I'm new to this forum, and really hope somebody could help me, as I've been searching Google endlessly the last few days.
I'm writing an app where you can choose a location, ex. grocery store, petrol station, and also a scenario like asking if you can pay by card.
The scenario then gets translated to another language.
What I'm trying to accomplish is the following:
I would like to select a location from a drop down list, which in turn would give me options for that selection in a second drop down list.
Example:
SELECT grocery store FROM first drop down
The second drop down must populate with scenarios that you would use in a grocery store
SELECT petrol station FROM first drop down
The second drop down must populate with scenarios that you would use at petrol station.
I will post my code, if needed!
在第一个组合上附加一个选择侦听器,在其中您将填充第二个组合的选择选项。
I've finally got it right.
listPlaces = (Spinner)findViewById(R.id.spnPlaces);
listScenarios = (Spinner)findViewById(R.id.spnScenario);
String[] places = new String[] {"At the Supermarket","At the Petrol Station", "At The Spur"};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, places);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
listPlaces.setAdapter(adapter);
listPlaces.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
switch (position){
case 0:{
List <String> list = new ArrayList<String>();
list.add("Tea");
list.add("Coffee");
list.add("Sugar");
list.add("Milk");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(Options.this, android.R.layout.simple_spinner_dropdown_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
listScenarios.setAdapter(dataAdapter);
break;
}
case 1:{
List <String> list = new ArrayList<String>();
list.add("Bread");
list.add("Butter");
list.add("Eggs");
list.add("Bacon");
ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(Options.this, android.R.layout.simple_spinner_dropdown_item, list);
dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter2.notifyDataSetChanged();
listScenarios.setAdapter(dataAdapter2);
break;
}
}
}
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