Raspberry Pi 3 Static IP, WIFI and Ethernet

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

network={
ssid="XXX"
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP TKIP
psk="XXXXX"
}

sudo nano /etc/network/interfaces

iface eth0 inet manual 

allow-hotplug wlan0
iface wlan0 inet manual
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

sudo nano /etc/dhcpcd.conf

interface eth0
static ip_address=192.168.1.111/24
static routers=192.168.1.1
static domain_name+servers=8.8.8.8 

interface wlan0
static ip_address=192.168.1.222
static routers=192.168.1.1
static domain_name_servers=8.8.8.8