在App Purchase中使用boolean删除广告

Question

我正在尝试实现Android在应用程序购买删除广告的功能。在我的类下面，我把private boolean isAdsDisabled;放在下面，在onCreate下面，我把

if (isAdsDisabled) {
            AdView adView = (AdView) this.findViewById(R.id.adView);
            adView.setVisibility(View.GONE);
        } else {
            AdView adView = (AdView) this.findViewById(R.id.adView);
            AdRequest adRequest = new AdRequest.Builder().build();
            adView.loadAd(adRequest);
        }

这是我的OnIabPurchaseFinishedListener

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)) {
                removeAds();
            }

        }
    };

我的removeAds()

private void removeAds() {
        AdView adView = (AdView) this.findViewById(R.id.adView);
        adView.setVisibility(View.GONE);
        isAdsDisabled = true;
    }

购买成功后，我设法隐藏了广告。然而，问题是在我重启我的应用程序后，广告再次出现。看起来它不能保存布尔isAdsDisabled = true。如何解决这个问题？

Answer 1

使用SharedPreferences解决了这个问题。

SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
        boolean isAdsDisabled = settings.getBoolean("isAdsDisabled", false);

        if (isAdsDisabled) {
            AdView adView = (AdView) this.findViewById(R.id.adView);
            adView.setVisibility(View.GONE);
        } else {
            AdView adView = (AdView) this.findViewById(R.id.adView);
            AdRequest adRequest = new AdRequest.Builder().build();
            adView.loadAd(adRequest);
        }

还有我的removeAds()

private void removeAds() {
        AdView adView = (AdView) this.findViewById(R.id.adView);
        adView.setVisibility(View.GONE);
        SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
        SharedPreferences.Editor editor = settings.edit();
        editor.putBoolean("isAdsDisabled", true);
        editor.commit();
    }