我有2个活动，当点击第一个活动转换为第二个活动时，它是Main2Activity
在第二个活动中我试图制作许多ListView，每个都包含图片和文字，每个ListView在一个特定的适配器中，但我遇到了代表问题（adapterType1，{ {1}}）两个适配器（adapterType2，adapterType1）返回相同的值（adapterType2），我想为（adapterType1）返回两个不同的结果（adapterType1）？
以下是MainActivity.kt
adapterType2这是Main2Activity.kt
class MainActivity : AppCompatActivity() {
var adapter:FoodAdapter?=null
var listOfFoods =ArrayList<Food>()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(layout.activity_main)
// load foods
listOfFoods.add(Food("Coffee"," Coffee preparation is", a))
listOfFoods.add(Food("Coffee"," Coffee preparation is", b))
listOfFoods.add(Food("Coffee"," Coffee preparation is", c))
listOfFoods.add(Food("Coffee"," Coffee preparation is", d))
adapter= FoodAdapter(this,listOfFoods)
gvListFood.adapter =adapter
}
class FoodAdapter: BaseAdapter {
var listOfFood= ArrayList<Food>()
var context: Context?=null
constructor(context:Context,listOfFood:ArrayList<Food>):super(){
this.context=context
this.listOfFood=listOfFood
}
override fun getView(p0: Int, p1: View?, p2: ViewGroup?): View? {
val food = this.listOfFood[p0]
var inflator = context!!.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
var foodView= inflator.inflate(layout.food_ticket,null)
foodView.ivFoodImage.setImageResource(food.image!!)
foodView.ivFoodImage.setOnClickListener {
val intent = Intent(context, Main2Activity::class.java)
intent.putExtra(Main2Activity.EXTRA_ADAPTER_MODE, AdapterType.ADAPTER_TYPE_2.ordinal)
intent.putExtra("name", food.name!!)
intent.putExtra("des", food.des!!)
intent.putExtra("image", food.image!!1
context!!.startActivity(intent)
}
return foodView
}
override fun getItem(p0: Int): Any {
return listOfFood[p0]
}
override fun getItemId(p0: Int): Long {
return p0.toLong()
}
override fun getCount(): Int {
return listOfFood.size
}
}
}
这是activitymain2.xml
class Main2Activity : AppCompatActivity() {
companion object {
val EXTRA_ADAPTER_MODE = "extra_adapter_mode"
}
var adapter1: FoodAdapter1?= null
var adapter2: FoodAdapter2? = null
var listOfFoods2 = ArrayList<Food>()
var listOfFoods3 = ArrayList<Food>()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(activity_main2)
val bundle = intent.extras
val adapterTypeOrdinal = intent.getIntExtra(EXTRA_ADAPTER_MODE, 0) // 0 is the default value
val type = AdapterType.fromOrdinal(ordinal = adapterTypeOrdinal)
val name = bundle.getString("name")
val des = bundle.getString("des")
val image = bundle.getInt("image")
ivFoodImage2?.let {
it.setImageResource(image)
}
tvName2?.let {
it.text = name
}
tvDes2?.let {
it.text = des
}
// load foods2
listOfFoods2.add(Food("Coffee", " Coffee1 preparation is", R.drawable.a))
listOfFoods2.add(Food("Coffee", " Coffee2 preparation is", R.drawable.b))
// load foods3
listOfFoods3.add(Food("Coffee", " Coffee3 preparation is", R.drawable.c))
listOfFoods3.add(Food("Coffee", " Coffee4 preparation is", R.drawable.d))
var ADAPTER_TYPE_1=adapter1
var ADAPTER_TYPE_2=adapter2
lvFoods2.adapter = when (lvFoods2.adapter) {
ADAPTER_TYPE_1 -> FoodAdapter1(listOfFoods2, this).also { ADAPTER_TYPE_1 = it }
ADAPTER_TYPE_2 -> FoodAdapter2(listOfFoods3, this).also { ADAPTER_TYPE_2 = it }
else -> lvFoods2.adapter
}
}
class FoodAdapter1 : BaseAdapter {
var context: Context? = null
var listOfFoodsLocal2 = ArrayList<Food>()
constructor(listOfFoods2: ArrayList<Food>, context: Context) : super() {
this.listOfFoodsLocal2 = listOfFoods2
this.context = context
}
override fun getView(p0: Int, p1: View?, p2: ViewGroup?): View {
val food = this.listOfFoodsLocal2[p0]
var inflator = context!!.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val foodView = inflator.inflate(ticket2, null)
foodView.ivFoodImage2?.let {
it.setImageResource(food.image!!)
}
foodView.tvName2?.let {
it.text = food.name!!
}
foodView.tvDes2?.let {
it.text = food.des!!
}
foodView.ivFoodImage2.setOnClickListener {
//move to next
val intent = Intent(context, FoodDetails::class.java)
intent.putExtra("name", food.name!!)
intent.putExtra("des", food.des!!)
intent.putExtra("image", food.image!!)
context!!.startActivity(intent)
}
return foodView
}
override fun getItem(p0: Int): Any {
return listOfFoodsLocal2[p0]
}
override fun getItemId(p0: Int): Long {
return p0.toLong()
}
override fun getCount(): Int {
return listOfFoodsLocal2.size
}
}
class FoodAdapter2 : BaseAdapter {
var context: Context? = null
var listOfFoodsLocal3 = ArrayList<Food>()
constructor(listOfFoods3: ArrayList<Food>, context: Context) : super() {
this.listOfFoodsLocal3 = listOfFoods3
this.context = context
}
override fun getView(p0: Int, p1: View?, p2: ViewGroup?): View {
val food = this.listOfFoodsLocal3[p0]
var inflator = context!!.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
val foodView = inflator.inflate(ticket2, null)
foodView.ivFoodImage2?.let {
it.setImageResource(food.image!!)
}
foodView.tvName2?.let {
it.text = food.name!!
}
foodView.tvDes2?.let {
it.text = food.des!!
}
foodView.ivFoodImage2.setOnClickListener {
//move to next
val intent = Intent(context, FoodDetails::class.java)
intent.putExtra("name", food.name!!)
intent.putExtra("des", food.des!!)
intent.putExtra("image", food.image!!)
context!!.startActivity(intent)
}
return foodView
}
override fun getItem(p0: Int): Any {
return listOfFoodsLocal3[p0]
}
override fun getItemId(p0: Int): Long {
return p0.toLong()
}
override fun getCount(): Int {
return listOfFoodsLocal3.size
}
}
}
这是ticket2.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/gray"
android:orientation="vertical"
tools:context="com.marzadmz.startup.Main2Activity">
<ListView
android:id="@+id/lvFoods2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/gray" />
</LinearLayout>