Question

我通过构建应用程序来学习Kotlin，现在，我正在尝试为RecyclerView创建适配器。但是，我为ViewGroup选择的名称标记为class RecyclerAdapter: RecyclerView.Adapter<RecyclerAdapter.PosterHolder>(){ override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): { TODO("not implemented") //To change body of created functions use File | Settings | File Templates. } override fun getItemCount(): Int { TODO("not implemented") //To change body of created functions use File | Settings | File Templates. } override fun onBindViewHolder(holder: RecyclerAdapter.PosterHolder, position: Int) { TODO("not implemented") //To change body of created functions use File | Settings | File Templates. } } class PosterHolder (v: View) : RecyclerView.ViewHolder(v), View.OnClickListener { override fun onClick(p0: View?) { TODO("not implemented") //To change body of created functions use File | Settings | File Templates. } }。我对Kotlin来说相当新，所以我知道我会犯一个愚蠢的错误，但在这种情况下，我无法弄清楚我做错了什么。

   <?xml version="1.0" encoding="UTF-8"?>
<ehcache>
 <cache
    name="path.ENTITY"
    maxEntriesLocalHeap="10000"
    eternal="false"
    timeToIdleSeconds="300"
    timeToLiveSeconds="600"
    <persistence strategy="localTempSwap"/>
 />
</ehcache>

Answer 1

尝试此修复：

class RecyclerAdapter : RecyclerView.Adapter<RecyclerAdapter.PosterHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PosterHolder? {
        return null
    }

    override fun onBindViewHolder(holder: PosterHolder, position: Int) {

    }

    override fun getItemCount(): Int {
        return 0
    }

    inner class PosterHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
}

要使用Android Studio将java文件转换为kotlin文件，请选择 Code-＆gt;将java文件转换为kotlin文件。

Answer 2

我真的不得不重新实现这些功能。我认为这是一个Android Studio问题，而不是Kotlin。这是我最新的代码：

class RecyclerAdapter: RecyclerView.Adapter<PosterHolder>(){

    override fun onBindViewHolder(holder: PosterHolder, position: Int) {
        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PosterHolder{
        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    }

    override fun getItemCount(): Int {
        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    }

}

class PosterHolder (v: View) : RecyclerView.ViewHolder(v), View.OnClickListener {
    override fun onClick(p0: View?) {
        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    }
}

RecyclerView无法识别视图持有者

2 个答案: