Check and request to install Facebook App

Last exercise " Start facbook app by startActivity(intent) ", without checking if Facebook App installed. To check if a app instal...

Audi RS6 Avant (2013)

V8 / 3.993 cc / 560 PS / 516ft/lb (700 Nm) @ 1.750 - 5.500 / twin turbo / quattro AWD / 0 - 62 mph (100 km/h): 3,9 s / Vmax: 189 mph (305 ...