<LinearLayout
        android:id="@+id/toplinear"
        android:layout_width="match_parent"
        android:layout_below="@id/gif"
        android:layout_margin="10dp"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <android.support.design.widget.TextInputLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/user_name_text_input"
            android:hint="@string/shr_hint_username">

            <android.support.design.widget.TextInputEditText
                android:layout_width="match_parent"
                android:id="@+id/et_username"
                android:layout_height="wrap_content" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/password_text_input"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/shr_hint_password"
            app:errorEnabled="true">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/et_password"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />
        </android.support.design.widget.TextInputLayout>

        <Button
            android:id="@+id/bt_login"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="@string/login" />


    </LinearLayout>
  class LoginActivity : BaseActivity() {
    private lateinit var input_username: String
    private lateinit var input_password: String
    private var mCompositeDisposable: CompositeDisposable? = null


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        gifImageView.startAnimation()

        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)

        bt_login.setOnClickListener {
            hideKeyboard(it)
            input_username = et_username.text.toString()
            input_password = et_password.text.toString()

            if (Validation.isEmptyField(input_username)) {
                user_name_text_input.error = "UserName should not be Empty! "
            } else {
                // Clear the error.
                user_name_text_input.error = null
            }


            if (Validation.isEmptyField(input_password)) {
                password_text_input.error = "Password should not be Empty! "

            } else {
                // Clear the error.
                password_text_input.error = null
            }

            if(input_password.length>0&&input_username.length>0){
                if(isNetworkAvailable()){
                    showDialogLoading()
                    mCompositeDisposable = CompositeDisposable()

                    mCompositeDisposable?.add(ApiRequestClient.createREtrofitInstance().getLogin(input_username, input_password,
                            "2017")
                            .observeOn(AndroidSchedulers.mainThread())
                            .subscribeOn(Schedulers.io())
                            .subscribe(this::handleResponse, this::handleError))
                }
                else{
                    showSnackBar("No Internet connection")
                }
            }




        }


        et_username.setOnKeyListener { v, keyCode, event ->
            if (!Validation.isEmptyField(et_username.text.toString())) {
                user_name_text_input.error = null
            }

            false
        }

        et_password.setOnKeyListener { v, keyCode, event ->
            if (!Validation.isEmptyField(et_password.text.toString())) {
                password_text_input.error = null
            }

            false
        }

    }

    // handle sucess response of api call
    fun handleResponse(responseFromServer: ResponseFromServer) {
        hideDialogLoading()
        if(responseFromServer.data.status.equals("True")){
            showdialog()
        }
        else{
            showSnackBar(responseFromServer.data.message)
        }

        mCompositeDisposable?.clear()

    }

    // handle failure response of api call
    fun handleError(error: Throwable) {
        hideDialogLoading()
         showSnackBar(error.localizedMessage)
        mCompositeDisposable?.clear()

    }

    private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
        when (item.itemId) {
            R.id.navigation_manual -> {
                showToast("ComimgSoon")
                return@OnNavigationItemSelectedListener true
            }
            R.id.navigation_whats_new -> {
                showToast("ComimgSoon")
                return@OnNavigationItemSelectedListener true
            }
            R.id.navigation_more -> {
                showToast("ComimgSoon")
                return@OnNavigationItemSelectedListener true
            }
        }
        false
    }

    fun showdialog() {

        hideKeyboard(password_text_input)
        val dialogBuilder = AlertDialog.Builder(this)

        // set message of alert dialog
        dialogBuilder.setMessage(getString(R.string.remember))
                // if the dialog is cancelable
                .setCancelable(false)
                // positive button text and action
                .setPositiveButton(getString(R.string.proceed), DialogInterface.OnClickListener { dialog, id ->
                    BaseApplication.baseApplicationInstance.getdatamanger().setLoggedIn(true)
                    launchActivity<HomeActivity>()
                    finish()
                })
                // negative button text and action
                .setNegativeButton(getString(R.string.cancel), DialogInterface.OnClickListener { dialog, id ->
                    dialog.cancel()
                    launchActivity<HomeActivity>()
                    finish()
                })

        // create dialog box
        val alert = dialogBuilder.create()
        // show alert dialog
        alert.show()

    }
}