android-spinner

问题 I know how to work with single spinner. I'am populating one spinner with kilograms and other with grams. I have to open two spinners at a time (one beside other) on click of a button/view. User should be able to scroll through items of spinners individually and select kilograms & grams at one shot. How can i do it? Please help me. 回答1: You probably want to use a custom View for that. Have a look at this project. I use it in my current project, and it's excellent. 来源： https://stackoverflow.com

问题 How can I change the color of the spinner's popup scrollbar? For some reason the color of the scrollbar is currently white on a white background, it is not visible. 回答1: add android:scrollbarThumbVertical="@drawable/yourdawable //in your spinner yourdrawable.xml <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <gradient android:startColor="your color" android:endColor="your color" android:angle="45"/> <corners android:radius="6dp" /> <

问题 How to set spinner dropdown text direction to rtl ? I know for regular texts we can use android:textDirection="rtl" but it does not work for spinner dropdown text. Should I implement it in popup theme? How? Thanks 回答1: Try This - Add below code in Activity Spinner spinner = (Spinner) findViewById(R.id.spinner); ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.planets_array, // android.R.layout.simple_spinner_item); R.layout.textview); // adapter

问题 My data comes from Firebase database. I successfully populated the busNum to the spinner . But my problem is whenever I got to select the busnum , nothing shows up on my spinner . Here are some of codes. List<String> busnum = new ArrayList<String>(); busRef = new Firebase(Config.FIREBASE_URL_BUSNUMBER); busRef.addListenerForSingleValueEvent(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {

问题 I have a sparse array of values which I want to populate in a Spinner, and when the item is selected, I want to get the id (which is the key from the sparse array). What is the preferred way of creating an adapter from a SparseArray? Is it possible to subclass an existing Adapter like BaseAdapter or ListAdapter So that the items will have a key from the SparseArray as item id? Not knowing how to achieve the above, I am thinking of creating a simple ArrayAdapter instance and giving it values

问题 I'm a newbie to Xamarin and I want to create a simple application to get familiar with Xamarin. I want to create and populate the spinner and display it's options dynamically. I have seen the documentation here but it is not created programmatically. Any help will be apreaciated var levels = new List<String>() { "Easy", "Medium", "Hard", "Multiplayer" }; var adapter = new ArrayAdapter<String>(this, Android.Resource.Layout.SimpleSpinnerItem, levels); adapter.SetDropDownViewResource(Android

问题 I'm trying to make an ActionBar spinner that has separators. I have implemented a SpinnerAdapter that has 2 item view types (thanks to getViewTypeCount ). The problem is that I'm being sent some convertViews from the other type. Here's my SpinnerAdapter: public abstract class SeparatorSpinnerAdapter implements SpinnerAdapter { Context mContext; List<Object> mData; int mSeparatorLayoutResId, mActionBarItemLayoutResId, mDropDownItemLayoutResId, mTextViewResId; public static class

问题 background Google plus has a spinner-like view that shows a lot of items, but all of them appear below itself: I need to mimic this in my own spinner (that's what I was told), but as of recently, Material-Design guidelines say (here) the Spinner should put its items on top of itself, and that's what the support library does for it. The problem I can't find a way to revert this behavior. I've tried changing the style of the Spinner, and also searched about this on the Internet (and here). The

问题 I want to remove down triangle on the right side and wants to bottom line. I am using following code to add bottom line: <Spinner android:id="@+id/buttonSelectCountry" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:gravity="center" android:spinnerMode="dropdown" android:text="Select country" style="@style/Widget.AppCompat.Spinner.Underlined"/> and following code to remove down arrow: <Spinner android:id="@+id

问题 I have a listview which is populated from a webservice using an ArrayAdapter. The webservice provides me with all the data I need. Some are just plain textviews yet other alternate between EditText and spinners. I show them easily, also filling up the values where they're due in EditText fields. The problem comes with filling up the value of the Spinner. Can I define an adapter within an adapter? Also my data comes from a webservice as an XML passed as a string. My Spinner code so far inside