source stringlengths 14 113 | code stringlengths 10 21.3k |
|---|---|
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Info {
public info: MyMap<number, string>;
constructor(info: MyMap<number, string>) {
this.info = info;
}
}
@Observed
export class MyMap<K, V> extends Map<K, V> {
public name: string;
constructor(name?: string, args?: [K, V][]) {
super(args);
this.name = name ? name : "My Map";... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Info {
public info: MySet<number>;
constructor(info: MySet<number>) {
this.info = info;
}
}
@Observed
export class MySet<T> extends Set<T> {
public name: string;
constructor(name?: string, args?: T[]) {
super(args);
this.name = name ? name : "My Set";
}
getName() {
ret... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Source {
public source: number;
constructor(source: number) {
this.source = source;
}
}
@Observed
class Data {
public data: number;
constructor(data: number) {
this.data = data;
}
}
@Entry
@Component
struct Parent {
@State count: Source | Data | undefined = new Source(10);
b... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Info {
public info: number = 0;
constructor(info: number) {
this.info = info;
}
}
@Component
struct ObjectLinkChild {
@ObjectLink testNum: Info;
build() {
Text(`ObjectLinkChild testNum ${this.testNum.info}`)
.onClick(() => {
// The @ObjectLink decorated variable cannot... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Info {
public info: number = 0;
constructor(info: number) {
this.info = info;
}
}
@Component
struct ObjectLinkChild {
@ObjectLink testNum: Info;
build() {
Text(`ObjectLinkChild testNum ${this.testNum.info}`)
.onClick(() => {
// You can assign values to the properties o... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | class Parent {
parentId: number;
constructor(parentId: number) {
this.parentId = parentId;
}
getParentId(): number {
return this.parentId;
}
setParentId(parentId: number): void {
this.parentId = parentId;
}
}
class Child {
childId: number;
constructor(childId: number) {
this.child... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | class Parent {
parentId: number;
constructor(parentId: number) {
this.parentId = parentId;
}
getParentId(): number {
return this.parentId;
}
setParentId(parentId: number): void {
this.parentId = parentId;
}
}
@Observed
class Child {
childId: number;
constructor(childId: number) {
... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | let nextId = 1;
@Observed
class SubCounter {
counter: number;
constructor(c: number) {
this.counter = c;
}
}
@Observed
class ParentCounter {
id: number;
counter: number;
subCounter: SubCounter;
incrCounter() {
this.counter++;
}
incrSubCounter(c: number) {
this.subCounter.counter += c;
}
... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | CounterComp({ value: this.counter[0] }); // ParentComp passes ParentCounter to CounterComp.
@ObjectLink value: ParentCounter; // @ObjectLink receives ParentCounter.
// CounterChild is a child component of CounterComp. CounterComp passes this.value.subCounter to the CounterChild component.
CounterChild({ subValue: this... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | let nextId = 1;
@Observed
class SubCounter {
counter: number;
constructor(c: number) {
this.counter = c;
}
}
@Observed
class ParentCounter {
id: number;
counter: number;
subCounter: SubCounter;
incrCounter() {
this.counter++;
}
incrSubCounter(c: number) {
this.subCounter.counter += c;... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | let nextId = 1;
@Observed
class SubCounter {
counter: number;
constructor(c: number) {
this.counter = c;
}
}
@Observed
class ParentCounter {
id: number;
counter: number;
subCounter: SubCounter;
incrCounter() {
this.counter++;
}
incrSubCounter(c: number) {
this.subCounter.counter += c;... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Component
struct CounterComp {
@Prop value: ParentCounter = new ParentCounter(0);
@Prop subValue: SubCounter = new SubCounter(0);
build() {
Column({ space: 10 }) {
Text(`this.subValue.counter: ${this.subValue.counter}`)
.fontSize(20)
.onClick(() => {
this.subValue.counter += 7... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | let nextId = 1;
@Observed
class SubCounter {
counter: number;
constructor(c: number) {
this.counter = c;
}
}
@Observed
class ParentCounter {
id: number;
counter: number;
subCounter: SubCounter;
incrCounter() {
this.counter++;
}
incrSubCounter(c: number) {
this.subCounter.counter += c;
... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class RenderClass {
waitToRender: boolean = false;
constructor() {
setTimeout(() => {
this.waitToRender = true;
console.log("Change the value of waitToRender to" + this.waitToRender);
}, 1000)
}
}
@Entry
@Component
struct Index {
@State @Watch('renderClassChange') renderClass: Re... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class RenderClass {
waitToRender: boolean = false;
constructor() {
}
}
@Entry
@Component
struct Index {
@State @Watch('renderClassChange') renderClass: RenderClass = new RenderClass();
renderClassChange() {
console.log("The value of renderClass is changed to" + this.renderClass.waitToRender);... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Person {
name: string = '';
age: number = 0;
constructor(name: string, age: number) {
this.name = name;
this.age = age;
}
}
@Observed
class Info {
person: Person;
constructor(person: Person) {
this.person = person;
}
}
@Entry
@Component
struct Parent {
@State @Watch('onCh... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | Child({
per: this.info.person, clickEvent: () => {
console.log(':::clickEvent before', this.info.person.name); // 1
this.info.person.name = 'Jack';
console.log(':::clickEvent after', this.info.person.name); // 3
}
}) |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Weather {
temperature:number;
constructor(temperature:number) {
this.temperature = temperature;
}
static increaseTemperature(weather:Weather) {
weather.temperature++;
}
}
class Day {
weather:Weather;
week:string;
constructor(weather:Weather, week:string) {
this.weather = w... |
application-dev\ui\state-management\arkts-observed-and-objectlink.md | @Observed
class Weather {
temperature:number;
constructor(temperature:number) {
this.temperature = temperature;
}
static increaseTemperature(weather:Weather) {
weather.temperature++;
}
}
class Day {
weather:Weather;
week:string;
constructor(weather:Weather, week:string) {
this.weather = w... |
application-dev\ui\state-management\arkts-page-custom-components-lifecycle.md | // Index.ets
import { router } from '@kit.ArkUI';
@Entry
@Component
struct MyComponent {
@State showChild: boolean = true;
@State btnColor: string = "#FF007DFF";
// Only components decorated by @Entry can call the lifecycle callbacks of a page.
onPageShow() {
console.info('Index onPageShow');
}
// On... |
application-dev\ui\state-management\arkts-page-custom-components-lifecycle.md | // Page.ets
@Entry
@Component
struct Page {
@State textColor: Color = Color.Black;
@State num: number = 0;
// Only components decorated by @Entry can call the lifecycle callbacks of a page.
onPageShow() {
this.num = 5;
}
// Only components decorated by @Entry can call the lifecycle callbacks of a page... |
application-dev\ui\state-management\arkts-page-custom-components-lifecycle.md | // Index.ets
import { uiObserver, router, UIObserver } from '@kit.ArkUI';
@Entry
@Component
struct Index {
listener: (info: uiObserver.RouterPageInfo) => void = (info: uiObserver.RouterPageInfo) => {
let routerInfo: uiObserver.RouterPageInfo | undefined = this.queryRouterPageInfo();
if (info.pageId == router... |
application-dev\ui\state-management\arkts-persiststorage.md | // EntryAbility.ets
onWindowStageCreate(windowStage: window.WindowStage): void {
windowStage.loadContent('pages/Index', (err) => {
if (err.code) {
return;
}
PersistentStorage.persistProp('aProp', 47);
});
} |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp('aProp', 47); |
application-dev\ui\state-management\arkts-persiststorage.md | AppStorage.get<number>('aProp'); // returns 47 |
application-dev\ui\state-management\arkts-persiststorage.md | @StorageLink('aProp') aProp: number = 48; |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp('aProp', 47);
@Entry
@Component
struct Index {
@State message: string = 'Hello World';
@StorageLink('aProp') aProp: number = 48;
build() {
Row() {
Column() {
Text(this.message)
// The current result is saved when the application exits. After the restart, t... |
application-dev\ui\state-management\arkts-persiststorage.md | let aProp = AppStorage.setOrCreate('aProp', 47);
PersistentStorage.persistProp('aProp', 48); |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp('aProp', 48);
if (AppStorage.get('aProp') > 50) {
// If the value stored in PersistentStorage exceeds 50, set the value to 47.
AppStorage.setOrCreate('aProp',47);
} |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp("P", undefined);
@Entry
@Component
struct TestCase6 {
@StorageLink("P") p: number | undefined | null = 10;
build() {
Row() {
Column() {
Text(this.p + "")
.fontSize(50)
.fontWeight(FontWeight.Bold)
Button("changeToNumber").onClick(() => {
... |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp("persistedDate", new Date());
@Entry
@Component
struct PersistedDate {
@StorageLink("persistedDate") persistedDate: Date = new Date();
updateDate() {
this.persistedDate = new Date();
}
build() {
List() {
ListItem() {
Column() {
Text(`Persisted Dat... |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp("persistedMapString", new Map<number, string>([]));
@Entry
@Component
struct PersistedMap {
@StorageLink("persistedMapString") persistedMapString: Map<number, string> = new Map<number, string>([]);
persistMapString() {
this.persistedMapString = new Map<number, string>([[3, "one"]... |
application-dev\ui\state-management\arkts-persiststorage.md | PersistentStorage.persistProp("persistedSet", new Set<number>([]));
@Entry
@Component
struct PersistedSet {
@StorageLink("persistedSet") persistedSet: Set<number> = new Set<number>([]);
persistSet() {
this.persistedSet = new Set<number>([33, 1, 3]);
}
clearSet() {
this.persistedSet.clear();
}
bu... |
application-dev\ui\state-management\arkts-prop.md | // Simple type
@Prop count: number;
// The value change can be observed.
this.count = 1;
// Complex type
@Prop title: Model;
// The value change can be observed.
this.title = new Model('Hi'); |
application-dev\ui\state-management\arkts-prop.md | class Info {
public value: string;
constructor(value: string) {
this.value = value;
}
}
class Model {
public value: string;
public info: Info;
constructor(value: string, info: Info) {
this.value = value;
this.info = info;
}
}
@Prop title: Model;
// The value changes at the first layer can be ... |
application-dev\ui\state-management\arkts-prop.md | // Assume that the object decorated by @State is an array.
@Prop title: string[];
// The value change of the array itself can be observed.
this.title = ['1'];
// The value change of array items can be observed.
this.title[0] = '2';
// The deletion of array items can be observed.
this.title.pop();
// The addition of arr... |
application-dev\ui\state-management\arkts-prop.md | @Component
struct DateComponent {
@Prop selectedDate: Date = new Date('');
build() {
Column() {
Button('child update the new date')
.margin(10)
.onClick(() => {
this.selectedDate = new Date('2023-09-09');
})
Button(`child increase the year by 1`).onClick(() => {
... |
application-dev\ui\state-management\arkts-prop.md | @Component
struct CountDownComponent {
@Prop count: number = 0;
costOfOneAttempt: number = 1;
build() {
Column() {
if (this.count > 0) {
Text(`You have ${this.count} Nuggets left`)
} else {
Text('Game over!')
}
// Changes to the @Prop decorated variables are not synchr... |
application-dev\ui\state-management\arkts-prop.md | @Component
struct Child {
@Prop value: number = 0;
build() {
Text(`${this.value}`)
.fontSize(50)
.onClick(() => {
this.value++;
})
}
}
@Entry
@Component
struct Index {
@State arr: number[] = [1, 2, 3];
build() {
Row() {
Column() {
Child({ value: this.arr[0] }... |
application-dev\ui\state-management\arkts-prop.md | class Book {
public title: string;
public pages: number;
public readIt: boolean = false;
constructor(title: string, pages: number) {
this.title = title;
this.pages = pages;
}
}
@Component
struct ReaderComp {
@Prop book: Book = new Book("", 0);
build() {
Row() {
Text(this.book.title)
... |
application-dev\ui\state-management\arkts-prop.md | let nextId: number = 1;
// @Observed
class Book {
public id: number;
public title: string;
public pages: number;
public readIt: boolean = false;
constructor(title: string, pages: number) {
this.id = nextId++;
this.title = title;
this.pages = pages;
}
}
@Component
struct ReaderComp {
@Prop b... |
application-dev\ui\state-management\arkts-prop.md | @Observed
class Book {
public id: number;
public title: string;
public pages: number;
public readIt: boolean = false;
constructor(title: string, pages: number) {
this.id = nextId++;
this.title = title;
this.pages = pages;
}
} |
application-dev\ui\state-management\arkts-prop.md | @Component
struct MyComponent {
@Prop customCounter: number;
@Prop customCounter2: number = 5;
build() {
Column() {
Row() {
Text(`From Main: ${this.customCounter}`).fontColor('#ff6b6565').margin({ left: -110, top: 12 })
}
Row() {
Button('Click to change locally !')
... |
application-dev\ui\state-management\arkts-prop.md | // The following is the data structure of a nested class object.
@Observed
class Son {
public title: string;
constructor(title: string) {
this.title = title;
}
}
@Observed
class Father {
public name: string;
public son: Son;
constructor(name: string, son: Son) {
this.name = name;
this.son = s... |
application-dev\ui\state-management\arkts-prop.md | @Entry
@Component
struct Person {
@State person: Father = new Father('Hello', new Son('world'));
build() {
Column() {
Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center }) {
Button('change Father name')
.width(312)
.height(40)
.margin(12)
... |
application-dev\ui\state-management\arkts-prop.md | @Component
struct Child {
@Prop value: Map<number, string> = new Map([[0, "a"], [1, "b"], [3, "c"]]);
build() {
Column() {
ForEach(Array.from(this.value.entries()), (item: [number, string]) => {
Text(`${item[0]}`).fontSize(30)
Text(`${item[1]}`).fontSize(30)
Divider()
})
... |
application-dev\ui\state-management\arkts-prop.md | @Component
struct Child {
@Prop message: Set<number> = new Set([0, 1, 2, 3, 4]);
build() {
Column() {
ForEach(Array.from(this.message.entries()), (item: [number, string]) => {
Text(`${item[0]}`).fontSize(30)
Divider()
})
Button('init set').onClick(() => {
this.message ... |
application-dev\ui\state-management\arkts-prop.md | class Animals {
public name: string;
constructor(name: string) {
this.name = name;
}
}
@Component
struct Child {
@Prop animal: Animals | undefined;
build() {
Column() {
Text(`Child's animal is ${this.animal instanceof Animals ? this.animal.name : 'undefined'}`).fontSize(30)
Button('Ch... |
application-dev\ui\state-management\arkts-prop.md | @Observed
class Commodity {
public price: number = 0;
constructor(price: number) {
this.price = price;
}
}
@Component
struct PropChild {
@Prop fruit: Commodity; // The state variable is not initialized locally.
build() {
Text(`PropChild fruit ${this.fruit.price}`)
.onClick(() => {
thi... |
application-dev\ui\state-management\arkts-prop.md | @Observed
class Commodity {
public price: number = 0;
constructor(price: number) {
this.price = price;
}
}
@Component
struct PropChild1 {
@Prop fruit: Commodity; // The state variable is not initialized locally.
build() {
Text(`PropChild1 fruit ${this.fruit.price}`)
.onClick(() => {
t... |
application-dev\ui\state-management\arkts-prop.md | class Score {
value: number;
constructor(value: number) {
this.value = value;
}
static changeScore1(param1:Score) {
param1.value += 1;
}
}
@Entry
@Component
struct Parent {
@State score: Score = new Score(1);
build() {
Column({space:8}) {
Text(`The value in Parent is ${this.score.valu... |
application-dev\ui\state-management\arkts-prop.md | class Score {
value: number;
constructor(value: number) {
this.value = value;
}
static changeScore1(score:Score) {
score.value += 1;
}
}
@Entry
@Component
struct Parent {
@State score: Score = new Score(1);
build() {
Column({space:8}) {
Text(`The value in Parent is ${this.score.value}... |
application-dev\ui\state-management\arkts-provide-and-consume.md | // Binding through the same variable name
@Provide age: number = 0;
@Consume age: number;
// Binding through the same variable alias
@Provide('a') id: number = 0;
@Consume('a') age: number; |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume selectedDate: Date;
build() {
Column() {
Button(`child increase the day by 1`)
.onClick(() => {
this.selectedDate.setDate(this.selectedDate.getDate() + 1)
})
Button('child update the new date')
.margin(10)
.onClick(() => {... |
application-dev\ui\state-management\arkts-provide-and-consume.md | // Incorrect format. An error is reported during compilation.
let change: number = 10;
@Provide(change) message: string = 'Hello';
// Correct format.
let change: string = 'change';
@Provide(change) message: string = 'Hello'; |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume msg: string;
// Incorrect format. Local initialization is not allowed.
@Consume msg1: string = 'Hello';
build() {
Text(this.msg)
}
}
@Entry
@Component
struct Parent {
@Provide message: string = 'Hello';
build() {
Column() {
... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume num: number;
build() {
Column() {
Text(`Value of num: ${this.num}`)
}
}
}
@Entry
@Component
struct Parent {
@Provide num: number = 10;
build() {
Column() {
Text(`Value of num: ${this.num}`)
Child()
}
... |
application-dev\ui\state-management\arkts-provide-and-consume.md | // Incorrect format. "a" is defined repeatedly.
@Provide('a') count: number = 10;
@Provide('a') num: number = 10;
// Correct format.
@Provide('a') count: number = 10;
@Provide('b') num: number = 10; |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume num: number;
build() {
Column() {
Text(`Value of num: ${this.num}`)
}
}
}
@Entry
@Component
struct Parent {
// Incorrect format. @Provide is missing.
num: number = 10;
build() {
Column() {
Text(`Value of num: ${thi... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume num: number;
build() {
Column() {
Text(`Value of num: ${this.num}`)
}
}
}
@Entry
@Component
struct Parent {
// Correct format.
@Provide num: number = 10;
build() {
Column() {
Text(`Value of num: ${this.num}`)
... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct ToDoItem {
// The @Consume decorated variable is bound to the @Provide decorated variable in its ancestor component ToDo under the same attribute name.
@Consume count: number;
build() {
Column() {
Text(`count(${this.count})`)
Button(`count(${this.count}), count + 1`)
.on... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume message: Map<number, string>
build() {
Column() {
ForEach(Array.from(this.message.entries()), (item: [number, string]) => {
Text(`${item[0]}`).fontSize(30)
Text(`${item[1]}`).fontSize(30)
Divider()
})
Button('Consume init map').onClic... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
@Consume message: Set<number>
build() {
Column() {
ForEach(Array.from(this.message.entries()), (item: [number, string]) => {
Text(`${item[0]}`).fontSize(30)
Divider()
})
Button('Consume init set').onClick(() => {
this.message = new Set([0, 1, ... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct Child {
// The @Consume decorated variable is bound to the @Provide decorated variable in its ancestor component Ancestors under the same attribute name.
@Consume count: string | undefined;
build() {
Column() {
Text(`count(${this.count})`)
Button(`count(${this.count}), Child`)
... |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct MyComponent {
@Provide({allowOverride : "reviewVotes"}) reviewVotes: number = 10;
} |
application-dev\ui\state-management\arkts-provide-and-consume.md | @Component
struct GrandSon {
// The @Consume decorated variable is bound to the @Provide decorated variable in its ancestor component under the same attribute name.
@Consume("reviewVotes") reviewVotes: number;
build() {
Column() {
Text(`reviewVotes(${this.reviewVotes})`) // The Text component displays ... |
application-dev\ui\state-management\arkts-provide-and-consume.md | class Tmp {
a: string = ''
}
@Entry
@Component
struct HomePage {
@Builder
builder2($$: Tmp) {
Text(`${$$.a}test`)
}
build() {
Column() {
CustomWidget() {
CustomWidgetChild({ builder: this.builder2 })
}
}
}
}
@Component
struct CustomWidget {
@Provide('a') a: string = 'abc... |
application-dev\ui\state-management\arkts-provide-and-consume.md | class Tmp {
name: string = ''
}
@Entry
@Component
struct HomePage {
@Provide('name') name: string = 'abc';
@Builder
builder2($$: Tmp) {
Text (`${$$.name}test`)
}
build() {
Column() {
Button('Hello').onClick(() => {
if (this.name == 'ddd') {
this.name = 'abc';
} els... |
application-dev\ui\state-management\arkts-provide-and-consume.md | class Animal {
name:string;
type:string;
age: number;
constructor(name:string, type:string, age:number) {
this.name = name;
this.type = type;
this.age = age;
}
static changeName(animal:Animal) {
animal.name = 'Jack';
}
static changeAge(animal:Animal) {
animal.age += 1;
}
}
@Entr... |
application-dev\ui\state-management\arkts-provide-and-consume.md | class Animal {
name:string;
type:string;
age: number;
constructor(name:string, type:string, age:number) {
this.name = name;
this.type = type;
this.age = age;
}
static changeName(animal:Animal) {
animal.name = 'Jack';
}
static changeAge(animal:Animal) {
animal.age += 1;
}
}
@Entr... |
application-dev\ui\state-management\arkts-rendering-control-contentslot.md | abstract class Content {
} |
application-dev\ui\state-management\arkts-rendering-control-contentslot.md | import { nativeNode } from'libNativeNode.so' // The so. file implemented by you.
import { NodeContent } from '@kit.ArkUI'
@Entry
@Component
struct Parent {
private nodeContent: Content = new NodeContent();
aboutToAppear() {
// Create a node through the C API and add it to the nodeContent manager.
... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct Parent {
@State simpleList: Array<string> = ['one', 'two', 'three'];
build() {
Row() {
Column() {
ForEach(this.simpleList, (item: string) => {
ChildItem({ item: item })
}, (item: string) => item)
}
.width('100%')
.height('100%')
}
... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct Parent {
@State simpleList: Array<string> = ['one', 'two', 'two', 'three'];
build() {
Row() {
Column() {
ForEach(this.simpleList, (item: string) => {
ChildItem({ item: item })
}, (item: string) => item)
}
.width('100%')
.he... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct Parent {
@State simpleList: Array<string> = ['one', 'two', 'three'];
build() {
Row() {
Column() {
Text('Change Value of Third Array Item')
.fontSize(24)
.fontColor(Color.Red)
.onClick(() => {
this.simpleList[2] = 'new three';
... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct ArticleList {
@State simpleList: Array<number> = [1, 2, 3, 4, 5];
build() {
Column() {
ForEach(this.simpleList, (item: number) => {
ArticleSkeletonView()
.margin({ top: 20 })
}, (item: number) => item.toString())
}
.padding(20)
.width('100%')
... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | class Article {
id: string;
title: string;
brief: string;
constructor(id: string, title: string, brief: string) {
this.id = id;
this.title = title;
this.brief = brief;
}
}
@Entry
@Component
struct ArticleListView {
@State isListReachEnd: boolean = false;
@State articleList: Array<Article> = ... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Observed
class Article {
id: string;
title: string;
brief: string;
isLiked: boolean;
likesCount: number;
constructor(id: string, title: string, brief: string, isLiked: boolean, likesCount: number) {
this.id = id;
this.title = title;
this.brief = brief;
this.isLiked = isLiked;
this.like... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct ForEachSort {
@State arr: Array<string> = [];
build() {
Row() {
List() {
ForEach(this.arr, (item: string) => {
ListItem() {
Text(item.toString())
.fontSize(16)
.textAlign(TextAlign.Center)
.size({height: 100,... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct Parent {
@State simpleList: Array<string> = ['one', 'two', 'three'];
build() {
Column() {
Button() {
Text('Insert Item After First Item').fontSize(30)
}
.onClick(() => {
this.simpleList.splice(1, 0, 'new item');
})
ForEach(this.simpleList,... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Entry
@Component
struct Parent {
@State simpleList: Array<string> = ['one', 'two', 'three'];
build() {
Column() {
Button() {
Text('Insert Item After First Item').fontSize(30)
}
.onClick(() => {
this.simpleList.splice(1, 0, 'new item');
console.info(`[onClick]: simpleL... |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | ForEach(this.simpleList, (item: string) => {
ChildItem({ item: item })
}, (item: string) => item) // Ensure that the key is unique. |
application-dev\ui\state-management\arkts-rendering-control-foreach.md | @Observed
class Article {
id: string;
title: string;
brief: string;
isLiked: boolean;
likesCount: number;
constructor(id: string, title: string, brief: string, isLiked: boolean, likesCount: number) {
this.id = id;
this.title = title;
this.brief = brief;
this.isLiked = isLiked;
this.like... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | @Entry
@Component
struct MyComponent {
@State count: number = 0;
build() {
Column() {
Text(`count=${this.count}`)
if (this.count > 0) {
Text(`count is positive`)
.fontColor(Color.Green)
}
Button('increase count')
.onClick(() => {
this.count++;
... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | @Component
struct CounterView {
@State counter: number = 0;
label: string = 'unknown';
build() {
Column({ space: 20 }) {
Text(`${this.label}`)
Button(`counter ${this.counter} +1`)
.onClick(() => {
this.counter += 1;
})
}
.margin(10)
.padding(10)
.border({... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | @Component
struct CounterView {
@Link counter: number;
label: string = 'unknown';
build() {
Column({ space: 20 }) {
Text(`${this.label}`)
.fontSize(20)
Button(`counter ${this.counter} +1`)
.onClick(() => {
this.counter += 1;
})
}
.margin(10)
.padding(... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | @Entry
@Component
struct MyComponent {
@State toggle: boolean = false;
@State toggleColor: boolean = false;
build() {
Column({ space: 20 }) {
Text('Before')
.fontSize(15)
if (this.toggle) {
Text('Top True, positive 1 top')
.backgroundColor('#aaffaa').fontSize(20)
... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | class MyData {
str: string;
constructor(str: string) {
this.str = str;
}
}
@Entry
@Component
struct Index {
@State data1: MyData|undefined = new MyData("branch 0");
@State data2: MyData|undefined = new MyData("branch 1");
build() {
Column() {
if (this.data1) {
// If a Text is added or... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | class MyData {
str: string;
constructor(str: string) {
this.str = str;
}
}
@Entry
@Component
struct Index {
@State data1: MyData|undefined = new MyData("branch 0");
@State data2: MyData|undefined = new MyData("branch 1");
build() {
Column() {
if (this.data1) {
// If a Text is added or... |
application-dev\ui\state-management\arkts-rendering-control-ifelse.md | class MyData {
str: string;
constructor(str: string) {
this.str = str;
}
}
@Entry
@Component
struct Index {
@State data1: MyData|undefined = new MyData("branch 0");
@State data2: MyData|undefined = new MyData("branch 1");
build() {
Column() {
if (this.data1) {
// Display the specified... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | /** For details about the BasicDataSource code of the string array, see the sample code at the end of this topic. **/
class MyDataSource extends BasicDataSource {
private dataArray: string[] = [];
public totalCount(): number {
return this.dataArray.length;
}
public getData(index: number): string {
re... |
application-dev\ui\state-management\arkts-rendering-control-lazyforeach.md | // Array before modification.
["Hello a","Hello b","Hello c","Hello d","Hello e","Hello f","Hello g","Hello h","Hello i","Hello j","Hello k","Hello l","Hello m","Hello n","Hello o","Hello p","Hello q","Hello r"]
//Array after modification.
["Hello a","Hello c","Hello d","Hello b","Hello g","Hello f","Hello e","Hello h"... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.