spinner

问题 I develop an Adroid application. So i want to customize programmatically the behavior of DropDown Spinner. I overwrite the getDropDownView method but i cannot find anything to change the dimension of DropDown and also the alignment of it. I only change the color of each line in DropDown like this View view = this.getView(position, convertView, parent); if (position % 2 == 0) { view.setBackgroundColor(Color.YELLOW); } else { view.setBackgroundColor(Color.GRAY); } Can someone help me? Thanks

问题 Hi I am an amateur in android .I would like to add images to my spinner's item. Unfortunately, I dont know how to do it . Below is my xml file and MainActivity. Thanks for reading. XML FILE <resources> <string-array name="walutyarrajwoskie"> <item>ALL</item> <item>AMD</item> <item>AZN</item> <item>BYR</item> <item>BAM</item> <item>BGN</item> </string-array> </resources> MAINACTIVITY @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

问题 QUESTION: If I set a variable prior to the onCreate can I use notifyDataSetChanged() to update an adapter that uses that array later? I am instigating my city_values array prior to my onCreate -This is the only way I can get the script not to show any errors. But once the user selects a state from its spinner it should use notifyDataSetChanged() to update the adapter that attaches the city_values array. Below is a small section of my code. I think my issue has to do with the city_value being

问题 I have two activities. In the second activity I have a spinner . what I would like to happen is after the user selects an item from the spinner it will save via actionbar press and on back press which will load the previous activity. Based on my research my activity is supposed to look something like the following below but it's not working what am I doing wrong?? @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout

问题 In my android app, I set the theme like this: @Override public void onCreate(Bundle savedInstanceState){ ThemeSetterActivity.setStyle(Main_MenuActivity.this); // this just calls context.setTheme(); super.onCreate(savedInstanceState); setContentView(R.layout.main_menu); } But how do I change the theme using ThemeSetterActivity.setStyle(Main_MenuActivity.this); when it's in the onresume event. When I try it, it does call the function but the theme doesn't change. Does it have something to do

问题 I am trying to display an ajax spinner when loading AJAX content. The following code appears to work fine in Firefox but not in IE7. The functions to show and hide the spinner are being called but the browser just does not display it. Here is the jQuery: $.ajax({ url: filterorSearch, data: {filterParams: JSON.stringify(filters), requestTime: new Date().getTime()}, beforeSend: function(){ showLoadingGraphic(); }, complete: function(){ hideLoadingGraphic(); }, success: function(data){ $("

问题 New to android development, be gentle haha. I am wanting to populate a spinner with data from my SQLite database. I have a table that is pre-populated and am able to query it successfully. Problem is that I am able to populate the spinner when running it in my emulater (android 2.2) but not able to run it on my portable devices (tablet and phone) (running android 2.2). I get a generic error message saying that: "applilcation...(app name)...has stopped unexpectedly. Please try again." However,

问题 I have an ObservableList of custom objects RecipeObject_Fermentable , whose properties I am displaying to the user through a TableView . For the most part it works well; when I populate the ObservableList with a new item, the TableView displays its contents. Using the .setCellValueFactory() method for each column allows me to display the simple objects (Strings and Doubles) as text in my TableView very easily. For instance, I can access property ' name ' of type String with... private

问题 (I am struggling with a simple problem I think!? In my android app I made a spinner that will be filled with 2 values: On and Off . So I created a file called Arrays.xml in Resources/values/ Now I thought that I need something like this, but this doesn't work: Spinner ActionSpinner = FindViewById<Spinner>(Resource.Id.ActionSpinner); ActionSpinner.ItemSelected += new EventHandler<AdapterView.ItemSelectedEventArgs>(ActionSpinner_ItemSelected); var ActionSpinnerAdapter = ArrayAdapter

问题 Can anyone please tell me how to add multiple spinners with only one onItemSelected(). Right now i am doing something like this: Spinner s[] = new Spinner[5]; I am using this for displaying hierarchy in spinners. For index = 0; it works fine. But problem arises with next index as there is only one onItemSelected(). What can you suggest on this? Note: I am coding to have spinners created dynamically and filled with corresponding cursor. Cursor is not an issue so far. Thanks! 回答1: Public class