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  • nested form collection_select new value overwriting previous selected values

    - by bharath
    Nested form <%= nested_form_for(@bill) do |f| %> <p><%= f.link_to_add "Add Product", :bill_line_items %> </p> Partial of bill line items <%= javascript_include_tag 'bill'%> <%= f.hidden_field :bill_id %> <%- prices = Hash[Product.all.map{|p| [p.id, p.price]}].to_json %> <%= f.label :product_id %> <%= f.collection_select :product_id ,Product.all,:id,:name, :class => 'product', :prompt => "Select a Product", input_html: {data: {prices: prices}}%> <br/ > <%= f.label :price, "price"%> <%= f.text_field :price, :size=>20, :class =>"price" %><br/> bill.js jQuery(document).ready(function(){ jQuery('.product').change(function() { var product_id = jQuery(this).val(); var price = eval(jQuery(this).data("prices"))[product_id]; jQuery('.price').val(price); }); }); Rails 3.2 Issue: Second click on Add Product & on selecting the product When we select the second product the price of second product is overwriting on the price of the first selected product. Request help.

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  • Nested Object Forms not working as expected

    - by Craig Walker
    I'm trying to get a nested model forms view working. As far as I can tell I'm doing everything right, but it still does not work. I'm on Rails 3 beta 3. My models are as expected: class Recipe < ActiveRecord::Base has_many :ingredients, :dependent => :destroy accepts_nested_attributes_for :ingredients attr_accessible :name end class Ingredient < ActiveRecord::Base attr_accessible :name, :sort_order, :amount belongs_to :recipe end I can use Recipe.ingredients_attributes= as expected: recipe = Recipe.new recipe.ingredients_attributes = [ {:name=>"flour", :amount=>"1 cup"}, {:name=>"sugar", :amount=>"2 cups"}] recipe.ingredients.size # -> 2; ingredients contains expected instances However, I cannot create new object graphs using a hash of parameters as shown in the documentation: params = { :name => "test", :ingredients_attributes => [ {:name=>"flour", :amount=>"1 cup"}, {:name=>"sugar", :amount=>"2 cups"}] } recipe = Recipe.new(params) recipe.name # -> "test" recipe.ingredients # -> []; no ingredient instances in the collection Is there something I'm doing wrong here? Or is there a problem in the Rails 3 beta?

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  • nested include in php

    - by aeonsleo
    The directory structure: C:/wamp/www/application/model/data_access/data_object.php C:/wamp/www/application/model/users/user.class.php C:/wamp/www/application/controller/projects.php C:/wamp/www/application/controller/links/links.php I have 2 php files data_object.php and user.class.php Now user.class.php has an include statement for data_object.php wchih is relative to user.class.php.These two files are under different directory hierarchy. Now I have to include this user.class.php in various files (like projects.php, links.php-which themselves are under different hierarchy) whenever i want to create a User() object. The problem is the relative path for file inclusion of data_object.php does work for say projects.php but if i open links.php the error message says it could not open file data_object.php in user.class.php. What i think is for relative inclusion of data_object.php it is considering the path of the file in which user.class.php is included. I am facing such problems in more than one scenarios I have to keep my directory structure the way it is but have to find a way to work with nested includes. I used Document root of session it give root path as C:/wamp/www/ i appended the path for data_object.php include but this is not working. (note: the forward slash is present after www) I am currently running on wamp server's localhost but after completion i have to host the solution on a domain. Pls help

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  • MySQL nested set hierarchy with foreign table

    - by Björn
    Hi! I'm using a nested set in a MySQL table to describe a hierarchy of categories, and an additional table describing products. Category table; id name left right Products table; id categoryId name How can I retrieve the full path, containing all parent categories, of a product? I.e.: RootCategory > SubCategory 1 > SubCategory 2 > ... > SubCategory n > Product Say for example that I want to list all products from SubCategory1 and it's sub categories, and with each given Product I want the full tree path to that product - is this possible? This is as far as I've got - but the structure is not quite right... select parent.`name` as name, parent.`id` as id, group_concat(parent.`name` separator '/') as path from categories as node, categories as parent, (select inode.`id` as id, inode.`name` as name from categories as inode, categories as iparent where inode.`lft` between iparent.`lft` and iparent.`rgt` and iparent.`id`=4 /* The category from which to list products */ order by inode.`lft`) as sub where node.`lft` between parent.`lft` and parent.`rgt` and node.`id`=sub.`id` group by sub.`id` order by node.`lft`

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  • Problem with Railscast #197 - Nested Model Form Part 2

    - by sscirrus
    I'm trying to implement Ryan's Railscast #197 in a system with Questions, Answers, and (multiple choice) Options. http://railscasts.com/episodes/197-nested-model-form-part-2. I have successfully implemented the nesting among these forms/partials. The simpler 'check box' way to delete records works properly. The problem occurs when I try to add/delete records. I have copied the code exactly as it appears in his Railscast: #new.html.erb <%= javascript_include_tag :defaults, :cache => true %> <% f.fields_for :in_options do |builder| %> <%= render "option_fields", :f => builder %> <% end %> #_option_fields.html.erb partial <%= f.hidden_field :_destroy %> <%= link_to_function "remove", "remove_fields(this)" %> #application_helper.rb (exact same as #197) def link_to_remove_fields(name, f) f.hidden_field(:_destroy) + link_to_function(name, "remove_fields(this)") end def link_to_add_fields(name, f, association) new_object = f.object.class.reflect_on_association(association).klass.new fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder| render(association.to_s.singularize + "_fields", :f => builder) end link_to_function(name, h("add_fields(this, \"#{association}\", \"#{escape_javascript(fields)}\")")) end #application.js (exact same as #197. I have an Event.addbehavior below this code.) function remove_fields(link) { $(link).previous("input[type=hidden]").value = "1"; $(link).up(".fields").hide(); } function add_fields(link, association, content) { var new_id = new Date().getTime(); var regexp = new RegExp("new_" + association, "g") $(link).up().insert({ before: content.replace(regexp, new_id) }); } 2 problems: When I click on the 'remove' link it doesn't remove - it just shifts the page up or down. When I include link_to_add_fields "Add Answer", f, :answers, I get undefined method `klass' for nil:NilClass. Thanks everyone.

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  • Problem accessing variable in a nested form partial

    - by brad
    I have a nested form in a rails view that is called like this <% f.fields_for :invoice_item_numbers do |item_no_form| %> <%= render 'invoice_item_number', :f => item_no_form %> <% end %> and the partial (_invoice_item_number.html.erb) looks like this <div class='invoice_item_numbers'> <% if f.object.new_record? %> <li><%= f.label :item_number %><%= f.text_field :item_number %> <%= link_to_function "remove", "$(this).parent().remove()", :class => 'remove_link' %></li> <% else %> <li class="inline"><%= f.label :item_number %><%= f.text_field :item_number %> </li><li class="inline"><%= f.label :description %><%= invoice_item_number.description %></li><li><%= f.label :amount %><%= f.text_field :amount %> <%= f.check_box '_destroy', :class => 'remove_checkbox' %> <%= f.label '_destroy', 'remove', :class => 'remove_label' %></li> <% end %> </div> This fails with the error message undefined method `description' for nil:NilClass Why does invoice_item_number return a nil object in this partial? It is obviously being defined somehow because if I change it to something else (e.g. item_number.description then the error message becomes undefined local variable or methoditem_number' for #instead. The invoice_item_number object that is being displayed by this partial is being used perfectly well by the form helpers as<%= f.text_field :item_number %and<% f.text_field :amount %both work perfectly well. I have tried a number of solutions such as using@invoice_item_number` and explicitly defining an object in the render method but these have not worked. Presumably there is a very simple answer to this.

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  • Is nested synchronized block necessary?

    - by Dan
    I am writing a multithreaded program and I have a method that has a nested synchronized blocks and I was wondering if I need the inner sync or if just the outer sync is good enough. public class Tester { private BlockingQueue<Ticket> q = new LinkedBlockingQueue<>(); private ArrayList<Long> list = new ArrayList<>(); public void acceptTicket(Ticket p) { try { synchronized (q) { q.put(p); synchronized (list) { if (list.size() < 5) { list.add(p.getSize()); } else { list.remove(0); list.add(p.getSize()); } } } } catch (InterruptedException ex) { Logger.getLogger(Consumer.class.getName()).log(Level.SEVERE, null, ex); } } } EDIT: This isn't a complete class as I am still working on it. But essentially I am trying to emulate a ticket machine. The ticket machine maintains a list of tickets in the BlockingQueue q. Whenever a client adds a ticket to the machine, the machine also keeps track of the price of the last 5 tickets (ArrayList list)

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  • How to render all records from a nested set into a real html tree

    - by Christoph Schiessl
    I'm using the awesome_nested_set plugin in my Rails project. I have two models that look like this (simplified): class Customer < ActiveRecord::Base has_many :categories end class Category < ActiveRecord::Base belongs_to :customer # Columns in the categories table: lft, rgt and parent_id acts_as_nested_set :scope => :customer_id validates_presence_of :name # Further validations... end The tree in the database is constructed as expected. All the values of parent_id, lft and rgt are correct. The tree has multiple root nodes (which is of course allowed in awesome_nested_set). Now, I want to render all categories of a given customer in a correctly sorted tree like structure: for example nested <ul> tags. This wouldn't be too difficult but I need it to be efficient (the less sql queries the better). Update: Figured out that it is possible to calculate the number of children for any given Node in the tree without further SQL queries: number_of_children = (node.rgt - node.lft - 1)/2. This doesn't solve the problem but it may prove to be helpful.

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  • Nested IF statements in Excel [Over the 7 allowed limit]

    - by Alks
    hey guys, i am trying to create a spreadsheet which automagically gives a grade to a student based on their marks they got. I've apparently hit excels nested IF statement limit which is 7. here's my if statement: =IF(O5>0.895,"A+",IF(O5>0.845,"A",IF(O5>0.795,"A-",IF(O5>0.745,"B+",IF(O5>0.695,"B",IF(O5>0.645,"B-",IF(O5>0.595,"C+",IF(O5>0.545,"C","D")))))))) I was reading online that I could create a VBA script and assign it that, but I dont know anything about VBA....so if someone could help me write a VBA for this, would be awesome. Its still mising the C- grade and anything lower should be awarded a D mark. This is the grading scheme I am trying to create...: A+ 89.500 - 100.000 Pass with Distinction A 84.500 - 89.490 Pass with Distinction A- 79.500 - 84.490 Pass with Distinction B+ 74.500 - 79.490 Pass with Merit B 69.500 - 74.490 Pass with Merit B- 64.500 - 69.490 Pass with Merit C+ 59.500 - 64.490 Pass C 54.500 - 59.490 Pass C- 49.500 - 54.490 Pass D 0.000 - 49.490 Specified Fail I wouldn't mind going down the VBA route, however my understanding of VB language is absolutely minimal (don't like it)...if this gets too tedious, I was thinking to create a small php/mysql application instead. Cheers :)

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  • Use jQuery's dataTable plugin with a nested Ajax call

    - by mrr0ng
    I am trying to use a nested ajax call to populate a table, and once the table is built, use jQuery's dataTable plugin to pretty it up. The problem I am running into is an order of operations question. When do I call the dataTable function so that I can be assured that the table is built AFTER the values are populated? When I try the following code, the dataTable is created before the rows are built. <script type="text/javascript"> $(document).ready(function() { $.ajax({ url:"http://totalrockregistration.com/feeds/bands.php", dataType:"jsonp", success: function(jsonData){ $.each(jsonData.bands, function(i,bands){ if (bands.barID == "<?php echo $_GET["barID"]; ?>"){ var songIdFromBandJson = bands.song; var bandNameFromJson = bands.name; var bandScoreFromJson = bands.score; $.ajax({ url:"http://totalrockregistration.com/feeds/songs.php", dataType:"jsonp", success: function(songsJsonData){ $.each(songsJsonData.songs, function(i,songs){ if (songIdFromBandJson == songs.id){ var songName=(songs.name); $("#leaderBoardTable tbody").append("<tr><td>"+bandNameFromJson+"</td><td>"+bandScoreFromJson+"</td><td>"+songName+"</td></tr>"); } }); } }); } }); makeLeaderTable(); }, }); function makeLeaderTable(){ $('#leaderBoardTable').dataTable({ "aaSorting": [[ 1, "desc" ]], "iDisplayLength": 50 }); } }); </script>

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  • Sorting nested set by name while keep depth integrity

    - by wb
    I'm using the nested set model that'll later be used to build a sitemap for my web site. This is my table structure. create table departments ( id int identity(0, 1) primary key , lft int , rgt int , name nvarchar(60) ); insert into departments (lft, rgt, name) values (1, 10, 'departments'); insert into departments (lft, rgt, name) values (2, 3, 'd'); insert into departments (lft, rgt, name) values (4, 9, 'a'); insert into departments (lft, rgt, name) values (5, 6, 'b'); insert into departments (lft, rgt, name) values (7, 8, 'c'); How can I sort by depth as well as name? I can do select replicate('----', count(parent.name) - 1) + ' ' + node.name , count(parent.name) - 1 as depth , node.lft from departments node , departments parent where node.lft between parent.lft and parent.rgt group by node.name, node.lft order by depth asc, node.name asc; However, that does not match children with their parent for some reason. department lft rgt --------------------------- departments 0 1 ---- a 1 4 ---- d 1 2 -------- b 2 5 -------- c 2 7 As you can see, department 'd' has department 'a's children! Thank you.

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  • Rails Nested Attributes Doesn't Insert ID Correctly

    - by MunkiPhD
    I'm attempting to edit a model's nested attributes, much as outline here, replicated here: <%= form_for @person do |person_form| %> <%= person_form.text_field :name %> <% for address in @person.addresses %> <%= person_form.fields_for address, :index => address do |address_form|%> <%= address_form.text_field :city %> <% end %> <% end %> <% end %> In my code, I have the following: <%= form_for(@meal) do |f| %> <!-- some other stuff that's irrelevant... --> <% for subitem in @meal.meal_line_items %> <%= f.fields_for subitem, :index => subitem do |line_item_form| %> <%= line_item_form.label :servings %><br/> <%= line_item_form.text_field :servings %><br/> <%= line_item_form.label :food_id %><br/> <%= line_item_form.text_field :food_id %><br/> <% end %> <% end %> <%= f.submit %> <% end %> This works great, except, when I look at the HTML, it's creating the inputs that look like the following, failing to input the correct id and instead placing the memory representation(?) of the model: <input type="text" value="2" size="30" name="meal[meal_line_item][#<MealLineItem:0x00000005c5d618>][servings]" id="meal_meal_line_item_#<MealLineItem:0x00000005c5d618>_servings">

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  • ListView setOnItemClickListener and setOnItemSelectedListener to store the Selected Item Index

    - by Christophe
    Hi all, I have read on this site that it is necessary to customize the setOnItemSelectedListener and setOnItemClickListener of a ListView if we want to know the Index of the SelectedItem (.getSelectedItemPosition()). So that is what I do but it does not stores the position of the SekectedItem, instead i have always -1... What I want to do is just to give the user a way to delete items from a list by selected and Item and Clicking a button. See the code below : listViewPeople.setOnItemClickListener(new ListView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> a, View v, int i, long l) { try { // Remembers the selected Index listViewPeopleId = listViewPeople.getSelectedItemPosition(); } catch(Exception e) { System.out.println("Nay, cannot get the selected index"); } } }); listViewPeople.setOnItemSelectedListener(new ListView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> a, View v, int i, long l) { try { // Remembers the selected Index listViewPeopleId = listViewPeople.getSelectedItemPosition(); System.out.println("Yay, set the selected index " + listViewPeopleId); } catch(Exception e) { System.out.println("Nay, cannot get the selected index " + listViewPeopleId); } } @Override public void onNothingSelected(AdapterView<?> arg0) { try { // Remembers nothing selected listViewPeopleId = -1; System.out.println("Yay, set that nothing is selected " + listViewPeopleId); } catch(Exception e) { System.out.println("Nay, cannot set that nothing is selected " + listViewPeopleId); } } }); What's wrong?? Thank you for your help! Christophe

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  • IllegalArgumentException: width and height must be > 0 during zoomOut in Google MapView

    - by Janusz
    I'm trying to zoom in on a Google MapView on step in the oncreateMethod of my Activity. Everytime I try to zoom the map via the mapController I get an IllegalArgumentException: 04-15 10:16:51.012: ERROR/AndroidRuntime(528): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.innomos.couponimo.android.client/com.innomos.couponimo.android.client.ui.showstores.StoreMap}: java.lang.IllegalArgumentException: width and height must be > 0 This Exception is thrown if I call the zoomOut or zoomIn function of MapController. Sadly the zoomIn function I'm using does not take any arguments. The onCreateMethod where I'm calling the zoom functions looks like this: mapView = (MapView) findViewById(R.id.map); mapView.setBuiltInZoomControls(true); MapController mapController = mapView.getController(); mapController.zoomIn(); I'm a little bit at loss here because I'm doing nothing special. The whole stacktrace is: 04-15 10:16:51.012: ERROR/AndroidRuntime(528): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.innomos.couponimo.android.client/com.innomos.couponimo.android.client.ui.showstores.StoreMap}: java.lang.IllegalArgumentException: width and height must be > 0 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.os.Handler.dispatchMessage(Handler.java:99) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.os.Looper.loop(Looper.java:123) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread.main(ActivityThread.java:4203) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at java.lang.reflect.Method.invokeNative(Native Method) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at java.lang.reflect.Method.invoke(Method.java:521) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at dalvik.system.NativeStart.main(Native Method) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): Caused by: java.lang.IllegalArgumentException: width and height must be > 0 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.graphics.Bitmap.nativeCreate(Native Method) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.graphics.Bitmap.createBitmap(Bitmap.java:468) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.ZoomHelper.createSnapshot(ZoomHelper.java:305) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.ZoomHelper.doZoom(ZoomHelper.java:137) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.ZoomHelper.doZoom(ZoomHelper.java:126) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.MapView.doZoom(MapView.java:1459) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.MapView.doZoom(MapView.java:1468) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.google.android.maps.MapController.zoomIn(MapController.java:427) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at com.innomos.couponimo.android.client.ui.showstores.StoreMap.onCreate(StoreMap.java:58) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 04-15 10:16:51.012: ERROR/AndroidRuntime(528): ... 11 more

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  • implement a coverflow UI in an Android web application

    - by ravidor
    I am trying to build a coverflow UI on an Android web application using HTML,CSS, JavaScript and some images. CSS 3D transforms, which are supported in Safari sine 2009 and on the iPhone since version 2.0, is not supported well on the Android. worse then that, the implementation is buggy on Android 2.1 and Android 2.2, and in each version in a different way. Any idea how can I build a coverflow UI on an Android web application using HTML,CSS, JavaScript and some images without CSS 3D transforms?

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  • Incorrect Coordinates From getLocationOnScreen/getLocationInWindow

    - by nimph
    A call to getLocationOnScreen() or getLocationInWindow() both give me a top/Y coordinate that is about ~30px (status/notifications bar's height) too far down. The left/X coordinate is dead on. As I hinted above, I believe the difference is because of the status/notification bar... I could be wrong. I think I can solve this if I can determine the size of the notification bar but, I'm having trouble doing just that. Any help would be greatly appreciated.

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  • Get checked Listitems from ListView and pass that to another activity

    - by Rajesh Rajaram
    I'm developing a Androidapplication using ListView. ListView have a one file in each and every ListItem. Here, I have set onItemClickin ListView. So, that if user clicks the ListItememail application gets open and attach the particular file in email. Its for the single File, this gets implemented and working fine. Now I want attach the multiple file in email. i.e. the implementing the CheckBoxin each ListItemand checked items have to attached into the Mail. I know its possible because its very similar to the file manager application that checking the multiple file and deleting the all file by clicking the single Button. But don't know how to do.

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  • Why can't we use a Translucent system bars with and ActionBar

    - by Waza_Be
    While updating my apps to Kitkat, I just wanted to give them a gorgeous look on KitKat using the Translucent property: Translucent system bars You can now make the system bars partially translucent with new themes, Theme.Holo.NoActionBar.TranslucentDecor and Theme.Holo.Light.NoActionBar.TranslucentDecor. By enabling translucent system bars, your layout will fill the area behind the system bars, so you must also enable [fitsSystemWindows][4] for the portion of your layout that should not be covered by the system bars. My only concern is that I would like to use an ActionBar which sounds the opposite of what Google wants (both theme have NoActionBar: Theme.Holo.NoActionBar.TranslucentDecor Theme.Holo.Light.NoActionBar.TranslucentDecor As I don't plan to use some hacks or tricks to make it work, I just wanted to know if there was some correct way to achieve this or if this would be against Google guidelines.

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  • Using AsyncTask to display data in ListView, but onPostExecute not being called

    - by sumisu
    I made a simple AsyncTask class to display data in ListView with the help of this stackoverflow question. But the AsyncTask onPostExecute is not being called. This is my code: public class Start extends SherlockActivity { // JSON Node names private static final String TAG_ID = "id"; private static final String TAG_NAME = "name"; // category JSONArray JSONArray category = null; private ListView lv; @Override public void onCreate(Bundle savedInstanceState) { setTheme(SampleList.THEME); //Used for theme switching in samples super.onCreate(savedInstanceState); setContentView(R.layout.test); new MyAsyncTask().execute("http://...."); // Launching new screen on Selecting Single ListItem lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // getting values from selected ListItem String name = ((TextView) view.findViewById(R.id.name)).getText().toString(); String cost = ((TextView) view.findViewById(R.id.mail)).getText().toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class); in.putExtra("categoryname", name); System.out.println(cost); in.putExtra("categoryid", cost); startActivity(in); } }); } public class MyAsyncTask extends AsyncTask<String, Void, ArrayList<HashMap<String, String>> > { // Hashmap for ListView ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>(); @Override protected ArrayList<HashMap<String, String>> doInBackground(String... params) { // Creating JSON Parser instance JSONParser jParser = new JSONParser(); // getting JSON string from URL category = jParser.getJSONArrayFromUrl(params[0]); try { // looping through All Contacts for(int i = 0; i < category.length(); i++){ JSONObject c = category.getJSONObject(i); // Storing each json item in variable String id = c.getString(TAG_ID); String name = c.getString(TAG_NAME); // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); // adding each child node to HashMap key => value map.put(TAG_ID, id); map.put(TAG_NAME, name); // adding HashList to ArrayList contactList.add(map); } } catch (JSONException e) { Log.e("log_tag", "Error parsing data "+e.toString()); } return contactList; } @Override protected void onPostExecute(ArrayList<HashMap<String, String>> result) { ListAdapter adapter = new SimpleAdapter(Start.this, result , R.layout.list_item, new String[] { TAG_NAME, TAG_ID }, new int[] { R.id.name, R.id.mail }); // selecting single ListView item lv = (ListView) findViewById(R.id.ListView); lv.setAdapter(adapter); } } } Eclipse: 11-25 11:40:31.896: E/AndroidRuntime(917): java.lang.RuntimeException: Unable to start activity ComponentInfo{de.essentials/de.main.Start}: java.lang.NullPointerException

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  • Passing Activity to non-activity object properly

    - by rayman
    In my app ive got a non-activity object which it's role is being a manager class. many times i need to pass "source activity" to methods as parameter to that manager class in order to make some operations on that activity. for exaple let's assume we have MyActivity which gotta do some toast. so i have this manager class called MyManager, and i have this method in it raiseToast(Activity sourceActivity) { Toast.makeText(sourceActivity, demo, Toast.LENGTH_LONG).show(); } and from Myactivity class we calling that method this way: MyManager manager=new MyManager(); manager.raitetoast(MyActivity.this); it works fine. what I'm asking here, is this a proper way to pass an Activity as parameter to a non-activity object? I'm having a memory leaks on real device(not the emulator), I wonder if this could also causing any reason for that? Thanks Idan.

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  • KitchenSink tools/apkbuilder error when trying to run for Android

    - by Lukasz
    When I run KitchenSink example project on iPhone emulator everything is OK, but trying to launch for Android emulator produces errors: [ERROR] /Users/lukasz/Android/android-sdk-mac_x86/tools/apkbuilder [ERROR] Failed installing com.appcelerator.kitchensink: pkg: /data/local/tmp/app.apk It happens whatever Androig API I choose (from 1.5 to 2.2 or from APIs 1.5 to APIs 2.2). I am using Titanium Developer 1.2.1, titanium SDK 1.4.1.11 Where is the problem? As far as I can see Android SDKs and platforms work correctly because I can successfully compile Android projects from diffrent IDE (Netbeans).

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  • Getting really weird long Contact Group names

    - by Pentium10
    When looking at the Contact Groups on Google Contacts or in the People application of my HTC Legend phone, I get the groups names ok eg: Friends, Family, VIP, Favorite etc... But in my application I get really wrong names such as "Family" became "System Group: Family" "Friends" became "System Group: Friends" "Favorite" became "Favorite_5656100000000_3245664334564" I use the below code to read these values: public Cursor getFromSystem() { // Get the base URI for the People table in the Contacts content // provider. Uri contacts = ContactsContract.Groups.CONTENT_URI; // Make the query. ContentResolver cr = ctx.getContentResolver(); // Form an array specifying which columns to return. String[] projection = new String[] { ContactsContract.Groups._ID, ContactsContract.Groups.TITLE, ContactsContract.Groups.NOTES }; Cursor managedCursor = cr.query(contacts, projection, ContactsContract.Groups.DELETED + "=0", null, ContactsContract.Groups.TITLE + " COLLATE LOCALIZED ASC"); return managedCursor; } What I am missing?

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  • Possible to do rounded corners in custom Progressbar progressDrawable?

    - by b-ryce
    I have a progress bar that is supposed to look like the attached image: And I've made it a long way. I'm very close the only part that isn't working is the rounded corners for the progressDrawable. Here is what mine looks like. (Notice, circled in red, that the fill inside the white outline does not have rounded corners): So, I've found a couple of ways to make this work when the progress bar is colored in with a shape, gradient, or color. BUT, I can't get it with an image as the progressDrawable. Here is my class that extends ProgressBar public class RoundedProgressBar extends ProgressBar{ private Paint paint; public RoundedProgressBar(Context context) { super(context); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs) { super(context, attrs); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setup(); ; } protected void setup() { paint = new Paint(); } @Override protected synchronized void onDraw(Canvas canvas) { // First draw the regular progress bar, then custom draw our text super.onDraw(canvas); paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.STROKE); RectF r = new RectF(0,0,getWidth()-1,getHeight()-1); canvas.drawRoundRect(r,getHeight()/2,getHeight()/2, paint); } } Here is my selector: <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@android:id/background" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/progress" android:drawable="@drawable/slider_track_progress" /> </layer-list> Here are the images used in the selector: slider_track- slider_track_progress- Here is where I embed my progressbar in the layout for my activity <com.android.component.RoundedProgressBar android:id="@+id/player_hp_bar" android:layout_width="fill_parent" android:layout_height="36dip" android:layout_marginLeft="30dip" android:layout_marginRight="30dip" android:max="100" style="?android:attr/progressBarStyleHorizontal" android:progressDrawable="@drawable/slider_layer_list" android:progress="20" android:maxHeight="12dip" android:minHeight="12dip" /> Anyone know how to make this work?

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  • How do i close the alert dialog that displays custom view

    - by Asdfg
    I have an activity named MainActivity which has a button. On click of that button i am displaying an AlertDialog which contains a custom view named ChildWindow.xml. That custom view has multiple textboxes and a OK button. On click of the OK button, i am calling a method of MainActivity. I am able to access the ChildWindow here as view.getRootView().findViewById(R.id.txtFirstName); Once the user clicks on the OK button, i have to close the alert dialog which i am able to do as view.getRootView().setVisibility(View.GONE); My problem is even though i have closed the the ChildWindow in the above statement, i am able to get reference to the textbox in the next line which means AlertDialog is closed but child window is still there. This is how the OK button click looks like: This works as expected: EditText tb = (EditText) view.getRootView().findViewById(R.id.txtFirstName); Toast toast = Toast.makeText(getApplicationContext(), tb.getText(), Toast.LENGTH_LONG); toast.show(); view.getRootView().setVisibility(View.GONE); This should not work as i am closing the alert dialog and then getting the reference of the textbox but this works too. view.getRootView().setVisibility(View.GONE); EditText tb = (EditText) view.getRootView().findViewById(R.id.txtFirstName); Toast toast = Toast.makeText(getApplicationContext(), tb.getText(), Toast.LENGTH_LONG); toast.show(); I think i am closing the alert dialog but i am not destroying it from the memory. Can someone point me out what am i missing here?

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