dynamic

问题 I have created a Spinner that is populated with an ArrayList . I want to dynamically add values to the ArrayList , so the the Spinner populates dynamically. However, when I try to add values to my ArrayList , I get a NullPointerException . What am I missing? Do I have to reset the adapter before amending the ArrayList ? Here is my code: My spinner, arraylist, and adapter: deleteselection = (Spinner)view.findViewById(R.id.deletespinner); portfoliosdelete = new ArrayList<String>();

问题 I am looping through a range of cells to check if a value is 0. My logic is if cell value is zero, then cell value is the previous cells value. If that previous cell is also zero, then it is the next cell's value. But I said what if the last cell or first cell is zero? I need to check that too because if it is the first cell or last, then the loop fails. My question is, what should the code be to pass through the last row as an address. I know the last row, but I do not know how to write it

问题 I want to design a website which shows the simple search results with Isotope appearance. I have a text input and get the query from the user and retrieve the search results from my server. So, by changing the query, my data and filtering options change. I don't know how to manage this dynamic data with Isotope . After each query and data change, when I set the new isotope properties and filters in $container.isotope , the data blocks become invisible and Isotope functions, like animation and

问题 I have documents with the following link.* dynamic fields: "docs": [{ "id":"id1" "link.1.text":"mytext" "link.1.nImg":1 "link.2.text":"mytext" "link.2.nImg":2 }, { "id":"id2" "link.1.text":"mytext" "link.1.nImg":1 "link.2.text":"mytext" "link.2.nImg":1 }] How can I get a query like : link.*.text:"mytext" or link.*.nImg:2 ? 回答1: You couldn't do that in Solr. Dynamic fields allow Solr to index fields that you did not explicitly define in your schema. This is useful if you discover you have

问题 So I've got some code - I'd like to compile the string 'temp' then execute it, then change the string, recompile and execute. Problem is that currently it's just executing the first bit of code first. I expect: This is in another java file How about now? And I get: This is in another java file This is in another java file Full code follows, any help appreciated. import java.io.IOException; import java.util.Arrays; import javax.tools.DiagnosticCollector; import javax.tools.JavaCompiler; import

问题 Hi all I am trying to do a very simple dynamic query which will select a column dynamically i.e. selection of column would depend upon another query.So, I would select col X if condition 1 and Y if condition 2. So I tried using query.Select(colname) using the extension method also tried using Func<> but I am not sure how to go about doing this. I have read about dynamic extension for linq and also reflection but with reflection to the GetValue function does not return value for my column in

问题 My problem is that my directive doesnt show the template. I added a html tag with specific name in my controller to the dom via "$sce.trustAsHtml(taskDirective)" and "$compile(taskDirective)($scope)" . The controller-function inside the directive is called. But the template is not showing up. Im using the $stateProvider , which calls the "TaskDetailCtrl" with the certain HTML. Anybody can help? Thank you!+ Controller: app.controller("TaskDetailCtrl", function ($scope, $state, $stateParams,

问题 I'm trying to setup a widget framework using jQuery, so I need to import java script by parsing the widget's xhtml and including in the framework page. The problem is that this may lead to pollution of the namespace. Is it possible to load java script into a namespace at runtime? Perhaps there is some better method that I'm overlooking? Thanks, Pete 回答1: AS Josh Stodola mentioned creating the variable at runtime isn't the problem var holdsWidgetUUID = "widgetUUIDValue"; eval(holdsWidgetUUID +

问题 I would like to create an install.php for my tiny cms but i have a lot of questions. -How to display install.php before the index.php? -I would like to create steps, like in a shopping cart. The steps are: step1: (hi! are you ready? -submit-) if step1 is completed->step2:form(database-host-user-pass)->saves config.php and creates the tables if step2 is completed->step3:(admin username,admin pass,page title)->insert into admin if step3 is completed->step4:the install.php deletes itself. -Is it

问题 I have a struct like this: struct Key_Node { int key; struct Package_Node *next_package; }; I will create a dynamic array " struct Key_Node arrayMain[X] " where the value of X will be entered by the user and depending on it I will create the dynamic array. Since I don't know the size of the array, obviously I can not point each pointer of the dynamic array to something. So what will I have to do here? I have another struct that looks like this. struct Package_Node { int bar_code; float