点击后停止加载 admob 广告

Question

我想在用户点击 adview 后停止加载广告我已经实现了 adlistener 并且我把 adView.stopLoading();在 onDismissScreen 上，但是当我关闭广告网页时出现以下错误：

E/AndroidRuntime(1059): java.lang.RuntimeException: Unable to pause activity {ivn.com.teletextinternational/com.google.ads.AdActivity}: java.lang.NullPointerException

代码：

public class MyActivity extends Activity implements OnClickListener, AdListener {
RelativeLayout relativeLayout1;
 ImageView imgpag; 
 FrameLayout frameLayout1;
 FrameLayout frameLayout2;
 Button right;
 Button left;
 ProgressBar probar;
 LinearLayout linear;
 AdView adView;
 EditText numbox;

 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    imgpag = (ImageView)findViewById (R.id.imgpag); 
    relativeLayout1 = (RelativeLayout) findViewById(R.id.RelativeLayout1);
    frameLayout1 = (FrameLayout) findViewById(R.id.frameLayout1);
    frameLayout2 = (FrameLayout) findViewById(R.id.frameLayout2);
    left = (Button) findViewById(R.id.left);
    right = (Button) findViewById(R.id.right);
    probar = (ProgressBar) findViewById (R.id.probar);
    adView = new AdView(this, AdSize.BANNER, "a14ebbcd3aae1ff");

    LinearLayout linear = (LinearLayout) findViewById (R.id.linear);
    linear.addView(adView);
    adView.loadAd(new AdRequest());
    adView.setAdListener(this);
 }

public void onDismissScreen(Ad arg0) {
    adView.stopLoading();
            linear.setVisibility(View.GONE);//if you want hide ads
}
}

Answer 1

试试这个吧：

    adView = new AdView(this, AdSize.BANNER, "a14ebbcd3aae1ff");

您创建了一个本地 adView 对象，而不是初始化您的 adView 字段。结果，当您尝试调用 stopLoading() 时，adView 为空。