tsonevn
commented
6 years ago Hi @VeeK727,
We investigated the project and found that the issue in your case is related to the fact that the items in the RadListView have been removed and added on every page loaded event. And regarding that, the ListView will try to restart the state of the selected items, before the items have been loaded. To solve your case, I would suggest to set up a flag which will set up the request to be executed on the initial page load. For example:
let firstload = true;
exports.onLoaded = function(args) {
page = args.object;
if(firstload){
purityVM = new observableModule.fromObject({
userAvatar: settings.getString("userAvatar"),
userEmail: settings.getString("userEmail")
});
purities = new observableArrayModule.ObservableArray();
page.bindingContext = purityVM;
prodSearchCriteria = page.navigationContext;
purityVM.set("purities", purities);
console.log(prodSearchCriteria);
http.request({
url: config.apiUrl+"purities.php",
method: "POST",
headers: { "Content-Type": "application/json" },
content: JSON.stringify({
auth: config.apiAuth,
category: prodSearchCriteria.category
})
}).then(function(request){
var response = JSON.parse(request.content);
for (var i = 0; i < response.data.length; i++) {
purities.push({
id: response.data[i].id,
name: response.data[i].name,
image: config.siteUrl+"/img/icons/"+response.data[i].icon,
width: boxWidth
});
}
// console.log(purities);
}, function(error){
console.log(JSON.stringify(error));
});
selectionList = view.getViewById(page, "selectionList");
}
firstload=false;
}
Whip
Did you verify this is a real problem by searching the NativeScript Forum?
Yes. THe issue is similar to #350 and #271 but both says the issue has been fixed already
Tell us about the problem
I have a page where I display a list in grid view and multiple selections. User can select desired items and press Next and the ids of the selected items are passed to the next page as context. Now when you press back button the app crashes with following error
If I don't select an item and press Next, then I come back, the page is fine. It seems like RadListView is trying to select the items even before they're loaded.
Which platform(s) does your issue occur on?
Android
Please provide the following version numbers that your issue occurs with:
Please tell us how to recreate the issue in as much detail as possible.
Is there code involved? If so, please share the minimal amount of code needed to recreate the problem.
XML
JS
Please use arbitrary values where there isn't one available. Like I can't share the
config.apiAuthhere