Can you have a look at the “Android” settings in the Qt Creator options – are all the paths configured correctly?
Also, are there any errors displayed when you select the Android Kit in the “Build & Run” settings?
Its ok. I restarted qt and it went well. But, I got a new problem. By problem, I mean, may be difficulty. I build using android kit and I got a folder. But, I can’t find any .apk in that folder. Where is the .apk ? O.o