沒有這樣的表問題

Question

我想查詢我的數據庫中的第二個表的數據。

我能夠插入到數據庫中（或正在帶領相信它是成功的）

我已經改變了版本號，但是這似乎仍有效果都沒有。

任何人都可以看到我在這裏做錯了嗎？

目前，我發現了以下錯誤：

的logcat：

01-20 20:32:15.076: E/AndroidRuntime(303): FATAL EXCEPTION: main 
01-20 20:32:15.076: E/AndroidRuntime(303): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.flybase2/com.example.flybase2.ViewAppointments}: android.database.sqlite.SQLiteException: no such table: appointmentTable: , while compiling: SELECT _id, app_name, app_type, app_time, app_date, app_comments FROM appointmentTable ORDER BY app_name ASC 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.os.Handler.dispatchMessage(Handler.java:99) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.os.Looper.loop(Looper.java:123) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread.main(ActivityThread.java:4627) 
01-20 20:32:15.076: E/AndroidRuntime(303): at java.lang.reflect.Method.invokeNative(Native Method) 
01-20 20:32:15.076: E/AndroidRuntime(303): at java.lang.reflect.Method.invoke(Method.java:521) 
01-20 20:32:15.076: E/AndroidRuntime(303): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
01-20 20:32:15.076: E/AndroidRuntime(303): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
01-20 20:32:15.076: E/AndroidRuntime(303): at dalvik.system.NativeStart.main(Native Method) 
01-20 20:32:15.076: E/AndroidRuntime(303): Caused by: android.database.sqlite.SQLiteException: no such table: appointmentTable: , while compiling: SELECT _id, app_name, app_type, app_time, app_date, app_comments FROM appointmentTable ORDER BY app_name ASC 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:91) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:80) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:46) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1345) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1229) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1184) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1301) 
01-20 20:32:15.076: E/AndroidRuntime(303): at com.example.flybase2.DBHandler.getAppointmentsData(DBHandler.java:325) 
01-20 20:32:15.076: E/AndroidRuntime(303): at com.example.flybase2.ViewAppointments.onCreate(ViewAppointments.java:34) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
01-20 20:32:15.076: E/AndroidRuntime(303): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 

列變量：

public static final String KEY_ROWAPPID = "_appid"; 
public static final String KEY_NAMEAPP = "app_name"; 
public static final String KEY_TYPEAPP = "app_type"; 
public static final String KEY_TIMEAPP = "app_time"; 
public static final String KEY_DATEAPP = "app_date"; 
public static final String KEY_COMMENTAPP = "app_comments"; 
public static final String KEY_ALARM = "app_alarm"; 

表名稱和版本：

private static String DATABASE_TABLEAPP = "appointmentTable"; 
private static int DATABASE_VERSIONAPP = 1; 

我的繼承人創造我的ThOD：

@Override 
    public void onCreate(SQLiteDatabase db) { 


     db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" + 
       KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + 
       KEY_NAME + " TEXT NOT NULL, " + 
       KEY_TEL + " TEXT NOT NULL, " + 
       KEY_EMAIL + " TEXT NOT NULL, " + 
       KEY_COMMENTS + " TEXT NOT NULL);" 

       ); 

     db.execSQL("CREATE TABLE " + DATABASE_TABLEAPP + " (" + 
       KEY_ROWAPPID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + 
       KEY_NAMEAPP + " TEXT NOT NULL, " + 
       KEY_TYPEAPP + " TEXT NOT NULL, " + 
       KEY_TIMEAPP + " TEXT NOT NULL, " + 
       KEY_DATEAPP + " TEXT NOT NULL, " + 
       KEY_COMMENTAPP + " TEXT NOT NULL, " + 
       KEY_ALARM + " BOOLEAN NOT NULL);" 

       ); 

在升級：

@Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 

     db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE); 
     onCreate(db); 

     db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLEAPP); 
     onCreate(db); 
    } 

方法用於查詢表：

public Cursor getAppointmentsData() { 
     String [] columns = new String[]{KEY_ROWAPPID, KEY_NAMEAPP, KEY_TYPEAPP, KEY_TIMEAPP, KEY_DATEAPP, KEY_COMMENTAPP}; 
     Cursor c = ourDatabase.query(DATABASE_TABLEAPP, columns, null, null, null, null, KEY_NAMEAPP + " ASC", null); 
     return c; 

Answer 1

刪除第一onCreate(db)電話。

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 

    db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE); 
    db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLEAPP); 
    onCreate(db); 
}