在我的RecyclerView按钮列表中->打开单击所选按钮尝试更改背景颜色(通过setBackgroundResource)。但是,当我单击其他按钮时,以前选择的按钮仍然保留背景颜色,我想将其设置为默认颜色
Please click to find the UI Image here
//this is Button in user.xml
<Button
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/user_button"
android:background="@drawable/border_button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
//my adapter class
class ButtonAdapter() : RecyclerView.Adapter<ButtonAdapter.ViewHolder>() {
private val dataTest = arrayListOf("user1", "user2" , "user3" , "user4")
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view: View = LayoutInflater.from(parent.context).inflate(R.layout.user,parent , false)
return ViewHolder(view)
}
override fun getItemCount() = dataTest.size
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.bindItem(dataTest[position])
}
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
fun bindItem(item : String) {
itemView.user_button?.text = item // this will be text in Button
itemView.user_button?.setOnClickListener{
itemView.user_button.setBackgroundResource(R.drawable.border_background_chnaged)
}
}
}