Question

I m using AsyncTask in my custom Dialog. AsyncTask works fine in activity, but inside dialog doesn t show ProgressDialog. Tried do privid context from dialog, from activity who showed dialog, app context. Result is same: no ProgressDialog shown on my screen.

private class ClearCache_Task extends AsyncTask<Integer,Integer,Integer>
{
private ProgressDialog progressBar;
private ArrayList<String> m_subfolders;
private final Context m_con;

public ClearCache_Task(Context con, ArrayList<String> subfolders)
{
        m_con = con;
        m_subfolders = subfolders;
    }

    @Override
    protected void onPreExecute()
    {
        super.onPreExecute();
        progressBar = new ProgressDialog(m_con);
        progressBar.setIndeterminate(true);
        progressBar.setCancelable(false);
        progressBar.setMessage("Please wait...");
        progressBar.show();
    }
    @Override
    protected void onPostExecute(Integer result)
    {
        super.onPostExecute(result);
        progressBar.dismiss();
    }
    @Override
    protected Integer doInBackground(Integer... params)
    {
        try
        {
          m_KFileStorage.ClearCache(m_subfolders);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            Log.e(AppTag, e.toString());
        }
        return 0;
    }

Answer 1

Sorry for question. I made mistake calling old code instead of calling asynctask.:)

Answer 2

你们如何把方言附在活动上?

这是我如何做的:

活动:

@Override
protected Dialog onCreateDialog(int id) {
    switch (id) {
        case DIALOG_PROGRESS:
            mProgressDialog = new ProgressDialog(this);
            mProgressDialog.setMessage(Application.string(R.string.dialog_message) + "...");
            mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            mProgressDialog.setCancelable(true);
            mProgressDialog.show();
            return mProgressDialog;
        default:
            return null;
    }
}

In AsyncTask:

@Override
protected void onPreExecute() {
    super.onPreExecute();
    mActivity.showDialog(DIALOG_PROGRESS);
}

更多有关Dialog的信息可读到:rel=“nofollow”http://developer.android.com/guide/topics/ui/dialogs.html。

友情链接