Use Ionic Tabs for Actions - android

I really like the style of the Tabs in Ionic 3 when you have an icon and a text:
https://ionicframework.com/docs/components/#tabs-icon-text
However in the App I am using I have 4 Actions. For example open the Camera, open Google Maps and so on. And this I want to display on the bottom of the page exactly in this kind of style.
How can I achieve this, since this is not the real purpose of the Tabs and since I haven't found a similar Component.

Just like you can see in the Tab docs:
Sometimes you may want to call a method instead of navigating to a new
page. You can use the (ionSelect) event to call a method on your class
when the tab is selected.
<ion-tabs>
<ion-tab (ionSelect)="chat()" tabTitle="Show Modal"></ion-tab>
</ion-tabs>
And then
export class Tabs {
constructor(public modalCtrl: ModalController) {}
chat() {
let modal = this.modalCtrl.create(ChatPage);
modal.present();
}
}

Related

Ionic 4: Hardware Back Button Reloading Application

Working on a Project and stuck in an Issue:
Hardware Back Button Reloading Application (I am using Angular Router in this application).
My Code to Exit Application:
ionViewDidEnter(){
this.subscription = this.platform.backButton.subscribe(()=>{
navigator['app'].exitApp();
});
}
ionViewWillLeave(){
this.subscription.unsubscribe();
}
While same logic Working in other applications. but in this application its reloading the application not exiting it.
P.S: i have also tried it to put in platform.ready() but no luck.
With IONIC 4, there is new method subscribeWithPriority developed to handle race between soft & hard back button. Try modifying your code like below:
this.platform.backButton.subscribeWithPriority(1, () => {
navigator['app'].exitApp();
});
subscribeWithPriority() stops the propagation of the event after its execution and if we subscribe with high priority and execute our prefered navigation instead of default one then it is going to work as you want.
More reference docs for details:
https://github.com/ionic-team/ionic/commit/6a5aec8b5d76280ced5e8bb8fd9ea6fe75fe6795
https://medium.com/#aleksandarmitrev/ionic-hardware-back-button-nightmare-9f4af35cbfb0
UPDATES:
Try using this new version of exitApp cordova plugin. I haven't
tried myself but looks promising from popularity.
Also try to empty the page stack from Navcontroller or go to your home screen, seems like that's causing the reload for app with sidemenu's & tab pages... this.navCtrl.pop() / this._navCtrl.navigateBack('HomeScreen'), and then call exitApp.
NOTE: Tabs & SideMenu as those have its own routing module does create lot of complexity with app navigation.
Solved:
As Mention by #rtpHarry template of SideMenu / Tabs have History which leads application to Reload it self on root page. i was able to solve this by clearing History.
ionViewDidEnter(){
navigator['app'].clearHistory();
}
on Your Root Page just Clear your history and your Hardware Back Button will close the Application instead of Reloading it.
Do you have a sidemenu in your app? I'm just curious because this seems to be when I get this problem as well.
If you look in your inspector, you will see that window.history has a length of 1.
I don't see it in some of my apps, but the app that I have a side menu setup acts this way - on the homepage if you press back the screen goes white then it reloads the app.
Like I say, looking in the inspector shows that there is a history to step back to, which it is trying to do, and whatever that history step is, it just pushes it forward back to the homepage, which made me wonder if it was the sidemenu setting up its own control of the navigation system.
I've probably said some poorly worded terminology but as I haven't solved this myself I thought I would just let you know what I had found... hopefully it helps you move forward.
In my scenario, I wasn't even trying to do the exit on back code - I just noticed that the app would appear to "reboot" if I kept pressing back.
This explain the solution on Ionic 5 (and 4.6+ too I think).
private backButtonSub: Subscription;
ionViewDidEnter() {
this.backButtonSub = this.platform.backButton.subscribeWithPriority(
10000,
() => {
// do your stuff
}
);
}
ionViewWillLeave() {
this.backButtonSub.unsubscribe();
}
also keep
IonicModule.forRoot({
hardwareBackButton: true
}),
to true (default) in your app.module.ts
Sources:
https://www.damirscorner.com/blog/posts/20191122-CustomizingAndroidBackButtonInIonic4.html
The Doc

Ionic 3 - How to implement viewpager?

I am currently developing an application using Ionic 3, the main screen consists of 3 tabs (ion-tabs) I created a function to change tabs according to the user's swipe, however my client asks for a transition equal to WhatsApp and I do not know to implement this. I thought of using ion-slides but I would have to migrate the code from the 3 tabs to a single view, is there a way to append the animation without having to change the component?
<ion-tabs #Tabs no-border tabsPlacement="top" tabsHighlight='true' color="secondary" >
<ion-tab [root]="disponiveisRoot" tabTitle="Disponiveis" ></ion-tab>
<ion-tab [root]="meusPedidosRoot" tabTitle="Meus pedidos" ></ion-tab>
<ion-tab [root]="finalizadosRoot" tabTitle="Finalizados" ></ion-tab>
</ion-tabs>
You can use ionic2-super-tabs. This library makes it possible to make swipable tabs easily. You have to check the github page for compatability and which version you should use.
With the library a basic example would be as below. It's almost the same as the tabs from Ionic it self.
Basic example
Component:
export class MyPage {
page1: any = Page1Page;
page2: any = Page2Page;
page3: any = Page3Page;
}
HTML:
<super-tabs>
<super-tab [root]="page1" title="First page"></super-tab>
<super-tab [root]="page2" title="Second page"></super-tab>
<super-tab [root]="page3" title="Third page"></super-tab>
</super-tabs>

Transitions during page navigation in phonegap android app

I am developing a phonegap android application using jquery Mobile that consists three html pages. I want to include transitions during navigation from one page to another.
For navigation between pages i have used
window.location = "abc.html";
Each page consists some dynamic data that loads on page initialization.
I have tried data-transition="slide". But there isn't any effect.
How can i include slide transition for page navigation in my application ?
$.mobile.changePage('abc.html', { transition : 'slide'});
function change_page(page){
$.mobile.changePage( page, { transition: "slide", changeHash: false });
}
Call this function:change_page('#load_page'); OR change_page('mypage.html');

How Removing window from a tab in titanium?

I am using titanium appecelerator to build an app in both ios and android.
I use the following code to create a tab group and add a tab to it.
var localTabGroup = Ti.UI.createTabGroup();
var planTab = Ti.UI.createTab({
title : NYC.Common.StringConstant.TAB_TITLE_PLAN,
icon : NYC.Common.ResourcePathConstant.IMG_TAB_PLAN,
window : planTabWin
});
localTabGroup.open();
And call the following function to create a window and add it to the tab
addWindowToTabGroup : function(window) {
tabGroup.activeTab.open(window, {
animated : true
});
},
Now, I often have to remove window from the stack of the tab ( eg: on android back button or ios navigation bar back)
Till now, I use window.close() to remove the window from the stack . But, it always shows warnings like.
[ERROR][TiBaseActivity( 378)] (main) [3320,4640528] Layout cleanup.
[WARN][InputManagerService( 62)] Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy#406e4258
I was just wondering if I am following the correct approach? Or is there a better way to remove a window from the tab?
Thanks.
Tabs behave a lot differently on iOS and Android, On Android, the tab does not maintain a stack of windows. Calling open opens a new, heavyweight window, which by default covers the tab group entirely.This is very different from iOS, but it is for Android applications. Users always use the Back button to close the window and return to the tab group.
This may be happening because you are trying to remove the window even though natively Android already removes it. Check out the Android Implementation Notes of the docs here
To completely eliminate this problem, I would just open up a modal window without using the TabGroup, this would be more cross platform:
addWindowToTabGroup : function(window) {
window.open({
modal : true,
animated : true
});
}
This will open a modal window which behaves the same on both platforms, and can be handled easily by the native back button functionality.

Is there jQuery Mobile's equivalent to the Android's ViewPager?

I want to create a horizontal swiping effect using jQuery Mobile. After doing a little bit of research, I found out that ViewPager, which is generally found in the app details page of Android Market, does what I want. In the page specified the author describes it along with code in Android, but I wanted to know if there is an equivalent plug-in or feature in jQM.
I like SwipeJS, it's lightweight and I like the one-to-one slide factor it uses (when you slide your finger across the element, it moves at the same rate).
There is also iScroll 4 that works pretty well (it seems to be more difficult to setup than SwipeJS).
You can however utilize the built-in swipe events in jQuery Mobile. You can bind to the swipeleft or swiperight events for the data-role="page" element(s) and navigate the user to the correct page based on the current page:
$(document).delegate('#page-two', 'swipeleft', function () {
//next page
$.mobile.changePage($('#page-three'));
}).delegate('#page-two', 'swiperight', function () {
//prev page
$.mobile.changePage($('#page-one'), { reverse : true });
});
Here is a demo: http://jsfiddle.net/fFGvD/
Notice the { reverse : true } object being passed as the option object to the changePage() function so the animation will play in reverse.

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