2015-02-07 11 views
-1

當我的應用程序正在創建數據庫時,它似乎沒有創建'cardname'列。我一直在查看我的代碼,但無法找到我做錯了什麼。任何人都可以幫助我嗎?Android Studio SQLite錯誤:「沒有這樣的列..」

將對DBAdapter類

public class DBAdapter { 
static final String KEY_ROWID = "_id"; 
static final String KEY_USERNAME = "name"; 
static final String KEY_PASSWORD = "password"; 
static final String KEY_CARDNUM = "cardnum"; 
static final String KEY_CARDNAME = "cardname"; 
static final String TAG = "DBAdapter"; 

static final String DATABASE_NAME = "CPDB"; 
static final String DATABASE_TABLE = "Users"; 
static final int DATABASE_VERSION = 1; 

static final String DATABASE_CREATE = 
     "create table Users (_id integer primary key autoincrement, " 
       + "name text not null," 
        +"password text not null," 
        +"cardnum text not null," 
        + "cardname text not null" 
         + ");"; 


final Context context; 

DatabaseHelper DBHelper; 
SQLiteDatabase db; 

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

private static class DatabaseHelper extends SQLiteOpenHelper 
{ 
    DatabaseHelper(Context context){ 
     super (context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db){ 
     try{ 
      db.execSQL(DATABASE_CREATE); 
     } catch (SQLException e) { 
      e.printStackTrace(); 
     } 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     Log.w(TAG, "Upgrading database from version" + oldVersion + "to" + newVersion + "which will destroy all old data"); 
     db.execSQL("DROP TABLE IF EXISTS Users"); 
     onCreate (db); 

    } 
} 

的將對DBAdapter類

//--retrieves cards for the user-- 
public Cursor getCards(String username) throws SQLException{ 
    Cursor mCursor = 
      db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID, KEY_USERNAME, KEY_CARDNAME}, KEY_USERNAME + "= '" + username + "'", null, null, null, null,null); 
    if (mCursor != null) { 
     mCursor.moveToFirst(); 
    } 
    return mCursor; 
} 

主要活動等級(當錯誤發生時)內的查詢..

if (view.getId() == R.id.bttn_show) 
    { 
     EditText username = (EditText) findViewById(R.id.tf_username); 
     String tesco = "tesco"; 

     DBAdapter db= new DBAdapter(this); 

    db.open(); 
    Cursor c = db.getCards(username.getText().toString()); 

    ArrayList<String> usersCards = new ArrayList<>(); 

    if(c.moveToFirst()) { 
     do { 
      String aCard = c.getString(c.getColumnIndex("cardname")); 
      usersCards.add(aCard); 

     } while (c.moveToNext()); 

    } 
    if (usersCards.contains(tesco)) { 
     ImageButton tb1 = (ImageButton) findViewById(R.id.ib_1); 

     tb1.setBackgroundResource(R.drawable.tesco); 

    } 
    else { 
     Toast.makeText(this, "Please Add a Card", Toast.LENGTH_LONG).show(); 
    } 
} 

logcat的錯誤日誌

 --------- beginning of crash 
02-07 13:13:08.100 2109-2109/com.cardpocket.cardpocket E/AndroidRuntime﹕ FATAL EXCEPTION: main 
Process: com.cardpocket.cardpocket, PID: 2109 
java.lang.IllegalStateException: Could not execute method of the activity 
     at android.view.View$1.onClick(View.java:4007) 
     at android.view.View.performClick(View.java:4756) 
     at android.view.View$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) 
     at   com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 
    Caused by: java.lang.reflect.InvocationTargetException 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 
     at android.view.View$1.onClick(View.java:4002) 
  



 at android.view.View.performClick(View.java:4756) 
            at android.view.View$PerformClick.run(View.java:19749) 
            at android.os.Handler.handleCallback(Handler.java:739) 
            at android.os.Handler.dispatchMessage(Handler.java:95) 
            at android.os.Looper.loop(Looper.java:135) 
            at android.app.ActivityThread.main(ActivityThread.java:5221) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:372) 
            at  com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 
Caused by: android.database.sqlite.SQLiteException: no such column:  cardname (code 1): , while compiling: SELECT DISTINCT _id, name, cardname FROM Users WHERE name= 'cliff' 
     at  android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
     at  android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnecti on.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.<init> (SQLiteProgram.java:58) 
     at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37) 
     at  android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver. java:44) 
     at  android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1316) 
     at  android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1163) 
     at  android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1034) 
     at com.cardpocket.cardpocket.DBAdapter.getCards(DBAdapter.java:148) 
     at  com.cardpocket.cardpocket.mainactivity.onClick(mainactivity.java:78) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at java.lang.reflect.Method.invoke(Method.java:372) 
            at android.view.View$1.onClick(View.java:4002) 
            at android.view.View.performClick(View.java:4756) 
            at android.view.View$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) 
            at  com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 

預先感謝您。

+0

請寄更多代碼?更新數據庫版本11 – 2015-02-07 13:06:53

+0

你在'KEY_CARDNAME'中使用了正確的列名嗎? – ved 2015-02-07 13:33:26

+0

你是什麼意思ved? – Ash30 2015-02-07 13:38:17

回答

0

看起來你正在試圖獲取不是在你的DBAdapter類中創建的cardesc列。你能發佈更多的logcat日誌嗎?

+0

我很抱歉,那是來自舊日誌。我已經更新了所有的代碼。我再次道歉。 – Ash30 2015-02-07 13:21:12

+0

不確定。嘗試增加你的數據庫版本2. – 2015-02-07 13:44:20

+0

工作! :)謝謝 – Ash30 2015-02-07 14:27:41

0

表中是否有名爲「tesco」的記錄?

嘗試在將tesco插入表格後搜索tesco。

+0

不,它不能將它添加到表中,因爲它認爲列'cardname'不存在。 – Ash30 2015-02-07 13:39:23

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