使用改造和viewmodel的用户登录不起作用 [英] user login is not working using retrofit and viewmodel

问题描述

我的登录无法使用.im使用翻新和viewmodel ......实际上，scenario是登录的onclick显示了过渡(从登录页面到登录页面)，但是并没有移到从登录页面到首页....

my login is not working ..im using retrofit and viewmodel ...actually scenerio is onclick of login shows the transition(loginpage to loginpage) but it is not moving to loginpage to homepage....

此方法model.ResponseData.observe没有得到呼叫

我不知道我要去哪里哪里

i dont know where im going wrong

需要帮助谢谢

登录活动:-

class LoginActivity : AppCompatActivity() {
lateinit var model: LoginViewModel

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.login_activity)

    val button = findViewById<ImageView>(R.id.plusbutton)
    val forgotpassword=findViewById<TextView>(R.id.forgotpassword)
    button.setOnClickListener {
        val i = Intent(applicationContext, RegisterActivity::class.java)
        startActivity(i)
    }
    forgotpassword.setOnClickListener{
        val i = Intent(applicationContext, ForgotPassword::class.java)
        startActivity(i)
    }
    model = ViewModelProvider(this)[LoginViewModel::class.java]

    model.ResponseData.observe(this, object : Observer<LoginResponse?> {
        override fun onChanged(t: LoginResponse?) {
            val intent = Intent(applicationContext, HomeActivity::class.java)
            intent.flags =
                Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
            startActivity(intent)
            finish()
        }

    })
    loginbtn.setOnClickListener {
        val email = loginuser.text.toString().trim()
        val password = loginpassword.text.toString().trim()

        if (email.isEmpty()) {
            Toast.makeText(
                applicationContext, "Data is missing", Toast.LENGTH_LONG
            ).show()
            loginuser.error = "Email required"
            loginuser.requestFocus()
            return@setOnClickListener
        } else if (password.isEmpty()) {
            loginpassword.error = "Password required"
            loginpassword.requestFocus()
            return@setOnClickListener
        }
        else {
       model.loadAccountData(email,password)

        }
    }
}}

viewmodel:-

viewmodel:--

class LoginViewModel(context: Application,private val savedStateHandle: SavedStateHandle) : AndroidViewModel(context) {
private var _aResponseData = MutableLiveData<LoginResponse?>()

val user: MutableLiveData<String> = savedStateHandle.getLiveData("user", "")
val password: MutableLiveData<String> = savedStateHandle.getLiveData("password", "")
val ResponseData: MutableLiveData<LoginResponse?>



get() {

    if (_aResponseData == null) {
        _aResponseData = MutableLiveData<LoginResponse?>()
        loadAccountData(user.toString(), password.toString())
    }
    return _aResponseData
}


fun loadAccountData(email:String, password:String) {


    RetrofitClient.instance.userLogin(email, password)
        .enqueue(object : Callback<LoginResponse> {
            override fun onFailure(call: Call<LoginResponse>, t: Throwable) {
                Log.d("res", "" + t)
                _aResponseData.value = null
            }

            override fun onResponse(
                call: Call<LoginResponse>,
                response: Response<LoginResponse>
            ) {
                var res = response

                if (res.body()?.status == 200) {
                    _aResponseData.value = response.body()
                } else {
                    try {
                        val jObjError =
                            JSONObject(response.errorBody()!!.string())
                        Toast.makeText(
                            getApplication(),
                            jObjError.getString("user_msg"),
                            Toast.LENGTH_LONG
                        ).show()
                    } catch (e: Exception) {
                        Log.e("errorrr", e.message)
                    }
                }
            }
        })
}
}

推荐答案

在讨论和调试之后，问题似乎不在观察者上，而是实际上是在通过改型对API调用的响应进行解析期间.

After discussion and debugging, looks like issue was not on observer but actually during parsing of response from API call via retrofit.

_aResponseData.value = response.body()

此处response.body()无法将响应解析为LoginResponse类对象，这最终导致了导航方面的更多问题.

Here response.body() was not able to parse response as LoginResponse class object which was eventually causing issue further more on navigation.

解析中的固定问题可以帮助O.P.通过调试主要问题进行调试.

Fixing issue on parsing helps O.P. through debugging on main concern.

这篇关于使用改造和viewmodel的用户登录不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！