Android ProgressDialog Progress Bar doing things in the right order
- by FauxReal
I just about got this, but I have a small problem in the order of things going off.
Specifically, in my thread() I am setting up an array that is used by a Spinner. Problem is the Spinner is all set and done basically before my thread() is finished, so it sets itself up with a null array.
How do I associate the spinners ArrayAdapter with an array that is being loaded by another thread?
I've cut the code down to what I think is necessary to understand the problem, but just let me know if more is needed. The problem occurs whether or not refreshData() is called.
Along the same lines, sometimes I want to call loadData() from the menu. Directly following loadData() if I try to fire a toast on the next line this causes a forceclose, which is also because of how I'm implementing ProgressDialog.
THANK YOU FOR LOOKING
public class CMSHome extends Activity {
private static List<String> pmList = new ArrayList<String>();
// Instantiate helpers
PMListHelper plh = new PMListHelper();
ProjectObjectHelper poc = new ProjectObjectHelper();
// These objects hold lists and methods for dealing with them
private Employees employees;
private Projects projects;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Loads data from filesystem, or webservice if necessary
loadData();
// Capture spinner and associate pmList with it through ArrayAdapter
spinner = (Spinner) findViewById(R.id.spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item,
pmList);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
//---the button is wired to an event handler---
Button btn1 = (Button)findViewById(R.id.btnGetProjects);
btn1.setOnClickListener(btnListAllProjectsListener);
spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
}
private void loadData()
{
final ProgressDialog pd = ProgressDialog.show(this,
"Please wait", "Loading Data...", true, false);
new Thread(new Runnable(){
public void run(){
employees = plh.deserializeEmployeeData();
projects = poc.deserializeProjectData();
// Check to see if data actually loaded, if not then refresh
if ((employees == null) || (projects == null)) {
refreshData();
}
// Load up pmList for spinner control
pmList = employees.getPMList();
pd.dismiss();
}
}).start();
}
private void refreshData()
{
// Refresh data for Projects
projects = poc.refreshData();
poc.saveProjectData(mCtx, projects);
// Refresh data for PMList
employees = plh.refreshData();
plh.savePMData(mCtx, employees);
}
}
<---- EDIT -----
I tried changing loadData() to the following after Jims suggestion. Not sure if I did this right, still doesn't work:
private void loadData()
{
final ProgressDialog pd = ProgressDialog.show(this,
"Please wait", "Loading Data...", true, false);
new Thread(new Runnable(){
public void run(){
employees = plh.deserializeEmployeeData();
projects = poc.deserializeProjectData();
// Check to see if data actually loaded, if not return false
if ((employees == null) || (projects == null)) {
refreshData();
}
pd.dismiss();
runOnUiThread(new Runnable() {
public void run(){
// Load up pmList for spinner control
pmList = employees.getPMList();
}
});
}
}).start();
}
