Question

我试图在嵌套中添加getSharedPreferences（）方法类。我尝试了很多方法但未能添加此方法 theCustomSlide2类。请指导我如何打电话 CustomSlide2类中的getSharedPreferences（）方法。我需要从CustomSlide2 Class更新标志。

 package com.bangla.os.activity

 import agency.tango.materialintroscreen.MaterialIntroActivity
 import agency.tango.materialintroscreen.SlideFragment
 import agency.tango.materialintroscreen.SlideFragmentBuilder
 import agency.tango.materialintroscreen.widgets.OverScrollViewPager
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import com.bangla.os.R

 class InitActivity : MaterialIntroActivity() {

     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

         if (!getSharedPreferences("quickSettings", Context.MODE_PRIVATE).getBoolean("firstStart", true)) {
             skipStart()
             return
         }

         val overScrollLayout = findViewById<View>(agency.tango.materialintroscreen.R.id.view_pager_slides) as OverScrollViewPager
         val viewPager = overScrollLayout.overScrollView
         viewPager.overScrollMode = View.OVER_SCROLL_NEVER

         addSlide(CustomSlide1())
         addSlide(CustomSlide2())
         addSlide(CustomSlide3())

     }

     override fun onFinish() {
       super.onFinish()
        setState()
     }

     private fun skipStart() {
        setState()
        finish()
     }

     private fun setState() {
        val intent = Intent(this@InitActivity, Home::class.java)
        intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION)
        startActivity(intent)
     }

class CustomSlide1 : SlideFragment() {
    override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View? {
            val view = inflater.inflate(R.layout.intro_custom_layout, container, false)
            return view
     }
      override fun backgroundColor(): Int = R.color.op_blue
      override fun buttonsColor(): Int = R.color.intro_button_color3
 }


 class CustomSlide2 : SlideFragment() {

   getSharedPreferences("quickSettings", Context.MODE_PRIVATE).edit().putBoolean("firstStart", false).apply()
   override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View? {
            val view = inflater.inflate(R.layout.intro_custom_layout_option, container, false)
            return view
    }
    override fun backgroundColor(): Int = R.color.op_blue
    override fun buttonsColor(): Int = R.color.intro_button_color3
 }



 class CustomSlide3 : SlideFragment() {
        override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View? {
              val view = inflater.inflate(R.layout.intro_custom_layout_confirm, container, false)
              return view
        }
        override fun backgroundColor(): Int = R.color.op_blue
         override fun buttonsColor(): Int = R.color.intro_button_color3
   }

 }

Answer 1

你必须在函数内添加getSharedPreferences（）语句。

类似的东西：

 class CustomSlide2 : SlideFragment() {

     override fun onCreateView(inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?): View? {
          val view = inflater.inflate(R.layout.intro_custom_layout_option, container, false)
          activity.getSharedPreferences("quickSettings", Context.MODE_PRIVATE).edit().putBoolean("firstStart", false).apply()
          return view
      }

      override fun backgroundColor(): Int = R.color.op_blue
      override fun buttonsColor(): Int = R.color.intro_button_color3
 }

Kotlin如何在嵌套类中添加getSharedPreferences（）方法

1 个答案: