How to detect if device is capable of calling and

Question

Some devices ie. Galaxy Tablet 10.1 can only send SMS, but cannot call. Some other devices like Asus Transformer don't even have SIM card.

How can I detect if device can makes calls? And how can I detect if device can send SMS?

Answer 1

Here is what I make to check is SMS available.

public boolean isAvailable(Context context, Intent intent) {
    final PackageManager mgr = context.getPackageManager();
    List<ResolveInfo> list = mgr.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
}

which is taken from developer.android.com.

And create an Intent to check like this:

Uri smsToUri = Uri.parse("smsto:");
Intent intent = new Intent(Intent.ACTION_SENDTO, smsToUri);
if (isAvailable(intent)) {
    // do whatever you like.
}

Answer 2

You can use the below method to check if sms feature is supported or not:

private void sendSms(String theNumber, String theMsg) {
        // TODO Auto-generated method stub
        String SENT = "Message Sent";
        String DELIVERED = "Message Delivered";

        PendingIntent sentPI = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(SENT), 0);
        PendingIntent deliveredPI = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(DELIVERED), 0);

        registerReceiver(new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
                // TODO Auto-generated method stub
                switch(getResultCode()){
                case Activity.RESULT_OK:   Toast.makeText(getApplicationContext(), "Message Sent", Toast.LENGTH_SHORT).show();
                                            break;
                case Activity.RESULT_CANCELED: Toast.makeText(getApplicationContext(), "Message Not Sent", Toast.LENGTH_SHORT).show();
                                                break;
                case SmsManager.RESULT_ERROR_NO_SERVICE:  Toast.makeText(getApplicationContext(), "No Service Available", Toast.LENGTH_SHORT).show();
                                                           break;
                }
            }
        }, new IntentFilter(SENT));

        registerReceiver(new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
                // TODO Auto-generated method stub
                switch(getResultCode()){
                case Activity.RESULT_OK:   Toast.makeText(getApplicationContext(), "Message Delivered", Toast.LENGTH_SHORT).show();
                                            break;
                case Activity.RESULT_CANCELED: Toast.makeText(getApplicationContext(), "Message Not Delivered", Toast.LENGTH_SHORT).show();
                                                break;

                }
            }
        }, new IntentFilter(DELIVERED));


        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(theNumber, null, theMsg, sentPI, deliveredPI);
    }

Answer 3

You can just wrap your code in try/catch. It works in all cases, even with the last api changes about sms sending.

try{
    // code that use telephony features
}
catch(Exception e){
    // code that doesn't use telephony features
}

Answer 4

Maybe you can query the PackageManager whether the system contains any component that can respond to ACTION_CALL and ACTION_SENDTO intents? You might need to add the "tel:" and "smsto:" scheme in the URI.

Answer 5

That should do it:

 PackageManager pm = this.getPackageManager();

 if (pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
     System.out.println("horray");
 } else {
     System.out.println("nope");
 }

Answer 6

Using this technic you can test all sorts of things too e.g. compass, is location available

    PackageManager pm = getBaseContext().getPackageManager();
    pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY);