我创建了一个Android应用，它有两个活动，一个是免费广告，另一个是广告。我想在应用内购买广告来删除广告，因此当用户购买应用时，它会向他显示无广告活动，如果没有，则会显示他的广告活动。有人可以告诉我该怎么做。这是我的代码。
import cf.droiddev.androidtutorials.util.IabHelper;
import cf.droiddev.androidtutorials.util.IabResult;
import cf.droiddev.androidtutorials.util.Inventory;
import cf.droiddev.androidtutorials.util.Purchase;
public class RemoveAdsActivity extends Activity {
static final String TAG = "Android Tutorials";
static final String SKU_INAPPITEM = "android.test.purchased"; //"change to your in app item"; // "android.test.cancelled";
String base64EncodedPublicKey = "REPLACE WITH YOUR PUBLIC KEY";
// The helper object
IabHelper mHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.remove_ads_activity);
mHelper = new IabHelper(this, base64EncodedPublicKey);
// enable debug logging (for a production application, you should set
// this to false).
mHelper.enableDebugLogging(true);
// Start setup. This is asynchronous and the specified listener
// will be called once setup completes.
Log.d(TAG, "Starting setup.");
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
@Override
public void onIabSetupFinished(IabResult result) {
Log.d(TAG, "Setup finished.");
if (!result.isSuccess()) {
// Oh noes, there was a problem.
complain("Problem setting up in-app billing: " + result);
return;
}
// Hooray, IAB is fully set up. Now, let's get an inventory of
// stuff we own.
Log.d(TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(mGotInventoryListener);
}
});
}
// Listener that's called when we finish querying the items and
// subscriptions we own
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
@Override
public void onQueryInventoryFinished(IabResult result,
Inventory inventory) {
Log.d(TAG, "Query inventory finished.");
if (result.isFailure()) {
complain("Failed to query inventory: " + result);
return;
}
Log.d(TAG, "Query inventory was successful.");
/*
* Check for items we own. Notice that for each purchase, we check
* the developer payload to see if it's correct! See
* verifyDeveloperPayload().
*/
// Check for gas delivery -- if we own gas, we should fill up the
// tank immediately
Purchase removeAdsPurchase = inventory.getPurchase(SKU_INAPPITEM);
if (removeAdsPurchase != null
&& verifyDeveloperPayload(removeAdsPurchase)) {
Log.d(TAG, "User has already purchased this item for removing ads. Write the Logic for removign Ads.");
mHelper.consumeAsync(inventory.getPurchase(SKU_INAPPITEM),
mConsumeFinishedListener);
return;
}
Log.d(TAG, "Initial inventory query finished; enabling main UI.");
}
};
// User clicked the "Buy Gas" button
public void onBuyGasButtonClicked(View arg0) {
Log.d(TAG, "Buy gas button clicked.");
/*
* TODO: for security, generate your payload here for verification. See
* the comments on verifyDeveloperPayload() for more info. Since this is
* a SAMPLE, we just use an empty string, but on a production app you
* should carefully generate this.
*/
String payload = "";
mHelper.launchPurchaseFlow(this, SKU_INAPPITEM, 10000,
mPurchaseFinishedListener, payload);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.d(TAG, "onActivityResult(" + requestCode + "," + resultCode + ","
+ data);
// Pass on the activity result to the helper for handling
if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {
// not handled, so handle it ourselves (here's where you'd
// perform any handling of activity results not related to in-app
// billing...
super.onActivityResult(requestCode, resultCode, data);
} else {
Log.d(TAG, "onActivityResult handled by IABUtil.");
}
}
// Callback for when a purchase is finished
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
@Override
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
Log.d(TAG, "Purchase finished: " + result + ", purchase: "
+ purchase);
if (result.isFailure()) {
complain("Error purchasing: " + result);
return;
}
if (!verifyDeveloperPayload(purchase)) {
complain("Error purchasing. Authenticity verification failed.");
return;
}
Log.d(TAG, "Purchase successful.");
if (purchase.getSku().equals(SKU_INAPPITEM)) {
// bought 1/4 tank of gas. So consume it.
Log.d(TAG,
"removeAdsPurchase was succesful.. starting consumption.");
mHelper.consumeAsync(purchase, mConsumeFinishedListener);
}
}
};
// Called when consumption is complete
IabHelper.OnConsumeFinishedListener mConsumeFinishedListener = new IabHelper.OnConsumeFinishedListener() {
@Override
public void onConsumeFinished(Purchase purchase, IabResult result) {
Log.d(TAG, "Consumption finished. Purchase: " + purchase
+ ", result: " + result);
// We know this is the "gas" sku because it's the only one we
// consume,
// so we don't check which sku was consumed. If you have more than
// one
// sku, you probably should check...
if (result.isSuccess()) {
// successfully consumed, so we apply the effects of the item in
// our
// game world's logic, which in our case means filling the gas
// tank a bit
Log.d(TAG, "Consumption successful. Provisioning.");
alert("You have purchased for removing ads from your app.");
} else {
complain("Error while consuming: " + result);
}
Log.d(TAG, "End consumption flow.");
}
};
/** Verifies the developer payload of a purchase. */
boolean verifyDeveloperPayload(Purchase p) {
String payload = p.getDeveloperPayload();
/*
* TODO: verify that the developer payload of the purchase is correct.
* It will be the same one that you sent when initiating the purchase.
*
* WARNING: Locally generating a random string when starting a purchase
* and verifying it here might seem like a good approach, but this will
* fail in the case where the user purchases an item on one device and
* then uses your app on a different device, because on the other device
* you will not have access to the random string you originally
* generated.
*
* So a good developer payload has these characteristics:
*
* 1. If two different users purchase an item, the payload is different
* between them, so that one user's purchase can't be replayed to
* another user.
*
* 2. The payload must be such that you can verify it even when the app
* wasn't the one who initiated the purchase flow (so that items
* purchased by the user on one device work on other devices owned by
* the user).
*
* Using your own server to store and verify developer payloads across
* app installations is recommended.
*/
return true;
}
void complain(String message) {
Log.e(TAG, "**** IN APP Purchase Error: " + message);
alert(message);
}
void alert(String message) {
Log.d(TAG, "Showing alert dialog: " + message);
TextView resultTv = (TextView) findViewById(R.id.textView_result);
resultTv.setText("Result : " + message);
}
}
也可以有人告诉我如何创建开发人员有效负载，我们将非常感谢任何帮助。
答案 0 :(得分：0)
我能在这里回答主要问题^^ 如果尚未完成，则已将包含广告的活动设置为启动活动。在该Activity中的onCreate（）方法中，您将在onCreate（）的末尾添加以下内容：
if([Purchased?]
{
Intent adfreeactivity = new Intent(NameOfCurrentActivity.this, NameOfTargetActivity.class);
startActivity(adfreeactivity);
}
之后，您的应用应该在开始时启动正确的活动。 此外，如果用户一旦离线，最好将结果保存在SharedPreferences中，并且仅在用户在线时再次检查，并且仅在上次检查返回成功购买时才切换活动。
希望我能帮到你， MaxMüller