I have an issue with ion-reorder, i have implemented long press to start reorder and i have an issue when scrolling. i want to ignore the long press while scrolling and only address long press when scrolling has stopped.
my long press code is:
import {
Directive,
Output,
EventEmitter,
HostBinding,
HostListener
} from '#angular/core';
#Directive({
selector: '[appLongPress]'
})
export class LongPressDirective {
pressing: boolean;
longPressing: boolean;
timeout: any;
// interval: number;
interval: NodeJS.Timeout;
#Output()
onLongPress = new EventEmitter();
#Output()
onLongPressing = new EventEmitter();
#HostBinding('class.press')
get press() { return this.pressing; }
#HostBinding('class.longpress')
get longPress() { return this.longPressing; }
#HostListener('touchstart', ['$event'])
#HostListener('mousedown', ['$event'])
onMouseDown(event) {
this.pressing = true;
this.longPressing = false;
this.timeout = setTimeout(() => {
this.longPressing = true;
this.onLongPress.emit(event);
this.interval = setInterval(() => {
this.onLongPressing.emit(event);
}, 50);
}, 1500);
}
#HostListener('touchend')
#HostListener('mouseup')
#HostListener('mouseleave')
endPress() {
clearTimeout(this.timeout);
clearInterval(this.interval);
this.longPressing = false;
this.pressing = false;
}
}
thanks..
Related
I am making like and dislike functionality in ionic app when user like then want to show heart icon and when user dislike then want to show empty heart icon.When like the post then icon show but when refreshing page then its show icon of empty likes.Please help me how to resolve this problem in ionic....
tab1.page.html
<div>
<img src="{{getImage.image}}" (click)="tapPhotoLike(getImage.id)" (click)="toggleIcon(getImage.id)">
</div>
<p no-margin no-padding>
<button clear ion-button icon-only class="like-btn">
<!-- <ion-icon no-padding name="like_btn.icon_name" color="{{ like_btn.color }}" class="icon-space"></ion-icon> -->
<ion-icon name="heart-empty" *ngIf="!iconToggle[getImage.id]" color="{{ like_btn.color }}"></ion-icon>
<ion-icon name="heart" *ngIf="iconToggle[getImage.id]" color="{{ like_btn.color }}"></ion-icon>
</button>
</p>
tab1.page.ts
import { Component, OnInit } from '#angular/core';
import { UserService } from '../user.service';
import { User } from '../user';
import { first } from 'rxjs/operators';
import { Storage } from '#ionic/storage';
import { ToastController } from '#ionic/angular';
import { LoadingController, NavController } from '#ionic/angular';
#Component({
selector: 'app-tab1',
templateUrl: 'tab1.page.html',
styleUrls: ['tab1.page.scss']
})
export class Tab1Page implements OnInit {
num
getImages: User[] = [];
getImages2: User[] = [];
getImages3 = [];
getcounts;
countLikes
counts
unlikes
likesID
iconToggle = [];
like_btn = {
color: 'danger',
icon_name: 'heart-empty'
};
public tap: number = 0;
public status: false;
constructor(private userService: UserService,
public toastController: ToastController,
private storage: Storage,
public navCtrl: NavController,
public loadingController: LoadingController) {
}
doRefresh(event) {
this.userPost();
setTimeout(() => {
event.target.complete();
}, 2000);
}
ngOnInit() {
this.userPost();
//this.getCountOfLikes();
}
async userPost() {
const loading = await this.loadingController.create({
message: 'Please wait...',
spinner: 'crescent',
duration: 2000
});
await loading.present();
this.userService.getUserPost().pipe(first()).subscribe(getImages => {
this.getImages3 = getImages;
loading.dismiss();
});
}
likeButton() {
const detail_id = this.userService.getCurrentIdpostId();
this.storage.get('userId').then((val) => {
if (val) {
let user_id = val
this.userService.userPostLikes(user_id, detail_id).pipe(first()).subscribe(
async data => {
this.iconToggle[this.num] = true;
if (data['status'] === 'you have already liked this post') {
const toast = await this.toastController.create({
message: 'you have already liked this post before.',
duration: 2000
});
toast.present();
}
this.userPost();
}
);
}
});
}
tapPhotoLike($detail_id, num) {
this.userService.setCurrentIdpostId($detail_id);
this.tap++;
setTimeout(() => {
if (this.tap == 1) {
this.tap = 0;
//this.unlikePost();
} if (this.tap > 1) {
this.tap = 0;
}
}, 250);
}
setIconToggles() {
let x = 0;
this.getImages3.forEach(() => {
this.iconToggle[x] = false;
x++;
});
}
toggleIcon(num) {
if (this.iconToggle[num]) {
this.iconToggle[num] = false;
this.unlikePost();
} else {
this.iconToggle[num] = true;
this.likeButton();
}
}
ionViewWillEnter() {
this.userPost();
}
unlikePost() {
let detail_id = this.userService.getCurrentIdpostId();
this.storage.get('userId').then((val) => {
if (val) {
let user_id = val;
this.userService.unLikes(user_id, detail_id).subscribe(async dislikes => {
this.unlikes = dislikes;
this.iconToggle[this.num] = false;
this.userPost();
})
}
});
}
}
How manage icon , i am inserting status on like and dislike in database..In this code how to manage status please help me.
I have an interesting problem with IONIC-3 that I've not been able to solve. I am attempting to implement an auth routing which is triggered by ionViewCanEnter. However, while I can pass one nav setter, it will not allow multiple. Here is the code:
AuthService Function:
isAuthenticated(nav: NavController): boolean | Promise<any> {
const userAuth = this.uData.getAuthenticated;
const userProfile = this.uData.getUserProfile;
if (userAuth ) {
//User is logged in, so let's check a few things.
if (!userProfile.sign_up_complete) {
//User has not completed sign up
setTimeout(() => { nav.setRoot(CreateAccountPage) }, 0);
}
return true
} else {
//User is not authenticated, return to walkthrough
setTimeout(() => { nav.setRoot(WalkthroughPage) }, 0);
return false
}}
Example calling:
ionViewCanEnter(): boolean | Promise<any> {
return this.auth.isAuthenticated(this.nav);
}
If I have only CreateAccountPage, the script runs fine. However, when I add WalkthroughPage, it throws the following error:
Error: Can't resolve all parameters for ListingPage: (?, [object Object], [object Object], [object Object]).
Which is an error related to the AuthService. For clarity the WalkthroughPage code is as follows:
import { Component, ViewChild } from '#angular/core';
import { IonicPage, NavController, Slides } from 'ionic-angular';
import { RemoteConfigProvider } from '../../providers/remote-config/remote-config';
import { LoginPage } from '../login/login';
import { SignupPage } from '../signup/signup';
#IonicPage()
#Component({
selector: 'walkthrough-page',
templateUrl: 'walkthrough.html'
})
export class WalkthroughPage {
lastSlide = false;
sign_up_enabled: null;
sign_in_enabled: null;
#ViewChild('slider') slider: Slides;
constructor(public nav: NavController,
public remoteConfig: RemoteConfigProvider) {
}
ionViewDidLoad() {
this.remoteConfig.getValue('sign_up_enabled').then(t => {
this.sign_up_enabled = t;
})
this.remoteConfig.getValue('sign_in_enabled').then(t => {
this.sign_in_enabled = t;
})
}
skipIntro() {
this.lastSlide = true;
this.slider.slideTo(this.slider.length());
}
onSlideChanged() {
this.lastSlide = this.slider.isEnd();
}
goToLogin() {
this.nav.push(LoginPage);
}
goToSignup() {
this.nav.push(SignupPage);
}
}
I have attempted to compare both pages, but not identified the exact cause. I welcome any thoughts.
For those who encounter a similar issue, the fix was straight forward. I simply used deep-linking reference which resolved all issues. Example below.
isAuthenticated(nav: NavController): boolean | Promise<any> {
const userAuth = this.userStore.getAuthenticated;
const userProfile = this.userStore.getUserProfile;
if (userAuth) {
return true
} else {
console.log('Auth guard: Not authenticated');
setTimeout(() => { nav.setRoot('no-access') }, 0);
return false
}
}
I want to retrieve places coordinates from restApi and display them on the map.
I got error : Cannot read property 'length' of undefined
Please help me !
I want you to tell me how i can get my data in order to add multiple markers.
This is my portion of code
import { Component, ViewChild, ElementRef } from '#angular/core';
import { NavController, NavParams } from 'ionic-angular';
import { Geolocation } from '#ionic-native/geolocation';
import { RestProvider } from '../../providers/rest/rest';
declare var google;
#Component({
selector: 'page-localisation',
templateUrl: 'localisation.html',
})
export class LocalisationPage {
#ViewChild('map') mapElement: ElementRef;
map: any;
places: Array<any>;
errorMessage : string;
constructor(public navCtrl: NavController, public navParams: NavParams, public geolocation: Geolocation, public rest: RestProvider) {
}
ionViewDidLoad(){
this.loadMap();
this.getPlaces();
this.addPlacesToMap()
console.log("Length : " + this.places.length) ; //Error Cannot read property 'length' of undefined
}
getPlaces() {
this.rest.getPlaces().subscribe(
places => this.places = places,
error => this.errorMessage = <any>error
);
}
loadMap(){
let latLng = new google.maps.LatLng(-4.066548, 5.356315);
let mapOptions = {
center: latLng,
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
this.map = new google.maps.Map(this.mapElement.nativeElement, mapOptions);
}
addPlacesToMap(){
//...
}
addInfoWindow(marker, content){
let infoWindow = new google.maps.InfoWindow({
});
content: content
google.maps.event.addListener(marker, 'click', () => {
infoWindow.open(this.map, marker);
});
}
}
ionViewDidLoad is launched before "this.rest.getPlaces().subscribe" is finished... So your variable "places" is NULL
Change getPlaces to a Promise
async getPlaces() {
places = await this.rest.getPlaces() ;
return places
}
Then in ionViewDidLoad
ionViewDidLoad(){
var that = this ;
this.loadMap();
this.getPlaces().then((places)=>{
that.places = places;
console.log("Length : " + that.places.length) ;
});
this.addPlacesToMap()
}
I have created a little phone app with Ionic. I am trying to implement a bit logic where the component knows when its online or offline. To do so I am using the network plugin fom Ionic and it just does not work as expected.
instead of updating the
this.connected
value every time when I switch on / off the network, it will only do so if I switch it off / on AND do something like switching from landscape to portrait mode, or work on a different app for a while and come back to the app.
Really puzzled by that.
Here is the code:
import {Component} from '#angular/core';
import {NavController, NavParams, Platform} from 'ionic-angular';
import {GooglePlus} from '#ionic-native/google-plus';
import {SurveyService} from "./survey.service";
import {Survey} from "../../Declarations/Survey";
import {SurveyPage} from "../survey/survey";
import {Network} from "#ionic-native/network";
#Component({
selector: 'page-home',
templateUrl: 'home.html',
providers: [SurveyService, Network]
})
export class HomePage {
public surveys: Survey[] = [];
public connected;
public networkType;
constructor(public navCtrl: NavController,
private googlePlus: GooglePlus,
private surveyService: SurveyService,
public navParams: NavParams,
platform: Platform,
private network: Network) {
this.checkForNetwork();
this.surveyService.getAvailable().subscribe(surveys => {
this.checkForNetwork();
this.surveys = surveys;
})
}
login() {
this.googlePlus.login({
'webClientId': '632130231957-dmjd154jhq1eenimedri3m0de6sh7tln.apps.googleusercontent.com'
}).then((res) => {
console.log(res);
}, (err) => {
console.log(err);
});
}
logout() {
this.googlePlus.logout().then(() => {
console.log("logged out");
});
}
openSurvey = (survey: Survey) => {
this.navCtrl.push(SurveyPage, {
survey: survey
});
}
checkForNetwork = () => {
this.networkType= this.network.type;
this.network.onDisconnect().subscribe(() => {
this.connected = false;
this.network.type = null;
});
this.network.onConnect().subscribe(() => {
this.connected = 'network connected!';
setTimeout(() => {
if (this.network.type === 'wifi') {
this.connected = true;
}
}, 3000);
});
}
}
OK, I worked it out:
Turns out that ionic works perfectly fine, but I tried to change the view of my application depending on whether
this.connected
is true or false. I did not realize that I needed to tell Angular to refresh its view by using Application
applicationRef.tick();
in the right place. So basically, once the Ionic changes the value of this.connected you need to tell Angular about it, here is the corrected part of the code:
You need to inject ApplicationRef into the constructor
constructor(public navCtrl: NavController,
...
private appReference: ApplicationRef) {
...
checkForNetwork = () => {
this.networkType= this.network.type;
this.network.onDisconnect().subscribe(() => {
this.connected = false;
this.network.type = null;
this.appReference.tick();
});
this.network.onConnect().subscribe(() => {
this.connected = 'network connected!';
setTimeout(() => {
if (this.network.type === 'wifi') {
this.connected = true;
this.appReference.tick();
}
}, 3000);
});
}
I'm trying to wrap my head around the following problem:
I have a 'google-place-autocomplete' directive that adds the autocomplete functionality to an input field.
Now I also wanted it to be able to force a google place selection and only be 'valid' if the user has selected a place.
E.g:
#Directive({
selector: '[googlePlace][formControlName], [googlePlace][ngModel]',
providers: [{provide: NG_VALIDATORS, useExisting: GooglePlaceDirective, multi: true}]
})
export class GooglePlaceDirective implements Validator, OnChanges {
valid = false;
#Output() googlePlaceAddressChange: any = new EventEmitter();
#Input() googlePlaceAddress: any;
#Output() ngModelChange: any = new EventEmitter();
private autocomplete: any;
constructor(private googleMapService: GoogleMapsService,
private element: ElementRef,
private zone: NgZone) {
}
ngOnInit() {
let self = this;
this.googleMapService
.load()
.subscribe(
() => {
this.autocomplete = new google.maps.places.Autocomplete(this.element.nativeElement);
this.autocomplete.addListener('place_changed', function () {
self.placeChanged(this.getPlace());
});
}
);
}
private placeChanged(place) {
this.zone.run(() => {
this.googlePlaceAddress = {
address: this.element.nativeElement.value,
formattedAddress: place.formatted_address,
latitude: place.geometry.location.lat(),
longitude: place.geometry.location.lng()
};
this.valid = true;
this.googlePlaceAddressChange.emit(this.googlePlaceAddress);
this.ngModelChange.emit(this.element.nativeElement.value);
});
}
ngOnChanges(changes): void {
let googlePlaceDefined = typeof (changes.googlePlaceAddress) !== 'undefined';
let modelDefined = typeof (changes.ngModel) !== 'undefined';
if(modelDefined && !googlePlaceDefined) {
this.valid = false;
} else if(googlePlaceDefined && !modelDefined) {
this.valid = true;
}
}
validate(control: AbstractControl) {
return this.valid === false ? {'googlePlaceAddress': true} : null;
}
}
If I use this directive in an template driven form:
...
<input name="addr" type="text" [(ngModel)]="textValue" [(googlePlaceAddress)]="googleAddress" required>
<p *ngIf="addr.errors.googlePlaceAddress">Please select a proposed address</p>
...
it works fine.
Now I need to use this in an Reactive Form using FormGroup
let groups = [
new FormControl('', [Validators.required])
];
/** HTML **/
...
<input [id]="addr"
[formControlName]="address"
class="form-control"
type="text"
googlePlace
[placeholder]="question.label"
[(googlePlaceAddress)]="googleAddress">
...
However in this case the validation from the directive is never triggered.
I suppose angular2 expects it to be given through, when using Reactive Forms:
new FormControl('', [Validators.required, ???])
I must have taken a wrong path somewhere.
For future reference:
I solved my problem creating a component out of it together with a Value accessor:
#Component({
selector: 'app-google-place',
templateUrl: './google-place.component.html',
styleUrls: ['./google-place.component.scss'],
providers: [
{
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => GooglePlaceComponent),
multi: true
}
]
})
export class GooglePlaceComponent implements OnInit, ControlValueAccessor {
#ViewChild('inputElement') inputElement: ElementRef;
#Input() public placeholder: string = "Address";
#Input() public textValue: string = "";
private autocomplete: any;
private _place = null;
constructor(
private googleMapService: GoogleMapsService,
private zone: NgZone
) {
}
ngOnInit() {
this.googleMapService
.load()
.subscribe(
() => {
this.autocomplete = new google.maps.places.Autocomplete(this.inputElement.nativeElement);
this.autocomplete.addListener('place_changed', () => this.placeChanged());
}
);
}
placeChanged() {
this.zone.run(() => {
let place = this.autocomplete.getPlace();
this._place = {
address: this.inputElement.nativeElement.value,
formattedAddress: place.formatted_address,
latitude: place.geometry.location.lat(),
longitude: place.geometry.location.lng()
};
this.propagateChange(this._place);
});
}
onNgModelChange($event) {
if(this._place !== null) {
if(this._place.address !== $event) {
this._place = null;
this.propagateChange(this._place);
}
}
}
onBlur() {
this.propagateTouched();
}
writeValue(obj: any): void {
if(obj !== undefined) {
this._place = obj;
}
}
propagateChange = (_: any) => {};
registerOnChange(fn) {
this.propagateChange = fn;
}
propagateTouched = () => {};
registerOnTouched(fn: any): void {
this.propagateTouched = fn;
}
}
Using this I can use it in a FormGroup with the Validators.required and it will only be valid if a user has selected a google place.
EDIT
The html:
<input type="text"
(blur)="onBlur()"
#inputElement
class="form-control"
[(ngModel)]="textValue"
(ngModelChange)="onNgModelChange($event)">
The service:
import {Injectable} from '#angular/core';
import {Subject} from 'rxjs/Subject';
import {Observable} from 'rxjs/Observable';
#Injectable()
export class GoogleMapsService {
private key = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
private loaded = false;
private currentRequest = null;
constructor() {
}
load() {
if (this.loaded) {
return Observable.create((observer) => {
observer.next();
observer.complete();
});
}
if (this.currentRequest === null) {
//http://reactivex.io/rxjs/manual/overview.html#multicasted-observables
const source = Observable.create((observer) => {
this.loadMaps(observer);
});
const subject = new Subject();
this.currentRequest = source.multicast(subject);
this.currentRequest.connect();
}
return this.currentRequest;
}
private loadMaps(observer: any) {
const script: any = document.createElement('script');
script.src = 'https://maps.googleapis.com/maps/api/js?key=' + this.key + '&libraries=places';
if (script.readyState) { // IE, incl. IE9
script.onreadystatechange = () => {
if (script.readyState == 'loaded' || script.readyState == 'complete') {
script.onreadystatechange = null;
this.loaded = true;
observer.next();
observer.complete();
this.currentRequest = null;
}
};
} else {
script.onload = () => { // Other browsers
this.loaded = true;
observer.next();
observer.complete();
this.currentRequest = null;
};
}
script.onerror = () => {
observer.error('Unable to load');
this.currentRequest = null;
};
document.getElementsByTagName('head')[0].appendChild(script);
}
}
The 'usage':
With template ngModel
<app-google-place ([ngModel)]="place"></app-google-place>