Question

我在android中有一个程序，spinner从rest服务中动态获取数据。我想要实现的是当第一个微调器加载其值时，所选值加载第二个和第三个微调器的值。我想禁用第二个和第三个微调器的单击，直到微调器被填充到所有微调器中。我称之为填充第二和第二的功能。程序结束时的第三个微调器。

public void addItemsOnSpinner1() 
{
Bundle extras = getIntent().getExtras();
String strEmployeeID="";
if (extras != null) {
String value = extras.getString("new_variable_name");
strEmployeeID = value;
}
JSONObject login = new JSONObject();
try
{
login.put("EmployeeID",strEmployeeID);
//login.put("Password", etCountry.getText().toString());
JSONObject finaldata = new JSONObject();
finaldata.put("ProjectRequest", login);
final ConnectToServer connect = new ConnectToServer();
connect.extConnectToServer(HourlyEntry.this,new ConnectToServer.Callback() 
{
public void callFinished(String result)
{
// Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
JSONObject resp = null;
try 
{
resp = new JSONObject(result);
// Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
JSONObject Login1Result = resp.getJSONObject("ProjectResult");
JSONArray DepartmentDetails = Login1Result.getJSONArray("ProjectDetails");
// String strMessage = Login1Result.getString("message");
// Toast.makeText(getBaseContext(), Login1Result.getString("ProjectDetails"), Toast.LENGTH_LONG).show();
//  List<String> list = new ArrayList<String>();
if (!Login1Result.getString("ProjectDetails").equalsIgnoreCase("null")) 
{
//JSONArray DepartmentDetails = Login1Result.getJSONArray("ProjectDetails");

m_Project_list = new ArrayList<String>();
m_projectID_list = new ArrayList<String>();
for (int i = 0; i < DepartmentDetails.length(); i++) 
{
JSONObject m_DepartmentDetails = DepartmentDetails.getJSONObject(i);
// Toast.makeText(getBaseContext(),m_DepartmentDetails.toString() , Toast.LENGTH_LONG).show();
if (!m_DepartmentDetails.getString("ProjectName").equalsIgnoreCase("null")&& !m_DepartmentDetails.getString("ProjectName").equalsIgnoreCase("")) 
{
// list.add(m_DepartmentDetails.getString("ProjectName"));
m_Project_list.add(m_DepartmentDetails.getString("ProjectName"));
// Toast.makeText(getBaseContext(), m_DepartmentDetails.getString("ProjectName"), Toast.LENGTH_LONG).show();
}
if (!m_DepartmentDetails.getString("ProjectID").equalsIgnoreCase("null")&& !m_DepartmentDetails.getString("ProjectID").equalsIgnoreCase("")) 
{
m_projectID_list.add(m_DepartmentDetails.getString("ProjectID"));
//Toast.makeText(getBaseContext(), m_DepartmentDetails.getString("ProjectID"), Toast.LENGTH_LONG).show();
String strProjectID="";
String item2 =  m_DepartmentDetails.getString("ProjectID");
strProjectID = item2;
}
}
}
s1 = (Spinner) findViewById(R.id.spinnerL);
final ArrayAdapter<String> adapter = new ArrayAdapter<String>(mContext, R.layout.spin,m_Project_list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
s1.setAdapter(adapter);
if (m_projectID_list.contains(m_ProjectID)) 
{
s1.setSelection(m_projectID_list.indexOf(m_ProjectID));
}
}
catch (final JSONException e)
{
}
}
}, "http://aapna.azurewebsites.net/Service1/Project", finaldata,
"POST");
connect.execute(finaldata);
s1.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> adapter, View v,
int position, long id) {
// On selecting a spinner item
final String item1 = adapter.getItemAtPosition(position).toString();
final String SelectedProjectID = m_projectID_list.get(s1.getSelectedItemPosition());
//  Toast.makeText(getApplicationContext(),
//  SelectedProjectID, Toast.LENGTH_LONG).show();
//  Showing selected spinner item
//  Toast.makeText(getApplicationContext(),
//  "Selected  : " + item1, Toast.LENGTH_LONG).show();
s2.setClickable(false); 
s3.setClickable(false);
addItemsOnSpinner2(SelectedProjectID);
s2.setClickable(true);
addItemsOnSpinner3(SelectedProjectID);
s3.setClickable(true);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
catch (Exception e) {
Log.d("InputStream", e.getLocalizedMessage());
}
}

Answer 1

试试这个..

将第一个元素从 m_Project_list ArrayList更改为选择

在用户选择微调器之后，您可以在onCreate内的代码下执行其他操作

<强>代码

s1.setSelection(0);
s1.setOnItemSelectedListener(new OnItemSelectedListener(){

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int pos, long arg3) {
            // TODO Auto-generated method stub
           if(pos == 0){
                s2.setEnabled(false);
                s3.setEnabled(false);
           }
           else{
               // do something
               addItemsOnSpinner2(SelectedProjectID);
               s2.setEnabled(true);
               addItemsOnSpinner3(SelectedProjectID);
               s3.setEnabled(true);
           }
              }
        }

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

        }

    });

修改

Handler handler = new Handler(); handler.postDelayed(new Runnable() { @Override public void run() { Log.i("=========="," handler == > "); Toast.makeText(getBaseContext(), "handler", Toast.LENGTH_LONG).show(); } }, 5000);

Answer 2

我得到的唯一解决方案是使用延迟功能解决这种旋转器，正如hariharan告诉我的那样。

在微调器1函数中添加这两个语句

    s1.setOnItemSelectedListener(new OnItemSelectedListener() {

                    @Override
                    public void onItemSelected(AdapterView<?> adapter, View v,
                            int position, long id)
                    {
                        // On selecting a spinner item

                        final String item1 = adapter.getItemAtPosition(position).toString();

                        final String SelectedProjectID = m_projectID_list.get(s1.getSelectedItemPosition());


                         s2.setEnabled(false);
                         s3.setEnabled(false);


                               addItemsOnSpinner2(SelectedProjectID);

                               addItemsOnSpinner3(SelectedProjectID);
                               delay1();

//                      



                    }

                    @Override
                    public void onNothingSelected(AdapterView<?> arg0)
                    {

                        // TODO Auto-generated method stub

                    }
            });

然后使用以下功能

 public void delay1()
    {
       final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run()
            {

                  s2.setEnabled(true);
                 s3.setEnabled(true);
              }

        }, 3000);
    }

禁用第二个微调器点击，直到第一个微调器获得其值：android

2 个答案: