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jwatt222  
#1 Posted : Tuesday, February 20, 2018 10:18:32 AM(UTC)
jwatt222

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I am working on a weather app with both current and a 5 day forecast. I am using a HTTP request with json because accuweather does not seem to support xml.

I need guidance on where and how to approach showing the icons for the five day forecast.

I am receiving all the data I need in the request but having an issue with loading the images for the 5 day forecast.

accuweather does not allow pulling the images through a url so I downloaded them and converted them to base64.I then loaded them into an xml file. when I make a request the icon only shows a number for the icon. Therefore I cannot use it as a source for the image.

I am sure that I am approaching this wrong but have been searching the manual and researching the internet for days. I have also asked accuweather for help but no luck there either.

To get the current weather image I can match the number to the image easily because it is only a single icon. I am using: $XML6/Weather/WeatherCurrent/weather[ @current = $HTTP2/json/item/WeatherIcon]/@image in the image source

My problem is when trying to match the 5 icons from the 5 day forecast, I can only get the first or the last which shows for all 5 images. I have tried several different approaches without success. I assume that I am leaving something out that will perform the function for every item and return the image but cannot figure out what that is.

in the image source
$XML6/Weather/WeatherForecast/weather[ @forecast = $HTTP2/json/item/WeatherIcon]/@image gets the last icon

$XML6/Weather/WeatherForecast/weather[ @forecast = $HTTP2/json/item[1]/WeatherIcon]/@image allows me to select the position but still only shows the same icon for all 5 days which is wrong.

In the designer, I have only one item in the tree structure which repeats in the request

File Attachment(s):
2018_02_21_12_13_09.jpg (305kb) downloaded 12 time(s).
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AFC  
#2 Posted : Tuesday, February 20, 2018 2:55:48 PM(UTC)
AFC

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Hello jwatt222!

Without knowing your design (where/how do you want to show the icons), your structure ($XML6) and the accuweather structure ($HTTP2), we just can guess.

E.g. in case you want to show these images inside a table with dynamic rows, the repeating element of the table row will be the XPath context you can use.

In this case something like
Quote:
$XML6/Weather/WeatherForecast/weather[ @forecast = ./WeatherIcon]/@image

could help (if $HTTP2/json/item is the repeating element).

But as I said - just guessing, so if this does not help, we will need more information or you attach your sample here or even best: send it to our Support team, that they can look into it in detail.

By the way: did you look into our tutorials? The MobileTogether designer comes with some nice image tutorials, like Base64Images.mtd, UserSelectedImages.mtd.

Best regards,
AFC
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jwatt222  
#3 Posted : Tuesday, February 20, 2018 6:00:13 PM(UTC)
jwatt222

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Posts: 69
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Location: Virginia

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AFC, thanks for your response. I tried pasting the required info but it exceeded the allotment for the post. I will try and load the necessary files. I have checked the manual in which I learned to encode the images to base64 and to add them to an xml file. I looked at the flags.mtd file that answered someone elses questions here on the forum but it only used a single image. It did help to get started and gave me the expression that I am using with mods. I have also added a rss news reader before that works fine but I am not pulling images there. This is the first attempt at a json based HTTP request with images. I am receiving the text data for everything with no problems.

This works fine for the single image current weather icon as the base64 image source: $XML6/Weather/WeatherCurrent/weather[ @current = $HTTP2/json/item/WeatherIcon]/@image

However a similiar expression does not work as the base64 image source for the repeating elements.

HTTP/3/json/Daily Forecast/Day/item "is" the repeating element and I am using a table with dynamic rows which includes the image for the WeatherIcon. However,

$XML6/Weather/WeatherForecast/weather[ @forecast = $HTTP3/json/DailyForecast/item/Day/Icon]/@image is only getting the last of the 5 icons and showing it for all 5 forecasted days.

$XML6/Weather/WeatherForecast/weather[ @forecast = $HTTP3/json/DailyForecast/item[1]/Day/Icon]/@image allows me to pick the posion of the repeating element but shows it for all 5 forecasted days.

I also considered a Loop, For, or Let expression but the result was the same or with item type matching errors. (I'm sure I probably screwed that up but that's why I am requesting your help.)
File Attachment(s):
Weather.xml (703kb) downloaded 12 time(s).
HTTP3.json (10kb) downloaded 12 time(s).
jwatt222 attached the following image(s):
truckersweather.PNG
truckersweather-designer.PNG
truckersweather-designer2.PNG
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AFC  
#4 Posted : Wednesday, February 21, 2018 10:30:10 AM(UTC)
AFC

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Hello jwatt222,

You again use the same absolute XPath expressions from your first post but not the relative context node.

Attached is a small sample which reads 5 different forecasts by using
Quote:
$XML6/Weather/WeatherForecast/weather[ @forecast = current()/Day/Icon ]/@image

for the image URL.

Best regards,
AFC
File Attachment(s):
HTTP3.json (28kb) downloaded 11 time(s).
Weather.xml (703kb) downloaded 11 time(s).
RepeatingImages.mtd (44kb) downloaded 11 time(s).
AFC attached the following image(s):
RepeatingImages.png
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thanks 1 user thanked AFC for this useful post.
jwatt222 on 2/21/2018(UTC)
jwatt222  
#5 Posted : Wednesday, February 21, 2018 6:22:39 PM(UTC)
jwatt222

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Location: Virginia

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You are AWESOME! Working fine. See attached image from my tablet.
File Attachment(s):
2018_02_21_12_13_09.jpg (305kb) downloaded 24 time(s).
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jwatt222  
#6 Posted : Wednesday, February 21, 2018 6:29:42 PM(UTC)
jwatt222

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Joined: 5/23/2016(UTC)
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Thanks so much for your help!
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