Android Studio无法完成建设项目-未显示错误

Question

I press run app (Green Arrow) on the project window:

Displays "Gradle Build Running" in the lower part of the screen. It is briefly followed by "scanning files for index." Then it suddenly stops and is left where it started. No errors or indicators are listed at all.

*This problem occurs with both the emulator and my phone (which have both worked in the past and work with other projects).

Answer 1

Try Building rebuild icon (green hammer near the play button). If it won't show an error, try pressing the logcat Button at the bottom of the page that must show the error.

PS you can also try the debug mode.