使用 sharedpreferences 保存按钮点击状态

Question

我正在使用 mvvm、coroutine、kodein 和 DataBinding.i 在我的主界面中设置登录页面 activity 在用户按下登录按钮后评论 Activity 将变得明显。

我在评论中设置了recyclerview activity。在每个项目的末尾，我都问了一个问题，该评论是否有帮助。 if not press no else press yes.i 使用共享首选项来保存按钮状态。例如，当我单击是按钮时，yesclicked（布尔变量）将保存在 sharedpref 中。到这里一切正常。

问题 --> 我保存了那个状态，然后我在 recyclerview 的 onBindViewHolder 方法中得到 YesButtonState() class 并且我说当 activity 重新创建时将是按钮的背景颜色更改为 #D5FFD7你之前点击这个的目的

但什么也没发生，也没用

此代码用于共享首选项

 val SPP_NAME = "ButtonState"
var buttonLocalState: SharedPreferences = context.getSharedPreferences(SPP_NAME, Context.MODE_PRIVATE)

fun setYesButtonState(isClicked: Boolean) {
    val userLocalDatabaseEditor: SharedPreferences.Editor = buttonLocalState.edit()
    userLocalDatabaseEditor.putBoolean("yesClicked", isClicked)
    userLocalDatabaseEditor.apply()
}

fun setNoButtonState(isClicked: Boolean) {
    val userLocalDatabaseEditor: SharedPreferences.Editor = buttonLocalState.edit()
    userLocalDatabaseEditor.putBoolean("noClicked", isClicked)
    userLocalDatabaseEditor.apply()
}

fun getYesButtonState(): Boolean? {
    if (buttonLocalState.getBoolean("yesClicked", false) == false) {
        return null
    } else {
        return true
    }

}

fun getNoButtonState(): Boolean? {
    if (buttonLocalState.getBoolean("noClicked", false) == false) {
        return null
    } else {
        return true
    }
}

fun clearButtonState() {
    val userLocalDatabaseEditor: SharedPreferences.Editor = buttonLocalState.edit()
    userLocalDatabaseEditor.clear()
    userLocalDatabaseEditor.apply()
}

这是针对回收站的 class:

        //yes button clicked
        yesbtn.setOnClickListener {
            yesClicked = true
            localStore.clearButtonState()
            localStore.setYesButtonState(yesClicked)
            val Helpful = 1

            if (localStore.getYesButtonState() == true) {
                nobtn.setBackgroundColor(Color.WHITE)
                startColorAnimation(yesbtn)
                activity.handler.postDelayed({
                    yesbtn.setBackgroundColor(Color.parseColor("#D5FFD7"))
                    nobtn.isClickable = true
                }, 892.25.toLong())
            }

            try {
                viewModel.deleteperson(
                    localStore.getUserName().toString(),
                    currentItem.id
                ).observe(mlifecycleOwner, Observer {

                })
            } catch (e: IllegalStateException) {
                e.fillInStackTrace()
            }


            viewModel.feedback(
                currentItem.id,
                localStore.getUserName().toString(),
                currentItem.description,
                Helpful
            ).observe(mlifecycleOwner, Observer {

            })
            Toast.makeText(
                context,
                "thanks for your feedback",
                Toast.LENGTH_SHORT
            ).show()
            yesbtn.isClickable = false

        }


        //no button clicked
        nobtn.setOnClickListener {
            noClicked = true
            localStore.clearButtonState()
            localStore.setNoButtonState(noClicked)
            val Helpful = 0


            if (localStore.getNoButtonState() == true) {
                yesbtn.setBackgroundColor(Color.WHITE)
                startColorAnimation(nobtn)
                activity.handler.postDelayed({
                    nobtn.setBackgroundColor(Color.parseColor("#D5FFD7"))
                    yesbtn.isClickable = true
                }, 892.25.toLong())
            }



            try {
                viewModel.deleteperson(
                    localStore.getUserName().toString(),
                    currentItem.id
                ).observe(mlifecycleOwner, Observer {

                })
            } catch (e: IllegalStateException) {
                e.fillInStackTrace()
            }
            viewModel.feedback(
                currentItem.id,
                localStore.getUserName().toString(),
                currentItem.description,
                Helpful
            ).observe(mlifecycleOwner, Observer {

            })
            Toast.makeText(
                context,
                "please tell us why",
                Toast.LENGTH_SHORT
            ).show()
            it.isClickable = false
        }

我哪里做错了。感谢您的帮助

Answer 1

试试这个单击按钮后 .. 调用 notifyDataSetChanged();在你的适配器中 class

使用 sharedpreferences 保存按钮点击状态

useing shared preferences to save Button click state

java

android

kotlin

data-binding

sharedpreferences