Develop Reference

Nativescript - Update dynamic textfield source on click

I just want to ask how can I update the dynamic textfield upon a button click? The textfield is dynamic and the value should come from observable.
Code Behind
var observableModule = require("data/observable");
var source = new observableModule.Observable();
var HomePage = function() {};
HomePage.prototype = new BasePage();
HomePage.prototype.constructor = HomePage;
HomePage.prototype.contentLoaded = function(args) {
var page = args.object;
source.textSource = "sample";
var layout = page.getViewById("stackID");
var textField = new TextFieldModule.TextField();
var textFieldBindingOptions = {
sourceProperty: "textSource",
targetProperty: "text",
twoWay: false
};
textField.bind(textFieldBindingOptions, source);
layout.addChild(textField);
}
HomePage.prototype.buttonTap = function() {
source.textSource = "new word";
source.update();
}
XML
<stack-layout loaded="contentLoaded" id="stackID">
<Button tap="buttonTap" text="Update" />
</stack-layout>

I was able to find on how to update the source on click.
HomePage.prototype.onTap = function() {
source.set("textSource", "new word");
}
Source: http://docs.nativescript.org/cookbook/data/observable

CardIO Plugin - Issues with manually entering Card details on Android

I have implemented the following CardIO plugin in my Ionic App:
https://github.com/card-io/card.io-Cordova-Plugin
This works fine on iOS. However, on Android, when I use the keyboard option in the Camera Screen to manually type in the card details, it first loads the correct screen momentarily, and then jumps back to the first screen (Sign Up screen in this case) of the app. While debugging the app flow, I saw that the callback for Card IO is working fine, but there seems to be an issue when Ionic handles the event.
Any help greatly appreciated!
Following is the code in my controller:
$scope.$on('$ionicView.beforeEnter', function()
{
$scope.creditCardScanning();
}
$scope.creditCardScanning = function(){
var cardIOResponseFields = [
"cardType",
"redactedCardNumber",
"cardNumber",
"expiryMonth",
"expiryYear",
"cvv",
"postalCode"
];
var onCardIOComplete = function(response) {
for (var i = 0; i < cardIOResponseFields.length; i++) {
var field = cardIOResponseFields[i];
}
var cardName = response[cardIOResponseFields[0]].toUpperCase();
for (i = 0; i < $scope.cardtype.length; i++) {
var cardTypeDict = $scope.cardtype[i];
if(cardTypeDict.card_type_name === cardName){
document.getElementById('cardtype').selectedIndex = i;
$scope.params.card_type = cardName;
break;
}
}
document.getElementById('cardNumber').value = response[cardIOResponseFields[2]];
$scope.params.card_number = response[cardIOResponseFields[2]];
var expMonthVal = response[cardIOResponseFields[3]];
for(i=0;i < $scope.expmonth.length; i++) {
var expMonthDict = $scope.expmonth[i];
if(expMonthDict.value === expMonthVal){
document.getElementById('expmonth').selectedIndex = i;
$scope.params.expiration_month = expMonthDict.value;
break;
}
}
for (i = 0; i < $scope.expyear.length; i++) {
var expYearDict = $scope.expyear[i];
if(expYearDict.value === response[cardIOResponseFields[4]]){
document.getElementById('expyear').selectedIndex = i;
$scope.params.expiration_year = response[cardIOResponseFields[4]];
break;
}
}
document.getElementById('cvv').value = response[cardIOResponseFields[5]];
$scope.params.security_code = response[cardIOResponseFields[5]];
};
var onCardIOCancel = function() {
console.log("card.io scan cancelled");
};
var onCardIOCheck = function (canScan) {
console.log("card.io canScan? " + canScan);
var scanBtn = document.getElementById("scanBtn");
if (!canScan) {
console.log("Cannot scan card");
}
scanBtn.onclick = function (e) {
CardIO.scan({
"requireExpiry": true,
"requireCVV": true,
"requirePostalCode": false,
"shows_first_use_alert": true,
"disable_manual_entry_buttons": false
},
onCardIOComplete,
onCardIOCancel
);
}
};
CardIO.canScan(onCardIOCheck);
}
And in my view, I am calling the function to load the next page, once the card details are successfully entered and the "Next" Button is tapped.

Broken image being displayed when using the image path returned from cordovacapture captureimage

I have tried various solutions: $cordovaCapture, $cordovaCamera(DATA_URL can display the picture, but i want file_URI to do the same).
here is my code snippet:
$scope.addImage = function() {
var options = {limit: 1};
$cordovaCapture.captureImage(options).then(function(imageData) {
console.log(imageData);
// var jsonobj=angular.toJson(imageData);
$scope.profile.image = imageData[0];
console.log(angular.toJson(imageData));
console.log($scope.profile.image.localURL);//the path to upload
document.getElementById('myImage').src = "'"+$scope.profile.image.localURL+"'";//have already tried without the quottes
/* window.plugins.Base64.encodeFile($scope.profile.image.localURL,function(base64){ // Encode URI to Base64 needed for contacts plugin
$scope.profile.image.preview = base64;
console.log($scope.profile.image.preview);
});*/
// Success! Image data is here
}, function(err) {
});
i even tried whitelisting certainties in the module as in :
.config( [
'$compileProvider',
function( $compileProvider )
{
$compileProvider.imgSrcSanitizationWhitelist(/^\s*(https?|file|content|blob|cdvfile):|data:image\//);
}
])
It didn't help either. I am testing the project in both device and emulator. I even tried base64 encoding the file from the path. Nothing works as to display the recently taken picture. The path that i retrieve is like this:
cdvfile://localhost/persistent/DCIM/Camera/123123123.jpg

Instead of using file_URI to upload the image. I used data_URL,converted the image to blob and used the cordova-file-transfer plugin to upload the file to the server. In that way, i could use the base64 encoded image on the html side as well as upload at the same time.
$scope.captureImage = function() {
navigator.camera.getPicture(cameraSuccess, cameraError, {
destinationType: Camera.DestinationType.DATA_URL,
correctOrientation: true
});
}
var cameraSuccess = function(imageData) {
$scope.profileImageSource = imageData;
$scope.changeImage = function(base64Data, contentType) {
contentType = contentType || '';
var sliceSize = 512;
var byteCharacters = atob(base64Data);
var bytesLength = byteCharacters.length;
var slicesCount = Math.ceil(bytesLength / sliceSize);
var byteArrays = new Array(slicesCount);
for (var sliceIndex = 0; sliceIndex < slicesCount; ++sliceIndex) {
var begin = sliceIndex * sliceSize;
var end = Math.min(begin + sliceSize, bytesLength);
var bytes = new Array(end - begin);
for (var offset = begin, i = 0; offset < end; ++i, ++offset) {
bytes[i] = byteCharacters[offset].charCodeAt(0);
}
byteArrays[sliceIndex] = new Uint8Array(bytes);
}
return new Blob(byteArrays, {
type: contentType
});
}
$scope.picture = $scope.changeImage(imageData, 'image/png');
$scope.$digest();
}
HTML:
<img ng-src="data:image/gif;base64,{{profileImageSource}}">

How to create a OData List?

I want to create a OList, so that every position opened a new OList if I tap on it. At this moment I have following code:
function readCustomerSuccessCallback(data, response) {
var citems = [];
for (var i = 0; i < data.results.length; i++) {
var citem = new sap.m.StandardListItem(
{
type: "Active",
tap : readProducts(data.results[i].STATION_ID),
title: data.results[i].CUSTOMER_NAME,
description: data.results[i].STATION_ID
});
citems.push(citem);
}
var oList = new sap.m.List({
headerText : "Customers",
setGrowingScrollToLoad: true,
items : citems,
press: function(e) {
console.log(oList.getSelectedItems());
}
});
oList.placeAt("content"); // place model onto UI
}
function readProducts(category) {
console.log("read request started");
startTime = new Date();
if (!haveAppId()) {
return;
}
sURL = myUrl;
var oHeaders = {};
oHeaders['Authorization'] = authStr;
//oHeaders['X-SMP-APPCID'] = appCID; //this header is provided by the logon plugin
var request = {
headers : oHeaders,
requestUri : sURL,
method : "GET"
};
OData.read(request, readProductsSuccessCallback, errorCallback);
}
The function read CustomerSuccesCAllback creates a OList,and if I tap on a field of this list, I want that a new List shows up. For the second step is the function readproducts responsible.
With this code it doesnt work. It shows me not the customers, but only theyre details.
Has anybody an idea?

Change in readCustomerSuccessCallback:
tap: function(e){
readProducts(this.getDescription),
}
//this will stop invoking the function while defining your items

Highlighting a street on google map in android

Is it possible in android to highlight a street on google map as the user taps on the
street? Currently I am working on an app which would identify the streets where a parking
slot is available.

This fiddle could help:
// init map
var myOptions = {
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// init directions service
var dirService = new google.maps.DirectionsService();
var dirRenderer = new google.maps.DirectionsRenderer({suppressMarkers: true});
dirRenderer.setMap(map);
// highlight a street
var request = {
origin: "48.1252,11.5407",
destination: "48.13376,11.5535",
//waypoints: [{location:"48.12449,11.5536"}, {location:"48.12515,11.5569"}],
travelMode: google.maps.TravelMode.DRIVING
};
dirService.route(request, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
dirRenderer.setDirections(result);
}
});
http://jsfiddle.net/HG7SV/15/
Additional options:
https://developers.google.com/maps/documentation/javascript/directions