Programmatically checking an App is installed or not in iPhone...

Programmatically checking an App is installed or not in iPhone...

BOOL canHandle = [[UIApplication sharedApplication] canOpenURL: [NSURL URLWithString:@"yourApp:"]];

if (canHandle) {
   // Google maps installed
} else {
   // Use Apple maps?
}

Add url Schema of your app only.. example schema for few apps...

for Google drive ....>>>    googledrive

<key>LSApplicationQueriesSchemes</key>
    <array>
     <string>fb</string>
     <string>fbapi</string>
     <string>fbauth2</string>
     <string>fbshareextension</string>
     <string>fb-messenger-api</string>
     <string>twitter</string>
     <string>viber</string>
     <string>whatsapp</string>
     <string>wechat</string>
     <string>line</string>
     <string>instagram</string>
     <string>kakaotalk</string>
     <string>mqq</string>
     <string>vk</string>
     <string>comgooglemaps</string>
     <string>googlephotos</string>
    </array>