使用 ViewPager 时出现插页式广告问题

问题描述 投票：0回答：3

我想将插页式广告添加到我的 viewPager，但我遇到了插页式广告关闭（或打开时）后容器“消失”（或被破坏）的问题。一旦你滑动，就会自动调用@Override方法“public void destroyItem(ViewGroup container, intposition,Object object)”，并且调用插页式广告，但是，视图不会像没有调用插页式广告时那样再次膨胀.

我的类扩展了 PagerAdapter，我的一般设置如下：

@Override
public boolean isViewFromObject(View view, Object object) {
    // TODO Auto-generated method stub
    return view == ((RelativeLayout) object);
}

@Override
public Object instantiateItem(final ViewGroup container, final int position) {

    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    //instantiate TextViews, Buttons, ect (code not posted)

    ((ViewPager) container)
            .setOnPageChangeListener(new OnPageChangeListener() {
                @Override
                public void onPageSelected(int position) {
                    // the maximum position value is 130
                    // I want to display an interstitial ad every 7th position

                    if (position % 7 == 0) {
                        displayInterstitial();
                    }

                }

                @Override
                public void onPageScrollStateChanged(int state) {
                    // TODO Auto-generated method stub
                }

                @Override
                public void onPageScrolled(int position,
                        float positionOffset, int positionOffsetPixels) {
                    // TODO Auto-generated method stub
                }
            });



    if (interstitialLoad == false && isConnection == false) {
        if (NetworkUtils.isConnected(context) == true
                && NetworkUtils.isNetworkActive(context) == true) {
            isConnection = true;

            // create an ad
            interstitialAd = new InterstitialAd(context);
            interstitialAd.setAdUnitId(AD_UNIT_ID_INT);

            // request interstitial ads
            AdRequest adRequestInterstitial = new AdRequest.Builder()
                    .build();

            // begin loading interstitial
            interstitialAd.loadAd(adRequestInterstitial);
        }
    }

    if (isConnection = true) {
        // Set the AdListener.
        interstitialAd.setAdListener(new AdListener() {
            @Override
            public void onAdClosed() {
                // do nothing
            }

            @Override
            public void onAdLoaded() {
                if (interstitialLoad == false) {
                    interstitialLoad = true;
                }
            }

            @Override
            public void onAdFailedToLoad(int errorCode) {
                String message = String.format("onAdFailedToLoad (%s)",
                        getErrorReason(errorCode));
                Log.e(TAG, message);
            }
        });
    }

    // add fragments to container (ViewPager)
    ((ViewPager) container).addView(itemView);
    return itemView;

}

/** Gets a string error reason from an error code. */
private String getErrorReason(int errorCode) {
    String errorReason = "";
    switch (errorCode) {
    case AdRequest.ERROR_CODE_INTERNAL_ERROR:
        errorReason = "Internal error";
        break;
    case AdRequest.ERROR_CODE_INVALID_REQUEST:
        errorReason = "Invalid request";
        break;
    case AdRequest.ERROR_CODE_NETWORK_ERROR:
        errorReason = "Network Error";
        break;
    case AdRequest.ERROR_CODE_NO_FILL:
        errorReason = "No fill";
        break;
    }
    return errorReason;
}

// invoke displayInterstitial() when ready to display an interstitial
private void displayInterstitial() {
    if (interstitialLoad == true && interstitialAd.isLoaded()) {
        Log.e(TAG, "displayInterstitial()");
        interstitialAd.show();
    }
}

@Override
public void restoreState(Parcelable state, ClassLoader loader) {
    // TODO Auto-generated method stub
    super.restoreState(state, loader);
}

@Override
public Parcelable saveState() {
    // TODO Auto-generated method stub
    return super.saveState();
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    ((ViewPager) container).removeView((RelativeLayout) object);

}

这是事情发生的顺序（假设我们处于位置 6（第 6 页））：

1）当我滑动到第7页时，首先会自动调用@Override destroyItem(ViewGroup container, int position, Object object)方法。

2）然后自动调用@Override onPageSelected(intposition)方法，并显式调用displayInterstitial()方法。

3) 在displayInterstitial()方法内部，显示插页式广告。此时会自动调用@Override方法saveState()。

4）作为“最终用户”，我然后单击“X”或按设备后退按钮关闭显示的广告。

5）整个视图（或/和容器）消失了。我希望的预期行为是调用@Override 方法restoreState()，然后我仍然可以看到我的容器及其视图。

如何才能使所有内容都从调用并关闭插页式广告之前停止的位置恢复？任何人对如何解决这个问题有任何想法吗？预先感谢！

android android-viewpager admob
3个回答
1
投票

可能与您的问题无关，但是

if (isConnection = true) {

应该是：

if (isConnection == true) {
0
投票

感谢您的回复，丹和我找到了解决方案。我的问题是，在第一个广告显示并销毁后，我需要重新加载新广告。所以我基本上在 AdListener 内部进行了重新实例化，我的冲突得到了解决。每滑动 7 次即可无限显示广告单元。干杯！

if (isConnection == true) {
            // Set the AdListener.
            interstitialAd.setAdListener(new AdListener() {
                @Override
                public void onAdClosed() {
                    // do nothing
                    Log.i(TAG, "onAdClosed()");     
                    LayoutInflater inflater = (LayoutInflater) context
                            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

                    int layoutColorId = ElementStructure.arrayLayoutColor.get(position);

                    if (layoutColorId == 1) {
                        itemView = inflater.inflate(R.layout.frame_learn_a, container,
                                false);
                    } else if (layoutColorId == 2) {
                        itemView = inflater.inflate(R.layout.frame_learn_b, container,
                                false);
                    } else if (layoutColorId == 3) {
                        itemView = inflater.inflate(R.layout.frame_learn_c, container,
                                false);
                    } else if (layoutColorId == 4) {
                        itemView = inflater.inflate(R.layout.frame_learn_d, container,
                                false);
                    }

                    // reload interstitial ad
                    if (NetworkUtils.isConnected(context) == true
                            && NetworkUtils.isNetworkActive(context) == true) {
                        Log.i(TAG, "Internet connection detected :: reload interstitial");
                        if (isConnection == false) {
                            isConnection = !isConnection;
                        }

                        // create an ad
                        interstitialAd = new InterstitialAd(context);
                        interstitialAd.setAdUnitId(AD_UNIT_ID_INT);

                        // request interstitial ads
                        AdRequest adRequestInterstitial = new AdRequest.Builder()
                                .build();

                        // begin loading interstitial
                        interstitialAd.loadAd(adRequestInterstitial);
                    }
                }

                @Override
                public void onAdLoaded() {
                    if (interstitialLoad == false) {
                        Log.e(TAG, "onAdLoaded (interstitial)");
                        interstitialLoad = !interstitialLoad;
                    }
                }

                @Override
                public void onAdFailedToLoad(int errorCode) {
                    String message = String.format("onAdFailedToLoad (%s)",
                            getErrorReason(errorCode));
                    Log.e(TAG, message);
                }
            });
        }
0
投票

嘿，看来你的应用程序是通过滑动操作的， 您是通过滑动关闭插页式广告还是必须单击 x 因为我认为在您的情况下滑动关闭广告更理想

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