Question

我想在我的viewPager中添加插页式广告，但我遇到了容器问题＆＃34;正在消失＆＃34;插页式广告关闭后（或打开时）广告（或被销毁）。 @Override方法＆＃34; public void destroyItem（ViewGroup容器，int位置，Object对象）＆＃34;在您滑动后会自动调用，并且会调用插页式广告，但是，视频不会像未调用插页式广告时那样再次充气。

我的课程扩展了PagerAdapter，我的常规设置如下：

@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（假设我们在第6位（第6页））：

1）当我滑到第7页时，首先自动调用@Override destroyItem（ViewGroup容器，int位置，Object对象）方法。

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

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

4）作为最终用户＆＃39;，然后我点击＆＃34; X＆＃34;或按设备返回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@Override方法restoreState（）将被调用，然后我仍然可以看到我的容器及其视图。

如何在调用和关闭插页式广告之前将所有内容从中断位置恢复？有任何想法如何解决这个问题的人？提前谢谢！

Answer 1

可能与您的问题无关，但

    if (isConnection = true) {

应该是：

    if (isConnection == true) {

Answer 2

感谢您的回复Dan和我找到了解决方案。我的问题是我需要在显示和销毁第一个广告后重新加载新广告。所以我基本上在AdListener中进行了重新实例化，我的冲突得到了解决。每7次滑动无限显示广告单元。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);
                }
            });
        }

使用ViewPager的非页内广告的问题

2 个答案: