inappbilling

inappbilling is a Google Play Billing library that demonstrates InApp purchase in your Android application

Getting Started

Step 1

Add maven repository in project level build.gradle or in latest project setting.gradle file

repositories {
    google()
    mavenCentral()
    maven { url "https://jitpack.io" }
}

Pre-Release IMPLEMENTATION

Step 2

Add inappbilling dependencies in App level build.gradle. Latest Version

dependencies {
    implementation 'com.github.hypersoftdev:inappbilling:x.x.x'
}

Step 3

Declare BillingManger Variable, "this" can be an application context.

also declare your original productId e.g. packageName

private val billingManager by lazy { BillingManager(this) }
private val productId:String = "Paste your original Product ID"

Enable Subscription Check for Old Purchases

billingManager.setCheckForSubscription(true)

Billing Initializaiton

Get debugging ids for testing using "getDebugProductIDList()" method

val productId = when (BuildConfig.DEBUG) {
    true -> diComponent.billingManager.getDebugProductIDList()
    false -> listOf(globalContext.packageName)
}

diComponent.billingManager.startConnection(productId, object : OnConnectionListener {
    override fun onConnectionResult(isSuccess: Boolean, message: String) {
        Log.d("TAG", "onConnectionResult: $isSuccess - $message")
        binding.mbMakePurchase.isEnabled = isSuccess
    }

    override fun onOldPurchaseResult(isPurchased: Boolean, purchaseDetail: PurchaseDetail?) {
        // Update your shared-preferences here!
        Log.d("TAG", "onOldPurchaseResult: $isPurchased")
    }
})

Access the full details of the item you have currently purchased by utilizing the purchaseDetail method.

data class PurchaseDetail (
    val productType: ProductType,    // e.g. SUBS/INAPP
    val purchaseType: String,        // e.g. Weekly, Monthly, Yearly, etc
    val purchaseTime: String         // e.g. 2023-01-01 12:00
)

Billing State Observer

Observe the states by using BillingManager TAG

Purchasing InApp

billingManager.makeInAppPurchase(activity, object : OnPurchaseListener {
    override fun onPurchaseResult(isPurchaseSuccess: Boolean, message: String) {
        Toast.makeText(this@MainActivity, message, Toast.LENGTH_SHORT).show()
        Log.d("TAG", "makeInAppPurchase: $isPurchaseSuccess - $message")
    }
})

Purchasing Subscription & Observe

billingManager.makeSubPurchase(activity, SubscriptionPlans.basicPlanMonthly, object : OnPurchaseListener {
    override fun onPurchaseResult(isPurchaseSuccess: Boolean, message: String) {
        Toast.makeText(this@MainActivity, message, Toast.LENGTH_SHORT).show()
        binding.mbMakePurchase.isEnabled = !isPurchaseSuccess
    }
})

SubscriptionTags

Add plans and tags on Play Console There are few subsciption tags as follow, to generate plans.

For Weekly Subscription

-> Product ID:          basic_product_weekly
-> Plan ID:             basic-plan-weekly

For Montly Subscription

-> Product ID:          basic_product_monthly
-> Plan ID:             basic-plan-monthly

For Yearly Subscription

-> Product ID:          basic_product_yearly
-> Plan ID:             basic-plan-yearly

For 06 Months Subscription

-> Product ID:          basic_product_semi_yearly
-> Plan ID:             basic-plan-semi-yearly

Observe Dynamic Pricing

The model class for ProductDetail

data class ProductDetail(
    var productId: String,
    var price: String,
    var currencyCode: String,
    var freeTrialPeriod: Int,
    var priceAmountMicros: Long = 0,
    var freeTrial: Boolean = false,
    var productType: ProductType = ProductType.SUBS
)

Following observer observes all the active subscription and in-App Product

billingManager.productDetailsLiveData.observe(this) { list ->
    var month = 0L
    var year = 0L
    list.forEach { productDetail: ProductDetail ->
        Log.d(TAG, "initObservers: $productDetail")
        when (productDetail.productId) {
            SubscriptionProductIds.basicProductMonthly -> {
                //binding.mtvOfferPrice1.text = productDetail.price
                month = productDetail.priceAmountMicros / 1000000
            }

            SubscriptionProductIds.basicProductYearly -> {
                //binding.mtvOfferPrice2.text = productDetail.price
                year = productDetail.priceAmountMicros / 1000000
            }

            SubscriptionProductIds.basicProductSemiYearly -> {
                //binding.mtvOfferPrice3Premium.text = productDetail.price
            }

            productId -> {
                //binding.mtvOfferPrice3Premium.text = productDetail.price
            }
        }
    }
    // Best Offer
    if (month == 0L || year == 0L) return@observe
    val result = 100 - (year * 100 / (12 * month))
    val text = "Save $result%"
    //binding.mtvBestOffer.text = text

    val perMonth = (year / 12L).toString()
    //binding.mtvOffer.text = perMonth
}

LICENSE

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

devaeon/In-app_purchase