안드로이드 SQLite는 그런 테이블에없는 예외

Question

다음과 같이 테이블에 새로운 레코드를 삽입하는 동안 나는 예외가 있어요

:

DatabaseHandler db = new DatabaseHandler(this); 
Log.d("INSERT: ", "Inserting..."); 
db.addAirport(new Airport("Ben Gurion","LLBG","TLV","Israel","Tel-Aviv","IL")); 

DatabaseHandler.java :

public class DatabaseHandler extends SQLiteOpenHelper { 

    private static final int DATABASE_VERSION = 1; 

    private static final String DATABASE_NAME = "airportsDB"; 

    private static final String TABLE_AIRPORTS = "airports"; 

    private static final String KEY_ID = "id"; 
    private static final String KEY_NAME = "airportname"; 
    private static final String KEY_ICAO = "icao"; 
    private static final String KEY_IATA = "iata"; 
    private static final String KEY_COUNTRY = "country"; 
    private static final String KEY_CITY = "city"; 
    private static final String KEY_COUNTRYCODE = "countrycode"; 

    public DatabaseHandler(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 


    @Override 
    public void onCreate(SQLiteDatabase db) { 
      String CREATE_AIRPORTS_TABLE = "CREATE TABLE " + TABLE_AIRPORTS+" (" 
        +KEY_ID+" INTEGER PRIMARY KEY, "+KEY_NAME+" TEXT, "+KEY_ICAO+ 
        " TEXT, "+KEY_IATA+" TEXT, "+KEY_COUNTRY+" TEXT, "+KEY_CITY+ 
        " TEXT, "+KEY_COUNTRYCODE+" TEXT"+")"; 
      db.execSQL(CREATE_AIRPORTS_TABLE); 
     } 


    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     // Drop older table if existed 
     db.execSQL("DROP TABLE IF EXISTS " + TABLE_AIRPORTS); 

     // Create tables again 
     onCreate(db); 
    } 

    public void addAirport(Airport airport){ 
     SQLiteDatabase db = this.getWritableDatabase(); 

     ContentValues values = new ContentValues(); 
     values.put(KEY_NAME, airport.getName()); 
     values.put(KEY_ICAO, airport.getICAO()); 
     values.put(KEY_IATA, airport.getIATA()); 
     values.put(KEY_COUNTRY, airport.getCountry()); 
     values.put(KEY_CITY, airport.getCity()); 
     values.put(KEY_COUNTRYCODE,airport.getCountryCode()); 

     db.insert(TABLE_AIRPORTS,null,values); 
     db.close(); 
    } 


} 

Airport.java

public class Airport { 

    int id; 
    String name, icao, iata, country, city, countryCode; 

    public Airport() { 

    } 

    public Airport(int id,String name,String icao,String iata, String country, String city, String countryCode) 
    { 
     this.id = id; 
     this.name = name; 
     this.icao = icao; 
     this.iata = iata; 
     this.country = country; 
     this.city = city; 
     this.countryCode = countryCode; 
    } 

    public Airport(String name,String icao,String iata, String country, String city, String countryCode) 
    { 
     this.name = name; 
     this.icao = icao; 
     this.iata = iata; 
     this.country = country; 
     this.city = city; 
     this.countryCode = countryCode; 
    } 

    public String getName() { 
     return this.name; 
    } 

    public String getICAO() 
    { 
     return this.icao; 
    } 

    public String getIATA() 
    { 
     return this.iata; 
    } 

    public String getCountry() 
    { 
     return this.country; 
    } 

    public String getCity() 
    { 
     return this.city; 
    } 

    public String getCountryCode() 
    { 
     return this.countryCode; 
    } 

} 

로그 캣 오류 :

01-28 11:39:24.150 1877-1877/com.example.avis.flightstats E/SQLiteLog﹕ (1) no such table: airports 
01-28 11:39:24.150 1877-1877/com.example.avis.flightstats E/SQLiteDatabase﹕ Error inserting iata=TLV countrycode=IL airportname=Ben Gurion icao=LLBG city=Tel-Aviv country=Israel 
    android.database.sqlite.SQLiteException: no such table: airports (code 1): , while compiling: INSERT INTO airports(iata,countrycode,airportname,icao,city,country) VALUES (?,?,?,?,?,?) 
      at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
      at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889) 
      at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500) 
      at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
      at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
      at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) 
      at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467) 
      at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339) 
      at com.example.avis.flightstats.DatabaseHandler.addAirport(DatabaseHandler.java:62) 
      at com.example.avis.flightstats.MenuActivity.onCreate(MenuActivity.java:24) 
      at android.app.Activity.performCreate(Activity.java:5231) 
      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
      at android.app.ActivityThread.access$800(ActivityThread.java:135) 
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
      at android.os.Handler.dispatchMessage(Handler.java:102) 
      at android.os.Looper.loop(Looper.java:136) 
      at android.app.ActivityThread.main(ActivityThread.java:5017) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:515) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
      at dalvik.system.NativeStart.main(Native Method) 
01-28 11:39:24.210 1877-1877/com.example.avis.flightstats D/﹕ HostConnection::get() New Host Connection established 0xb8d8ca30, tid 1877 
01-28 11:39:24.270 1877-1877/com.example.avis.flightstats W/EGL_emulation﹕ eglSurfaceAttrib not implemented 
01-28 11:39:24.270 1877-1877/com.example.avis.flightstats D/OpenGLRenderer﹕ Enabling debug mode 0 

여러 번 테이블 생성 쿼리를 확인했지만 완벽하게 잘된 것 같습니다. 아이디어가 있으십니까?

Answer 1

getWritableDatabase()이 호출되었는지 확인해야합니다. 그렇지 않으면 onCreate() 코드가 실행되지 않습니다. 도우미를 만들면 onCreate()이 호출되지 않으므로 테이블을 삽입 할 때 테이블이 만들어지지 않습니다.

편집 :부터 API documentsgetWritableDatabase()에 대한 :

Create and/or open a database that will be used for reading and writing. The first time this is called, the database will be opened and onCreate(SQLiteDatabase) , onUpgrade(SQLiteDatabase, int, int) and/or onOpen(SQLiteDatabase) will be called.