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已創建數據庫但未創建數據庫表

2014-01-21 57 views
0

我有這套編碼用於將我輸入的數據插入到數據庫中。 但是，當我導出數據庫時，我沒有看到任何表格已創建數據庫但未創建數據庫表

我想知道我是否正確地完成了它。 也沒有顯示任何錯誤。

logcat的

01-21 07:55:25.567: E/SQLiteLog(772): (1) no such table: fuelLog 
01-21 07:55:25.648: E/SQLiteDatabase(772): Error inserting tcost= 24 fuelprice=12 fcon= 61 odometer=123 date=12/12/12 fuelpump=2 
01-21 07:55:25.648: E/SQLiteDatabase(772): android.database.sqlite.SQLiteException: no such table: fuelLog (code 1): , while compiling: INSERT INTO fuelLog(tcost,fuelprice,fcon,odometer,date,fuelpump) VALUES (?,?,?,?,?,?) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at com.example.fuellog.DBAdapter.insertLog(DBAdapter.java:88) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at com.example.fuellog.MainActivity$4.onClick(MainActivity.java:156) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.view.View.performClick(View.java:4204) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.view.View$PerformClick.run(View.java:17355) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.os.Handler.handleCallback(Handler.java:725) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.os.Handler.dispatchMessage(Handler.java:92) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.os.Looper.loop(Looper.java:137) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at android.app.ActivityThread.main(ActivityThread.java:5041) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at java.lang.reflect.Method.invokeNative(Native Method) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at java.lang.reflect.Method.invoke(Method.java:511) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
01-21 07:55:25.648: E/SQLiteDatabase(772): at dalvik.system.NativeStart.main(Native Method)

這是我的編碼

public class DBAdapter { 

    public static final String KEY_ROWID = "_id"; 
    public static final String KEY_DATE = "date"; 
    public static final String KEY_PRICE = "fuelprice"; 
    public static final String KEY_FUEL = "fuelpump"; 
    public static final String KEY_COST = "tcost"; 
    public static final String KEY_ODM = "odometer"; 
    public static final String KEY_CON = "fcon"; 

    private static final String TAG = "DBADAPTER"; 

    static final String DATABASE_NAME = "fuelLogDB"; 
    static final int DATABASE_VERSION = 1; 
    static final String DATABASE_TABLE = "fuelLog"; 

    private static final String DATABASE_CREATE = 
      "create table fuelLog (_id integer primary key auto increment, " + 
      "date text not null, fuelprice text not null, fuelpump text not null, tcost text not null, odometer text not null, fcon text not null);"; 

    private final Context context;  

     private DatabaseHelper DBHelper; 
     private 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); 
      } 

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

      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 fuelLog"); 
       onCreate(db); 

     } 
    } 

     public DBAdapter open() throws SQLException 
     { 
      db = DBHelper.getWritableDatabase(); 
      return this; 
     } 
     //close database 

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

     public long insertLog (String date, String fuelprice, String fuelpump, String tcost , String odometer,String fcon) 

     { 
      ContentValues initialValues = new ContentValues(); 
      initialValues.put(KEY_DATE, date); 
      initialValues.put(KEY_PRICE, fuelprice); 
      initialValues.put(KEY_FUEL, fuelpump); 
      initialValues.put(KEY_COST, tcost); 
      initialValues.put(KEY_ODM, odometer); 
      initialValues.put(KEY_CON, fcon); 
     return db.insert(DATABASE_TABLE, null, initialValues); 

     } 
}//DBAdapter

mainactivity.java

public class MainActivity extends Activity { 

    Button saveButton = null; 
    EditText dateEdit; 
    EditText priceEdit; 
    EditText pumpEdit; 
    TextView costView; 
    EditText odometerEdit; 
    TextView fconView; 
    TextWatcher textWatcher; 
    String priceEditStr ="",pumpEditStr=""; 
    String odmEditStr = ""; 
int result; 
int resultCon; 



     public boolean isNumeric(String str) 
     { 
      return str.matches("-?\\d+(\\.\\d+)?"); 
     } 

     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 

      setContentView(R.layout.activity_main); 
      costView = (TextView)findViewById(R.id.tcost); 
      dateEdit = (EditText)findViewById(R.id.date); 
      priceEdit = (EditText)findViewById(R.id.fuelprice); 
      pumpEdit = (EditText)findViewById(R.id.fuelpump); 
      odometerEdit = (EditText)findViewById(R.id.odometer); 
      fconView = (TextView)findViewById(R.id.fcon); 


       priceEdit.addTextChangedListener(new TextWatcher() { 

        @Override 
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void afterTextChanged(Editable editable) { 
         //here, after we introduced something in the EditText we get the string from it 
         if(!priceEdit.getText().toString().trim().equalsIgnoreCase("") && !priceEdit.getText().toString().trim().equalsIgnoreCase(null)) 
          priceEditStr = priceEdit.getText().toString().trim(); 
         if(!pumpEdit.getText().toString().trim().equalsIgnoreCase("") && !pumpEdit.getText().toString().trim().equalsIgnoreCase(null)) 
          pumpEditStr = pumpEdit.getText().toString().trim(); 

         if(!priceEdit.getText().toString().trim().equalsIgnoreCase("") && !pumpEdit.getText().toString().trim().equalsIgnoreCase("")) 
         { 
         result = Integer.parseInt(priceEditStr) * Integer.parseInt(pumpEditStr);    
         costView.setText(" "+result); 
         } 

        } 
       }); 

       pumpEdit.addTextChangedListener(new TextWatcher() { 

        @Override 
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void afterTextChanged(Editable editable) { 
         //here, after we introduced something in the EditText we get the string from it 
         if(!priceEdit.getText().toString().trim().equalsIgnoreCase("")) 
          priceEditStr = priceEdit.getText().toString().trim(); 
         if(!pumpEdit.getText().toString().trim().equalsIgnoreCase("")) 
          pumpEditStr = pumpEdit.getText().toString().trim(); 


         if(!priceEdit.getText().toString().trim().equalsIgnoreCase("") && !pumpEdit.getText().toString().trim().equalsIgnoreCase("")) 
          { 
          result = Integer.parseInt(priceEditStr) * Integer.parseInt(pumpEditStr);    
          costView.setText(" "+result); 
          } 

        } 
       }); 





       odometerEdit.addTextChangedListener(new TextWatcher() { 
        @Override 
        public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { 

        } 

        @Override 
        public void afterTextChanged(Editable editable) { 
         //here, after we introduced something in the EditText we get the string from it 

         if(!odometerEdit.getText().toString().trim().equalsIgnoreCase("")) 
          odmEditStr = odometerEdit.getText().toString().trim(); 


         if(!odometerEdit.getText().toString().trim().equalsIgnoreCase("") && !pumpEdit.getText().toString().trim().equalsIgnoreCase("")) 
         { 
          resultCon = Integer.parseInt(odmEditStr)/Integer.parseInt(pumpEditStr);    
          fconView.setText(" "+resultCon); 
         } 

        } 
       }); 


      saveButton = (Button) findViewById(R.id.saveBTN); 
      saveButton.setOnClickListener(new OnClickListener() 
      { 
       public void onClick(View v) 
       { 
        DBAdapter dbAdaptor = new DBAdapter(getApplicationContext()); 
        try 
        { 
         dbAdaptor.open(); 
         String date = dateEdit.getText().toString(); 
         String price = priceEdit.getText().toString(); 
         String pump = pumpEdit.getText().toString(); 
         String cost = costView.getText().toString(); 
         String odometer = odometerEdit.getText().toString(); 
         String fcon = fconView.getText().toString(); 
         dbAdaptor.insertLog(date, price, pump, cost, odometer, fcon); 

        } 
        catch(Exception e){ 
         Log.d("Fuel Log", e.getMessage()); 
        } 
        finally 
        { 
         if(dbAdaptor != null) 
          dbAdaptor.close(); 
        } 
       } 
      }); 

     }//oncreate 


    }//main

來源

2014-01-21 Chloe

+0

你如何確定表格未被創建？你有沒有看過使用任何工具？ –

+0

你說表沒有創建，甚至還說'當我導出數據庫時，我沒有看到它的記錄。'如果沒有創建它，你怎麼看到表是空的？ –

+0

好像不好的代碼風格，沒有正確的插入到db中。 –

回答

1

在你DATABASE_CREATE字符串，它應該是「自動增量」，即沒有任何空間或在其下劃線。

而且，無論是重新運行前徹底卸載你的應用程序或更改你的數據庫版本，以2：

static final int DATABASE_VERSION = 2;

因爲你的代碼已經經歷過的onCreate（）在SQLiteOpenHelper（你發現任何異常，可能發生在該方法中），我懷疑它沒有運行。這樣做應該強制它再次這樣做。最後，刪除助手的onCreate（）中的try/catch。任何創建表的失敗都會導致您的應用程序崩潰，從而導致您需要在logcat中看到錯誤。

來源

2014-01-21 08:05:14 NigelK

0

哪個數據庫源碼的指向？ 如果你在一個測試設備上運行這個代碼，那麼我認爲你不能用sqlite原樣查看那個數據庫，因爲它只會在你的應用程序只能訪問的私有區域中創建。

你確定你沒有指向錯誤的數據庫嗎？

來源

2014-01-21 07:15:00 Arnab

+0

嗨，我正在使用模擬器.. &&也有一個logcat錯誤 – Chloe

0

改變你創建DATEBASE查詢

create table fuelLog (_id integer primary key auto_increment,date text not null, fuelprice text not null, fuelpump text not null, tcost text not null, odometer text not null, fcon text not null);

來源

2014-01-21 07:22:41 Burusothman

+0

同樣的錯誤仍然 – Chloe

+0

你檢查你的查詢....是否正在工作 – Burusothman

+0

錯誤是一樣的以前，因爲我已經張貼上面。它能夠獲取數據，但無法插入。沒有這樣的表格。 – Chloe

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