数据连接不存在，AD反而想画一些东西

Question

我的应用程序中有广告。如果有人没有连接到互联网，我想画一个文本而不是广告。一旦广告出现在应用程序中，我该如何发现？有什么方法可以检测到吗？提前感谢

Answer 1

您可以使用AdListener来检测您的AdView是否接收到广告。

AdView adView = new AdView(activity, AdSize.BANNER, "xxxxxxxxxx");
adView.setAdListener(new AdListener() {
    @Override public void onReceiveAd(Ad arg0) {
        // This method is called when ad was received successfully
    }
    @Override public void onFailedToReceiveAd(Ad arg0, ErrorCode arg1) {
        // This method is called when ad cannot be received
    }
    @Override public void onPresentScreen(Ad arg0) {  }
    @Override public void onLeaveApplication(Ad arg0) { }
    @Override public void onDismissScreen(Ad arg0) { }
});