display progressdialog in non-activity class

Question

I am trying to display a dialog in a non-Activity class. Basically, I detect an object in my app, I would like to display a dialog and then switch activities. I\'m getting a \"j

Answer 1

This is the exception you will get if you are performing any UI operation on any thread or from any background task. Also context.runOnUiThread won't work.

Instead use:

activity.runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                             mDialog.dismiss();
                            }
                          });

You can use the same for showing where activity is the object of activity.

Answer 2

Your Dialog should be called from the UIthread so try to use this,

context.this.runOnUiThread(new Runnable() {

            @Override
            public void run() {
                mDialog.show();

            }
        });

Hope this works.

Answer 3

You do this

  context.runOnUIThread( new Runnable() {
             public void run() {
                  // show the Dialog
                  mDialog.setTitle("Please wait");
                  mDialog.setMessage("Please wait");

                  mDialog.show();
               }
            });
         }

     Thread.sleep(5000);

        context.runOnUIThread( new Runnable() {
             public void run() {
                  // Dismiss the Dialog
                  mDialog.dismiss();
               }
            });