Java Android SQL数据库错误（代码1）

我正试图显示数据库中的数据，如果单击“下一步”按钮，数据会一个接一个地发生变化。我只是想检查程序是否可以从数据库中选择第一个数据，但我收到了错误消息

Caused by: android.database.sqlite.SQLiteException: no such column: color (code 1): , while compiling: SELECT DISTINCT _id, brand, model, price, color, img FROM car WHERE _id=1

DBAdapter.java

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

/**
 * Created by Asus on 24.04.2015.
 */
public class DBAdapter {private DatabaseHelper DBHelper;
    private SQLiteDatabase db;
    private final Context context;

    public static final String KEY_ROWID = "_id";
    public static final String KEY_BRAND = "brand";
    public static final String KEY_MODEL = "model";
    public static final String KEY_PRICE = "price";
    public static final String KEY_COLOR = "color";
    public static final String KEY_PHOTO = "img";


    private static final String TAG = "DBAdapter";

    private static final String DATABASE_NAME = "testDB";
    private static final String DATABASE_TABLE = "car";
    private static final int DATABASE_VERSION = 1;

    private static final String DATABASE_CREATE = "create table car (_id integer primary key autoincrement, "
            + "brand text, model text, price integer"
            + "color text, img blob);";

    // Constructor
    public DBAdapter(Context context) {
        this.context = context;
        DBHelper = new DatabaseHelper(context);
    }

    // To create and upgrade a database in an Android application SQLiteOpenHelper subclass is usually created
    private static class DatabaseHelper extends SQLiteOpenHelper {
        DatabaseHelper(Context context) {
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            // onCreate() is only called by the framework, if the database does not exist
            Log.d("Create", "Creating the database");

            try {
                db.execSQL(DATABASE_CREATE);
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            // onUpgrade() is only called by the framework, if one changes the database version number

            // Sends a Warn log message
            Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
                    + newVersion + ", which will destroy all old data");

            // Method to execute an SQL statement directly
            db.execSQL("DROP TABLE IF EXISTS contacts");
            onCreate(db);
        }
    }

    // Opens the database
    public DBAdapter open() throws SQLException {
        // Create and/or open a database that will be used for reading and writing
        //db = DBHelper.getWritableDatabase();

        // Use if you only want to read data from the database
        db = DBHelper.getReadableDatabase();
        return this;
    }

    // Closes the database
    public void close() {
        // Closes the database
        DBHelper.close();
    }

    // Insert a contact into the database
    public long insertContact(int rowid, String brand, String model, int price, String color, byte [] photo) {
        // The class ContentValues allows to define key/values. The "key" represents the
        // table column identifier and the "value" represents the content for the table
        // record in this column. ContentValues can be used for inserts and updates of database entries.
        ContentValues initialValues = new ContentValues();
        initialValues.put(KEY_ROWID, rowid);
        initialValues.put(KEY_BRAND, brand);
        initialValues.put(KEY_MODEL, model);
        initialValues.put(KEY_PRICE, price);
        initialValues.put(KEY_COLOR, color);
        initialValues.put(KEY_PHOTO, photo);
        return db.insert(DATABASE_TABLE, null, initialValues);
    }

    // Retrieves a particular contact
    public Cursor getContact(int id) throws SQLException {
        // rawQuery() directly accepts an SQL select statement as input.
        // query() provides a structured interface for specifying the SQL query.

        // A query returns a Cursor object. A Cursor represents the result of a query
        // and basically points to one row of the query result. This way Android can buffer
        // the query results efficiently; as it does not have to load all data into memory

        Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] {
                KEY_ROWID,KEY_BRAND, KEY_MODEL, KEY_PRICE, KEY_COLOR, KEY_PHOTO}, KEY_ROWID + "=" + id, null, null, null, null, null);

        if (mCursor != null) {
            mCursor.moveToFirst();
        }
        return mCursor;
    }
}

DisplayActivity.java

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
import android.widget.Toast;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;


public class DisplayActivity extends Activity {
    private String []  car_images;
    private TextView carid;
    private TextView brand;
    private TextView model;
    private TextView price;
    private TextView color;
    private ImageView photo;
    private DBAdapter db;
    private Bitmap mBitmap;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.display);

        car_images = getResources().getStringArray(R.array.car_images);

        carid = (TextView) findViewById(R.id.caridDB);
        brand = (TextView) findViewById(R.id.brandDB);
        model = (TextView) findViewById(R.id.modelDB);
        price = (TextView) findViewById(R.id.priceDB);
        color = (TextView) findViewById(R.id.colorDB);
        photo = (ImageView) findViewById(R.id.photoDB);

        // Database will be created using the DBAdapter
        db = new DBAdapter(this);

        // Add a contact
        // A Bitmap must be converted to a byte array so that it can be stored in a blob
        mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.mito);
        // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

        ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
        mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
        byte[] image = mByteArrayOutputStream.toByteArray();

        db.open();
         long id = db.insertContact(1, "Alfa Romeo", "Mito", 2900, "Red",image);
        // long id = db.insertContact("Larry", "page", 3000000, image);
        // long id = db.insertContact("Steve", "Ballmer", 5000000, image);


        Cursor c = db.getContact(1);
        if (c.moveToFirst())
            DisplayContact(c);
        else
            Toast.makeText(this, "No record found", Toast.LENGTH_LONG)
                    .show();

        db.close();




    }

    public void onClick(View view) {


            // Get a contact
            db.open();
            Cursor c = db.getContact(Integer.parseInt(carid.getText().toString()));
            if (c.moveToFirst())
                DisplayContact(c);
            else
                Toast.makeText(this, "No record found", Toast.LENGTH_LONG)
                        .show();
            db.close();


    }

    public void DisplayContact(Cursor c) {
        carid.setText(c.getString(0));
        brand.setText(c.getString(1));
        model.setText(c.getString(2));
        price.setText(c.getString(3));
        color.setText(c.getString(4));


        if (Integer.parseInt(c.getString(0))==0){
        // Add a contact
        // A Bitmap must be converted to a byte array so that it can be stored in a blob
        mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.mito);
        // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

        ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
        mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
        byte[] image = mByteArrayOutputStream.toByteArray();
        image = c.getBlob(5);
        Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
        photo.setImageBitmap(mBitmap); }
        else if (Integer.parseInt(c.getString(0))==1){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.giulettaa);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==2){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.alfa4c);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==3){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.gran);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==4){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.coupe);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==5){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.c3);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==6){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.c4);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==7){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.gla);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==8){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.smart);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else if (Integer.parseInt(c.getString(0))==9){
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.node);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
        else {
            // Add a contact
            // A Bitmap must be converted to a byte array so that it can be stored in a blob
            mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.juke);
            // mBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.google);

            ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
            mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, mByteArrayOutputStream);
            byte[] image = mByteArrayOutputStream.toByteArray();
            image = c.getBlob(5);
            Bitmap mBitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
            photo.setImageBitmap(mBitmap);
        }
    }
}

你的问题就在这里

private static final String DATABASE_CREATE = "create table car (_id integer primary key autoincrement, "
        + "brand text, model text, price integer" // <-- NO COMMA after 'integer'!
        + "color text, img blob);";

private static final String DATABASE\u CREATE=“CREATE table car（\u id integer primary key autoincrement，”
+“brand text、model text、price integer”//I在使用数据库时，我总是觉得完全卸载并在测试设备或模拟器上重新安装调试应用程序很有帮助。如果您对助手类进行了更改，例如添加列，并且不通过
onUpgrade（）对此进行说明
或者通过取消安装/重新安装应用程序，您将得到一个类似于您发布的错误。@pArtisan是的，我已经尝试过了，但仍然得到相同的错误。Cursor mCursor=db.query（true，DATABASE_TABLE，new String[]{KEY_ROWID，KEY_BRAND，KEY_MODEL，KEY_PRICE，KEY_COLOR，KEY_PHOTO}，KEY_ROWID+“=”+id，null，null，null，null，null）；程序在这里指出了错误，非常感谢！！@pathfinderelite
private static final String DATABASE_CREATE = "create table car (_id integer primary key autoincrement, "
        + "brand text, model text, price integer," // <-- COMMA
        + "color text, img blob);";