Build list of permissions to request for the GPS Tutorial on the SSaurel's Blog

PermissionsToRequest.java

private ArrayList<String> permissionsToRequest(ArrayList<String> wantedPermissions) {
    ArrayList<String> result = new ArrayList<>();

    for (String perm : wantedPermissions) {
        if (!hasPermission(perm)) {
            result.add(perm);
        }
    }

    return result;
}

private boolean hasPermission(String permission) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        return checkSelfPermission(permission) == PackageManager.PERMISSION_GRANTED;
    }

    return true;
}