Map doesn't display on Mixare app

[wittawut sriviroj]

i had change API key in MixMap.java like this. on https://github.com/mixare/mixare/blob/79080d2a2adf346724cc8669b4b41f430084fcde/src/org/mixare/MixMap.java

Line : 100 with my API key 

ex.  setMapView(new MapView(this, "AIzaSyA4liteNAjUkdzwFPMZHqxWfj13UasD_jg"));

but there still not showing a map

anyone can help ?

ps.sorry for my bad language