我正在使用tutorial provided by Google在我的应用程序中实现Analytics,但我可能做错了一些事情,导致应用程序崩溃并出现java.lang.ClassCastException
这是 Google 提供的:
// Obtain the shared Tracker instance.
AnalyticsApplication application = (AnalyticsApplication) getApplication();
mTracker = application.getDefaultTracker();
这是我所做的更改,因为我使用 fragment
// This is where I get the error
AnalyticsApplication application = (AnalyticsApplication) getContext().getApplicationContext();
mTracker = application.getDefaultTracker();
更新:错误发生在这一行:
AnalyticsApplication application = (AnalyticsApplication) getContext().getApplicationContext();
这是我的 LogCat
FATAL EXCEPTION: main
Process: com.incorp.labs.appname, PID: 14095
java.lang.ClassCastException: android.app.Application cannot be cast to com.incorp.labs.appname.Helper.AnalyticsTracker
at com.incorp.labs.appname.OneFragment.onCreateView(OneFragment.java:126)
更新 2:这是 list 文件
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.incorp.labs.appname">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="com.android.vending.BILLING" />
<application
android:allowBackup="true"
android:icon="@mipmap/newlogops"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/MyMaterialTheme">
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name=".Splash"
android:screenOrientation="portrait" />
<activity
android:name=".MainActivity"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustPan" />
<activity
android:name=".OneFragment"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustPan" />
<activity
android:name=".TwoFragment"
android:screenOrientation="portrait" />
<activity
android:name=".Feedback"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustPan" />
<activity
android:name=".FourFragment"
android:screenOrientation="portrait" />
<activity
android:name=".SplashTimer"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="@android:style/Theme.Translucent" />
<service android:name=".FirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
<activity android:name=".AboutActivity"></activity>
</application>
最佳答案
只需更改此:-
AnalyticsTracker application = (AnalyticsTracker) getContext().getApplicationContext();
对此:-
AnalyticsApplication application = (AnalyticsApplication) getContext().getApplicationContext();
这是我们最优秀的人都会犯的明显错误之一!
关于java - Android - 应用程序崩溃并显示 "java.lang.ClassCastException",我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46236977/