Check SMS and DIal support before Intent

Question

I have this code to send SMS via Intent and to call a number :

 public void Call(String s) {//Appeler
    String url = "tel:" + s;
    Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(url));
    startActivity(intent);
}
public void Sms(String s){
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.fromParts("sms", s, null)));
}

it looks fine in my phone , no crash , but in my tablet which doesn't support SMS and call (doesn't have sim card and sms and dial app) the app crashes when calling these methods , so how to handle that exception ?

Answer 1

You must always check whether the is Activity which could handle your Intent

Suppose Skype is install on tablet that can handle your call intent then launch intent

PackageManager packageManager = getPackageManager();
List activities = packageManager.queryIntentActivities(intent,
        PackageManager.MATCH_DEFAULT_ONLY);
boolean isIntentSafe = activities.size() > 0; 
if(isIntentSafe)
{
 // call Call(546) or Sms(1235)
}else{
// No activity is present  to handle  your intent
}

Also check this link