Problem with cusom Dialog for ProgressDialog

I have a LoginDialog called from Activity. In LoginDialog I am trying to open another Dialog (mProgressDlg) to indicate the progress. In mProgressDlg layout I have 2 TextView. I get NullPointerException on setText() of any of those TextView.

LoginDialog :

    private Dialog mProgressDlg;
     private TextView mMessage, mprogTitle, mProgMessage;
public LoginDialog(Context context) {
    super(context);
    mContext = context;
    ld = null;
    init();
    }
private void init() {
    this.setContentView(R.layout.user_pass_dialog);

    mMessage = (TextView) findViewById(R.id.messageText);
    mMessage.setText("Loaded ");

    // ProgressDialog
    mProgressDlg = new Dialog(mContext);
    mProgressDlg.setContentVie开发者_如何学Gow(R.layout.progress_dialog);
    mProgTitle = (TextView) findViewById(R.id.titleText_progressDlg);
    mProgMessage = (TextView) findViewById(R.id.message_progressDlg);
    // On below 2 lines, I get NPE.
    mProgTitle.setText("Hello");
    mProgMessage.setText("Good Day");
}

progressDialog.xml

    <TextView android:id="@+id/titleText_progressDlg" android:text="TextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:layout_marginTop="10dp" android:textStyle="bold"></TextView>
    <TextView android:id="@+id/message_progressDlg" android:text="TextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:layout_marginTop="10dp"></TextView>

LogCat :

04-06 14:54:29.087: ERROR/AndroidRuntime(379): Caused by: java.lang.NullPointerException
04-06 14:54:29.087: ERROR/AndroidRuntime(379):     at orange.android.vpn.LoginDialog.init(LoginDialog.java:88) ***// THIS IS mProgTitle.setText("Hello");***
04-06 14:54:29.087: ERROR/AndroidRuntime(379):     at orange.android.vpn.LoginDialog.<init>(LoginDialog.java:50)  ***// THIS IS CALLING init() FROM CONSTRUCTOR***

Can anyone help me know, why am I getting this NullPointerException in init() while accessing mProgTitle and/or mProgMessage. Any help is highly appreciated.

Thanks

mProgressDlg.setContentView(R.layout.progress_dialog);

    mProgTitle = (TextView) findViewById(R.id.titleText_progressDlg);

should be

 mProgressDlg.setContentView(R.layout.progress_dialog);

    mProgTitle = (TextView) mProgressDlg.findViewById(R.id.titleText_progressDlg);

because you are accessing components in the dialog layout. just findViewById is used in as a function in activity because you: with setContentView({layout}) you set activity's layout and access components with findViewById, the same for dialog you type dialog.setContentView and you access components the samo diloag.findViewById