请问使用RecordStore时候出现下面的错误怎么解决 javax.microedition.rms.RecordStoreException: deleteRecordStore error: record store is still open at javax.microedition.rms.RecordStore.deleteRecordStore(+60) at CommandEvent_MIDlet.destroyApp(+29) at javax.microedition.midlet.MIDletProxy.destroyApp(+8) at com.sun.midp.midlet.Scheduler.schedule(+324) at com.sun.midp.main.Main.runLocalClass(+28) at com.sun.midp.main.Main.main(+116)