我是Google AdMob的新手。我有一个PreferenceActivity，我想在里面放一个横幅。我添加了https://developers.google.com/mobile-ads-sdk/docs/admob/fundamentals#play提供的谷歌代码。但是当我在运行应用程序时尝试转到设置部分时，我似乎遇到了这个错误。
我的代码如下：
public class Pref extends PreferenceActivity implements
SharedPreferences.OnSharedPreferenceChangeListener {
/** The view to show the ad. */
private AdView adView;
/* Your ad unit id. Replace with your actual ad unit id. */
private static final String AD_UNIT_ID = "MY KEY";
@SuppressWarnings("deprecation")
protected void onCreate(Bundle paramBundle) {
super.onCreate(paramBundle);
getPreferenceManager()
.setSharedPreferencesName("com.gordondev.copycat");
addPreferencesFromResource(2130903040);
getPreferenceManager().getSharedPreferences()
.registerOnSharedPreferenceChangeListener(this);
// Create an ad.
adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId(AD_UNIT_ID);
// Add the AdView to the view hierarchy. The view will have no size
// until the ad is loaded.
LinearLayout layout = (LinearLayout) findViewById(R.id.ad_layout);
layout.addView(adView);
// Create an ad request. Check logcat output for the hashed device ID to
// get test ads on a physical device.
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice("INSERT_YOUR_HASHED_DEVICE_ID_HERE")
.build();
// Start loading the ad in the background.
adView.loadAd(adRequest);
}
/** Called before the activity is destroyed. */
@SuppressWarnings("deprecation")
protected void onDestroy() {
getPreferenceManager().getSharedPreferences()
.unregisterOnSharedPreferenceChangeListener(this);
if (adView != null) {
adView.destroy();
}
super.onDestroy();
}
public void onSharedPreferenceChanged(
SharedPreferences paramSharedPreferences, String paramString) {
}
@Override
public void onResume() {
super.onResume();
if (adView != null) {
adView.resume();
}
}
@Override
public void onPause() {
if (adView != null) {
adView.pause();
}
super.onPause();
}
}
这是我的Logcat错误：
03-13 07:21:26.192: E/AndroidRuntime(25248): FATAL EXCEPTION: main
03-13 07:21:26.192: E/AndroidRuntime(25248): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.gordondev.copycat/com.gordondev.copycat.Pref}: android.view.InflateException: Binary XML file line #2: Error inflating class LinearLayout
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2266)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2316)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread.access$600(ActivityThread.java:150)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1298)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.os.Handler.dispatchMessage(Handler.java:99)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.os.Looper.loop(Looper.java:213)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread.main(ActivityThread.java:5225)
03-13 07:21:26.192: E/AndroidRuntime(25248): at java.lang.reflect.Method.invokeNative(Native Method)
03-13 07:21:26.192: E/AndroidRuntime(25248): at java.lang.reflect.Method.invoke(Method.java:525)
03-13 07:21:26.192: E/AndroidRuntime(25248): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
03-13 07:21:26.192: E/AndroidRuntime(25248): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
03-13 07:21:26.192: E/AndroidRuntime(25248): at dalvik.system.NativeStart.main(Native Method)
03-13 07:21:26.192: E/AndroidRuntime(25248): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class LinearLayout
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:441)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.inflate(GenericInflater.java:317)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.inflate(GenericInflater.java:263)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:272)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.PreferenceActivity.addPreferencesFromResource(PreferenceActivity.java:1439)
03-13 07:21:26.192: E/AndroidRuntime(25248): at com.gordondev.copycat.Pref.onCreate(Pref.java:27)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.Activity.performCreate(Activity.java:5133)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2230)
03-13 07:21:26.192: E/AndroidRuntime(25248): ... 11 more
03-13 07:21:26.192: E/AndroidRuntime(25248): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.preference.LinearLayout" on path: DexPathList[[zip file "/data/app/com.gordondev.copycat-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.gordondev.copycat-1, /vendor/lib, /system/lib]]
03-13 07:21:26.192: E/AndroidRuntime(25248): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
03-13 07:21:26.192: E/AndroidRuntime(25248): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
03-13 07:21:26.192: E/AndroidRuntime(25248): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.createItem(GenericInflater.java:375)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.onCreateItem(GenericInflater.java:417)
03-13 07:21:26.192: E/AndroidRuntime(25248): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:428)
03-13 07:21:26.192: E/AndroidRuntime(25248): ... 19 more
我的自定义布局ad_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:id="@+id/ad_layout"
android:layout_height="match_parent" android:orientation="vertical">
</LinearLayout>
答案 0 :(得分：1)
这里有几个问题：