public class SearchActivity extends Activity { ArrayAdapter<String> adapter2; String city_values[]; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.search_layout); final Spinner zipspinner = (Spinner) findViewById(R.id.zipspinner); final Spinner cityspinner = (Spinner) findViewById(R.id.cityspinner); String city_values[] = new String[]{"Please select a state."}; adapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, city_values); adapter2.setDropDownViewResource(R.layout.city_spinner_layout); cityspinner.setAdapter(adapter2); JSonArray jsonArray; final JSonArray cityArray; try { String spinnerContentType = "state"; String spinnerURL = "getStoreState.php"; String spinner_data = DataCall.getJSON(spinnerURL, spinnerContentType); jsonArray = new JSonArray(spinner_data); final String[] array_spinner = new String[jsonArray.length()]; for (int i = 0; i < jsonArray.length(); i++) { String stylevalue = jsonArray.getJSonArray(i).getString(0); array_spinner[i] = stylevalue; } ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner); adapter.setDropDownViewResource(R.layout.state_spinner_layout); zipspinner.setAdapter(adapter); zipspinner.setonItemSelectedListener(new AdapterView.onItemSelectedListener() { public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { int item = zipspinner.getSelectedItemPosition(); String item_value = array_spinner[item]; String spinnerContentType = "city"; String spinnerURL = "getStoreCity.php?state=" + item_value; String city_data = DataCall.getJSON(spinnerURL, spinnerContentType); cityArray = new JSonArray(city_data); //The final local variable cityArray cannot be assigned, since it is defined in an enclosing type final String[] city_spinner = new String[cityArray.length()]; for (int i = 0; i < cityArray.length(); i++) { String stylevalue = cityArray.getJSonArray(i).getString(0); //Unhandled exception type JSonException city_spinner[i] = stylevalue; } city_values = city_spinner; //Unhandled exception type JSonException adapter2.notifyDataSetChanged(); } public void onNothingSelected(AdapterView parent { // Do nothing. } }); } catch (JSonException e) { e.printStackTrace(); } }}现在尝试
