小编Har*_*ain的帖子

在drawable v21中已经有一个drawable文件，也可以实现波纹效果。那么为什么要在已经获取矢量文件时使用drawable v24。

以下是xml文件ic_launcher_foreground.xml。

  <vector xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:aapt="http://schemas.android.com/aapt"
             android:width="108dp"
             android:height="108dp"
             android:viewportHeight="108"
             android:viewportWidth="108">
        <path
             android:fillType="evenOdd"
            android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
             android:strokeColor="#00000000"
             android:strokeWidth="1">
             <aapt:attr name="android:fillColor">
                 <gradient
                     android:endX="78.5885"
                     android:endY="90.9159"
                     android:startX="48.7653"
                     android:startY="61.0927"
                     android:type="linear">
                     <item
                         android:color="#44000000"
                         android:offset="0.0"/>
                     <item
                        android:color="#00000000"
                         android:offset="1.0"/>
                 </gradient>
             </aapt:attr>
         </path>
         <path
             android:fillColor="#FFFFFF"
             android:fillType="nonZero"
             android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11
 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81
 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76
 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
             android:strokeColor="#00000000"
             android:strokeWidth="1"/>
     </vector>

在styles.xml中从android中选择Theme时会出现错误.我附上了与此相关的截图. styles.xml文件截图中的错误.请点击查看.

另一个问题是actionBarSize.在布局文件中,从android本身获取actionBarSize时会出错.我已经附上了与此相关的截图. ？attr/actionBarSize给出错误.请点击此链接查看.

我也检查并搜索了关于此的答案,但找不到可以解决这个问题的答案.

我是 kotlin android 的新手。我已经为 recyclerview 创建了适配器。但我无法为每个 recyclerview 项目执行点击事件。我需要参考代码的解释。请帮助我做到这一点。提前致谢。这是我的代码供您参考。

  class CustomAdapter(val readerList: ReaderResponse, mainActivity: 
    MainActivity,val btnlistener: BtnClickListener) : 
    RecyclerView.Adapter<CustomAdapter.ViewHolder>() {


    companion object {
        var mClickListener: BtnClickListener? = null
    }

    override fun onCreateViewHolder(viewgroup: ViewGroup, index: Int): ViewHolder 
    {

        val view=LayoutInflater.from(viewgroup?.context).inflate(R.layout.reader_list,viewgroup,false)
        return ViewHolder(view)
    }

    override fun getItemCount(): Int {
        return readerList.results.size

    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {

        mClickListener = btnlistener
        val item = readerList

        val reader:ReaderData = readerList.results[position]
        /*p0?.imageview?.text=reader.readerIcon*/
        holder?.reader_status?.text=reader.readerStatus
        holder?.ward_name?.text=reader.wardName
        holder?.reader_id?.text=reader.readerID
        holder?.reader_name?.text=reader.readerName
        holder?.reader_location?.text=reader.readerLocation


        if (reader.readerStatus.toLowerCase().equals("yes")){
            holder.reader_name.setTextColor(Color.parseColor("#24a314"))
        }else if (reader.readerStatus.toLowerCase().equals("no")){

            holder.reader_name.setTextColor(Color.parseColor("#f4312d")) …