实施Google Play计费库版本2

Question

Google发布了一个全新的版本来处理Android中的付款，但是搜索了很长时间后，我找不到成功实现该功能的人的单个示例或教程。

该文档非常简短，仅提供了必要代码的一部分：https://developer.android.com/google/play/billing/billing_library_overview

提供的唯一样品是用Kotlin制成的：https://github.com/android/play-billing-samples

似乎他们忘记了Java开发人员...

有人知道在线教程或成功实施了该教程吗？我当前的代码尚无法发布。

Answer 1

class GoPremiumActivity : AppCompatActivity(), PurchasesUpdatedListener, AcknowledgePurchaseResponseListener {

    private lateinit var billingClient: BillingClient
    private val skuList = listOf(CStr.PRODUCT_ADS_REMOVE.value)
    private var skuDetails: SkuDetails? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.go_premium)
        supportActionBar?.setDisplayHomeAsUpEnabled(true)
        setupBillingClient()

        purchaseButton.setOnClickListener {
            val flowParams = BillingFlowParams.newBuilder()
                    .setSkuDetails(skuDetails)
                    .build()
            billingClient.launchBillingFlow(this@GoPremiumActivity, flowParams)
        }
    }


    private fun setupBillingClient() {
        billingClient = BillingClient
                .newBuilder(this@GoPremiumActivity)
                .enablePendingPurchases()
                .setListener(this@GoPremiumActivity)
                .build()

        billingClient.startConnection(object : BillingClientStateListener {
            override fun onBillingSetupFinished(billingResult: BillingResult?) {
                if (billingResult?.responseCode == BillingClient.BillingResponseCode.OK) {
                    getAvailableProducts()

                    val purchasesResult = billingClient.queryPurchases(BillingClient.SkuType.INAPP)
                    val purchase = purchasesResult.purchasesList.firstOrNull { it.sku == CStr.PRODUCT_ADS_REMOVE.value}
                    if (purchase?.isAcknowledged == true) {
                        Global.prefs.adsRemovalPurchased = true
                        finish()
                    }
                } else {
                    showGeneralError()
                }
            }

            override fun onBillingServiceDisconnected() {
                /*DO NOTHING*/
            }
        })
    }

    fun getAvailableProducts() {
        if (billingClient.isReady) {
            val params = SkuDetailsParams
                    .newBuilder()
                    .setSkusList(skuList)
                    .setType(BillingClient.SkuType.INAPP)
                    .build()
            billingClient.querySkuDetailsAsync(params) { responseCode, skuDetailsList ->
                if (responseCode.responseCode == BillingClient.BillingResponseCode.OK) {
                    skuDetails = skuDetailsList.firstOrNull()
                    skuDetails?.let {
                        purchaseButton.text = String.format("BUY %s", it.price)
                        showSuccessOrError(success = true)
                    } ?: run {
                        showSuccessOrError(success = false)
                    }
                } else {
                    showGeneralError()
                }
            }
        } else {
            showGeneralError()
        }
    }

    override fun onPurchasesUpdated(billingResult: BillingResult?, purchases: MutableList<Purchase>?) {
        if (billingResult?.responseCode == BillingClient.BillingResponseCode.OK && purchases != null) {
            val purchase = purchases.firstOrNull { it.sku == CStr.PRODUCT_ADS_REMOVE.value}
            if (purchase?.purchaseState == Purchase.PurchaseState.PURCHASED) {
                if (!purchase.isAcknowledged) {
                    val acknowledgePurchaseParams = AcknowledgePurchaseParams.newBuilder()
                            .setPurchaseToken(purchase.purchaseToken)
                            .build()
                    billingClient.acknowledgePurchase(acknowledgePurchaseParams, this@GoPremiumActivity)
                }
            }
        } else if (billingResult?.responseCode == BillingClient.BillingResponseCode.ITEM_ALREADY_OWNED) {
            Global.prefs.adsRemovalPurchased = true
            finish()
        } else {
            Global.prefs.adsRemovalPurchased = false
            showSuccessOrError(success = true)
        }
    }

    override fun onAcknowledgePurchaseResponse(billingResult: BillingResult?) {
        if (billingResult?.responseCode == BillingClient.BillingResponseCode.OK) {
            showThankYouDialog(this@GoPremiumActivity)
            Global.prefs.adsRemovalPurchased = true
        }
    }

    private fun showSuccessOrError(success: Boolean) {
        purchaseProgressBar.visibility = View.GONE
        if (success) {
            purchaseButton.visibility = View.VISIBLE
        } else {
            purchaseUnavailable.visibility = View.VISIBLE
        }
    }

    private fun showGeneralError() {
        purchaseProgressBar.visibility = View.GONE
        purchaseUnavailable.visibility = View.VISIBLE
    }

    companion object {
        fun newIntent(context: Context): Intent {
            return Intent(context, GoPremiumActivity::class.java)
        }
    }

    override fun onSupportNavigateUp(): Boolean {
        finish()
        return true
    }

    public override fun onDestroy() {
        super.onDestroy()
    }

    override fun onPause() {
        super.onPause()
        if (isFinishing) {
            finish()
        }
    }

    private fun showThankYouDialog(context: Context) {
        //Show dialog
    }
}

如果您特别想要用Java的话，我可以将其删除。