android - ProgressDialog のクラッシュ

Question

activity で progressdialog を表示するコードがあります。

m_oProgressDialog = ProgressDialog.show(MyActivity.this, "", "");

しかし、私は次のようなエラーログを持つこの行でクラッシュに対抗します.. android.view.WindowManager$BadTokenException: Unable to add window -- token

android.os.BinderProxy@419743f8 is not valid; is your activity running?
    at android.view.ViewRootImpl.setView(ViewRootImpl.java:517)
    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:301)
    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
    at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
    at android.view.Window$LocalWindowManager.addView(Window.java:537)
    at android.app.Dialog.show(Dialog.java:289)

MyActivity.this と getBaseContext() 誰かがいる場合、代わりに This を試しましたか?

i have a function which shows a progress dialog... i first check whether its showing or not ...if not i will show..

 private void showProgressDialog()
    {
        if( (m_oProgressDialog!=null) && (!this.isFinishing()) )
        {
            if( m_oProgressDialog.isShowing() == false )
                m_oProgressDialog.show();
        }
        else
        {
            m_oProgressDialog = ProgressDialog.show(MyActivity.this, "", "");
        }
 }