Android中的Firebase实时数据库错误
Android中的Firebase实时数据库错误
提问于 2018-04-08 04:13:02
这个错误发生在我点击我希望从火炉看到所有类别的类别时，我在其中放置所有类别名称和图片。我是Android工作室的初学者，在谷歌的搜索中找不到多少解决问题的方法。
04-07 18:35:13.271 25281-25281/com.example.a2015015407.edenparkproject E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.a2015015407.edenparkproject, PID: 25281
com.google.firebase.database.DatabaseException: Invalid Firebase Database url specified
at com.google.android.gms.internal.zzepd.zzqj(Unknown Source)
at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
at com.example.a2015015407.edenparkproject.CategoryFragment.onCreate(CategoryFragment.java:41)
at android.support.v4.app.Fragment.performCreate(Fragment.java:2328)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1379)
at android.support.v4.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1188)
at android.support.v4.app.FragmentTransition.calculateFragments(FragmentTransition.java:1071)
at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:115)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2379)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2337)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2244)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:702)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
Caused by: java.net.URISyntaxException: Invalid scheme specified: Category
at com.google.android.gms.internal.zzepd.zzqj(Unknown Source)
at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
at com.google.firebase.database.FirebaseDatabase.getInstance(Unknown Source)
at com.example.a2015015407.edenparkproject.CategoryFragment.onCreate(CategoryFragment.java:41)
at android.support.v4.app.Fragment.performCreate(Fragment.java:2328)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1379)
at android.support.v4.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1188)
at android.support.v4.app.FragmentTransition.calculateFragments(FragmentTransition.java:1071)
at android.support.v4.app.FragmentTransition.startTransitions(FragmentTransition.java:115)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2379)
at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2337)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2244)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:702)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756) Stack Overflow用户
回答已采纳
发布于 2018-04-08 04:23:50
从错误消息中可以看出，您正在使用无效的URL初始化Firebase：
指定的无效Firebase数据库url
我猜你是在给getReferenceFromUrl("some/path")打电话。要获得引用，请调用FirebaseDatabase.getInstance().getReference("some/path")，如文档的入门页面中所示。
更新:看起来您需要：
FirebaseDatabase.getInstance().getReference("Category")页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/49714348
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