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ImageCell not displaying image loaded from a URI


Creating a byte array from a streamHow do I update the GUI from another thread?MetadataException: Unable to load the specified metadata resourceGet int value from enum in C#Get property value from string using reflection in C#How do I remedy the “The breakpoint will not currently be hit. No symbols have been loaded for this document.” warning?Call one constructor from anotherWhy not inherit from List<T>?How to load an image to a ImageCell on Xamarin.Forms?C# & XAML - Display JSON in ListView from Wunderground API






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








0















I am coding an app that pulls JSON data from FLickr and displays an list of image cells. The app gives no errors and allows a search to be entered and pulls the data. The title data displays without issue but the image remains blank. I learned Xamarin years ago in college before all the updates and I am having trouble sorting out this issue. I can't seem to find information on how to fix this problem.



<SearchBar x:Name="Searchbar" Placeholder="Search" TextChanged="
<ScrollView>
<ListView x:Name="listView">
<ListView.ItemTemplate>
<DataTemplate>
<ImageCell Height="50"
Text="Binding title"
ImageSource="Binding url"
Tapped="ImageCell_Tapped">
</ImageCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollView>


using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using System.Collections.ObjectModel;
using Android.Graphics;

namespace InvestCloudChallenge


public partial class MainPage : ContentPage

string searchText;
HttpClient myClient = new HttpClient();
string APIKey = "api-key here";
string url = "https://api.flickr.com/services/rest/?
method=flickr.photos.search" +
"&api_key=0" +
"&text=1" +
"&format=json&nojsoncallback=1";
string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";
IList<Photo> imageList = new ObservableCollection<Photo>();

public MainPage()

InitializeComponent();


private async void updateList()

imageList.Clear();
var completeUrl = string.Format(url,APIKey,searchText);
var results = await myClient.GetStringAsync(completeUrl);

PhotoData apidata = JsonConvert.DeserializeObject<PhotoData>
(results);

if (apidata.stat == "ok")

foreach (Photo data in apidata.photos.photo)

Photo myPhoto = new Photo()

title = data.title,
url = new Uri(string.Format(photoUrl, data.farm,
data.server, data.id, data.secret)),
;

imageList.Add(myPhoto);

listView.ItemsSource = imageList;



private void OnTextChanged(object sender,TextChangedEventArgs
eventArgs)

if (Searchbar?.Text != "")

searchText = Searchbar.Text.ToString();

updateList();



public class Photo

public string id get; set;
public string owner get; set;
public string secret get; set;
public string server get; set;
public int farm get; set;
public string title get; set;
public int ispublic get; set;
public int isfriend get; set;
public int isfamily get; set;
public Uri url get; set;


public class Photos

public int page get; set;
public int pages get; set;
public int perpage get; set;
public string total get; set;
public List<Photo> photo get; set;


public class PhotoData

public Photos photos get; set;
public string stat get; set;












share|improve this question



















  • 1





    have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

    – Jason
    Mar 24 at 20:04












  • Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

    – Chris Jacobson
    Mar 24 at 20:47












  • that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

    – Jason
    Mar 24 at 20:51











  • It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

    – Chris Jacobson
    Mar 24 at 20:56











  • staticfliCkr.com - you left out thee second "C"

    – Jason
    Mar 24 at 22:12


















0















I am coding an app that pulls JSON data from FLickr and displays an list of image cells. The app gives no errors and allows a search to be entered and pulls the data. The title data displays without issue but the image remains blank. I learned Xamarin years ago in college before all the updates and I am having trouble sorting out this issue. I can't seem to find information on how to fix this problem.



<SearchBar x:Name="Searchbar" Placeholder="Search" TextChanged="
<ScrollView>
<ListView x:Name="listView">
<ListView.ItemTemplate>
<DataTemplate>
<ImageCell Height="50"
Text="Binding title"
ImageSource="Binding url"
Tapped="ImageCell_Tapped">
</ImageCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollView>


using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using System.Collections.ObjectModel;
using Android.Graphics;

namespace InvestCloudChallenge


public partial class MainPage : ContentPage

string searchText;
HttpClient myClient = new HttpClient();
string APIKey = "api-key here";
string url = "https://api.flickr.com/services/rest/?
method=flickr.photos.search" +
"&api_key=0" +
"&text=1" +
"&format=json&nojsoncallback=1";
string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";
IList<Photo> imageList = new ObservableCollection<Photo>();

public MainPage()

InitializeComponent();


private async void updateList()

imageList.Clear();
var completeUrl = string.Format(url,APIKey,searchText);
var results = await myClient.GetStringAsync(completeUrl);

PhotoData apidata = JsonConvert.DeserializeObject<PhotoData>
(results);

if (apidata.stat == "ok")

foreach (Photo data in apidata.photos.photo)

Photo myPhoto = new Photo()

title = data.title,
url = new Uri(string.Format(photoUrl, data.farm,
data.server, data.id, data.secret)),
;

imageList.Add(myPhoto);

listView.ItemsSource = imageList;



private void OnTextChanged(object sender,TextChangedEventArgs
eventArgs)

if (Searchbar?.Text != "")

searchText = Searchbar.Text.ToString();

updateList();



public class Photo

public string id get; set;
public string owner get; set;
public string secret get; set;
public string server get; set;
public int farm get; set;
public string title get; set;
public int ispublic get; set;
public int isfriend get; set;
public int isfamily get; set;
public Uri url get; set;


public class Photos

public int page get; set;
public int pages get; set;
public int perpage get; set;
public string total get; set;
public List<Photo> photo get; set;


public class PhotoData

public Photos photos get; set;
public string stat get; set;












share|improve this question



















  • 1





    have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

    – Jason
    Mar 24 at 20:04












  • Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

    – Chris Jacobson
    Mar 24 at 20:47












  • that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

    – Jason
    Mar 24 at 20:51











  • It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

    – Chris Jacobson
    Mar 24 at 20:56











  • staticfliCkr.com - you left out thee second "C"

    – Jason
    Mar 24 at 22:12














0












0








0








I am coding an app that pulls JSON data from FLickr and displays an list of image cells. The app gives no errors and allows a search to be entered and pulls the data. The title data displays without issue but the image remains blank. I learned Xamarin years ago in college before all the updates and I am having trouble sorting out this issue. I can't seem to find information on how to fix this problem.



<SearchBar x:Name="Searchbar" Placeholder="Search" TextChanged="
<ScrollView>
<ListView x:Name="listView">
<ListView.ItemTemplate>
<DataTemplate>
<ImageCell Height="50"
Text="Binding title"
ImageSource="Binding url"
Tapped="ImageCell_Tapped">
</ImageCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollView>


using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using System.Collections.ObjectModel;
using Android.Graphics;

namespace InvestCloudChallenge


public partial class MainPage : ContentPage

string searchText;
HttpClient myClient = new HttpClient();
string APIKey = "api-key here";
string url = "https://api.flickr.com/services/rest/?
method=flickr.photos.search" +
"&api_key=0" +
"&text=1" +
"&format=json&nojsoncallback=1";
string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";
IList<Photo> imageList = new ObservableCollection<Photo>();

public MainPage()

InitializeComponent();


private async void updateList()

imageList.Clear();
var completeUrl = string.Format(url,APIKey,searchText);
var results = await myClient.GetStringAsync(completeUrl);

PhotoData apidata = JsonConvert.DeserializeObject<PhotoData>
(results);

if (apidata.stat == "ok")

foreach (Photo data in apidata.photos.photo)

Photo myPhoto = new Photo()

title = data.title,
url = new Uri(string.Format(photoUrl, data.farm,
data.server, data.id, data.secret)),
;

imageList.Add(myPhoto);

listView.ItemsSource = imageList;



private void OnTextChanged(object sender,TextChangedEventArgs
eventArgs)

if (Searchbar?.Text != "")

searchText = Searchbar.Text.ToString();

updateList();



public class Photo

public string id get; set;
public string owner get; set;
public string secret get; set;
public string server get; set;
public int farm get; set;
public string title get; set;
public int ispublic get; set;
public int isfriend get; set;
public int isfamily get; set;
public Uri url get; set;


public class Photos

public int page get; set;
public int pages get; set;
public int perpage get; set;
public string total get; set;
public List<Photo> photo get; set;


public class PhotoData

public Photos photos get; set;
public string stat get; set;












share|improve this question
















I am coding an app that pulls JSON data from FLickr and displays an list of image cells. The app gives no errors and allows a search to be entered and pulls the data. The title data displays without issue but the image remains blank. I learned Xamarin years ago in college before all the updates and I am having trouble sorting out this issue. I can't seem to find information on how to fix this problem.



<SearchBar x:Name="Searchbar" Placeholder="Search" TextChanged="
<ScrollView>
<ListView x:Name="listView">
<ListView.ItemTemplate>
<DataTemplate>
<ImageCell Height="50"
Text="Binding title"
ImageSource="Binding url"
Tapped="ImageCell_Tapped">
</ImageCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollView>


using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using System.Collections.ObjectModel;
using Android.Graphics;

namespace InvestCloudChallenge


public partial class MainPage : ContentPage

string searchText;
HttpClient myClient = new HttpClient();
string APIKey = "api-key here";
string url = "https://api.flickr.com/services/rest/?
method=flickr.photos.search" +
"&api_key=0" +
"&text=1" +
"&format=json&nojsoncallback=1";
string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";
IList<Photo> imageList = new ObservableCollection<Photo>();

public MainPage()

InitializeComponent();


private async void updateList()

imageList.Clear();
var completeUrl = string.Format(url,APIKey,searchText);
var results = await myClient.GetStringAsync(completeUrl);

PhotoData apidata = JsonConvert.DeserializeObject<PhotoData>
(results);

if (apidata.stat == "ok")

foreach (Photo data in apidata.photos.photo)

Photo myPhoto = new Photo()

title = data.title,
url = new Uri(string.Format(photoUrl, data.farm,
data.server, data.id, data.secret)),
;

imageList.Add(myPhoto);

listView.ItemsSource = imageList;



private void OnTextChanged(object sender,TextChangedEventArgs
eventArgs)

if (Searchbar?.Text != "")

searchText = Searchbar.Text.ToString();

updateList();



public class Photo

public string id get; set;
public string owner get; set;
public string secret get; set;
public string server get; set;
public int farm get; set;
public string title get; set;
public int ispublic get; set;
public int isfriend get; set;
public int isfamily get; set;
public Uri url get; set;


public class Photos

public int page get; set;
public int pages get; set;
public int perpage get; set;
public string total get; set;
public List<Photo> photo get; set;


public class PhotoData

public Photos photos get; set;
public string stat get; set;









c# xamarin






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 24 at 20:55







Chris Jacobson

















asked Mar 24 at 19:58









Chris JacobsonChris Jacobson

33




33







  • 1





    have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

    – Jason
    Mar 24 at 20:04












  • Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

    – Chris Jacobson
    Mar 24 at 20:47












  • that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

    – Jason
    Mar 24 at 20:51











  • It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

    – Chris Jacobson
    Mar 24 at 20:56











  • staticfliCkr.com - you left out thee second "C"

    – Jason
    Mar 24 at 22:12













  • 1





    have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

    – Jason
    Mar 24 at 20:04












  • Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

    – Chris Jacobson
    Mar 24 at 20:47












  • that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

    – Jason
    Mar 24 at 20:51











  • It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

    – Chris Jacobson
    Mar 24 at 20:56











  • staticfliCkr.com - you left out thee second "C"

    – Jason
    Mar 24 at 22:12








1




1





have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

– Jason
Mar 24 at 20:04






have you checked the application output to see if it is displaying any relevant messages? Have you verified that the urls you're building are valid and work in the device/emulator browser?

– Jason
Mar 24 at 20:04














Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

– Chris Jacobson
Mar 24 at 20:47






Initially i didn't see anything in the output but I did some digging and found this message repeatedly. [0:] ImageLoaderSourceHandler: Could not retrieve image or image data was invalid: Uri: farm8.staticflikr.com/7899/33582703938_1e830f040f_n.jpg I checked the link in the browser of the device and it pulls up the image correctly.

– Chris Jacobson
Mar 24 at 20:47














that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

– Jason
Mar 24 at 20:51





that url doesn't load for me. Is it a private image? Do you have to set any headers or authentication to retrieve it?

– Jason
Mar 24 at 20:51













It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

– Chris Jacobson
Mar 24 at 20:56





It doesn't work in my computer browser either it will only load when i try it in the device browser. I am not sure why.

– Chris Jacobson
Mar 24 at 20:56













staticfliCkr.com - you left out thee second "C"

– Jason
Mar 24 at 22:12






staticfliCkr.com - you left out thee second "C"

– Jason
Mar 24 at 22:12













1 Answer
1






active

oldest

votes


















0














Flickr is misspelt in the url



string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";


should be



string photoUrl = "http://farm0.staticflickr.com/1/2_3_n.jpg";





share|improve this answer























  • *facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

    – Chris Jacobson
    Mar 24 at 22:44











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1 Answer
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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes









0














Flickr is misspelt in the url



string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";


should be



string photoUrl = "http://farm0.staticflickr.com/1/2_3_n.jpg";





share|improve this answer























  • *facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

    – Chris Jacobson
    Mar 24 at 22:44















0














Flickr is misspelt in the url



string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";


should be



string photoUrl = "http://farm0.staticflickr.com/1/2_3_n.jpg";





share|improve this answer























  • *facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

    – Chris Jacobson
    Mar 24 at 22:44













0












0








0







Flickr is misspelt in the url



string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";


should be



string photoUrl = "http://farm0.staticflickr.com/1/2_3_n.jpg";





share|improve this answer













Flickr is misspelt in the url



string photoUrl = "http://farm0.staticflikr.com/1/2_3_n.jpg";


should be



string photoUrl = "http://farm0.staticflickr.com/1/2_3_n.jpg";






share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 24 at 22:13









JasonJason

54.3k1396121




54.3k1396121












  • *facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

    – Chris Jacobson
    Mar 24 at 22:44

















  • *facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

    – Chris Jacobson
    Mar 24 at 22:44
















*facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

– Chris Jacobson
Mar 24 at 22:44





*facepalm.... ugh it's always the tiny typo that causes an issue. Thank you so much for your help!

– Chris Jacobson
Mar 24 at 22:44



















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