Question

当我尝试执行此应用时，我收到此错误。我不知道为什么我收到这个错误。在创建表时，是否将其留空或尝试用值填充它以启动，因为我的应用程序使用EasyModbusJava库并且需要一个从属ID来连接我没有通过，我不希望它能够连接当前。如果这只是使用表创建的问题，我需要做出哪些更改？

08-21 13：31：48.342 8821-8821 /？ E / Zygote：v2 08-21 13：31：48.344 8821-8821 /？ E / Zygote：accessInfo：0 08-21 13：31：49.407 8821-8821 / com.wavefloatrooms.wavefloatrooms E / SQLiteLog：（1）near＆＃34; Rooms＆＃34;：语法错误 08-21 13：31：49.418 8821-8821 / com.wavefloatrooms.wavefloatrooms E / AndroidRuntime：FATAL EXCEPTION：main 过程：com.wavefloatrooms.wavefloatrooms，PID：8821 java.lang.RuntimeException：无法启动活动ComponentInfo {com.wavefloatrooms.wavefloatrooms / com.wavefloatrooms.wavefloatrooms.OverviewListActivity}：android.database.sqlite.SQLiteException：near＆＃34; Rooms＆＃34;：语法错误（代码1 ）:,同时编译：create table Float Rooms（_id整数主键自动增量，从属ID，房间名称） ################################################## ############### 错误代码：1（SQLITE_ERROR）引起：SQL（查询）错误或缺少数据库。（附近＆＃34;房间＆＃34 ;:语法错误（代码1）:,编译时：创建表格浮动房间（_id整数主键自动增量，从属ID，房间名称）） ################################################## ############### 在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2947）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:3008）在android.app.ActivityThread.-wrap14（ActivityThread.java）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1650）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:154）在android.app.ActivityThread.main（ActivityThread.java:6688） at java.lang.reflect.Method.invoke（Native Method）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1468）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1358）引起：android.database.sqlite.SQLiteException：near＆＃34; Rooms＆＃34 ;:语法错误（代码1）:,同时编译：create table Float Rooms（_id整数主键自动增量，slave ID，房间名称） ################################################## ############### 错误代码：1（SQLITE_ERROR）引起：SQL（查询）错误或缺少数据库。（附近＆＃34;房间＆＃34 ;:语法错误（代码1）:,编译时：创建表格浮动房间（_id整数主键自动增量，从属ID，房间名称）） ################################################## ############### 在android.database.sqlite.SQLiteConnection.nativePrepareStatement（本机方法）在android.database.sqlite.SQLiteConnection.acquirePreparedStatement（SQLiteConnection.java:1005）在android.database.sqlite.SQLiteConnection.prepare（SQLiteConnection.java:570）在android.database.sqlite.SQLiteSession.prepare（SQLiteSession.java:588）在android.database.sqlite.SQLiteProgram。（SQLiteProgram.java:59）在android.database.sqlite.SQLiteStatement。（SQLiteStatement.java:31）在android.database.sqlite.SQLiteDatabase.executeSql（SQLiteDatabase.java:1976）在android.database.sqlite.SQLiteDatabase.execSQL（SQLiteDatabase.java:1907）在com.wavefloatrooms.wavefloatrooms.database.FloatBaseHelper.onCreate（FloatBaseHelper.java:23）在android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked（SQLiteOpenHelper.java:251）在android.database.sqlite.SQLiteOpenHelper.getWritableDatabase（SQLiteOpenHelper.java:163）在com.wavefloatrooms.wavefloatrooms.FloatLab。（FloatLab.java:35）在com.wavefloatrooms.wavefloatrooms.FloatLab.get（FloatLab.java:28）在com.wavefloatrooms.wavefloatrooms.OverviewListFragment.updateUI（OverviewListFragment.java:45） at com.wavefloatrooms.wavefloatrooms.OverviewListFragment.onCreateView（OverviewListFragment.java:34）在android.support.v4.app.Fragment.performCreateView（Fragment.java:2192）在android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:1299）在android.support.v4.app.FragmentManagerImpl.moveFragmentToExpectedState（FragmentManager.java:1528）在android.support.v4.app.FragmentManagerImpl.moveToState（FragmentManager.java:1595）在android.support.v4.app.BackStackRecord.executeOps（BackStackRecord.java:758）在android.support.v4.app.FragmentManagerImpl.executeOps（FragmentManager.java:2363）在android.support.v4.app.FragmentManagerImpl.executeOpsTogether（FragmentManager.java:2149）在android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps（FragmentManager.java:2103） 08-21 13：31：49.418 8821-8821 / com.wavefloatrooms.wavefloatrooms E / AndroidRuntime：at android.support.v4.app.FragmentManagerImpl.execPendingActions（FragmentManager.java:2013）在android.support.v4.app.FragmentController.execPendingActions（FragmentController.java:388）在android.support.v4.app.FragmentActivity.onStart（FragmentActivity.java:607）在android.support.v7.app.AppCompatActivity.onStart（AppCompatActivity.java:178）在android.app.Instrumentation.callActivityOnStart（Instrumentation.java:1256）在android.app.Activity.performStart（Activity.java:6929）在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2910） ... 9更多

public class FloatBaseHelper extends SQLiteOpenHelper {
    private static final int VERSION = 1;
    private static final String DATABASE_NAME = "floatBase.db";

    public FloatBaseHelper(Context context){
        super(context, DATABASE_NAME, null, VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase sqLiteDatabase) {
        sqLiteDatabase.execSQL("create table " + RoomTable.NAME + "(" +
            "_id integer primary key autoincrement, " + RoomTable.Cols.SLAVE_ID +
            ", " + RoomTable.Cols.ROOM_NAME + ")");
    }

    @Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {

    }

public class FloatRoomCursorWrapper extends CursorWrapper {

    public FloatRoomCursorWrapper(Cursor cursor) {
        super(cursor);
    }

    public FloatRoom getFloatRoom(){
        int slaveID = getInt(getColumnIndex(RoomTable.Cols.SLAVE_ID));
        String roomName = getString(getColumnIndex(RoomTable.Cols.ROOM_NAME));
        FloatRoom room = new FloatRoom(slaveID);
        room.setRoomName(roomName);

        return room;
    }
}

    public class OverviewListFragment extends Fragment {

    private RecyclerView mRoomRecyclerView;
    private RoomAdapter mAdapter;

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_overview_list, container, false);

        mRoomRecyclerView = (RecyclerView) view.findViewById(R.id.floatroom_recylerview);
        mRoomRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));

        updateUI();
        return view;
    }

    @Override
    public void onResume() {
        super.onResume();
        updateUI();
    }

    private void updateUI() {
        FloatLab floatlab = FloatLab.get(getActivity());
        List<FloatRoom> rooms = floatlab.getFloatRooms();

        if(mAdapter == null){
            mAdapter = new RoomAdapter(rooms);
            mRoomRecyclerView.setAdapter(mAdapter);
        }else{
            mAdapter.setFloatRooms(rooms);
            mAdapter.notifyDataSetChanged();
        }
    }

    private class RoomHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        private TextView mTimeRemainingTextView;
        private TextView mRoomNameTextView;
        private ImageButton mControlPanelBtn;
        private ProgressBar mTimeProgressBar;

        private FloatRoom mFloatRoom;

        public RoomHolder(LayoutInflater inflater, ViewGroup parent) {
            super(inflater.inflate(R.layout.list_item_floatroom, parent, false));
            initializeVariables();
        }

        private void initializeVariables() {
            mTimeRemainingTextView = (TextView) itemView.findViewById(R.id.time_remaining_textView);
            mRoomNameTextView = (TextView) itemView.findViewById(R.id.room_name_textView);
            mControlPanelBtn = (ImageButton) itemView.findViewById(R.id.control_panel_btn);
            mTimeProgressBar = (ProgressBar) itemView.findViewById(R.id.progressBar);
        }

        public void bind(FloatRoom room) {
            mFloatRoom = room;
            mRoomNameTextView.setText(mFloatRoom.getRoomName());
            mTimeRemainingTextView.setText("Time Remaining: " + mFloatRoom.getSessionTimeRemaining() + " minutes");
            mControlPanelBtn.setOnClickListener(this);
        }


        @Override
        public void onClick(View view) {
            startControlPanel();
        }

        private void startControlPanel() {
            Intent intent;
            switch (mFloatRoom.getRoomType()){
                case 0:
                    intent = new StandardRoomActivity().newIntent(getActivity(), mFloatRoom.getSlaveID());
                    startActivity(intent);
                    break;
                case 1:
                    intent = new EliteRoomActivity().newIntent(getActivity(), mFloatRoom.getSlaveID());
                    startActivity(intent);
                    break;
                default:
                    Toast.makeText(getActivity(), "ERROR Starting Auto mode!", Toast.LENGTH_LONG);
            }
        }
    }

    private class RoomAdapter extends RecyclerView.Adapter<RoomHolder> {

        private List<FloatRoom> mRooms;

        public RoomAdapter(List<FloatRoom> rooms){
            mRooms = rooms;
        }

        @Override
        public RoomHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            LayoutInflater layoutInflater = LayoutInflater.from(getActivity());
            return new RoomHolder(layoutInflater, parent);
        }

        @Override
        public void onBindViewHolder(RoomHolder holder, int position) {
            FloatRoom room = mRooms.get(position);
            holder.bind(room);
        }

        @Override
        public int getItemCount() {
            return mRooms.size();
        }

        public void setFloatRooms(List<FloatRoom> rooms){
            mRooms = rooms;
        }
    }

}

Answer 1

RoomTable.NAME似乎是Float Rooms。表名中不能有空格。将其重命名为其中没有空格的其他内容。

java.lang.RuntimeException：无法启动活动ComponentInfo android.database.sqlite.SQLiteException？

1 个答案: