java.lang.IllegalStateException: 必须在调用 loadAd 之前设置广告尺寸和广告单元 ID。？

Question

我正在开发新闻应用程序，我已经使用数据绑定实现了 adview，但它给出了以下异常

java.lang.IllegalStateException: The ad size and ad unit ID must be set before loadAd is called.
     at com.google.android.gms.internal.ads.zzxv.zza(com.google.android.gms:play-services-ads-lite@@19.1.0:82)
     at com.google.android.gms.ads.BaseAdView.loadAd(com.google.android.gms:play-services-ads-lite@@19.1.0:15)
     at com.google.android.gms.ads.AdView.loadAd(com.google.android.gms:play-services-ads-lite@@19.1.0:20)
     at yodgorbek.komilov.musobaqayangiliklari.ui.TopHeadlinesFragment.initializeAds(TopHeadlinesFragment.kt:95)
     at yodgorbek.komilov.musobaqayangiliklari.ui.TopHeadlinesFragment.onViewCreated(TopHeadlinesFragment.kt:56)
     at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:322)
     at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1185)
     at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1354)
     at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1432)
     at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1495)
     at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:447)
     at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:2167)
     at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1990)
     at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1945)
     at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1847)
     at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2621)
     at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2569)
     at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:247)
     at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:541)
     at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:201)
     at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1392)
     at android.app.Activity.performStart(Activity.java:7252)
     at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3000)
     at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:185)
     at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:170)
     at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:147)
     at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:73)
     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1858)
     at android.os.Handler.dispatchMessage(Handler.java:106)
     at android.os.Looper.loop(Looper.java:201)
     at android.app.ActivityThread.main(ActivityThread.java:6820)
     at java.lang.reflect.Method.invoke(Native Method)
     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:922)

但我已经尝试了以下答案 Ad Size and Ad unit id must be set before loadAd is called 和这个 The ad size and ad unit ID must be set before loadAd when set programmatically 和这个以及来自 StackOverflow 的 Include AdView with databinding 和 https://github.com/firebase/quickstart-android/blob/master/admob/app/src/main/java/com/google/samples/quickstart/admobexample/kotlin/MainActivity.kt 它并没有解决我的问题

在我实施广告视图的 XML 文件下方

<data>

    <variable
        name="adId"
        type="String" />
</data>

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">



    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="56dp"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/pb"
        android:gravity="center"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        ads:adSize="BANNER"
        ads:adUnitId="@{adId}"
        ads:layout_constraintTop_toBottomOf="@+id/pb"
        ads:layout_constraintBottom_toBottomOf="@+id/pb"/>


</androidx.constraintlayout.widget.ConstraintLayout>

在我的 Fragment 类下面

class TopHeadlinesFragment : Fragment() {

    private lateinit var binding: FragmentTopHeadlinesBinding


    private val viewModel by viewModel<MainViewModel>()


    private lateinit var topHeadlinesAdapter: TopHeadlinesAdapter



    //3
    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        binding =
            DataBindingUtil.inflate(inflater, R.layout.fragment_top_headlines, container, false)
        binding.lifecycleOwner = this
        topHeadlinesAdapter = TopHeadlinesAdapter()
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        initViewModel()
        initializeAds()





    }

    private fun initViewModel() {
        viewModel.sportList.observe(this, Observer { result ->

            when (result) {
                is Results.Success -> {
                    val newList = result.data
                    if (newList != null) {
                        topHeadlinesAdapter.updateData(newList)
                    }
                    binding.recyclerView.adapter = topHeadlinesAdapter
                    topHeadlinesAdapter.notifyDataSetChanged()
                }
            }
        })

        viewModel.showLoading.observe(this, Observer { showLoading ->
            pb.visibility = if (showLoading) View.VISIBLE else View.GONE
        })

        viewModel.loadNews()
    }


    private fun initializeAds(){
        MobileAds.initialize(context)

       // adView.adSize = AdSize.BANNER
        binding.adId = "my unit id"
        val adRequest = AdRequest.Builder().build()
        binding.adView.loadAd(adRequest)
    }

}

我想知道我到底在哪里犯了错误我已经尝试了所有 StackOverflow 甚至文档示例它确实解决了我的问题我尝试过使用 kotlin 和 XML 文件以编程方式设置单元 ID 和大小，但它根本不起作用提示将不胜感激。

Answer 1

 //Admob banner
        MobileAds.initialize(this, new OnInitializationCompleteListener()  {
            @Override
            public void onInitializationComplete(InitializationStatus initializationStatus) {
            }
        });

        mAdView = findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
        mAdView.setAdListener(new AdListener() {
            @Override
            public void onAdLoaded() {
                super.onAdLoaded();
                mAdView.setVisibility(View.VISIBLE);
            }

            @Override
            public void onAdFailedToLoad(int i) {
                super.onAdFailedToLoad(i);
                mAdView.setVisibility(View.GONE);
            }


        });

xml

<com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:layout_marginBottom="30dp"
        android:visibility="gone"
        app:adSize="BANNER"
        app:adUnitId="@string/ad_unit_id_banner1" />

清单

 <meta-data
                android:name="com.google.android.gms.ads.APPLICATION_ID"
                android:value="@string/app_id"/>
        <meta-data
            android:name="com.google.android.gms.ads.AD_MANAGER_APP"
            android:value="true" />

Answer 2

你可以这样写：

val adRequest = AdRequest.Builder().build()
binding.adId = "my unit id"
binding.adView.loadAd(adRequest)