ionic4

ngOnInit vs ionViewDidLoad in ionic 2 or ionic 2+

由 耗尽温柔 提交于 2019-11-29 05:01:42
问题 Which one will I use for initializing data and why? ngOnInit() { this.type = 'category'; this.getData(); this.setData(); } ionViewDidLoad() { this.type = 'category'; this.getData(); this.setData(); } 回答1: ngOnInit is a life cycle hook called by Angular2 to indicate that Angular is done creating the component. ionViewDidLoad is related to the Ionic's NavController lifeCycle events. It runs when the page has loaded. This event only happens once per page being created. Basically both are good

NavController doesn't work in Ionic 4

由 廉价感情. 提交于 2019-11-28 06:23:25
I'm injecting NavController in my constructor as I want to push a page. But, below code doesn't work in Ionic 4. It was totally okay in Ionic 3. Constructor constructor(public menuCtrl: MenuController, public navCtrl: NavController) { this.menuCtrl.enable(true); } Method goToSecondPage() { this.navCtrl.push(list); } Now, to complete the final step and implement those routes in our app-routing.module.ts file, they would look like this: const routes: Routes = [ { path: '', redirectTo: '/home', pathMatch: 'full' }, { path: 'home', loadChildren: './pages/home/home.module#HomeModule' }, { path:

Handling hardware back button in Ionic3 Vs Ionic4

由 荒凉一梦 提交于 2019-11-27 21:28:18
Please find the below code for the Android hardware back button action in ionic3 . As Ionic4 uses angular routing for navigation how the pop event will take place for the back button? If we want to pop to the last page we can use the following code this.navCtrl.goBack('/products'); . But how we can use it for the android hardware back button action in ionic4 ? Ionic3 hardware back button action this.platform.registerBackButtonAction(() => { let activePortal = this.ionicApp._loadingPortal.getActive() || this.ionicApp._modalPortal.getActive() || this.ionicApp._toastPortal.getActive() || this

@ionic/angular 4.0.0-beta.13 : Not allowed to load local resource : with webview 2.2.3 - Ionic CLI 4.3.1

由 只谈情不闲聊 提交于 2019-11-27 09:37:05
After taking the photo from camera, these paths come. file:///data/data/xxx.xxx.xxx.xxx/files/1542782360167.jpg I use Ionic 4 in which WebView is 2.2.3, all types of replies have been observed by applying but no effects came. "cordova-plugin-ionic-webview": "2.2.3" I used to answer this one Not allowed to load local resource: ionic 3 android So I do not show the application on the device and this one is not the same. Failed to load resource: net::ERR_FILE_NOT_FOUND I have found the solution of my problem. I have done this link which is working perfectly. https://devdactic.com/ionic-4-image

how to check app running in foreground or background in ionic/cordova/phonegap

由 耗尽温柔 提交于 2019-11-26 20:05:40
问题 Is there any way to check whether the app is running in foreground or background in ionic/cordova/phonegap, I need to use it on android and ios, thanks a lot 回答1: Use the two Events " Pause " and " Resume ". You will find all Events here in the Apache Cordova Events Documentation. Event - Pause: The pause event fires when the native platform puts the application into the background, typically when the user switches to a different application. Event - Resume The resume event fires when the

Getting “Uncaught (in promise): TypeError: Object(…) is not a function” Error from Ionic-native VideoEditor Plugin

由 拟墨画扇 提交于 2019-11-26 19:10:26
I'm developing an ionic app, where user can record a new video. Then I want to break the video into frames and send frames to a server. I'm using createThumbnail function from ionic-native VideoEditor plugin. But when I try to call createThumbnail function, it throws ERROR Error: Uncaught (in promise): TypeError: Object(...) is not a function Here's my source code. HTML Code <ion-content padding> <button ion-button full (click)="captureVideo()">Capture video</button> <br/> <ion-list> <ion-item *ngFor="let file of mediaFiles" tappable (click)="playFile(file)" text-wrap> {{file.name}} <p>{{file

@ionic/angular 4.0.0-beta.13 : Not allowed to load local resource : with webview 2.2.3 - Ionic CLI 4.3.1

由 梦想的初衷 提交于 2019-11-26 17:52:04
问题 After taking the photo from camera, these paths come. file:///data/data/xxx.xxx.xxx.xxx/files/1542782360167.jpg I use Ionic 4 in which WebView is 2.2.3, all types of replies have been observed by applying but no effects came. "cordova-plugin-ionic-webview": "2.2.3" I used to answer this one Not allowed to load local resource: ionic 3 android So I do not show the application on the device and this one is not the same. Failed to load resource: net::ERR_FILE_NOT_FOUND 回答1: I have found the

Getting “Uncaught (in promise): TypeError: Object(…) is not a function” Error from Ionic-native VideoEditor Plugin

由 假如想象 提交于 2019-11-26 04:55:50
问题 I\'m developing an ionic app, where user can record a new video. Then I want to break the video into frames and send frames to a server. I\'m using createThumbnail function from ionic-native VideoEditor plugin. But when I try to call createThumbnail function, it throws ERROR Error: Uncaught (in promise): TypeError: Object(...) is not a function Here\'s my source code. HTML Code <ion-content padding> <button ion-button full (click)=\"captureVideo()\">Capture video</button> <br/> <ion-list>
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