label>
</StackLayout>
</ng-template>
</GridView>
</GridLayout>
module.ts
import { GridViewModule } from 'nativescript-grid-view/angular';
imports: [
NativeScriptModule,
NativeScriptHttpModule,
NativeScriptUIDataFormModule,
NativeScriptUIListViewModule,
GridViewModule,
TranslateModule.forRoot({
loader: {
provide: TranslateLoader,
useFactory: (createTranslateLoader),
deps: [Http]
}
}),
...SHARED_MODULES
],....
Package.json
"tns-android": {
"version": "3.0.1"
},
"tns-ios": {
"version": "3.4.1"
}
.....
"typescript": "~2.2.0",....
Somebody has asked the question is below forum, but no one has replied.
https://discourse.nativescript.org/t/dynamic-gridlayout-from-array-angular/1675
Or you could use nativescript-ui-listview and its ListViewGridLayout with spanCount property. The official documentation for this functionality is here. Basically, you could do the following:
<RadListView [items]="dataItems">
<ng-template tkListItemTemplate let-item="item">
<!-- item template here -->
</ng-template>
<ListViewGridLayout tkListViewLayout spanCount="4" scrollDirection="Vertical" ios:itemHeight="200" ></ListViewGridLayout>
</RadListView>
NativeScript 4X4 GridLayout
I have written some code in the nativescript playground link.
**
https://play.nativescript.org/?template=play-ng&id=a8UEDd
**
<GridLayout rows="*,*,*,*" columns="*,*,*,*">
<Label text="1" row="0" col="0" borderColor="black" borderWidth="1"></Label>
<Label text="2" row="0" col="1" borderColor="black" borderWidth="1"></Label>
<Label text="3" row="0" col="2" borderColor="black" borderWidth="1"></Label>
<Label text="4" row="0" col="3" borderColor="black" borderWidth="1"></Label>
<Label text="5" row="1" col="0" borderColor="black" borderWidth="1"></Label>
<Label text="6" row="1" col="1" borderColor="black" borderWidth="1"></Label>
<Label text="7" row="1" col="2" borderColor="black" borderWidth="1"></Label>
<Label text="8" row="1" col="3" borderColor="black" borderWidth="1"></Label>
<Label text="9" row="2" col="0" borderColor="black" borderWidth="1"></Label>
<Label text="10" row="2" col="1" borderColor="black" borderWidth="1"></Label>
<Label text="11" row="2" col="2" borderColor="black" borderWidth="1"></Label>
<Label text="12" row="2" col="3" borderColor="black" borderWidth="1"></Label>
<Label text="13" row="3" col="0" borderColor="black" borderWidth="1"></Label>
<Label text="14" row="3" col="1" borderColor="black" borderWidth="1"></Label>
<Label text="15" row="3" col="2" borderColor="black" borderWidth="1"></Label>
<Label text="16" row="3" col="3" borderColor="black" borderWidth="1"></Label>
</GridLayout>
Preview of the 4x4 GridLayout will be like this
Below code does work without using nativeoscript-grid-view. I think that nativescript version is the problem.
<ScrollView class="plansScroll" #plansScroll orientation="vertical" horizontalAlignment="center" width="100%">
<WrapLayout orientation="horizontal" [id]="myIndex" (tap)="onPlanSectionTap($event)" class="plansScrollGrid m-5" #plansScrollGrid>
<StackLayout *ngFor='let item of order; let myIndex = index' width="25%">
<!-- <Image [src]="item.imagePath" width="80"></Image> -->
<Image width="80" [src]="'~/assets/img/bratShop-overlay.jpg'"></Image>
<Label [text]='item.productName' textWrap="true" horizontalAlignment="center" verticalAlignment="center" #plansScrollGridType></Label>
<Label [text]='item.orderNumber' textWrap="true" horizontalAlignment="center" verticalAlignment="center" #plansScrollGridType></Label>
<Label [text]='item.orderStatus' textWrap="true" horizontalAlignment="center" verticalAlignment="center" #plansScrollGridType></Label>
<Label [text]='item.orderDate' textWrap="true" horizontalAlignment="center" verticalAlignment="center" #plansScrollGridType></Label>
</StackLayout>
</WrapLayout>

center image in nativescript

After I try NativeScript tutorial "Grocery", I found out that its button quite hard to tap it's because tap area is too small, so I want to increase Image hight by update layout file to the following below. However, image not seem to be in the center (Image Below).
How can I achieve this in NativeScript ?
list.html
<ActionBar title="Groceries">
<ActionItem text="Share" (tap)="share()"
android.systemIcon="ic_menu_share_holo_dark"
ios.systemIcon="9" ios.position="right"></ActionItem>
</ActionBar>
<GridLayout rows="auto, *">
<GridLayout row="0" columns="*, auto" class="add-bar">
<TextField #groceryTextField [(ngModel)]="grocery" hint="Enter a grocery item" col="0"></TextField>
<StackLayout class="delete-container" height="100%" (tap)="add()" col="1" >
<Image src="res://add" stretch="none" horizontalAlignment="center"></Image>
</StackLayout>
</GridLayout>
<ListView [items]="groceryList" row="1" class="small-spacing" [class.visible]="listLoaded">
<ng-template let-item="item">
<GridLayout columns="*, auto">
<Label col="0" [text]="item.name" class="medium-spacing"></Label>
<StackLayout col="1" class="delete-container" height="100%" (tap)="delete(item)">
<Image src="res://delete"></Image>
</StackLayout>
</GridLayout>
</ng-template>
</ListView>
<ActivityIndicator
[busy]="isLoading" [visibility]="isLoading ? 'visible' : 'collapse'"
row="1" horizontalAlignment="center" verticalAlignment="center"></ActivityIndicator>
</GridLayout>
You should check out NS's FlexBox layout.
It is quite useful:
http://docs.nativescript.org/cookbook/ui/layouts/flexbox-layout

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