I want to get some values to the picker dynamically. Statically it is performing well. But when I want to add picker row dynamically from calling web service, there is an occurrence of NSRangeException. Whether the array having data and I am able to alert that data. I am using Titanium SDK for this iphone application.
if(gameTypeName.length>0){
alert(gameType.length);
picker.add(gameTypeName);
}
The array is creating as:
var typeName = college[j].GameTypeName;
gameTypeName.push(Titanium.UI.createPickerRow({title:typeName}));
Whether it is working fine with static data as:
var picker_data = [
Titanium.UI.createPickerRow({title:'Title 1',value:'1'}),
Titanium.UI.createPickerRow({title:'Title 2',value:'2'})
];
picker.add(picker_data);
Believe it or not, the Picker doesn't have a "Value" property.
You can use pickerView. But, easy to use Table View. you set array data in you TableView (tableView.data =;).
and for get value
tableView.addEventListener('click',function(e){
// own your requirement
Ti.API.log(e);
});
I think this is easy to use and good looking.
If, you want to show and hide. then you can use animation or window.modal property.
var win = Ti.UI.createWindow({});
win.add(tableview);
win.open({modal:true});
Related
I'm pretty new to swift. The purpose of my app is to show different text on my labels when a button is pressed. I will have hundreds of labels so should i use some kind of a database. If so how can I randomize between these labels. Would be great if any of you could write that piece of code. I also need my app to remember the previous label, so that a user can go back when another button is pressed.
Here is how to generate a random number in Swift:
let rand = Int(arc4random_uniform(x))
This generates a random number between 0 and x-1.
Unfortunately, without a more detailed description and without your code, I can't answer anything more than that.
Create an array of all the possible labels, i.e.
let labels = ["Label1", "Label2", "Label3", "Label4"]
//add data to the labels
Use randomElement() on the labels array to get a randomLabel, i.e.
let randomLabel = labels.randomElement()
You can do create an Array with labels. For example:
let labels = ["Some Text","Some Text","Some Text"]
Then use randomElement() from labels array:
randomTextLabel.text = labels.randomElement()
You can also use json to store data. I dont know how, but you can always google!
Recently I had a bad headache (and I'm still struggling) to find out how to retrieve all values inside an UIPickerWheel. For me should be enough to move at particular row of the wheel, but I can't! So frustrating! I tried to scroll row by row to retrieve all values (https://stackoverflow.com/a/39300344/821407) but it's so slow! Any clue?
NB: I can't use adjustToPickerWheelValue because my root problem is that I don't know the value since they are dynamic and I would like to avoid launchArguments/launchEnvironment.
This is probably not the answer you were hoping for but it is not possible to get the title of all rows in a UIPickerView in a UITest.
As you know when running a UITest you can only access your app's UI elements via the XCUIElement class. That class has a value property that gives you some information about the UI element you access. When accessing a UIPickerView the value gives you the title of the currently selected row. But only of the selected row. You can access the picker's row elements, but unfortunately the value property for the row elements is always empty. So, no luck here. All you the info you can get is the number of rows of your picker.
This is not really surprising though. Even if you had access to the UIPickerView, you could not access the titles of all rows directly. UIPickerView does not know about the titles that it displays. It is the job of the UIPickerViewDataSource to provide the titles.
So, unfortunately, if you need to know all the row titles of your UIPickerView in a UITest, you really have to select each value one by one via your app's user interface.
But it does not have to be as complicated as in the answer you linked. Instead of simulating a scroll you can simply tap on the next row to select it (should be slightly faster):
let pickerView = app.pickerWheels.element
let numRows = pickerView.children(matching: .any).count
var values: [String] = [pickerView.value as! String]
for _ in 0..<numRows {
pickerView.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.55)).tap()
values.append(pickerView.value as! String)
}
In your question you do not really describe what you are trying to test. But if you want to test if the picker has the correct row titles maybe a UnitTest would be a more practical approach?
Im a beginner to developing apps and I'm trying to create my first real app using Xcode/Swift.
The problem I am having is setting up a table view to show certain information. I've managed to create other table views successfully but this one is slightly more complicated. I'll start off by breaking it down.
I have a variable that receives data via a segue called var recievedSelection = (choice: "", choiceValue:0.0) 'choice' being the name of selection and 'choiceValue' being the cost of that selection.
I then store this data into a dictionary array called var dict:[String:Double] = ["":0.0] by using this line of code:
self.dict[self.recievedSelection.choice] = self.recievedSelection.choiceValue
I have a table view all set up with delegate methods etc working and dequeueReusableCellWithIdentifier("basic", forIndexPath: indexPath). The numberOfSectionInTableView return 1 and numberOfRowsInSection return self.dict.count
What I am having problems with is using the data of each 'key' of self.dict to set as the cell.textLabel?.text and the data of each 'value' of self.dict to set as the cell.detailTextLabel?.text so that when the tableView loads the name and price of that selection is visible in each cell. Once user has made all their selections/choices as there will be a few to make throughout the app, there should be a list of those selections/choices that can be viewed in this table view.
Then there is a "Total" amount at the bottom just under the table view that calculates the overall amount.
I have also set up the table view to delete individual cells that when and if a cell is deleted that amount/price set into that cell is deducted from the total at the bottom of screen.
I am using NSUserDefaults to save the data loaded into the table view as there isn't any personal data being stored and it is only a brief estimate.
But the problem is, I can't get the table view to load both the values and keys of 'self.dict' into the table view textLabel and the detailTextLabel?
I hope that makes sense! I'd really appreciate any help.
I'm going to assume that you want to get values for your UITableViewDataSource from a Dictionary. An Array would be better, and you can likely change your code to use one for the UIViewController's data, but if you must, first get a set of the Dictionary's keys into an Array:
var myDataSource = Array(self.dict.keys)
Reassign this value EVERY TIME you edit/delete from the Dictionary, before you call tableView.reloadData(), to avoid index out of bounds crashes. Now, in your dataSource methods, you can check
self.dict[myDataSource[indexPath.row]]
and
myDataSource[indexPath.row]
and
return self.dict.count
This will give you both the size of the array that you need for number of rows, and the value and key you need from your Dictionary. If you like, you can also iterate over a Dictionary's keys and values with:
for (key, value) in self.dict {
//do something
}
I am not completely sure from your question what is causing the problem, meaning i'm not sure which value you are not getting. However, you can get those values by using:
let keyArray = dict.allKeys
then in your cellForIndexPath:
cell.textLabel.text? = keyArray[indexPath.row] //the "key"'s Value
cell.detailtextLabel.text? = dict[keyArray[indexPath.row]] // the "value"s value
Hope this helps your issue?
I'm a very newbie in the obj-c programming and have some troubles trying to change values between two views. I'm using Xcode 4.5 and storyboards and I've some problems with passing a changed value from the second view to the first one.
Here's my 2 very simple views (posting the link as I'm a new user and can't post images):
https://www.dropbox.com/s/q4o2bblu1p57zod/img.png
These views are assigned to the same class (ViewController) and the code I'm using to change the 2 labels is:
-(IBAction)setLabel:(id)sender
{
if (myTextField.text.length != 0) {
myLabel1.text = myTextField.text;
myLabel2.text = myTextField.text;
}
}
The problem is that Label1 changes correctly its text, but there's nothing to do with Label2! It doesn't want to change...
I think I'm trying to do something that can be made in others ways...Can you please tell me if it's correct?
You need to use Protocol-Delegate approach to update content in First view.
I suggest you to visit this sample link.
Your two view controllers may be of the same class but they are going to be different objects at runtime. You have a segue between them and when that executes a new instance will be created. Since the 'label2' of the second instance is not displayed on its screen, your assignment doesn't produce a visible change.
In my Dashcode mobile app I have a listView that is bound to a datasource. By default it shows everything in the datasource. If I add a search field the user may limit the list to just the records that match their search text.
I want to create my own preset searches attached to buttons that would be able to load a list view and show only the records from my datasource that match my custom search.
It seems like this ought to be possible, but so far I haven't figured out how to register my own filterPredicate and then use it.
I'm guessing this is what I want to do because it seems like this is what the search field part does.
Has anyone figured out how to do this?
Any help would be appreciated
According to the dashcode starter section, you could use something along the lines of:
itemDescription = Class.create(DC.ValueTransformer, {
transformedValue: function(value){
return "Page: " + value;
}
});