Android行业和职业联动选择列表

Android行业和职业联动选择列表

行业和职业往往需要联动的，一般行业在左，职业在右。

一、思路

用两个RecycleView

二、效果图：

三、关键代码：

class MainActivity : AppCompatActivity() {

    private lateinit var data : ProfessionBean
    private val data1 = mutableListOf<SubProfession>()   // 行业数据
    var position1 = 0  // 选中职业所在的行业位置
    var currentPosition1 = 0  // 当前浏览的行业位置
    private val data2 = mutableListOf<MutableList<SubProfession>>()  // 职业数据
    var position2 = 0  // 职业选中位置
    lateinit var industryAdapter:ProfessionAdapter  // 行业
    lateinit var professionAdapter:ProfessionAdapter    // 职业

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

        val rvProfession = findViewById<RecyclerView>(R.id.rv_profession)
        val rvIndustry = findViewById<RecyclerView>(R.id.rv_industry)

        data = UtilHelper.JsonToObject(UtilHelper.getJson(this,"job.json"),ProfessionBean::class.java)

        data.professionList?.let { bean ->
            if(bean.isNotEmpty()){
                for((index1,profession) in bean.withIndex()){
                    val nameData = mutableListOf<SubProfession>()

                    profession.subProfessionList?.let { professionNameBean ->
                        for((index2,professionName) in professionNameBean.withIndex()){
                            nameData.add(SubProfession(professionName.name?:"",false))
                        }
                    }
                    data1.add(SubProfession(profession.name?:"",index1 == 0))
                    data2.add(nameData)
                }
            }else{
                finish()
            }
        }?: finish()

        rvProfession.layoutManager = FlowLayoutManager()
        professionAdapter = ProfessionAdapter(R.layout.item_profession,1){
            if(data2.size > position1 && data2[position1].size > position2){
                data2[position1][position2].isSelect = false
            }
            position1 = currentPosition1
            position2 = it
            data2[position1][position2].isSelect = true
            //selectList[0] = data1[position1].name?:""
            //selectList[1] = data2[position1][position2].name?:""
            // 职业列表刷单个会闪屏,所以全刷了
            professionAdapter.notifyDataSetChanged()

        }
        rvProfession.adapter = professionAdapter
        if(data2.size > position1){
            professionAdapter.setNewInstance(data2[position1])
        }

        rvIndustry.layoutManager = LinearLayoutManager(this,
            RecyclerView.VERTICAL,false)
        industryAdapter = ProfessionAdapter(R.layout.item_industry,0){
            currentPosition1 = it
            if(data2.size > currentPosition1){
                professionAdapter.setNewInstance(data2[currentPosition1])
            }
        }
        rvIndustry.adapter = industryAdapter
        industryAdapter.setNewInstance(data1)
    }
}

四、项目demo源码结构图：

有问题或者需要完整源码demo的可以看简介联系我，也可以私信我，我每天都看私信的