GreenDao- android.database.sqlite.SQLiteException: table TAREAS 没有名为

Question

我正在尝试在我的 table Tareas 中插入数据。我，我正在使用 ORM (GreenDao)。但是当运行我的应用程序时，日志猫显示不存在 table 命名为 Tareas。我不明白这一点，因为当我创建数据库时，Tareas Table 有一个名为 Tipo 的列。

03-30 07:51:32.758 29389-29389/tipiwiny.greendao E/AndroidRuntime: FATAL EXCEPTION: main Process: tipiwiny.greendao, PID: 29389 android.database.sqlite.SQLiteException: table TAREAS has no column

named TIPO (code 1): , while compiling: INSERT INTO TAREAS ('_id','DURACION','TIPO','DESCRIPCION','USUARIO','REALIZADA') 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.(SQLiteProgram.java:58) at android.database.sqlite.SQLiteStatement.(SQLiteStatement.java:31) at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:994) at de.greenrobot.dao.internal.TableStatements.getInsertStatement(TableStatements.java:48) at de.greenrobot.dao.AbstractDao.insert(AbstractDao.java:293) at tipiwiny.greendao.CrearTarea.añadirTarea(CrearTarea.java:60) at tipiwiny.greendao.CrearTarea.access[=14=]0(CrearTarea.java:18) at tipiwiny.greendao.CrearTarea.onClick(CrearTarea.java:42) at android.view.View.performClick(View.java:4756) at android.view.View$PerformClick.run(View.java:19749) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5221) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) atcom.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

我的数据库是如何定义的：

 private static void createDatabase(Schema schema) {
    Entity usuario = schema.addEntity("Usuario");
    usuario.addIdProperty();
    usuario.addStringProperty("nombre").notNull();
    usuario.addStringProperty("apellidos").notNull();
    usuario.addStringProperty("password").notNull();
    usuario.addStringProperty("roll").notNull();

    Entity habilidad = schema.addEntity("Habilidad");
    habilidad.addIdProperty();
    Property usuarioIdProperty = habilidad.addLongProperty("usuarioId").notNull().getProperty();
    habilidad.addToOne(usuario, usuarioIdProperty);
    habilidad.addIntProperty("tipo").notNull();

    Entity tarea=schema.addEntity("Tareas");
    tarea.addIdProperty();

    tarea.addIntProperty("duracion").notNull();
    tarea.addIntProperty("tipo").notNull();
    tarea.addStringProperty("descripcion").notNull();
    tarea.addStringProperty("usuario");
    tarea.addBooleanProperty("realizada");


}

执行此代码生成tables时，会创建class TareasDao，方法createTable为：

  /** Creates the underlying database table. */
public static void createTable(SQLiteDatabase db, boolean ifNotExists) {
    String constraint = ifNotExists? "IF NOT EXISTS ": "";
    db.execSQL("CREATE TABLE " + constraint + "'TAREAS' (" + //
            "'_id' INTEGER PRIMARY KEY ," + // 0: id
            "'DURACION' INTEGER NOT NULL ," + // 1: duracion
            "'TIPO' INTEGER NOT NULL ," + // 2: tipo
            "'DESCRIPCION' TEXT NOT NULL ," + // 3: descripcion
            "'USUARIO' TEXT," + // 4: usuario
            "'REALIZADA' INTEGER);"); // 5: realizada
}

Answer 1

尝试卸载并重新安装该应用程序。

详情：

一个可能的原因可能是您首先创建了 table，运行迁移，然后添加了字段。

所以可能有两种可能的解决方案:-

1 : 从您的 phone 中删除该应用程序（卸载），它会删除所有 table。然后重新安装将重新创建所有 tables.

2 : 在 DaoMaster 中更改 onUpdate 方法以删除所有 table 并重新创建它们。

/** WARNING: Drops all table on Upgrade! Use only during development. */
public static class DevOpenHelper extends OpenHelper {
    public DevOpenHelper(Context context, String name, CursorFactory factory) {
        super(context, name, factory);
        Log.i("greenDAO", "DevOpenHelper: constructor called");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        Log.i("greenDAO", "Upgrading schema from version " + oldVersion + " to " + newVersion + " by dropping all tables");
        //Remember to remove this line before moving to production.
       dropAllTables(db,true); 
       onCreate(db);
    }
}

如果您需要任何帮助，请告诉我:)

GreenDao- android.database.sqlite.SQLiteException: table TAREAS 没有名为

GreenDao- android.database.sqlite.SQLiteException: table TAREAS has no column named

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