NativeScript/Utils/utils_android.ts

export module tk {
    // TODO: this should be properly organized
    export module utils {
        export class Collections {
            public static stringArrayToStringSet(str: string[]): any {
                var hashSet = new java.util.HashSet();
                if ("undefined" != typeof str) {
                    for (var element in str) {
                        hashSet.add('' + str[element]);
                    }
                }
                return hashSet;
            }

            public static stringSetToStringArray(stringSet: any): string[] {
                var arr = [];
                if ("undefined" != typeof stringSet) {
                    var it = stringSet.iterator();
                    while (it.hasNext()) {
                        var element = '' + it.next();
                        arr.push(element);
                    }
                }

                return arr;
            }
        }
    }
}