Question

多次单击“登录”按钮后，Livedata对象中的改装响应未更新

我已经创建了一个存储库来更新实时数据，但是它不起作用

首先，我输入了错误的凭据，然后输入了正确的凭据。尽管如此，我得到的回应还是一样

LoginViewModel.kt

fun getNumber(phone: String, password: String): MutableLiveData<String> {
        Log.i(TAG, "Get number")
        if (responseData == null) {
            responseData = MutableLiveData<String>()    
            this.phone = phone
            this.password = password
            createNumber()
        }
        return responseData as MutableLiveData<String>
    }


fun createNumber() {

    var apiServices = APIClient.client.create(APIInterface::class.java)
    val call = apiServices.getdata(phone, password)

    call.enqueue(object : Callback<ResponseBody> {
        override fun onFailure(call: Call<ResponseBody>, t: Throwable) {
            responseData?.value = t.message

        }

        override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {

            responseData?.value = response.body()?.string()
        }
    })
}

LoginActivity.kt

    btn_login!!.setOnClickListener {

        if (edit_userName!!.editableText.toString() != ""
            && edit_passWord!!.editableText.toString() != "") {
            layout_progress!!.visibility = View.VISIBLE;

                model?.getNumber(edit_userName!!.editableText.trim().toString(), edit_passWord!!.editableText.trim().toString())
                    ?.observe(this, Observer {

                        var jsonobject: JSONObject = JSONObject(it)

                        var message: String = jsonobject.getString("message")

                        if (message.equals("Login Success")) {
                            startActivity(Intent(this, HomeActivity::class.java))
                            finish()
                        } else {
                            Toast.makeText(
                                this,
                                "You are not registered User....Please Contact Admin",
                                Toast.LENGTH_LONG
                            ).show()
                            layout_progress?.visibility = View.GONE
                        }
                    })
        } else {
            Toast.makeText(applicationContext, "Username and Password should not be empty", Toast.LENGTH_LONG).show()
        }
    }

Answer 1

您可以这样更改代码

fun getNumber(): MutableLiveData<String> {

        if (responseData == null) {
            responseData = MutableLiveData<String>()    
        }
        return responseData as MutableLiveData<String>
    }


fun createNumber(phone: String, password: String) {

    var apiServices = APIClient.client.create(APIInterface::class.java)
    val call = apiServices.getdata(phone, password)

    call.enqueue(object : Callback<ResponseBody> {
        override fun onFailure(call: Call<ResponseBody>, t: Throwable) {
            responseData?.value = t.message

        }

        override fun onResponse(call: Call<ResponseBody>, response: Response<ResponseBody>) {

            responseData?.value = response.body()?.string()
        }
    })
}

 model?.getNumber()
                    ?.observe(this, Observer {

                        var jsonobject: JSONObject = JSONObject(it)

                        var message: String = jsonobject.getString("message")

                        if (message.equals("Login Success")) {
                            startActivity(Intent(this, HomeActivity::class.java))
                            finish()
                        } else {
                            Toast.makeText(
                                this,
                                "You are not registered User....Please Contact Admin",
                                Toast.LENGTH_LONG
                            ).show()
                            layout_progress?.visibility = View.GONE
                        }
                    })

 btn_login!!.setOnClickListener {

          model?.currentNumber(edit_userName!!.editableText.trim().toString(), edit_passWord!!.editableText.trim().toString())

    }

单击登录按钮超过一次后，Livedata不会更新

1 个答案: