找不到sqlite表成员

时间：2013-09-30 05:10:03

标签： android sqlite

我在以下sqlite数据库代码中收到错误任何人都可以纠正我的错误吗？以下是访问问题的LOGCAT。

在另一个说明中我希望我的用户注册官方电子邮件ID而不是google yahoo或hotmail，我如何限制使用免费电子邮件？

DBHelper 

public class DBHelper extends SQLiteOpenHelper {

    private static final String DATABASE_NAME = "membersdb";
    private static final String DATABASE_TABLE = "members"; // this is your
                                                            // table name
    private static final String KEY_ROW_ID = "_id";
    private static final String KEY_USERNAME = "username";
    private static final String KEY_PASSWORD = "password";
    private static final String KEY_FULLNAME = "fullname";
    private static final String KEY_EMAILS = "emails";

    private static final int DATABASE_VERSION = 1;

    private static final String DATABASE_CREATE = "CREATE TABLE "
            + DATABASE_TABLE + " (" + KEY_ROW_ID
            + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_USERNAME
            + " TEXT NOT NULL , " + KEY_EMAILS + " TEXT NOT NULL , "
            + KEY_PASSWORD + " TEXT NOT NULL , " + KEY_FULLNAME
            + " TEXT NOT NULL);";

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

    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(DATABASE_CREATE);

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int arg1, int arg2) {
        db.execSQL("DROP TABLE IF EXISTS members");
        onCreate(db);

    }

}

将对DBAdapter 

public class DBAdapter {
    private static final String DATABASE_TABLE = "members";
    public static final String KEY_ROW_ID = "_id";
    public static final String KEY_USERNAME = "username";
    public static final String KEY_PASSWORD = "password";
    public static final String KEY_FULLNAME = "fullname";
    public static final String KEY_EMAILS = "emails";

    SQLiteDatabase mDb;
    Context mCtx;
    DBHelper mDbHelper;

    public DBAdapter(Context context) {
        this.mCtx = context;
    }

    public DBAdapter open() throws SQLException {
        mDbHelper = new DBHelper(mCtx);
        mDb = mDbHelper.getWritableDatabase();
        return this;
    }

    public void close() {
        mDbHelper.close();
    }

    public long register(String username, String password, String fullnames, String emails) {
        ContentValues initialValues = new ContentValues();
        initialValues.put(KEY_USERNAME, username);
        initialValues.put(KEY_PASSWORD, password);
        initialValues.put(KEY_FULLNAME, fullnames);
        initialValues.put(KEY_EMAILS, emails);

        return mDb.insert(DATABASE_TABLE, null, initialValues);
    }

    public boolean Login(String username, String password) throws SQLException {
        Cursor mCursor = mDb.rawQuery("SELECT * FROM " + DATABASE_TABLE
                + " WHERE username=? AND password=?", new String[] { username,
                password });
        if (mCursor != null) {
            if (mCursor.getCount() > 0) {
                return true;
            }
        }
        return false;
    }
}

会员注册活动 

public class MembersRegister extends Activity {
    DBAdapter dbAdapter;
    EditText txtUserName, fullname, authcodes, txtemail;
    EditText txtPassword;
    Button btnLogin;
    Button btnRegister;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.register);

        authcodes = (EditText) findViewById(R.id.auth_code);
        fullname = (EditText) findViewById(R.id.registerName);
        txtUserName = (EditText) findViewById(R.id.userName);
        txtPassword = (EditText) findViewById(R.id.registerPassword);
        txtemail = (EditText) findViewById(R.id.registerEmail);
        btnRegister = (Button) findViewById(R.id.btnRegister);
        dbAdapter = new DBAdapter(this);
        dbAdapter.open();

        btnRegister.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                imm.hideSoftInputFromWindow(txtUserName.getWindowToken(), 0);
                imm.hideSoftInputFromWindow(txtPassword.getWindowToken(), 0);
                imm.hideSoftInputFromWindow(fullname.getWindowToken(), 0);
                imm.hideSoftInputFromWindow(txtemail.getWindowToken(), 0);
                try {

                    String username = txtUserName.getText().toString();
                    String password = txtPassword.getText().toString();
                    String fullnames = fullname.getText().toString();
                    String emails = txtemail.getText().toString();
                    long i = dbAdapter.register(username, password, fullnames,
                            emails);
                    if (i != -1)
                        Toast.makeText(MembersRegister.this,
                                "You have successfully registered",
                                Toast.LENGTH_LONG).show();

                } catch (SQLException e) {
                    Toast.makeText(MembersRegister.this, "Some problem occurred",
                            Toast.LENGTH_LONG).show();

                }

            }
        });
    }
}

logcat的

09-30 10:34:00.807: E/Database(368): Error inserting username=hello emails=hello password=hello fullname=hello
09-30 10:34:00.807: E/Database(368): android.database.sqlite.SQLiteException: table members has no column named emails: , while compiling: INSERT INTO members(username, emails, password, fullname) VALUES(?, ?, ?, ?);
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:41)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1149)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1569)
09-30 10:34:00.807: E/Database(368):    at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1426)
09-30 10:34:00.807: E/Database(368):    at com.ideals.ideal.DBAdapter.register(DBAdapter.java:42)
09-30 10:34:00.807: E/Database(368):    at com.ideals.ideal.MembersRegister$1.onClick(MembersRegister.java:50)
09-30 10:34:00.807: E/Database(368):    at android.view.View.performClick(View.java:2485)
09-30 10:34:00.807: E/Database(368):    at android.view.View$PerformClick.run(View.java:9080)
09-30 10:34:00.807: E/Database(368):    at android.os.Handler.handleCallback(Handler.java:587)
09-30 10:34:00.807: E/Database(368):    at android.os.Handler.dispatchMessage(Handler.java:92)
09-30 10:34:00.807: E/Database(368):    at android.os.Looper.loop(Looper.java:123)
09-30 10:34:00.807: E/Database(368):    at android.app.ActivityThread.main(ActivityThread.java:3683)
09-30 10:34:00.807: E/Database(368):    at java.lang.reflect.Method.invokeNative(Native Method)
09-30 10:34:00.807: E/Database(368):    at java.lang.reflect.Method.invoke(Method.java:507)
09-30 10:34:00.807: E/Database(368):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
09-30 10:34:00.807: E/Database(368):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
09-30 10:34:00.807: E/Database(368):    at dalvik.system.NativeStart.main(Native Method)

提前致谢

5 个答案:

答案 0 :(得分：0)

您的create SQL以CREATE TABLE IF NOT EXISTS开头。所以我的想法是你在设备已经拥有该表时添加了电子邮件列。如果是这种情况，那么只需重新安装应用程序 - 它将删除数据库，因此您可以确保将使用该列创建表。

答案 1 :(得分：0)

删除并创建“成员”表。也许你的商店里有旧版本。

答案 2 :(得分：0)

您需要卸载您的应用程序再次安装它。 onCreate方法仅称为一个方法。要触发onUpgrade，您需要增加数据库编号。

此外，您可能不希望删除onUpgrade中的表格，因为用户将丢失所有数据。

答案 3 :(得分：0)

从模拟器中卸载应用程序并再次运行。

答案 4 :(得分：0)

可能是您应该更改数据库名称

来自这个

 private static final String DATABASE_NAME = "membersdb";

到

private static final String DATABASE_NAME = "members.db";
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