SimpleCamera.java

private boolean hasCamera(Context context) {
     if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
         // this device has a camera
         Log.d(TAG, "At Least one Camera Detected!");
         return true;
     } else {
         // no camera on this device
         Log.d(TAG, "No Cameras detected.");
         return false;
     }
 }