ionic4

问题 I'm using angular routing(@angular/router) for ionic 4 project to disable the device back-button in ionic 4 prevent-default is not working below is my code in app.component.ts this.platform.backButton.subscribe(() => { if (this.router.url === '/Login') { this.util.presentAppExitAlert(); } else { // event.preventDefault(); console.log("invoing url ", this.router.url); } }); }); i am not able to disable the device back-button any help here 回答1: initializeApp() { this.platform.ready().then(() =>

问题 I'm building an app with ionic v4 the first time and I want to include a side menu. For testing reasons, I first put it inside of the app.component.html but I couldn't let it swipe out or in. So I saw in the documentation, that they added the main attribute on the ion-router-outlet but as far as I read: it is not documented anywhere. I don't know, why I'd have to add this, to make it actually work. Source: https://ionicframework.com/docs/api/menu <ion-router-outlet main></ion-router-outlet>

问题 I'm building an app with ionic v4 the first time and I want to include a side menu. For testing reasons, I first put it inside of the app.component.html but I couldn't let it swipe out or in. So I saw in the documentation, that they added the main attribute on the ion-router-outlet but as far as I read: it is not documented anywhere. I don't know, why I'd have to add this, to make it actually work. Source: https://ionicframework.com/docs/api/menu <ion-router-outlet main></ion-router-outlet>

问题 I have an Ionic 4 app that has a form with inputs in it. When the user clicks on the input, it opens the keyboard, but it hides the content, without scrolling. Is there any way around this? This is my code: <form #f="ngForm" (ngSubmit)="sendMail()"> <ion-item> <ion-label position="floating">name </ion-label> <ion-input [(ngModel)]="senderName"> </ion-input> </ion-item> <ion-item> <ion-label position="floating">mail </ion-label> <ion-input [(ngModel)]="senderMail"> </ion-input> </ion-item>

问题 I'm building an Ionic app that has heavy text editing, and I would like to customize the context menu that appears when making a text selection (shown below). How can I add buttons to this menu? Can it be customized even further? Is it possible to switch this menu out entirely for some custom HTML menu else that appears when the user makes a text selection? I've seen the plugin cordova-plugin-context-menu but it does not seem to be what I need (although it's hard to say because it doesn't

问题 I'm building an Ionic app that has heavy text editing, and I would like to customize the context menu that appears when making a text selection (shown below). How can I add buttons to this menu? Can it be customized even further? Is it possible to switch this menu out entirely for some custom HTML menu else that appears when the user makes a text selection? I've seen the plugin cordova-plugin-context-menu but it does not seem to be what I need (although it's hard to say because it doesn't

问题 I'm tying to use google-place-api autoComplete in my project, but it gives me an error: TypeError: Cannot read property 'getInputElement' of undefined .html <section [formGroupName]="i" *ngFor="let tech of form.controls.stations.controls; let i = index"> <ion-item-group> <ion-item-divider color="light">Station #{{ i + 1 }}</ion-item-divider> <ion-item> <ion-label position="floating">Technology name:</ion-label> <ion-input #autoStation type="text" maxlength="50" formControlName="name"></ion

问题 i am trying to implement the apple-sign-in method using a cordova plugin and set the credentials to firebase. what i actually have is: constructor ( public afAuth: AngularFireAuth, public afs: AngularFirestore, @Inject(FirebaseApp) firebase: any ){ this.firebase = firebase; } loginApple(): Promise<boolean> { return new Promise((resolve, reject) => { cordova.plugins.SignInWithApple.signin({ requestedScopes: [0, 1] }, function(succ){ var provider = new firebase.auth.OAuthProvider('apple.com')

问题 There are a lot of tutorials and articles of how to include Font Awesome in an Ionic 3 project but I struggled finding any on how to add Font Awesome into an Ionic 4 project. So this poses the question, how do you add and use Font Awesome in an Ionic 4 project? I have tried using the following tutorial without much success. I tried following the steps outlined in the following StackOverflow answer which did not work either. 回答1: To get Font Awesome working in an Ionic 4 project you can follow

问题 I having problems trying to change the background color in just one IONIC 4 (--type=angular) page. I am trying to add a class for the ion-content. In my html file I Have: <ion-content class="fondologin"> ... </ion-content> In my sass I have: .fondologin{ background-color: #111D12!important; } The background color is never changed. If I add --ion-background-color:#111D12; in variables.scss the background is successfully changed for every page but I just one to change the color in one page. How