錯誤插入數據到數據庫

我嘗試將數據插入我的SQLite表，但我有一個麻煩插入錯誤插入數據到數據庫

我的錯誤日誌

02-12 10:55:47.927: V/aaaa(1273): zaza 
02-12 10:55:47.927: I/Database(1273): sqlite returned: error code = 1, msg = no such table: users 
02-12 10:55:47.957: E/Database(1273): Error inserting username=zaza 
02-12 10:55:47.957: E/Database(1273): android.database.sqlite.SQLiteException: no such table: users: , while compiling: INSERT INTO users(username) VALUES(?); 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:41) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1149) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1569) 
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1426) 
02-12 10:55:47.957: E/Database(1273): at com.example.database.DatabaseMain$1$1.onClick(DatabaseMain.java:63) 
02-12 10:55:47.957: E/Database(1273): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:159) 
02-12 10:55:47.957: E/Database(1273): at android.os.Handler.dispatchMessage(Handler.java:99) 
02-12 10:55:47.957: E/Database(1273): at android.os.Looper.loop(Looper.java:123) 
02-12 10:55:47.957: E/Database(1273): at android.app.ActivityThread.main(ActivityThread.java:3683) 
02-12 10:55:47.957: E/Database(1273): at java.lang.reflect.Method.invokeNative(Native Method) 
02-12 10:55:47.957: E/Database(1273): at java.lang.reflect.Method.invoke(Method.java:507) 
02-12 10:55:47.957: E/Database(1273): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 
02-12 10:55:47.957: E/Database(1273): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 
02-12 10:55:47.957: E/Database(1273): at dalvik.system.NativeStart.main(Native Method)

我我將使用自定義對話框，EditText上，我editttext我展示上log.v顯示

但爲什麼不能插入我的數據？

我的代碼

public class DatabaseMain extends Activity { 

    private DataBaseHelper dbHelper; 
    SQLiteDatabase db; 
    //private CursorAdapter dataSource; 

    //put the table name and column in constants 
    public static final String TABLE_NAME = "users"; 
    public static final String COLUMN_NAME = "username"; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_database_main); 
     dbHelper = new DataBaseHelper (this); 
     //dbHelper.openDataBase(); 
     db = dbHelper.getWritableDatabase(); 

     ListView listdata= (ListView)findViewById(R.id.listView1); 
     Button btn = (Button)findViewById(R.id.button1); 
     btn.setOnClickListener(new View.OnClickListener() { 

      ContentValues values = new ContentValues(); 
      public void onClick(View v) { 
       LayoutInflater inflater = DatabaseMain.this.getLayoutInflater(); 
       final View v1 =inflater.inflate(R.layout.username , null) ; 

       new AlertDialog.Builder(DatabaseMain.this) 
        .setTitle("input your name:") 
        .setView(v1) 
        .setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dlg, int sumthin) { 
          EditText name = (EditText)v1.findViewById(R.id.name); 


          String your_name = name.getText().toString(); 
          values.put(COLUMN_NAME,name); 

            db.insert(TABLE_NAME,null,values); 
         } 
        }) 
        .show(); 

      } 
     }); 
    } 


}

我使用數據庫中的文件，然後我把文件夾的資產，然後我跟這個代碼複製

public class DataBaseHelper extends SQLiteOpenHelper{ 

    private static String DB_PATH = "/data/data/com.example/databases/"; 

    private static String DB_NAME = "MyDb"; 

    private SQLiteDatabase myDataBase; 

    private final Context myContext; 

    private static DataBaseHelper sInstance = null; 


    public DataBaseHelper(Context context) { 

     super(context, DB_NAME, null, 1); 
     this.myContext = context; 
    } 

    public void createDataBase() throws IOException{ 

     boolean dbExist = checkDataBase(); 

     if(dbExist){ 
      //do nothing - database already exist 
     }else{ 

      this.getReadableDatabase(); 

      try { 

       copyDataBase(); 

      } catch (IOException e) { 

       throw new Error("Error copying database"); 

      } 
     } 

    } 

    private boolean checkDataBase(){ 

     SQLiteDatabase checkDB = null; 

     try{ 
      String myPath = DB_PATH + DB_NAME; 
      checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); 

     }catch(SQLiteException e){ 

      //database does't exist yet. 

     } 

     if(checkDB != null){ 

      checkDB.close(); 

     } 

     return checkDB != null ? true : false; 
    } 

    private void copyDataBase() throws IOException{ 

     //Open your local db as the input stream 
     InputStream myInput = myContext.getAssets().open(DB_NAME); 

     // Path to the just created empty db 
     String outFileName = DB_PATH + DB_NAME; 


     OutputStream myOutput = new FileOutputStream(outFileName); 


     byte[] buffer = new byte[1024]; 
     int length; 
     while ((length = myInput.read(buffer))>0){ 
      myOutput.write(buffer, 0, length); 
     } 

     //Close the streams 
     myOutput.flush(); 
     myOutput.close(); 
     myInput.close(); 

    } 

    public void openDataBase() throws SQLException{ 


     String myPath = DB_PATH + DB_NAME; 
     myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); 

    } 
    public Cursor select(String query) throws SQLException { 
     return myDataBase.rawQuery(query, null); 
    } 


    public void insert(String table, ContentValues values) throws SQLException { 
     myDataBase.insert(table, null, values); 
    } 


    public void delete(String table, String where) throws SQLException { 

     myDataBase.delete(table, where, null); 

    } 


    public void update(String table, ContentValues values, String where) { 

     myDataBase.update(table, values, where, null); 

    } 
    public void sqlCommand(String command) { 
     myDataBase.execSQL(command); 
    } 

    @Override 
    public synchronized void close() { 

      if(myDataBase != null) 
       myDataBase.close(); 

      super.close(); 

    } 

    @Override 
    public void onCreate(SQLiteDatabase db) { 

    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 

    } 

    public static DataBaseHelper instance() { 
     /* 
     if (sInstance == null) { 
      sInstance = new DataBaseHelper(); 
     } 
     */ 
     return sInstance; 
    } 

}

來源

2013-02-12 Ash

看起來像數據庫中不存在「用戶」表格。 – 2013-02-12 11:04:53

我正在使用數據庫文件，然後我把文件夾資產，然後我複製，在文件資源管理器中的數據/數據/ com.example.database是我的數據庫 – Ash 2013-02-12 11:20:23

如何看我的表到數據庫上的文件資源管理器data/data/com .example.database？ – Ash 2013-02-12 11:22:32

您需要創建表，插入前：

android.database.sqlite.SQLiteException: no such table: users: , while compiling: INSERT INTO users(username) VALUES(?);

喜歡的東西：

db.execSQL("CREATE TABLE users(username varchar);");

來源

2013-02-12 11:04:56 Nermeen

我正在使用數據庫文件，然後我把文件夾資產，然後我複製文件資源管理器中的數據/數據/ com.example.database是我的數據庫 – Ash 2013-02-12 11:18:11

如何查看我的表到數據庫文件資源管理器data/data/com .example.database？ – Ash 2013-02-12 11:23:26

它說表名用戶不在數據庫中，如果你已經在創建數據庫後爲用戶添加了創建表語句，如db.execSQL("CREATE TABLE STATEMENT FOR USERS Table");。我會建議你uninstall你的應用程序和reinstall它再次。它將在短期內創建新增加的表的數據庫。

來源

2013-02-12 11:06:53 AAnkit

我正在使用表中的文件，然後我把文件夾資產，然後我複製，在文件資源管理器中的數據/數據/ com.example.database是我的數據庫 – Ash 2013-02-12 11:17:23

如何看我的表到數據庫上的文件資源管理器data/data/com .example.database？ – Ash 2013-02-12 11:22:49

錯誤插入數據到數據庫

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