spinner

问题 when I try to define an spinner, this Run time exception is thrown. Why? 回答1: You have to initialize your spinner in the onCreate method, so move CARS_TYPE = (Spinner)findViewById(...); inside onCreate() after setContentView one more thing, CARS_TYPE should not be a constant, better if you call it carsType instead 来源： https://stackoverflow.com/questions/30473270/why-this-runtime-is-occured-unable-to-instantiate-activity-componentinfo

问题 I have a problem with importing a string-array! When I try the code below, The Spinners stay empty and don't load the array string values. This is my code I use: //Fill CoinSpinner Spinner CoinSpinner = FindViewById<Spinner>(Resource.Id.CoinSpinner); CoinSpinner.ItemSelected += new EventHandler<AdapterView.ItemSelectedEventArgs>(CoinSpinner_ItemSelected); ArrayAdapter<String> CoinSpinnerAdapter = new ArrayAdapter<String>(this, Resource.Array.coin_array, Android.Resource.Layout

问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Android: Toast won't delay on spinner I want to delay the toast "Your message "message" is sent to "contact" to appear according to the delay the user chose in the spinner. The following codes has errors (pos), here's my code: Handler handler = new Handler(); spinnerTimeDelay = (Spinner) findViewById(R.id.spinner_delay); spinnerTimeDelay.setOnItemSelectedListener(this); ArrayAdapter<String> aa=new ArrayAdapter

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I am now learning android. I am working on an application, where in when i click on a value of Spinner it moves to the next Intent. And then when I come back to the old (first intent), i need to retain the selected item in that spinner. Please help me out. Thanks in advance 回答1:

问题 I'm new to android development using eclipse and I wonder if someone could me give some tips on how to do this little apps of mine. What I want to do is to display in text view the data or value of a selected item in the spinner. For example I have a spinner with an array of hex data 1 to F. Data F for example corresponds to an error message like " this is an error message ". When I select the data F in my spinner it will display the message "this is an error message" in the textview. I will

问题 I would like to use the tab navigation on actionbarsherlock and I have a spinner in one of the tab layouts. My Problem is: the .setOnItemSelectedListener() for the spinner is never called. what I am doing wrong? BtW. the array adapter does not fill in the items, I must put <Spinner android:id="@+id/sp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:entries="@array/Types" /> attached the class: import android.content.res.Configuration; import android.os.Bundle

问题 I was searching for how to add/Remove Layout Dynamically on click of button in android and found this. I used the codes from above mentioned tutorial and designed a page which generates a layout on every click of button. This layout contains a Spinner , EditText & Button . My code successfully adds/removes the layout on button click. So my first problem is that all the generated spinners are empty i.e. they are not populated with the data from database after their creation and second problem

问题 I am using a code like this: $('body').addClass('ui-loading'); $.mobile.loadingMessage = "Loading"; $.mobile.showPageLoadingMsg(); for showing the jQuery page loading spinner, and it works, the spinner is shown somewhere in the middle of the screen. My problem is that while this is shown the controls which are not covered by it are enabled and can be used. I'm using this on multiple pages so I don't want to disable and after re-enable one by one each control from every page, so for me it

问题 I have used android custom spinner. My custom spinner look like bellow My List data is like List<String> list = new ArrayList<String>(); list.add("001-00434016457-Md. Mokhhlesur Rahman"); list.add("001-00434016724-Mohammad Nazim Ullah"); list.add("001-00434016725-Mohsin Kabir"); list.add("001-00434016881-Maruf Pervaz Khan"); list.add("001-00434017171-Md.Nazmul Hasan"); My Spinner Adapter and setting data in spinner is like bellow Spinner spinner = (Spinner) findViewById(R.id.spinner);

问题 I am tired of searching to get what I want like this in the below image. Combo box sample in a website Yes. I need a Spinner with sub categories as you are seeing in this image. (Ex Short, Medium, Long) I don't wanna use any separate layout to do this. Please help me to get this. 来源： https://stackoverflow.com/questions/20243498/adding-sub-categories-in-spinner-in-android