Android: how to create a transparent dialog-themed activity

Question

My original goal here was a modal dialog, but you know, Android didn\'t support this type of dialog. Alternatively, building a dialog-themed activity would possibly work.

Answer 1

Just one thing to add to all the answers here. To achieve a full dialog like behaviour, you can reposition the dialog by changing the window layout params:

WindowManager.LayoutParams params = getWindow().getAttributes(); 
params.x = ...;
params.y = ...;
params.width = ...;
params.height = ...;

this.getWindow().setAttributes(params);

We used a similar technique to achieve a floating activity effect in the Tooleap SDK: