android.widget.RadioButton不能转换为com.google.android.gms.ads.AdView

Question

我只是碰到了这个错误，我不知道它可能会导致...

11-04 14:03:13.170: E/AndroidRuntime(16246): FATAL EXCEPTION: main 
11-04 14:03:13.170: E/AndroidRuntime(16246): java.lang.ClassCastException: android.widget.RadioButton cannot be cast to com.google.android.gms.ads.AdView 
11-04 14:03:13.170: E/AndroidRuntime(16246): at com.brobox.zahlenraten.MainActivity$ZahlFragment.onCreateView(MainActivity.java:107) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.view.ViewPager.populate(ViewPager.java:914) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1436) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.View.measure(View.java:15525) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.View.measure(View.java:15525) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.View.measure(View.java:15525) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4825) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2438) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.View.measure(View.java:15525) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.Choreographer.doCallbacks(Choreographer.java:562) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.Choreographer.doFrame(Choreographer.java:532) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.os.Handler.handleCallback(Handler.java:725) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.os.Handler.dispatchMessage(Handler.java:92) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.os.Looper.loop(Looper.java:137) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at android.app.ActivityThread.main(ActivityThread.java:5227) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at java.lang.reflect.Method.invokeNative(Native Method) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at java.lang.reflect.Method.invoke(Method.java:511) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
11-04 14:03:13.170: E/AndroidRuntime(16246): at dalvik.system.NativeStart.main(Native Method) 

所以奇怪的是它说它不能从android.widget.RadioButton投射到com.google.android.gms.ads.AdView，但在表面上我不这么做。

这里是我的代码片段：

Random randomZahl = new Random(); 
     randomNum = randomZahl.nextInt((max) + 1) + 0; 

     AdView adView = (AdView) zahlView.findViewById(R.id.adView); //Error line 

     AdRequest adRequest = new AdRequest.Builder() 
       .addTestDevice(AdRequest.DEVICE_ID_EMULATOR) 
       .addTestDevice("3C7C32E5DD6FF99E1EE5A49DC7E90203").build(); 

     adView.loadAd(adRequest); 

及更高版本：

// Is the button now checked? 
    boolean checked = ((RadioButton) view).isChecked(); 

    // Check which radio button was clicked 
    switch (view.getId()) { 
    // RadioButtonGroup1 
    case R.id.radio_10: 
     if (checked) { 
      max = 10; 
      Toast.makeText(this, "Rate eine Zahl wischen 0 und 10", 
        Toast.LENGTH_LONG).show(); 
     } 

我希望有人能帮帮我！

Answer 1

接收各种视图的方法确实收到了adView，并且您总是尝试将视图转换为RadioButton以测试检查状态。你可以只移动checked =分配新建分配FY到交换机的情况下为你的单选按钮，在这里你肯定知道该视图是单选按钮类型，以防止异常：

// Check which radio button was clicked 
switch (view.getId()) { 
// RadioButtonGroup1 
case R.id.radio_10: 
    // Is the button now checked? 
    boolean checked = ((RadioButton) view).isChecked(); 

    if (checked) { 
     max = 10; 
     Toast.makeText(this, "Rate eine Zahl wischen 0 und 10", 
       Toast.LENGTH_LONG).show(); 
    }