Better approach to populate spinner with key and value should be :
Step 1 : Create POJO class which will take care of key and value
public class Country {
private String id;
private String name;
public Country(String id, String name) {
this.id = id;
this.name = name;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
//to display object as a string in spinner
@Override
public String toString() {
return name;
}
@Override
public boolean equals(Object obj) {
if(obj instanceof Country){
Country c = (Country )obj;
if(c.getName().equals(name) && c.getId()==id ) return true;
}
return false;
}
}
Note : toString() method is important as it is responsible for displaying the data in spinner,you can modify toString() as per your need
Step 2 : Prepare data to be loaded in spinner
private void setData() {
ArrayList<Country> countryList = new ArrayList<>();
//Add countries
countryList.add(new Country("1", "India"));
countryList.add(new Country("2", "USA"));
countryList.add(new Country("3", "China"));
countryList.add(new Country("4", "UK"));
//fill data in spinner
ArrayAdapter<Country> adapter = new ArrayAdapter<Country>(context, android.R.layout.simple_spinner_dropdown_item, countryList);
spinner_country.setAdapter(adapter);
spinner_country.setSelection(adapter.getPosition(myItem));//Optional to set the selected item.
}
Step 3 : and finally get selected item's key and value in onitemselected listener method of spinner
spinner_country.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Country country = (Country) parent.getSelectedItem();
Toast.makeText(context, "Country ID: "+country.getId()+", Country Name : "+country.getName(), Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
All the best , Happy coding !
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