[android] How to customize a Spinner in Android

The most elegant and flexible solution I have found so far is here: http://android-er.blogspot.sg/2010/12/custom-arrayadapter-for-spinner-with.html

Basically, follow these steps:

  1. Create custom layout xml file for your dropdown item, let's say I will call it spinner_item.xml
  2. Create custom view class, for your dropdown Adapter. In this custom class, you need to overwrite and set your custom dropdown item layout in getView() and getDropdownView() method. My code is as below:

    public class CustomArrayAdapter extends ArrayAdapter<String>{
    
    private List<String> objects;
    private Context context;
    
    public CustomArrayAdapter(Context context, int resourceId,
         List<String> objects) {
         super(context, resourceId, objects);
         this.objects = objects;
         this.context = context;
    }
    
    @Override
    public View getDropDownView(int position, View convertView,
        ViewGroup parent) {
        return getCustomView(position, convertView, parent);
    }
    
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      return getCustomView(position, convertView, parent);
    }
    
    public View getCustomView(int position, View convertView, ViewGroup parent) {
    
    LayoutInflater inflater=(LayoutInflater) context.getSystemService(  Context.LAYOUT_INFLATER_SERVICE );
    View row=inflater.inflate(R.layout.spinner_item, parent, false);
    TextView label=(TextView)row.findViewById(R.id.spItem);
     label.setText(objects.get(position));
    
    if (position == 0) {//Special style for dropdown header
          label.setTextColor(context.getResources().getColor(R.color.text_hint_color));
    }
    
    return row;
    }
    
    }
    
  3. In your activity or fragment, make use of the custom adapter for your spinner view. Something like this:

    Spinner sp = (Spinner)findViewById(R.id.spMySpinner);
    ArrayAdapter<String> myAdapter = new CustomArrayAdapter(this, R.layout.spinner_item, options);
    sp.setAdapter(myAdapter);
    

where options is the list of dropdown item string.

Examples related to android

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How to implement a simple scenario the OO way My eclipse won't open, i download the bundle pack it keeps saying error log getting " (1) no such column: _id10 " error java doesn't run if structure inside of onclick listener Cannot retrieve string(s) from preferences (settings) strange error in my Animation Drawable how to put image in a bundle and pass it to another activity FragmentActivity to Fragment A failure occurred while executing com.android.build.gradle.internal.tasks

Examples related to android-layout

How to check if a key exists in Json Object and get its value How to center the elements in ConstraintLayout Android - how to make a scrollable constraintlayout? Add ripple effect to my button with button background color? This view is not constrained vertically. At runtime it will jump to the left unless you add a vertical constraint Is it possible to put a ConstraintLayout inside a ScrollView? Differences between ConstraintLayout and RelativeLayout How to remove title bar from the android activity? How to have EditText with border in Android Lollipop Android: ScrollView vs NestedScrollView

Examples related to android-spinner

Change Spinner dropdown icon How to add a Hint in spinner in XML How to set dropdown arrow in spinner? How to customize a Spinner in Android Android Spinner : Avoid onItemSelected calls during initialization How to create a drop-down list? Best way to show a loading/progress indicator? Android : Fill Spinner From Java Code Programmatically How to change the spinner background in Android? How to set Spinner Default by its Value instead of Position?