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Editorial Team
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Asked: 2026-06-07T11:18:35+00:00

I have been working on this all night and I am in a brain

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I have been working on this all night and I am in a brain fog. can anyone give me a code snipit that would help I currently have this to populate SpinnerA onCreate:

ArrayAdapter<CharSequence> adapterTypeGas = ArrayAdapter.createFromResource(
this, R.array.TypeGas, android.R.layout.simple_spinner_item);
adapterTypeGas.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerTypeGas.setAdapter(adapterTypeGas);

R.array.TypeGas has two choices “Propane Gas” or “Natural Gas”. depending on what the user selects I want SpinnerB to use either R.array.NaturalGas or R.array.PropaneGas. My problem is that the spinner is populated at create how do I change it so it is not populated until after SpinnerA onItemSelected? Thanks for your help. I am fairly new to developing so if you could be detailed in your answer that would be great.

after implementing the code from “RastheDestoryer” i get an error at “createFromResource” of the ArrayAdapter for spinnerB. the error is: The method createFromResource(Context, int, int) in the type ArrayAdapter is not applicable for the arguments (CSSTPipeSizingActivity.OnGasSelectedListener, int, int). In my main.xml file I have to specify an array for spinnerB (that array is stored in my strings.xml file) uses. I think this is the problem, because in my code I am telling it a different array. Any thoughts on how to resolve this?

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1 Answer

  1. Editorial Team

    This is the code that I ended up using:

    public void main program () {
...
ArrayAdapter<CharSequence> adapterTypeGas = ArrayAdapter.createFromResource(
            this, R.array.TypeGas, android.R.layout.simple_spinner_item);
        adapterTypeGas.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinnerTypeGas.setAdapter(adapterTypeGas);

    //Sets up the spinnerPipeLength spinner 
    ArrayAdapter<CharSequence> adapterPipeLength = ArrayAdapter.createFromResource(
            this, R.array.PipeLength, android.R.layout.simple_spinner_item);
        adapterPipeLength.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinnerPipeLength.setAdapter(adapterPipeLength);

    // Listens for changes in the selected item in each spinner 
    spinnerTypeGas.setOnItemSelectedListener(new GASOnItemSelectedListener());
    spinnerSupplyPressure.setOnItemSelectedListener(new    SupplyOnItemSelectedListener());
    spinnerPipeLength.setOnItemSelectedListener(new MyOnItemSelectedListener());
...
} // end mainprogram()

public void SpinnerNatGas() {
    ArrayAdapter<CharSequence> adapterSupplyPressure = ArrayAdapter.createFromResource(
            this, R.array.NaturalGas, android.R.layout.simple_spinner_item);
    adapterSupplyPressure.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinnerSupplyPressure.setAdapter(adapterSupplyPressure);
    adapterSupplyPressure.notifyDataSetChanged();
} // end SpinnerNatGAs ()

public void SpinnerProGas () {
    ArrayAdapter<CharSequence> adapterSupplyPressure = ArrayAdapter.createFromResource(
            this, R.array.PropaneGas, android.R.layout.simple_spinner_item);
    adapterSupplyPressure.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinnerSupplyPressure.setAdapter(adapterSupplyPressure);
    adapterSupplyPressure.notifyDataSetChanged();
} // end SpinnerProGAs ()
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