这里是一个非常新手的程序员，而不是一个好的英文打字机。我正在尝试为之前使用 PurchaseHistoryResponseListener 进行的购买创建检查器。当检查器发现某些东西时，它会添加到列表中，然后将这些数据提供给 recyclerview_MYBook。问题是，在启动应用程序时，数据完美地流过 recyclerview_MYBook，但是当移动到不同的活动并通过不同的方法（按钮单击）返回上一个活动时，recyclerview_MYBook 上的数据不显示，只有通过常规的后退按钮，recyclerview 上的数据才会显示出来。下面是我的菜鸟代码
类 MainActivity : AppCompatActivity(), PurchasesUpdatedListener {
private lateinit var billingClient: BillingClient
private lateinit var blogadapternew: BlogRecyclerAdapterNew
private lateinit var blogadapterpremium: BlogRecyclerAdapterPremium
private lateinit var blogadapterfree: BlogRecyclerAdapterFree
private lateinit var blogadaptermybook: BlogRecyclerAdapterMyBook
private lateinit var auth: FirebaseAuth
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
auth = FirebaseAuth.getInstance()
//FirebaseAuth.getInstance().signOut()
window.setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE)
window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN)
setContentView(R.layout.activity_main)
recycler_viewNew.layoutManager = LinearLayoutManager(this, RecyclerView.HORIZONTAL,false)
recycler_viewNew.adapter= BlogRecyclerAdapterNew()
recycler_viewPremium.layoutManager = LinearLayoutManager(this,RecyclerView.HORIZONTAL,false)
recycler_viewPremium.adapter= BlogRecyclerAdapterPremium()
recycler_viewFree.layoutManager = LinearLayoutManager(this,RecyclerView.HORIZONTAL,false)
recycler_viewFree.adapter= BlogRecyclerAdapterFree()
recycler_viewMyBook.layoutManager = LinearLayoutManager(this,RecyclerView.HORIZONTAL,false)
recycler_viewMyBook.adapter= BlogRecyclerAdapterMyBook()
if (supportActionBar != null)
supportActionBar?.hide()
setupBillingClient()
initrecyclerView()
initrecyclerViewPremium()
initrecyclerViewFree()
initrecyclerViewMyBook()
addDataSetNew()
addDataSetPremium()
addDataSetFree()
Logo.setOnClickListener{
val intent = Intent(MonstaLogo.context, MainActivity::class.java)
MonstaLogo.context.startActivity(intent)
}
MainFeaturedButton.setOnClickListener {
val intent = Intent(MainFeaturedButton.context, MainActivity::class.java)
MainFeaturedButton.context.startActivity(intent)
}
MainNewButton.setOnClickListener {
val intent = Intent(MainNewButton.context, NewActivity::class.java)
MainNewButton.context.startActivity(intent)
}
NewMore.setOnClickListener{
val intent = Intent(NewMore.context, NewActivity::class.java)
NewMore.context.startActivity(intent)
}
MainPremiumButton.setOnClickListener {
val intent = Intent(MainPremiumButton.context, PremiumActivity::class.java)
MainPremiumButton.context.startActivity(intent)
}
PremiumMore.setOnClickListener{
val intent = Intent(PremiumMore.context, PremiumActivity::class.java)
PremiumMore.context.startActivity(intent)
}
MainFreeButton.setOnClickListener {
val intent = Intent(MainFreeButton.context, FreeActivity::class.java)
MainFreeButton.context.startActivity(intent)
}
FreeMore.setOnClickListener {
val intent = Intent(FreeMore.context, FreeActivity::class.java)
FreeMore.context.startActivity(intent)
}
MainMyBookButton.setOnClickListener {
val intent = Intent(MainMyBookButton.context, MyBookActivity::class.java)
MainMyBookButton.context.startActivity(intent)
}
MyBookMore.setOnClickListener {
val intent = Intent(MyBookMore.context, MyBookActivity::class.java)
MyBookMore.context.startActivity(intent)
}
}
private fun setupBillingClient() {
billingClient = BillingClient.newBuilder(this)
.enablePendingPurchases()
.setListener(this)
.build()
billingClient.startConnection(object : BillingClientStateListener {
override fun onBillingSetupFinished(billingResult: BillingResult) {
if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {
// The BillingClient is ready. You can query purchases here.
println("Setup Billing Done")
PurchaseHistoryResponseListener()
}
}
override fun onBillingServiceDisconnected() {
// Try to restart the connection on the next request to
// Google Play by calling the startConnection() method.
println("Failed")
setupBillingClient()
println("Restart Connection")
}
})
}
override fun onPurchasesUpdated(
billingResult: BillingResult?,
purchases: MutableList<Purchase>?
) {
TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
}
private fun PurchaseHistoryResponseListener (){
billingClient.queryPurchaseHistoryAsync(BillingClient.SkuType.INAPP) {
responseCode, result ->
// println("queryPurchasesAsync INAPP results: ${result?.size}")
// println("Getting Purchase History")
println("$result")
val dataMyBook1 = DataSourceMyBook.createDataSet()
if ("testcode1" in result.toString()) {
println("found it 1")
dataMyBook1.add((BlogPost( "BookName","Link","No")))
}
if ("testcode2" in result.toString()) {
println("found it 2")
dataMyBook1.add((BlogPost( "BookName","Link","No")))
}
if ("testcode3" in result.toString()) {
println("found it 3")
dataMyBook1.add((BlogPost( "BookName","Link","No")))
}
blogadaptermybook.submitList(dataMyBook1)
println(dataMyBook1)
}
}
private fun addDataSetNew(){
val dataNew = DataSourceNew.createDataSet()
blogadapternew.submitList(dataNew)
}
private fun addDataSetPremium(){
val dataPremium = DataSourcePremium.createDataSet()
blogadapterpremium.submitList(dataPremium)
}
private fun addDataSetFree(){
val dataFree = DataSourceFree.createDataSet()
blogadapterfree.submitList(dataFree)
}
/*private fun addDataSetMyBook(){
val dataMyBook1 = DataSourceMyBook.createDataSet()
blogadaptermybook.submitList(dataMyBook1)
}*/
/*private fun addDataSetMyBook(){
val dataMyBook1 = DataSourceMyBook.createDataSet()
billingClient.queryPurchaseHistoryAsync(BillingClient.SkuType.INAPP) {
responseCode, result ->
println("$result")
if ("bbbg_s2_c1_testcode1" in result.toString()){
dataMyBook1.add((BlogPost( "Mini Comic 1","Link","No")))
}
if ("bbbg_s2_c1_testcode2" in result.toString()){
dataMyBook1.add((BlogPost( "Mini Comic 2","Link","No")))
}
if ("bbbg_s2_c1_testcode3" in result.toString()){
dataMyBook1.add((BlogPost( "Mini Comic 3","Link","No")))
}
blogadaptermybook.submitList(dataMyBook1)
}}*/
/*dataMyBook.add((BlogPost( "Mini Comic 1","Link","No")))
dataMyBook.add((BlogPost( "Mini Comic 1","Link","No")))
dataMyBook.add((BlogPost( "Mini Comic 1","Link","No")))*/
private fun initrecyclerView(){
recycler_viewNew.apply {
layoutManager = LinearLayoutManager(this@MainActivity,RecyclerView.HORIZONTAL,false)
val topSpacingItemDecoration = TopSpacingItemDecoration(padding = 30)
addItemDecoration(topSpacingItemDecoration)
blogadapternew = BlogRecyclerAdapterNew()
adapter = blogadapternew
}
}
private fun initrecyclerViewPremium(){
recycler_viewPremium.apply {
layoutManager = LinearLayoutManager(this@MainActivity,RecyclerView.HORIZONTAL,false)
val topSpacingItemDecoration = TopSpacingItemDecoration(padding = 30)
addItemDecoration(topSpacingItemDecoration)
blogadapterpremium = BlogRecyclerAdapterPremium()
adapter = blogadapterpremium
}
}
private fun initrecyclerViewFree(){
recycler_viewFree.apply {
layoutManager = LinearLayoutManager(this@MainActivity,RecyclerView.HORIZONTAL,false)
val topSpacingItemDecoration = TopSpacingItemDecoration(padding = 30)
addItemDecoration(topSpacingItemDecoration)
blogadapterfree = BlogRecyclerAdapterFree()
adapter = blogadapterfree
}
}
private fun initrecyclerViewMyBook(){
recycler_viewMyBook.apply {
layoutManager =
LinearLayoutManager(this@MainActivity, RecyclerView.HORIZONTAL, false)
val topSpacingItemDecoration = TopSpacingItemDecoration(padding = 30)
addItemDecoration(topSpacingItemDecoration)
blogadaptermybook = BlogRecyclerAdapterMyBook()
adapter = blogadaptermybook
}
}
public override fun onStart() {
super.onStart()
val currentUser = auth.currentUser
updateUI(currentUser)
}
private fun updateUI(currentUser: FirebaseUser?) {
if (currentUser != null) {
AccountSettingButton.setImageResource(R.drawable.profileicon)
}
}
}
这是适配器
类 BlogRecyclerAdapterMyBook : RecyclerView.Adapter() {
private var items: List<BlogPost> = ArrayList()
private var items2: List<BlogPost> = ArrayList()
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
return BlogViewHolder(
LayoutInflater.from(parent.context).inflate(
R.layout.layout_blog_list_item_mybook,
parent,
false
)
)
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
when (holder) {
is BlogViewHolder -> {
holder.bind(items.get(position))
holder.bind(items2.get(position))
}
}
}
override fun getItemCount(): Int {
return items.size
}
fun submitList(bloglist: List<BlogPost>) {
items = bloglist
items2 = bloglist
}
class BlogViewHolder constructor(itemView: View) : RecyclerView.ViewHolder(itemView) {
val blogImage: ImageButton = itemView.blog_imagemybook
val blogTitle: TextView = itemView.blog_titlemybook
val premiumImage: ImageView = itemView.premiumicon
fun bind(blogPost: BlogPost) {
blogTitle.setText(blogPost.title)
val requestOptions = RequestOptions()
.placeholder(R.drawable.mocksplash)
.error(R.drawable.disconnect)
Glide.with(itemView.blog_imagemybook)
.applyDefaultRequestOptions(requestOptions)
.load(blogPost.image)
.into(blogImage)
blogImage.setOnClickListener {
Toast.makeText(blogImage.context, "<<Swipe left<<", Toast.LENGTH_SHORT).show()
val intent = Intent(blogTitle.context, ComicReadingActivity::class.java)
var KomikName = blogTitle.text.toString()
intent.putExtra("KomikName",Name)
blogImage.context.startActivity(intent)
}
}
}
}
这里是数据源文件，它将存储适配器的数据
类 DataSourceMyBook{
companion object{
fun createDataSet(): ArrayList<BlogPost> {
val dataMyBook1 = ArrayList<BlogPost>()
return dataMyBook1
}
}
}