实施Google Play结算库版本2 [英] Implement Google Play Billing Library version 2
问题描述
Google发布了一个全新的版本来处理Android中的付款，但是搜索了一段时间后，我找不到成功实施该示例的人提供的单个示例或教程.
Google published a brand new version to handle the payments in Android but after searching quite a while I cannot find a single example or tutorial from someone who succeeded implementing it.
文档非常简短，仅提供必要代码的一部分: https://developer.android.com/google/play/billing/billing_library_overview
The documentation is very short and provides only a part of the necessary code: 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
The only sample provided is made with Kotlin: https://github.com/android/play-billing-samples
好像他们忘记了Java开发人员...
Seems like they forgot about Java developers...
有人知道在线教程或成功实现了该教程吗?我当前的代码尚未发布.
Does anyone know a tutorial online or succeeded to implement it? My current code is far from working to be published yet.
推荐答案
感谢@Webfreak，您对Kotlin的回答将我引向了正确的方向.
Thanks @Webfreak, your answer for Kotlin guided to me to the right direction.
这是我为Java实现的方式:
Here is how I implemented it for Java:
首先将'billingclient'库添加到gradle中:
First add the 'billingclient' library to gradle :
implementation 'com.android.billingclient:billing:X.X.X'
并在清单文件中添加所需的权限:
And add the required permissions in the manifest file:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="com.android.vending.BILLING" />
该活动必须实现以下接口:
The Activity must implements the following interfaces:
public class MainActivity extends AppCompatActivity implements
...
PurchasesUpdatedListener,
AcknowledgePurchaseResponseListener {
然后我在onCreate方法中初始化计费客户端:
Then I initialize the billing client inside the onCreate method:
/** IN-APPS PURCHASE */
private BillingClient mBillingClient;
private long mLastPurchaseClickTime = 0;
private List<String> mSkuList = new ArrayList<>();
private List<SkuDetails> mSkuDetailsList = new ArrayList<>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// AppPrefs is just a standalone class I used to get or set shared preferences easily
mPrefs = AppPrefs.getInstance(this);
// Rest of your code ...
/** IN-APP PURCHASES */
// Initialize the list of all the in-app product IDs I use for this app
mSkuList.add(Parameters.UNIT_P1);// NoAdsPurchased
mSkuList.add(Parameters.UNIT_P2);// CustomizationPurchased
mSkuList.add(Parameters.UNIT_P3);// ChartsPurchased
// Initialize the billing client
setupBillingClient();
// Apply the upgrades on my app according to the user's purchases
applyUpgrades();
}
设置计费客户端的方法在这里，以及我用来从应用程序检索可用的应用内商品的方法:
The method setting up the billing client is here, along with the metyhod I use to retrieve the avaialble in-app products fro the app:
private void setupBillingClient() {
mBillingClient = BillingClient
.newBuilder(MainActivity.this)
.enablePendingPurchases() // Useful for physical stores
.setListener(MainActivity.this)
.build();
mBillingClient.startConnection(new BillingClientStateListener() {
@Override
public void onBillingSetupFinished(BillingResult billingResult) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
// Load the available products related to the app from Google Play
getAvailableProducts();
Purchase.PurchasesResult purchasesResult = mBillingClient.queryPurchases(BillingClient.SkuType.INAPP);// Or SkuType.SUBS if subscriptions
// Init all the purchases to false in the shared preferences (security prevention)
mPrefs.setNoAdsPurchased(false);
mPrefs.setCustomizationPurchased(false);
mPrefs.setChartsPurchased(false);
// Retrieve and loop all the purchases done by the user
// Update all the boolean related to the purchases done in the shared preferences
if (purchasesResult.getPurchasesList() != null) {
for (Purchase purchase : purchasesResult.getPurchasesList()) {
if (purchase.isAcknowledged()) {
Log.e(TAG, purchase.getSku());
switch (purchase.getSku()) {
case Parameters.UNIT_P1:
mPrefs.setNoAdsPurchased(true);
break;
case Parameters.UNIT_P2:
mPrefs.setCustomizationPurchased(true);
break;
case Parameters.UNIT_P3:
mPrefs.setChartsPurchased(true);
break;
}
}
}
}
}
}
@Override
public void onBillingServiceDisconnected() {
// Try to restart the connection on the next request to
// Google Play by calling the startConnection() method.
// TODO Note: It's strongly recommended that you implement your own connection retry policy and override the onBillingServiceDisconnected() method. Make sure you maintain the BillingClient connection when executing any methods.
Log.e(TAG, "onBillingServiceDisconnected");
}
});
}
private void getAvailableProducts() {
if (mBillingClient.isReady()) {
SkuDetailsParams params = SkuDetailsParams
.newBuilder()
.setSkusList(mSkuList)
.setType(BillingClient.SkuType.INAPP)
.build();
mBillingClient.querySkuDetailsAsync(params, new SkuDetailsResponseListener() {
@Override
public void onSkuDetailsResponse(BillingResult billingResult, List<SkuDetails> skuDetailsList) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
mSkuDetailsList = skuDetailsList;
}
}
});
}
}
当用户完成购买时(我允许在我的应用中的多个Fragment上购买)，我在主Activity上调用此函数(使用界面):
When a purchase is done by the user (I allow purchases on several Fragments in my app), I call this function on the main Activity (using an interface):
@Override
public void purchase(String sku) {
// Mis-clicking prevention, using threshold of 3 seconds
if (SystemClock.elapsedRealtime() - mLastPurchaseClickTime < 3000){
Log.d(TAG, "Purchase click cancelled");
return;
}
mLastPurchaseClickTime = SystemClock.elapsedRealtime();
// Retrieve the SKU details
for (SkuDetails skuDetails : mSkuDetailsList) {
// Find the right SKU
if (sku.equals(skuDetails.getSku())) {
BillingFlowParams flowParams = BillingFlowParams.newBuilder()
.setSkuDetails(skuDetails)
.build();
mBillingClient.launchBillingFlow(MainActivity.this, flowParams);
break;
}
}
}
我在这里实现继承的方法:
Here I implement the methods inherited:
@Override
public void onPurchasesUpdated(BillingResult billingResult, @Nullable List<Purchase> purchases) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK && purchases != null) {
for (Purchase purchase : purchases) {
handlePurchase(purchase);
}
} else {
displayError(R.string.inapp_purchase_problem, billingResult.getResponseCode());
}
}
private void handlePurchase(Purchase purchase) {
if (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED) {
// Grant entitlement to the user.
applyPurchase(purchase);
// Acknowledge the purchase if it hasn't already been acknowledged.
if (!purchase.isAcknowledged()) {
AcknowledgePurchaseParams acknowledgePurchaseParams =
AcknowledgePurchaseParams.newBuilder()
.setPurchaseToken(purchase.getPurchaseToken())
.build();
mBillingClient.acknowledgePurchase(acknowledgePurchaseParams, MainActivity.this);
}
}
}
@Override
public void onAcknowledgePurchaseResponse(BillingResult billingResult) {
if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK) {
displayError(R.string.inapp_purchase_success, billingResult.getResponseCode());
}
}
我添加的用于在我的应用中确认购买的方法:
The method I added to acknowledge a purchase on my app:
private void applyPurchase(Purchase purchase) {
switch (purchase.getSku()) {
case Parameters.UNIT_P1:
mPrefs.setNoAdsPurchased(true);
break;
case Parameters.UNIT_P2:
mPrefs.setCustomizationPurchased(true);
break;
case Parameters.UNIT_P3:
mPrefs.setChartsPurchased(true);
break;
}
// I remove the ads right away if purchases
if(mPrefs.getNoAdsPurchased()) {
destroyAds();
}
}
最后一种方法用于在应用程序上应用所有升级/购买(以删除广告为例):
This last method is used to apply all the upgrades/purchases on the app (with an example with the removal of the ads):
private void applyUpgrades() {
// No ads
if (mPrefs.getNoAdsPurchased()) {
destroyAds();
} else {
loadAds();
}
if (mPrefs.getCustomizationPurchased()) {
// Allow customization
// ...
}
if (mPrefs.getChartsPurchased()) {
// Allow charts visualization
// ...
}
}
我认为此解决方案尚不完善，但可以正常工作，如果发现改进，我将修改代码.
I guess this solution is not perfect yet but it is working, I will modify the code if I find improvements.
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