消费类应用程序内购买
耗材管理产品是可以多次购买的产品，例如游戏内货币，游戏生活，加电等。
在这个例子中，我们将实现 4 种不同的耗材管理产品 "item1", "item2", "item3", "item4"。
总结步骤：
- 将应用内结算库添加到项目（AIDL 文件）。
- 在
AndroidManifest.xml文件中添加所需的权限。- 将已签名的 apk 部署到 Google Developers Console。
- 定义你的产品。
- 实现代码。
- 测试应用内结算（可选）。
步骤 1：
首先，我们需要将 AIDL 文件添加到你的项目在谷歌文档解释清楚这里 。
IInAppBillingService.aidl 是一个 Android 界面定义语言（AIDL）文件，用于定义应用内结算版本 3 服务的界面。你将使用此接口通过调用 IPC 方法调用来进行计费请求。
第 2 步：
添加 AIDL 文件后，在 AndroidManifest.xml 中添加 BILLING 权限：
<!-- Required permission for implementing In-app Billing -->
<uses-permission android:name="com.android.vending.BILLING" />
第 3 步：
生成已签名的 apk，并将其上传到 Google Developers Console。这是必需的，以便我们可以开始在那里定义我们的应用内产品。
第 4 步：
使用不同的 productID 定义所有产品，并为每个产品设置价格。有两种类型的产品（管理产品和订阅）。正如我们已经说过的，我们将实施 4 种不同的耗材管理产品 "item1", "item2", "item3", "item4"。
第 5 步：
完成上述所有步骤后，你现在可以开始在自己的活动中实现代码。
主要活动：
public class MainActivity extends Activity {
IInAppBillingService inAppBillingService;
ServiceConnection serviceConnection;
// productID for each item. You should define them in the Google Developers Console.
final String item1 = "item1";
final String item2 = "item2";
final String item3 = "item3";
final String item4 = "item4";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Instantiate the views according to your layout file.
final Button buy1 = (Button) findViewById(R.id.buy1);
final Button buy2 = (Button) findViewById(R.id.buy2);
final Button buy3 = (Button) findViewById(R.id.buy3);
final Button buy4 = (Button) findViewById(R.id.buy4);
// setOnClickListener() for each button.
// buyItem() here is the method that we will implement to launch the PurchaseFlow.
buy1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
buyItem(item1);
}
});
buy2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
buyItem(item2);
}
});
buy3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
buyItem(item3);
}
});
buy4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
buyItem(item4);
}
});
// Attach the service connection.
serviceConnection = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
inAppBillingService = null;
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
inAppBillingService = IInAppBillingService.Stub.asInterface(service);
}
};
// Bind the service.
Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
serviceIntent.setPackage("com.android.vending");
bindService(serviceIntent, serviceConnection, BIND_AUTO_CREATE);
// Get the price of each product, and set the price as text to
// each button so that the user knows the price of each item.
if (inAppBillingService != null) {
// Attention: You need to create a new thread here because
// getSkuDetails() triggers a network request, which can
// cause lag to your app if it was called from the main thread.
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
ArrayList<String> skuList = new ArrayList<>();
skuList.add(item1);
skuList.add(item2);
skuList.add(item3);
skuList.add(item4);
Bundle querySkus = new Bundle();
querySkus.putStringArrayList("ITEM_ID_LIST", skuList);
try {
Bundle skuDetails = inAppBillingService.getSkuDetails(3, getPackageName(), "inapp", querySkus);
int response = skuDetails.getInt("RESPONSE_CODE");
if (response == 0) {
ArrayList<String> responseList = skuDetails.getStringArrayList("DETAILS_LIST");
for (String thisResponse : responseList) {
JSONObject object = new JSONObject(thisResponse);
String sku = object.getString("productId");
String price = object.getString("price");
switch (sku) {
case item1:
buy1.setText(price);
break;
case item2:
buy2.setText(price);
break;
case item3:
buy3.setText(price);
break;
case item4:
buy4.setText(price);
break;
}
}
}
} catch (RemoteException | JSONException e) {
e.printStackTrace();
}
}
});
thread.start();
}
}
// Launch the PurchaseFlow passing the productID of the item the user wants to buy as a parameter.
private void buyItem(String productID) {
if (inAppBillingService != null) {
try {
Bundle buyIntentBundle = inAppBillingService.getBuyIntent(3, getPackageName(), productID, "inapp", "bGoa+V7g/yqDXvKRqq+JTFn4uQZbPiQJo4pf9RzJ");
PendingIntent pendingIntent = buyIntentBundle.getParcelable("BUY_INTENT");
startIntentSenderForResult(pendingIntent.getIntentSender(), 1003, new Intent(), 0, 0, 0);
} catch (RemoteException | IntentSender.SendIntentException e) {
e.printStackTrace();
}
}
}
// Unbind the service in onDestroy(). If you don’t unbind, the open
// service connection could cause your device’s performance to degrade.
@Override
public void onDestroy() {
super.onDestroy();
if (inAppBillingService != null) {
unbindService(serviceConnection);
}
}
// Check here if the in-app purchase was successful or not. If it was successful,
// then consume the product, and let the app make the required changes.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1003 && resultCode == RESULT_OK) {
final String purchaseData = data.getStringExtra("INAPP_PURCHASE_DATA");
// Attention: You need to create a new thread here because
// consumePurchase() triggers a network request, which can
// cause lag to your app if it was called from the main thread.
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
JSONObject jo = new JSONObject(purchaseData);
// Get the productID of the purchased item.
String sku = jo.getString("productId");
String productName = null;
// increaseCoins() here is a method used as an example in a game to
// increase the in-game currency if the purchase was successful.
// You should implement your own code here, and let the app apply
// the required changes after the purchase was successful.
switch (sku) {
case item1:
productName = "Item 1";
increaseCoins(2000);
break;
case item2:
productName = "Item 2";
increaseCoins(8000);
break;
case item3:
productName = "Item 3";
increaseCoins(18000);
break;
case item4:
productName = "Item 4";
increaseCoins(30000);
break;
}
// Consume the purchase so that the user is able to purchase the same product again.
inAppBillingService.consumePurchase(3, getPackageName(), jo.getString("purchaseToken"));
Toast.makeText(MainActivity.this, productName + " is successfully purchased. Excellent choice, master!", Toast.LENGTH_LONG).show();
} catch (JSONException | RemoteException e) {
Toast.makeText(MainActivity.this, "Failed to parse purchase data.", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
});
thread.start();
}
}
}
第 6 步：
实现代码后，你可以通过将 apk 部署到 beta / alpha 通道来测试它，并让其他用户为你测试代码。但是，在测试模式下无法进行真正的应用内购买。你必须首先将你的应用/游戏发布到 Play 商店，以便完全激活所有产品。
有关测试应用内结算的更多信息，请点击此处 。