所以我试着在Youtube上搜索: "Attempt to invoke interface method 'intandroid.database.Cursor.getCount()' on a: Attempt to invoke interface method 'int android.database.Cursor.getColumnCount()' on a null object: Attempt to invoke interface method
Unable to start activity ComponentInfo{plp.cs4b.thesis.drawitapp/plp.cs4b.thesis.drawitapp.PlayGame}: java.lang.NullPointerExceptionAttempt to invoke virtual method 'java.lang.String plp.cs4b.thesis.drawitapp.Player.getName()' on a nullZygoteInit.java:899)
at com
我正在创建一个将使用TMDb应用程序接口的电影列表应用程序。我已经创建了两个spearate片段,它们调用不同的api方法。出现java.lang.NullPointerException:尝试调用接口方法'int java.util.List.size()‘时出现null对象引用错误。AndroidRuntime: FATAL EXCEPTION: main
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getBottom()'on a null object reference atRuntimeInit.java:494)
at com.android.internal.os.Zygote
activity ComponentInfo{bertaberim.team.beertaberim/bertaberim.team.beertaberim.ItemActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.ViewGroup.getPaddingLeft()' on a null object reference
我试图从MovieGlu应用程序接口返回一个影院列表,但是在我的代码的第98行得到了空指针异常。电影回归了,我正试图让影院以同样的方式回归。API确实在postman中返回它们。运行应用程序时出现以下错误:
java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.List com.example.retrofitapp.model.nearbycinemas.Cinema.getCinemas()' on a null obj