Question

我正在将android-inapp-billing-v3用于我的由kotlin编写的android应用程序。现在可以进行购买了，付款完成后可以转到成功的页面。但是，当同一用户第二次购买时，该应用程序直接进入成功页面，而无需任何付款和购买过程。我想让应用程序每次用户单击“付款”按钮时都要求付款。请帮助解决此问题。

class ProductActivity : AppCompatActivity(), BillingProcessor.IBillingHandler {


    var ProductID = ""
    var ProductName = ""
    var ProductDes = ""
    var ProductImage = 0
    var ProductPrice = ""
    val googleKey = "fdsfdsfsddfdsfsfdfs"
    lateinit private var bp: BillingProcessor

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_product)

        val bundle: Bundle = intent.extras
        ProductID = bundle.getString("ProductID")
        ProductName = bundle.getString("ProductName")
        ProductDes = bundle.getString("ProductDes")
        ProductImage = bundle.getInt("ProductImage")
        ProductPrice = bundle.getString("ProductPrice")


    bp = BillingProcessor(this, googleKey, this)
    bp.consumePurchase(ProductID)

    btn_pay.setOnClickListener {


        bp.purchase(this, ProductID)
        }



    }

    override fun onResume() {
        super.onResume()
        val internetStatus:Boolean = ConnectivityUtils.isConnected(this)
        if (internetStatus==true) {

        }
        else {
            val msg = getString(R.string.need_internet_for_service)
            finish()
        }
    }


    override fun onBillingInitialized() {

    }

    override fun onPurchaseHistoryRestored() {


    }

    override fun onProductPurchased(productId: String, details: TransactionDetails?) {

        val intent = Intent(this, SearchQponActivity::class.java)
        intent.putExtra("ProductID", ProductID)
        startActivity(intent)
    }

    override fun onBillingError(errorCode: Int, error: Throwable?) {

    }



    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (!bp.handleActivityResult(requestCode, resultCode, data))
            super.onActivityResult(requestCode, resultCode, data)
    }

    override fun onDestroy() {
        if (bp!=null)
            bp.release()
        super.onDestroy()
    }
}

Answer 1

好吧，我正在为当前应用程序使用该库，并且使用了警报对话框来确认购买或订阅。

此库有很多错误（请确保打开issues页面）。

我在这个库中遇到了类似的问题，并以警告对话框和一个布尔值isConfirmedPurchasing结束了它。

我认为，这可能是由于以下原因造成的：

您正在onCreate中消费已购买的物品，这似乎不是在每次活动开始时都消费物品的正确方法
看起来像该库在启动时会触发方法onProductPurchased，如果是，则此分数内的代码将运行。

提示：

请勿在onCreate中消费商品，请在onProductPurchased
您不需要检查bp是否为空，您可以将其创建为Late-init，否则使其可以为空
将确认状态保存在activity或shared preferences范围内
将购买的物品存放在某个地方。
确保您没有在fragment中使用此库

我创建了一个测试应用程序，并在beta测试中发布了该程序，然后我重构了您的代码，并用来检查它的工作方式（使用我的键和id ofc）。

我想这就是您想要的：

您产品的数据类别：

data class MyProduct(
    val id: String,
    val mame: String,
    val des: String,
    val image: Int,
    val price: String
)

活动：

class ProductActivity : AppCompatActivity(), BillingProcessor.IBillingHandler {

private val googleKey = "your_google_key"
private val keyProductId = "productID"
private var isConfirmedPurchasing = false

private lateinit var bp: BillingProcessor
private lateinit var myProduct: MyProduct

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_product)

    bp = BillingProcessor(this, googleKey, this)


    intent.extras?.let { bundle -> 
        with (bundle) {
            myProduct = MyProduct(
                    getString("productID"),
                    getString("productName"),
                    getString("productDes"),
                    getInt("productImage"),
                    getString("productPrice")
            )
        }
    }


    btn_pay.setOnClickListener {
        createAlertDialog(this) {
            isConfirmedPurchasing = true
            purchase(myProduct.id)
        }
    }

}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    if (!bp.handleActivityResult(requestCode, resultCode, data)) {
        super.onActivityResult(requestCode, resultCode, data)
    }
}

override fun onDestroy() {
    bp.release()
    super.onDestroy()
}

override fun onProductPurchased(productId: String, details: TransactionDetails?) {
    isConfirmedPurchasing = false
    bp.consumePurchase(myProduct.id)
    finishPurchaseWorkflow(productId)
}

override fun onBillingInitialized() {
    Log.d("Tag", "BillingProcessor was initialized and it's ready to purchase")
    bp.consumePurchase(myProduct.id)
}

override fun onPurchaseHistoryRestored() {
    Log.d("Tag", "requested PRODUCT ID was successfully purchased")
}

override fun onBillingError(errorCode: Int, error: Throwable?) {
    Log.e("Tag", "errorCode: $errorCode, error: $error")
    isConfirmedPurchasing = false
}

private fun purchase(id: String) {
    if (isConfirmedPurchasing) {
        bp.purchase(this, id)
    }
}

private fun finishPurchaseWorkflow(googleProductId: String) {
    val intent = Intent(this, SearchQponActivity::class.java)
    intent.putExtra(keyProductId, googleProductId)
    startActivity(intent)
}

private fun createAlertDialog(
        context: Context,
        title: String? = "Are you sure?",
        message: String? = null,
        buttonPos: String = "Yes",
        buttonNeg: String = "No",
        action: () -> Unit
): AlertDialog {
    return AlertDialog.Builder(context)
            .setTitle(title)
            .setMessage(message)
            .setNegativeButton(buttonNeg) { dialog, _ -> dialog.cancel() }
            .setPositiveButton(buttonPos) { dialog, _ -> action(); dialog.cancel() }
            .show()
    }
}

android-inapp-billing-v3易耗品购买问题

1 个答案: