從數據庫中獲取值並將其設置在android spinner

Question

嗨如何從數據庫中獲取數據並將其設置在android應用程序中的微調器上我可以開發dis.the下面的代碼是從微調更新數據到android mysql database.but我希望需要得到數據庫中讀取數據和獲取的值是顯示在我的微調值在Android app.how我可以開發這個..

，這是我的Android代碼：

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; 

static final String KEY_NAME = "orderid"; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.change_status); 
    /* Intent in = getIntent(); 

    // Get XML values from previous intent 
    String orderid = in.getStringExtra(KEY_NAME); 

    // Displaying all values on the screen 
    TextView lblName = (TextView) findViewById(R.id.textView1); 


    lblName.setText(orderid); */ 


    Spinner spinner = (Spinner) findViewById(R.id.spinner1); 
    btninsert = (Button)findViewById(R.id.btn_insert1); 
    btninsert.setOnClickListener(new View.OnClickListener() { 
     public void onClick(View v) { 
      Intent in = getIntent(); 
      String orderid = in.getStringExtra(KEY_NAME); 

      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); 
      PropertyInfo idProp =new PropertyInfo(); 
      idProp.setName("Orderid");//Define the variable name in the web service method 
      idProp.setValue(orderid);//Define value for fname variable 
      idProp.setType(String.class);//Define the type of the variable 
      request.addProperty(idProp); 



       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> adapter = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, list); 
    //set the view for the Drop down list 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    //set the ArrayAdapter to the spinner 
    spinner.setAdapter(adapter); 
    adapter.notifyDataSetChanged(); 
    //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. 
    } 
} 

請幫助我。 。我怎麼能開發這個。

Answer 1

您是否嘗試過使用ArrayAdapter <？你的微調器上有>？我曾用過這一次。

private class ColorSpinner extends ArrayAdapter<Integer> { 

    public ColorSpinner(Context context, int textViewResourceId) { 
     super(context, textViewResourceId); 
    } 

    @Override 
    public View getDropDownView(int position, View convertView, ViewGroup parent) { 
     return this.getView(position, convertView, parent); 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // Here can I set a custom layout or view of each item in the spinner. 
     TextView textView = new TextView(PincodeTextView.this.context); 
     String message = Integer.toHexString(this.getItem(position)).toUpperCase(); 
     textView.setBackgroundColor(this.getItem(position)); 
     textView.setText("0x" + message); 
     return textView; 
    } 
} 

然後我用這與加載微調我ColorSpinner：

final View colorbox = this.findViewById(R.id.edit_cell_dialog_color); 
     if (colorbox instanceof Spinner) { 
      ColorSpinner list = new ColorSpinner(context, android.R.layout.simple_spinner_item); 

      // Load from my database the need items in my case a list of color codes. 
      int[] colors = PincodeTextView.this.pincodeDB.getColors(); 

      int indexOfColor = 0; 
      // Add each item into the Spinner. 
      for (int i = 0; i < colors.length; i++) { 
       list.add(colors[i]); 
      } 

      ((Spinner) colorbox).setAdapter(list); 

     }