Android-沒有這樣的列錯誤

在我告訴我我的一列不存在的情況下，彈出錯誤。此列存在於我的數據庫的Contract類中，但由於某種原因無法被遊標識別。Android-沒有這樣的列錯誤

logcat的

03-16 16:37:29.029 8240-8240/com.compscitutorials.basigarcia.ramfernoscout E/SQLiteLog: (1) no such column: TEAM_NUMBER 
03-16 16:37:29.030 8240-8240/com.compscitutorials.basigarcia.ramfernoscout D/AndroidRuntime: Shutting down VM 
03-16 16:37:29.030 8240-8240/com.compscitutorials.basigarcia.ramfernoscout E/AndroidRuntime: FATAL EXCEPTION: main 
                          Process: com.compscitutorials.basigarcia.ramfernoscout, PID: 8240 
                          android.database.sqlite.SQLiteException: no such column: TEAM_NUMBER (code 1): , while compiling: SELECT TEAM_NUMBER, PORTCULLIS, CHEVAL_DE_FRISE, MOAT, RAMPARTS, DRAWBRIDGE, SALLY_PORT, ROCK_WALL, ROCK_TERRAIN, LOW_BAR FROM scout_table 
                           at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
                           at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:887) 
                           at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:498) 
                           at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
                           at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
                           at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37) 
                           at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44) 
                           at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1316) 
                           at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1163) 
                           at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1034) 
                           at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1202) 
                           at com.compscitutorials.basigarcia.ramfernoscout.DatabaseHelper.getInformation(DatabaseHelper.java:63) 
                           at com.compscitutorials.basigarcia.ramfernoscout.ScoutFragment.onCreateView(ScoutFragment.java:40) 
                           at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
                           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
                           at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) 
                           at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738) 
                           at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617) 
                           at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:517) 
                           at android.os.Handler.handleCallback(Handler.java:739) 
                           at android.os.Handler.dispatchMessage(Handler.java:95) 
                           at android.os.Looper.loop(Looper.java:148) 
                           at android.app.ActivityThread.main(ActivityThread.java:5417) 
                           at java.lang.reflect.Method.invoke(Native Method) 
                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

DatabaseHelper.java

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 

public class DatabaseHelper extends SQLiteOpenHelper { 
    public static final String DATABASE_NAME = "Scout.db"; 
    private static final int DATABASE_VERSION = 1; 
    private static final String CREATE_QUERY = "CREATE TABLE " + DatabaseContract.NewDataInfo.TABLE_NAME + "(" + DatabaseContract.NewDataInfo.COL_NUMBER + 
      " INTEGER," + DatabaseContract.NewDataInfo.COL_PORTCULLIS + " TEXT," + DatabaseContract.NewDataInfo.COL_CHEVAL_FRISE + " TEXT," + 
      DatabaseContract.NewDataInfo.COL_MOAT + " TEXT," + DatabaseContract.NewDataInfo.COL_RAMPARTS + " TEXT," + DatabaseContract.NewDataInfo.COL_DRAWBRIDGE + 
      " TEXT," + DatabaseContract.NewDataInfo.COL_SALLY_PORT + " TEXT," + DatabaseContract.NewDataInfo.COL_ROCK_WALL + " TEXT," + 
      DatabaseContract.NewDataInfo.COL_ROCK_TERRAIN + " TEXT," + DatabaseContract.NewDataInfo.COL_LOW_BAR + " TEXT);"; 

    public DatabaseHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
     Log.e("DATABASE OPERATIONS", "Database created/opened ..."); 
    } //End of DatabaseHelper 

    @Override 
    public void onCreate(SQLiteDatabase db) { 
     //Create Query 
     db.execSQL(CREATE_QUERY); 

     //Display Log message 
     Log.e("DATABASE OPERATIONS", "Table created..."); 
    } //End of onCreate 

    public void addInformation(String eNumber, String ePoticullis, String eChevalFrise, String eMoat, String eRamparts, String eDrawbridge, String eSallyPort, 
           String eRockWall, String eRockTerrain, String eLowBar, SQLiteDatabase db) { 
     //Instantiate contentValues 
     ContentValues contentValues = new ContentValues(); 

     //Insert all content values 
     contentValues.put(DatabaseContract.NewDataInfo.COL_NUMBER, eNumber); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_PORTCULLIS, ePoticullis); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_CHEVAL_FRISE, eChevalFrise); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_MOAT, eMoat); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_RAMPARTS, eRamparts); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_DRAWBRIDGE, eDrawbridge); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_SALLY_PORT, eSallyPort); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_ROCK_WALL, eRockWall); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_ROCK_TERRAIN, eRockTerrain); 
     contentValues.put(DatabaseContract.NewDataInfo.COL_LOW_BAR, eLowBar); 

     //Insert content values into table 
     db.insert(DatabaseContract.NewDataInfo.TABLE_NAME, null, contentValues); 

     //Display log message 
     Log.e("DATABASE OPERATIONS", "One row inserted..."); 
    } //End of addInformation 

    public Cursor getInformation(SQLiteDatabase db){ 
     Cursor cursor; 
     String[] projections = {DatabaseContract.NewDataInfo.COL_NUMBER, DatabaseContract.NewDataInfo.COL_PORTCULLIS, 
       DatabaseContract.NewDataInfo.COL_CHEVAL_FRISE, DatabaseContract.NewDataInfo.COL_MOAT,DatabaseContract.NewDataInfo.COL_RAMPARTS, 
       DatabaseContract.NewDataInfo.COL_DRAWBRIDGE, DatabaseContract.NewDataInfo.COL_SALLY_PORT, DatabaseContract.NewDataInfo.COL_ROCK_WALL, 
       DatabaseContract.NewDataInfo.COL_ROCK_TERRAIN, DatabaseContract.NewDataInfo.COL_LOW_BAR}; 
     cursor = db.query(DatabaseContract.NewDataInfo.TABLE_NAME, projections, null, null, null, null, null); 
     return cursor; 
    } //End of getInformation 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
    } //End of onUpgrade 
} //End of class

ScoutFragment.java

import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.support.design.widget.FloatingActionButton; 
import android.support.v4.app.Fragment; 
import android.support.v4.app.FragmentTransaction; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ListView; 

/** 
* A simple {@link Fragment} subclass. 
*/ 
public class ScoutFragment extends Fragment { 

    FloatingActionButton addDataScout; 
    ListView eListScoutInfo; 
    SQLiteDatabase sqLiteDatabase; 
    DatabaseHelper databaseHelper; 
    Cursor cursor; 
    ListScoutInfoAdapter listScoutInfoAdapter; 

    public ScoutFragment() { 
     // Required empty public constructor 
    } //End of ScoutFragment 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 
     View view = inflater.inflate(R.layout.fragment_scout, null, false); 
     view.setBackgroundColor(Color.WHITE); 
     eListScoutInfo = (ListView) view.findViewById(R.id.listScoutInfo); 
     listScoutInfoAdapter = new ListScoutInfoAdapter(getActivity().getApplicationContext(), R.layout.row_layout); 
     eListScoutInfo.setAdapter(listScoutInfoAdapter); 
     databaseHelper = new DatabaseHelper(getActivity().getApplicationContext()); 
     sqLiteDatabase = databaseHelper.getReadableDatabase(); 
     cursor = databaseHelper.getInformation(sqLiteDatabase); 

     //Checks if information is available in cursor 
     if(cursor.moveToFirst()){ 
      do { 
       //Delcare all strings 
       String teamNumber, portcullis, chevalFrise, moat, ramparts, drawbridge, sallyPort, rockWall, rockTerrain, lowBar; 

       //Get strings from cursor 
       teamNumber = cursor.getString(0); 
       portcullis = cursor.getString(1); 
       chevalFrise = cursor.getString(2); 
       moat = cursor.getString(3); 
       ramparts = cursor.getString(4); 
       drawbridge = cursor.getString(5); 
       sallyPort = cursor.getString(6); 
       rockWall = cursor.getString(7); 
       rockTerrain = cursor.getString(8); 
       lowBar = cursor.getString(9); 

       //Get methods from DatabaseProvider 
       DatabaseProvider databaseProvider = new DatabaseProvider(teamNumber, portcullis, chevalFrise, moat, ramparts, 
         drawbridge, sallyPort, rockWall, rockTerrain, lowBar); 

       //Pass objects to add method 
       listScoutInfoAdapter.add(databaseProvider); 
      } while (cursor.moveToNext()); 
     } //End of if statement 

     //Setups Floating Action Button 
     addDataScout = (FloatingActionButton) view.findViewById(R.id.fab); 
     addDataScout.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View v) { 
       AddScoutDataFragment fragment = new AddScoutDataFragment(); 
       FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction(); 
       fragmentTransaction.setCustomAnimations(R.anim.enter_from_right, R.anim.exit_to_left, R.anim.enter_from_left, R.anim.exit_to_right); 
       fragmentTransaction.replace(R.id.fragment_container, fragment); 
       fragmentTransaction.commit(); 
      } //End of onClick 
     }); //End of setOnClickListener 
     return view; 
    } //End of onCreateView 
} //End of class

DatabaseContract.java

public class DatabaseContract { 
    public static abstract class NewDataInfo { 
     public static final String TABLE_NAME = "scout_table"; 
     public static final String COL_NUMBER = "TEAM_NUMBER"; 
     public static final String COL_PORTCULLIS = "PORTCULLIS"; 
     public static final String COL_CHEVAL_FRISE = "CHEVAL_DE_FRISE"; 
     public static final String COL_MOAT = "MOAT"; 
     public static final String COL_RAMPARTS = "RAMPARTS"; 
     public static final String COL_DRAWBRIDGE = "DRAWBRIDGE"; 
     public static final String COL_SALLY_PORT = "SALLY_PORT"; 
     public static final String COL_ROCK_WALL = "ROCK_WALL"; 
     public static final String COL_ROCK_TERRAIN = "ROCK_TERRAIN"; 
     public static final String COL_LOW_BAR = "LOW_BAR"; 
    } //End of NewDataInfo 
} //End of class

來源

2016-03-16 Samer Alabi

您是否在第一版數據庫中創建了？ –

是的，我已經在第一個版本中創建它''private static final int DATABASE_VERSION = 1;' –

我認爲如果你得到像cursor.getLong（cursor.getColumnIndex（DatabaseContract .NewDataInfo。 COL_NUMBER））''爲他們所有 –

正如所討論的那樣，如果應用程序數據仍在開發中，那麼應該先清除應用程序數據，因爲如果在生產階段，您應該在OnUpgrad方法中執行此類升級，則應該在沒有此列的情況下創建數據庫。

來源

2016-03-16 21:25:55

Android-沒有這樣的列錯誤

回答

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