jquery onclick not responding in android tablet - android

My image-slider code is perfectly working pc ,ipad but on tablet onclick event is not working. when i used .on and print something with alert then onclick works. if i am replacing alert with console.log then it's not working .
i don't understand why is this happening ?
$('#myImageFlow').on("touchstart click",".sliderImage", function(event)
{
//alert('i am on method '+event.type);
console.log('on method ==='+event.type);
});

Simply: console.log is browser-related and you have no way to know if it will work or not (console is browser-dependant). Use other method to log (alert is ok in debug time imho)

try to use tap event of jquery instead of click.

Related

Ionic onHardwareBackButton implementation

I'm trying to control how the android hardware back button behaves in my app. I had it all working but now I can't reproduce it. The code I'm using is in app.js. I'm expecting the back button to do nothing but write to the console.
.run(function($ionicPlatform) {
$ionicPlatform.onHardwareBackButton(function() {
console.log("!!!!!!!!!!!!!!!!!!!!!!!!!!!")
});
Can any one see what the problem is? I'm running ionic CLI v1.7.11. I'm running the code with ionic view on android
You can find full details, including a full working solution for both hard & soft back buttons at my related post:
Ionic override all BACK button behaviour for specific controller
To summarise how I handled the hardware back button, the trick is to register an action for the Back button, using code like this:
var doCustomBack= function() {
// do something interesting here
};
// registerBackButtonAction() returns a function which can be used to deregister it
var deregisterHardBack= $ionicPlatform.registerBackButtonAction(
doCustomBack, 101
);
$scope.$on('$destroy', function() {
deregisterHardBack();
});
The actual setting is done in that second block calling $ionicPlatform.registerBackButtonAction().
This returns a method that can be called to deregister the action later on if you want to.
It was a ionic view problem. Seems it does not support this.

Closing Bootstrap modals in android with phonegap

I am using this bootstrap modals (popups) and they work great in my browser. The problem is, when I launch them on android using phonegap, they do not close when the close button is pressed. When I click on the ovelay next to the popup, everything seems to be working alright ;/ I am very confised...
EDIT: I use exactly the same code as in the example and something goes wrong...
I added this function to my angular.js controller:
$scope.closeModal = function (idOfModal) {
$(idOfModal).modal('hide');
}
And also to the confirm/save buttons of modals, after the controller's function is executed, at the very end again I add $(idOfModal).modal('hide');, where I also pass idOfModal to the function ;)

Android phonegap - click event is fired on the next screen

I'm using phonegap (cordova 2.8), and android 4.2.1,
I use as frame works: knockout, & jquery mobile.
The app is based on http://propertycross.com/jquery-mobile/
I get the following funny behavior:
when clicking on a button that moves to another screen #2,
if there is a button in #2 screen at the same location,
then it get clicked as well...
The only solution I found is to wrap the code that change the screen with setTimeout:
setTimeout(function() {
application.navigateTo(viewModel);
},600);
This solve the problem but slow down the app...
This is actually unfortunate since the phonegap is already too slow...
Thanks.
There are two things you can do:
1) e.stopPropagation(), e.preventDefault()
phopkins describes this here:
jQuery mobile tap event triggered for twice
I'll elaborate, as this was a major issue for me. This applies to any of the tap, click, vclick and probably other events.
Your event functions should have stopPropogation() and preventDefault() called, like so:
$('#selector').tap(function(e) {
//your code here
e.stopPropagation();
e.preventDefault();
});
This helps, however, I found that you could still get the "phantom" click.
2) Bind the event to the page, not the button.
That way it's not bound to the next page.
For example, for a page with id='myPage' and a button with id='myBtn':
$('#myPage').on('tap', '#myBtn', function(e) {
//your code here
e.stopPropagation();
e.preventDefault();
});

jQuery.mobile popup immediately hides after showing

I have a small phonegap application with jquery mobile and backbone.
I'm trying to show popup to user by manually calling .popup() method.
Everything works fine on iOS but on android I got strange issue: popup is showing for few moments and than disappear.
Here the actual code:
var PostView = Backbone.View.extend({
events: {
'touchend .add-comment-button': 'addComment'
},
addComment: function() {
this.$(".comment-popup").popup('open', { history: false });
return false; // Stop bubbling.
}
});
I'm using history: false because this popup is actualy part of subpage.
The code looks very simple, I'm just can't understand why it can disappear, and why this happen only on android devices.
Thanks, and sorry for my bad english.
I spent hours trying to fix this problem.
Finally I ended up doing the following two things that seemed to fix the problem.
1 - Use the uncompressed jqm file. i.e jquery.mobile.1.2.0.js
2 - I was triggering the popup programatically using the 'tap' option - once changed to the 'click' option it worked.
$('.option').live('click', function() {
$('#popup-div').popup('open');
});
I spent hours trying to fix this problem.
Finally I ended up doing the following two things that seemed to fix the problem.
this code snippet may help you ->
$('#testBtn').on('tap',function(e){
console.log("button clicked");
e.preventDefault();
$('#testPOPUP').popup("open");
});
Please note i have used e.perventDefault().
I didn't feel like changing my .tap() events to the click event and I didn't have a case where I could use preventDefault()so I just added a timeout to the popup('open') line. My hoverdelay in jqm is set to 150 so I set this timeout to 600 just to be on the safe side. Works fine, doesn't feel sluggish for the user.
One way to 'fix' it is by setting data-history="false" on the popup div
See also this question
JQuery Mobile popup with history=false autocloses
I have the exact same problem when trying to use popup('open') on an android 2.3 device (both in native browser and in firefox) and it works just fine on browsers on other devices. I'm also using backbone event management to open my popup (used the tap event and no aditionnal options to popup).
What I did to 'correct' the problem is that I removed the backbone event management for this event and added a listener in the render function. In your case this would look something like this :
events: {
// 'touchend .add-comment-button': 'addComment'
},
render: function() {
$(this.el).html(this.template(this.model));
$(this.el).find('.add-comment-button').tap(function(el){
this.addComment(el);
return false;
}.bind(this));
}
I have no idea where the problem comes from (must be some incompatibility between backbone and jquery mobile) and why we only see it on android but for the moment with this workaround my app seems to work fine on any device.
Edit: oops, it turns out that in my case the problem was I was missing "return false;" in the function dealing with the event.
Now that I added it, it works correctly with the backbone event management.
Sadly that doesn't explain why you have the issue and why I was seeing it only on android.
In case it helps anyone, I had the same problem occurring with Bing Maps, with the Microsoft.Maps.Events.addHandler(pin, 'click', callback) method.
Not particularly nice, but instead I stored an ID in pushpin._id and did the following:
$("#page").on('vclick', function (event) {
if (event.target.parentElement.className === "MapPushpinBase") {
$("#stopPopup").popup('open');
}
});
One brute force option is to check whether popup was hidden and reopen it.
In a loop, because the exact time the popup becomes hidden seems to be varied.
var hidden = $('#' + id + '-popup') .hasClass ('ui-popup-hidden')
if (hidden) $('#' + id) .popup ('open')
A working example: http://jsfiddle.net/ArtemGr/hgbdv9s7/
Another option could be to bind to popupafterclose:
var reopener = function() {$('#' + id) .popup ('open')}
$('#' + id) .on ('popupafterclose', reopener)
$('#' + id) .popup ('open')
Like here: http://jsfiddle.net/ArtemGr/gmpczrdm/
But for some reason the popupafterclose binding fails to fire on iPhone 4 half of the time.

How to implement the event onkeyup in JQuery witout using JQuery mobile?

I have a mobile app and I can't use JQuery Mobile at the moment, only JQuery.
I found out that in Android mobile the "onkeyup" event is not working at all, only if the user type "back" the event fires.
I have one "input" field (HTML5) and need to attach the onkeyup event to it. What to do? I tried to replace the val(), adding the val somhting like "#" and remove it quickly. It doesn't helped.
Any ideas?
You can use this below.
$(document).ready(function() {
$("#MyElement").keyup(Function(e) {
$("#MyElement").val("MyValue");
});
});
the e param should tell you what key was pressed with the properties keycode and which.
hope this lends you to the right direction.

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