我正在使用一些在线教程在我的应用程序中实现应用程序内购买。但该教程适用于消费品应用内购买。但就我而言，用户只需要购买一次。
我修改了代码，在购买应用内购买后禁用“购买按钮”。现在一切正常。但问题是，如果我关闭并打开应用程序，“购买按钮”就会启用。
这是我的 xml 代码
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".InAppBillingActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/click_string"
android:id="@+id/clickButton"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="113dp"
android:onClick="buttonClicked"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/buy_string"
android:id="@+id/buyButton"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:onClick="buyClick" />
</RelativeLayout>
这是我的应用内结算活动
public class InAppBillingActivity extends AppCompatActivity {
private static final String TAG =
"InAppBilling";
IabHelper mHelper;
static final String ITEM_SKU = "com.example.buttonclick";
private Button clickButton;
private Button buyButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_in_app_billing);
buyButton = (Button)findViewById(R.id.buyButton);
clickButton = (Button)findViewById(R.id.clickButton);
clickButton.setEnabled(false);
String base64EncodedPublicKey =
"<place your public key here>";
mHelper = new IabHelper(this, base64EncodedPublicKey);
mHelper.startSetup(new
IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
if (!result.isSuccess()) {
Log.d(TAG, "In-app Billing setup failed: " +
result);
} else {
Log.d(TAG, "In-app Billing is set up OK");
}
}
});
}
public void buttonClicked (View view)
{
Intent Quiz = new Intent(getApplicationContext(), QuestionYearwises.class);
startActivity(Quiz);
}
public void buyClick(View view) {
mHelper.launchPurchaseFlow(this, ITEM_SKU, 10001,
mPurchaseFinishedListener, "mypurchasetoken");
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data)
{
if (!mHelper.handleActivityResult(requestCode,
resultCode, data)) {
super.onActivityResult(requestCode, resultCode, data);
}
}
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener
= new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result,
Purchase purchase)
{
if (result.isFailure()) {
// Handle error
return;
}
else if (purchase.getSku().equals(ITEM_SKU)) {
consumeItem();
buyButton.setEnabled(false);
}
}
};
public void consumeItem() {
mHelper.queryInventoryAsync(mReceivedInventoryListener);
}
IabHelper.QueryInventoryFinishedListener mReceivedInventoryListener
= new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result,
Inventory inventory) {
if (result.isFailure()) {
// Handle failure
} else {
mHelper.consumeAsync(inventory.getPurchase(ITEM_SKU),
mConsumeFinishedListener);
}
}
};
IabHelper.OnConsumeFinishedListener mConsumeFinishedListener =
new IabHelper.OnConsumeFinishedListener() {
public void onConsumeFinished(Purchase purchase,
IabResult result) {
if (result.isSuccess()) {
clickButton.setEnabled(true);
} else {
// handle error
}
}
};
@Override
public void onDestroy() {
super.onDestroy();
if (mHelper != null) mHelper.dispose();
mHelper = null;
}
}
