Question

我正在使用数据库，我有以下DataBaseHandling类：

public class DatabaseHandler extends SQLiteOpenHelper {

// All Static variables
// Database Version
private static final int DATABASE_VERSION = 4;

// Database Name
private static final String DATABASE_MEASURES = "measuresDataBase";

// Measures table name
private static final String TABLE_MEASURES = "measures";

// Measures Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_DATE = "date";
private static final String KEY_TIME_HOUR = "timeHour";
private static final String KEY_TIME_MINUTE = "timeMinute";
private static final String KEY_BE_INTAKE = "be_intake";
private static final String KEY_GLUCOSE = "glucose";
private static final String KEY_BOLUS = "bolus";
private static final String KEY_BASAL = "basal";

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

// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
    String CREATE_MEASURES_TABLE = "CREATE TABLE " + TABLE_MEASURES + "("
            + KEY_ID + " INTEGER PRIMARY KEY," + KEY_DATE + " TEXT,"
            + KEY_TIME_HOUR + " INTEGER NOT NULL," + KEY_TIME_MINUTE
            + " INTEGER NOT NULL," + KEY_BE_INTAKE + " REAL NOT NULL,"
            + KEY_GLUCOSE + " REAL NOT NULL," + KEY_BOLUS
            + " REAL NOT NULL," + KEY_BASAL + "REAL NOT NULL," + ")";

    db.execSQL(CREATE_MEASURES_TABLE);
}

// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // Drop older table if existed

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

    // Create tables again
    onCreate(db);
}

// Adding new contact
public void addMeasure(Measures m) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_DATE, m.getDate());
    values.put(KEY_TIME_HOUR, m.getTimeHour());
    values.put(KEY_TIME_MINUTE, m.getTimeMinute());
    values.put(KEY_BE_INTAKE, m.getBolus());
    values.put(KEY_GLUCOSE, m.getGlucose()); // Contact Name
    values.put(KEY_BOLUS, m.getBolus()); // Contact Phone Number
    values.put(KEY_BASAL, m.getBasal());

    // Inserting Row
    db.insert(TABLE_MEASURES, null, values);
    db.close(); // Closing database connection
}

public Measures getLastMeasure(String date) {
    SQLiteDatabase db = this.getReadableDatabase();

    Cursor cursor = db.query(TABLE_MEASURES, new String[] { KEY_ID,
            KEY_DATE, KEY_TIME_HOUR, KEY_TIME_MINUTE, KEY_BE_INTAKE,
            KEY_GLUCOSE, KEY_BOLUS, KEY_BASAL }, KEY_DATE + "=?",
            new String[] { date }, null, null,
            KEY_TIME_HOUR + " DESC, " + KEY_TIME_MINUTE + " DESC", "1");
    if (cursor != null)
        cursor.moveToFirst();

    Measures m = new Measures(Long.parseLong(cursor.getString(0)), // id
            cursor.getString(1), // date
            Integer.parseInt(cursor.getString(2)), // timeHour
            Integer.parseInt(cursor.getString(3)), // timeMinute
            Double.parseDouble(cursor.getString(4)), // BE intake
            Double.parseDouble(cursor.getString(5)), // glucose
            Double.parseDouble(cursor.getString(6)), // bolus
            Double.parseDouble(cursor.getString(7)) // basal

    );
    // return m
    return m;
}

// Getting All Measures
public List<Measures> getAllMeasures() {
    List<Measures> measureList = new ArrayList<Measures>();
    // Select All Query
    String selectQuery = "SELECT  * FROM " + TABLE_MEASURES;

    SQLiteDatabase db = this.getWritableDatabase();
    Cursor cursor = db.rawQuery(selectQuery, null);

    // looping through all rows and adding to list
    if (cursor.moveToFirst()) {
        do {
            Measures m = new Measures();
            m.setId(Long.parseLong(cursor.getString(0)));
            m.setDate(cursor.getString(1));
            m.setTimeHour(Integer.parseInt(cursor.getString(2)));
            m.setTimeMinute(Integer.parseInt(cursor.getString(3)));
            m.setBe_intake(Double.parseDouble(cursor.getString(4)));
            m.setGlucose(Double.parseDouble(cursor.getString(5)));
            m.setBolus(Double.parseDouble(cursor.getString(6)));
            m.setBasal(Double.parseDouble(cursor.getString(7)));
            // Adding measure to list
            measureList.add(m);
        } while (cursor.moveToNext());
    }

    // return contact list
    return measureList;
}

logcat显示：

android.database.sqlite.SQLiteException：没有这样的列：basal（代码1）:,同时编译：SELECT id，date，timeHour，timeMinute，be_intake，glucose，bolus，basal FROM mesaures WHERE date =？按时间顺序完成DESC限制1

我要感谢你的帮助

My Logcat（解决第一个问题后）

08-27 14：34：51.316：E / AndroidRuntime（772）：致命异常：主要 08-27 14：34：51.316：E / AndroidRuntime（772）：android.database.CursorIndexOutOfBoundsException：请求索引0，大小为0 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.database.AbstractCursor.checkPosition（AbstractCursor.java:418） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.database.AbstractWindowedCursor.checkPosition（AbstractWindowedCursor.java:136） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.database.AbstractWindowedCursor.getString（AbstractWindowedCursor.java:50） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.example.t1diabetes.DatabaseHandler.getLastMeasure（DatabaseHandler.java:92） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.example.t1diabetes.Mymeasures.calculateBasal（Mymeasures.java:263） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.example.t1diabetes.Mymeasures.access $ 1（Mymeasures.java:262） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.example.t1diabetes.Mymeasures $ 1.onClick（Mymeasures.java:99） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.view.View.performClick（View.java:4084） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.view.View $ PerformClick.run（View.java:16966） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.os.Handler.handleCallback（Handler.java:615） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.os.Handler.dispatchMessage（Handler.java:92） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.os.Looper.loop（Looper.java:137） 08-27 14：34：51.316：E / AndroidRuntime（772）：在android.app.ActivityThread.main（ActivityThread.java:4745） 08-27 14：34：51.316：E / AndroidRuntime（772）：at java.lang.reflect.Method.invokeNative（Native Method） 08-27 14：34：51.316：E / AndroidRuntime（772）：at java.lang.reflect.Method.invoke（Method.java:511） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:786） 08-27 14：34：51.316：E / AndroidRuntime（772）：at com.android.internal.os.ZygoteInit.main（ZygoteInit.java:553） 08-27 14：34：51.316：E / AndroidRuntime（772）：at dalvik.system.NativeStart.main（Native Method）

Answer 1

在KEY_BASAL列之后使用空格。由于您的表列名称不正确，因此创建的表没有此列。因此，在修改代码后重新安装数据库或更改版本。然后您将获得带有列的正确表

String CREATE_MEASURES_TABLE = "CREATE TABLE " + TABLE_MEASURES + "("
            + KEY_ID + " INTEGER PRIMARY KEY," + KEY_DATE + " TEXT,"
            + KEY_TIME_HOUR + " INTEGER NOT NULL," + KEY_TIME_MINUTE
            + " INTEGER NOT NULL," + KEY_BE_INTAKE + " REAL NOT NULL,"
            + KEY_GLUCOSE + " REAL NOT NULL," + KEY_BOLUS
            + " REAL NOT NULL," + KEY_BASAL + " REAL NOT NULL" + ")";


if (cursor != null && cursor .getCount()>0){

        cursor.moveToFirst();

///

}

Answer 2

有一个问题是你错过了Key_basal的空格，并在onCreate方法的末尾添加了一个额外的逗号。你的代码：

// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_MEASURES_TABLE = "CREATE TABLE " + TABLE_MEASURES + "("
        + KEY_ID + " INTEGER PRIMARY KEY," + KEY_DATE + " TEXT,"
        + KEY_TIME_HOUR + " INTEGER NOT NULL," + KEY_TIME_MINUTE
        + " INTEGER NOT NULL," + KEY_BE_INTAKE + " REAL NOT NULL,"
        + KEY_GLUCOSE + " REAL NOT NULL," + KEY_BOLUS
        + " REAL NOT NULL," + KEY_BASAL + "REAL NOT NULL," + ")";

db.execSQL(CREATE_MEASURES_TABLE);
}

应该是：

// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_MEASURES_TABLE = "CREATE TABLE " + TABLE_MEASURES + "("
        + KEY_ID + " INTEGER PRIMARY KEY," + KEY_DATE + " TEXT,"
        + KEY_TIME_HOUR + " INTEGER NOT NULL," + KEY_TIME_MINUTE
        + " INTEGER NOT NULL," + KEY_BE_INTAKE + " REAL NOT NULL,"
        + KEY_GLUCOSE + " REAL NOT NULL," + KEY_BOLUS
        + " REAL NOT NULL," + KEY_BASAL + " REAL NOT NULL" + ")";

db.execSQL(CREATE_MEASURES_TABLE);
}

Answer 3

自动增量KEY_ID或将一些数据放到KEY_ID并将完整的日志猫放在此处：

String CREATE_MEASURES_TABLE = "CREATE TABLE " + TABLE_MEASURES + "("
        + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_DATE + " TEXT,"
        + KEY_TIME_HOUR + " INTEGER NOT NULL," + KEY_TIME_MINUTE
        + " INTEGER NOT NULL," + KEY_BE_INTAKE + " REAL NOT NULL,"
        + KEY_GLUCOSE + " REAL NOT NULL," + KEY_BOLUS
        + " REAL NOT NULL," + KEY_BASAL + " REAL NOT NULL" + ")";

Answer 4

删除,结束查询

KEY_BASAL + "REAL NOT NULL," + ")";
                          ^
                          | Here

并为Concat Strings使用空间

KEY_BASAL + "REAL NOT NULL," + ")";
             ^
             | Here

好运

Answer 5

使用junit测试时出现此错误。而我的错误很简单但很邪恶。

我混合了getContext()和getMockConetext()。

SQLiteException：没有这样的列：basal（代码1）

5 个答案: