在android中单击按钮时更新微调器值

Question

在我的应用程序中有 2 个字段..它们是 1 个微调器和 1 个按钮……在这里我必须选择微调器值并单击提交按钮意味着微调器值是动态更新的……该怎么做……我必须开发静态更新微调器值使用..我希望需要动态更新微调器值...我该怎么做..请给我一些想法。

我使用了以下代码：

public class InsertionExample extends Activity {
private final String NAMESPACE = "http://xcart.com";
private final String URL = "http://192.168.1.168:8089/XcartLogin/services/update?wsdl";
private final String SOAP_ACTION = "http://xcart.com/insertData";
private final String METHOD_NAME = "insertData";
Button btninsert;
String selectedItem;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.change_status);

  //  TextView tv = (TextView) findViewById(R.id.textView1);    
  // tv.setText("Welcome ,"+getIntent().getExtras().getString("orderid"));
    //get reference to the spinner from the XML layout
    Spinner spinner = (Spinner) findViewById(R.id.spinner1);
    btninsert = (Button)findViewById(R.id.btn_insert1);
    btninsert.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
            PropertyInfo unameProp =new PropertyInfo();
            unameProp.setName("Status");//Define the variable name in the web service method
            unameProp.setValue(selectedItem);//Define value for fname variable
            unameProp.setType(String.class);//Define the type of the variable
            request.addProperty(unameProp);


              SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
              envelope.setOutputSoapObject(request);
              HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

              try{
               androidHttpTransport.call(SOAP_ACTION, envelope);
                  SoapPrimitive response = (SoapPrimitive)envelope.getResponse();

                 TextView result = (TextView) findViewById(R.id.textView2);
                  result.setText(response.toString());
             }
           catch(Exception e){

           }
              }
    });

    //attach the listener to the spinner
    spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
    //Dynamically generate a spinner data 
    createSpinnerDropDown();

}

//Add animals into spinner dynamically
private void createSpinnerDropDown() {

    //get reference to the spinner from the XML layout
    Spinner spinner = (Spinner) findViewById(R.id.spinner1);

    //Array list of animals to display in the spinner
    List<String> list = new ArrayList<String>();

    list.add("Q");
    list.add("P");
    list.add("F");
    list.add("I");
    list.add("C");

    //create an ArrayAdaptar from the String Array
    ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_spinner_item, list);
    //set the view for the Drop down list
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    //set the ArrayAdapter to the spinner
    spinner.setAdapter(dataAdapter);
    //attach the listener to the spinner
    spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());

}

public class MyOnItemSelectedListener implements OnItemSelectedListener {

    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {

         selectedItem = parent.getItemAtPosition(pos).toString();

 }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub

    }



    }

    public void onNothingSelected(AdapterView<?> parent) {
        // Do nothing.
    }
}

Answer 1

您可以在适配器上使用notifyDataSetChanged()。它将能够在 Spinner 中动态更改数据。

adapter.notifyDataSetChanged();