3 Answers

• Accepted Answer

  You didn't mention a platform (please always do that!), so am guessing you are talking about a mobile project here instead of desktop. Since you also did not mention the OS, I will assume this must work under iOS and Android.

  To my knowledge, in order to call another program that program must have registered a custom URL scheme. Then you would call the program by using the Ti.Platform.openURL method. All titanium app's automatically register a custom URL scheme. For iOS apps, you can find (or modify) the name in the CFBundleURLName string tag value at (proj)/build/iphone/Info.plist

  For non-titanium apps, you need to find that app's custom URL name. If undocumented, I would first just experiment in the device browser with variations of:

  whatsapp://

  Basically, replace the http: with a custom scheme name, then use it as:

  Ti.Platform.openURL('whatsapp://');
  

  Often, programs also recognize things beyond the // as arguments to cause some specific action to be taken based on what was passed.

  For Android only, you may also be able to use Intents.

• Yes, see Doug Handy's explanation for how to do it with iOS. I recently answered a question like this utilizing the TomTom application.

  You can launch Android Activities (parts of the application) through intents. Check out the documentation. This might show a list of applications to perform the individual action however.

• what cat i do to send message to phone number by whatsapp
  so i would like to know url arguments for send message and call

  Ti.Platform.openURL('whatsapp://'????);