DBHelper를 통해서 arraylist를 만들어서 mainActivity의 listview에 값으로 넣으려고 합니다.
그래서 만들어서 실행했는데 다음과 같은 오류가 납니다.
뭐가 문제인지 모르겠습니다... 도와주세요..(전체 코드는 댓글에 남겨두겠습니다.)
<logcat>
Caused by: java.lang.ClassCastException: com.example.mytest.WorkList cannot be cast to java.util.List
at com.example.mytest.MainActivity.onResume(MainActivity.java:149)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1456)
at android.app.Activity.performResume(Activity.java:8344)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4854)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4901)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2307)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:246)
at android.app.ActivityThread.main(ActivityThread.java:8512)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
해당 구문
Adapter = new ArrayAdapter<String>(this , activity_list_item, (List<String>) WorkListinfo);