根據條件從另一個微調器填充微調器

Question

我需要做的是如果選擇了微調器1中的某個項目，它需要在微調器01中顯示某個數組，例如，如果微調器選擇了一個項目，則紅色微調器01需要顯示level_array作為微調器的下拉選項，否則顯示cparklevel 。 本質上，我試圖顯示每個停車場有多少級別。 所以微調器1包含停車場名稱，微調器01包含級別

    Spinner spinner = (Spinner) findViewById(R.id.spinner1);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this, R.array.cparkColour_array, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);

    Spinner spinner2 = (Spinner) findViewById(R.id.Spinner01);

    if(spinner.getSelectedItem().equals("Red")){


    ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(
            this, R.array.level_array, android.R.layout.simple_spinner_item);
    adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner2.setAdapter(adapter1);
    }

    else {

    ArrayAdapter<CharSequence> adapter2 = ArrayAdapter.createFromResource(
            this, R.array.cparkLevel_array, android.R.layout.simple_spinner_item);
    adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner2.setAdapter(adapter2);
    }
}

任何幫助，將不勝感激

Answer 1

這樣做：

spinner_1.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int position, long arg3) {

                            if(spinner_1.getSelectedItem().equals("Red")){
                            {
                                  // set adapter to spinner_2 here for "Red" selected
                            }
                            else
                            {
                                 // set adapter to spinner_2 for "Red" not selected
                            }
            }    
            @Override
            public void onNothingSelected(AdapterView<?> arg0) {                
            }
});