我想在我的Android应用程序中进行应用内购买.我用这个谷歌样本:http://developer.android.com/training/in-app-billing/preparing-iab-app.html#GetSample
我在我的androID studio项目中实现了这个.在开发者控制台中,我将应用内购买和gmail地址设置为测试帐户.
在我的设备(而不是模拟器)上,我使用此测试帐户登录.我启动我的应用程序并点击“购买高级版”并完成此过程.
现在我想显示一个按钮(文本“恢复”),用户可以恢复他的应用内购买,如果他/她之前购买了高级功能.
我有这个代码:
IabHelper.OnIabPurchaseFinishedListener mpurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() { public voID onIabPurchaseFinished(IabResult result, Purchase purchase) { Log.e("-->", "Purchase finished: " + result); if (mHelper == null) return; if (result.isFailure()) { Log.e("-->","Error purchasing: " + result); return; } if (!verifyDeveloperPayload(purchase)) { Log.e("-->","Error purchasing. Authenticity verification Failed."); return; } SharedPreferences prefs = this.getSharedPreferences("xxx", Context.MODE_PRIVATE); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean("Premium", true); editor.commit(); Log.e("-->", "Premium: " + prefs.getBoolean("Premium", false));}};
如果我再次按下“购买”按钮并且我之前购买了此按钮,我会在log cat中收到此消息:
–>: Purchase finished: IabResult: Unable to buy item (response: 7:Item Already Owned), purchase: null
–>: Error purchasing: IabResult: Unable to buy item (response: 7:Item Already Owned)
我的问题是,如何检查应用内购买之前是否购买过?
解决方法:
mIabHelper.queryInventoryAsync(true, "your_sku", mGotInventoryListener);// Listener that's called when we finish querying the items and subscriptions we own IabHelper.queryInventoryFinishedListener mGotInventoryListener = new IabHelper.queryInventoryFinishedListener() { public voID onqueryInventoryFinished(IabResult result, Inventory inventory) { Log.d("PAY", "query inventory finished."); // Have we been disposed of in the meantime? If so, quit. if (mIabHelper == null) return; Purchase purchase = inventory.getPurchase("your_sku"); if (purchase != null) { //purchased } }
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