我想從textview中添加數據到sqlite數據庫

Question

因爲我是Android開發新手。請告訴我如何將數據從textview添加到數據庫。我已經創建了一個數據庫處理程序類。但無法知道要在我的主要活動中寫些什麼來保存sqlite中的數據。 這是我DBhelper類：

public class DBHandler extends SQLiteOpenHelper 
{ 
    public DBHandler(Context context, String name, CursorFactory factory, 
      int version) { 
     super(context, name, factory, version); 
     // TODO Auto-generated constructor stub 
    } 
    private static final String DB_NAME = "SchedulerDB"; 
    private static final int VERSION = 1; 

    public static final String TABLE_PERSON = "Person"; 
    private static final String COLUMN_NAME_PERSONNAME = "Name"; 
    private static final String COLUMN_NAME_DATE = "Date"; 
    private static final String COLUMN_NAME_TIME = "Time"; 


    private static final String TABLE_APPOINTMENT_CHECKED = "AppointmentChecked"; 
    private static final String COLUMN_NAME_DATE_LAST_CHECKED = "LastChecked"; 
private SQLiteDatabase myDB; 

    public DBHandler(Context context) 
    { 
     super(context, DB_NAME, null, VERSION); 
     myDB = getWritableDatabase(); 
    } // End of constructor 


    @Override 
    public void onCreate(SQLiteDatabase db) 
    { 
     String createPerson = "CREATE TABLE " + TABLE_PERSON + "(" + COLUMN_NAME_PERSONNAME + " CHAR PRIMARY KEY, " + COLUMN_NAME_DATE + " DATE, " 
           + COLUMN_NAME_TIME + " TIME);" ; 
     db.execSQL(createPerson); 

     String createAppointmentChecked = "CREATE TABLE " + TABLE_APPOINTMENT_CHECKED + "(" + COLUMN_NAME_DATE_LAST_CHECKED + " DATE);"; 
     db.execSQL(createAppointmentChecked); 
    } // End of method onCreate(...) 
    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
    { 
     db.execSQL("DROP TABLE IF EXISTS " + TABLE_PERSON); 
     db.execSQL("DROP TABLE IF EXISTS " + TABLE_APPOINTMENT_CHECKED); 
     onCreate(db); 
    } // End of method onUpgrade(...) 

    // Method which adds the person object (received via parameter) in the database. 
     public void addAppointment(Person person) 
     { 
      myDB = getWritableDatabase(); 
      ContentValues values = new ContentValues(); 

      values.put(COLUMN_NAME_PERSONNAME, person.getName()); 
      values.put(COLUMN_NAME_DATE, new SimpleDateFormat("yyyy-MM-dd").format(person.getDate().getTime())); 
      values.put(COLUMN_NAME_TIME, new SimpleDateFormat("HH:mm:ss").format(person.getTime().getTime())); 
      myDB.insert(TABLE_PERSON, null, values); 
      myDB.close(); 
     } // End of method addAppointment(...) 
     // Method that extracts all the individuals in the database sorted by month and then day. 
     public ArrayList<Person> getListSortByAppointment() 
     { 
      ArrayList<Person> list = new ArrayList<Person>(); 

      SQLiteDatabase rDB = getReadableDatabase(); 
      Cursor cursor = rDB.query(TABLE_PERSON, new String[] {"*"}, null, null,null, null, 
             "strftime('%m', " + COLUMN_NAME_DATE + "), strftime('%d', " + COLUMN_NAME_DATE + ")" 
            + " ASC", null); 

      if (cursor.moveToFirst()) 
      { 
       do 
       { 

        String name = cursor.getString(1); 
        Calendar date = Calendar.getInstance(); 
        Calendar time = Calendar.getInstance(); 
        try 
        { 
         date.setTime(new SimpleDateFormat("yyyy-MM-dd").parse(cursor.getString(4))); 
        } 
        catch (ParseException e) 
        { 
         e.printStackTrace(); 
        } 

        Person person = new Person(name, time, date); 
        list.add(person); 
       } while (cursor.moveToNext()); 
      } 

      rDB.close(); 
      return list; 
     } // End of method getListSortByBirthday() 
     public ArrayList<Person> getPersonWidthAppointmentToday() 
     { 
      ArrayList<Person> list = new ArrayList<Person>(); 

      SQLiteDatabase rDB = getReadableDatabase(); 
      Cursor cursor = rDB.query(TABLE_PERSON, new String[] {"*"}, "strftime('%m-%d', " + COLUMN_NAME_DATE + 
            ") = strftime('%m-%d', 'now')", null, null, null, null, null); 

      if (cursor.moveToFirst()) 
      { 
       do 
       { 

        String name = cursor.getString(1); 
        Calendar date = Calendar.getInstance(); 
        Calendar time = Calendar.getInstance(); 
        try 
        { 
         date.setTime(new SimpleDateFormat("yyyy-MM-dd").parse(cursor.getString(4))); 
        } 
        catch (ParseException e) 
        { 
         e.printStackTrace(); 
        } 

        Person person = new Person(name, time, date); 
        list.add(person); 
       } while (cursor.moveToNext()); 
      } 
      else 
       list = null; 
      rDB.close(); 

      return list; 
      // End of method getPersonWidthAppointmentToday() 
     } 

      // The method updates the values ​​of the person (which comes in as parameter) in the database. 
      public boolean updatePerson(Person person) 
      { 
       myDB = getWritableDatabase(); 

       ContentValues values = new ContentValues(); 
       values.put(COLUMN_NAME_TIME, new SimpleDateFormat("HH:mm:ss").format(person.getDate().getTime())); 
       values.put(COLUMN_NAME_DATE, new SimpleDateFormat("yyyy-MM-dd").format(person.getDate().getTime())); 

       return myDB.update(TABLE_PERSON, values, COLUMN_NAME_PERSONNAME + " = ?", new String[]{String.valueOf(person.getName())}) > 0; 
      } // End of method updatePerson(...) 


      // This method deletes the person object from the database 
      public void deletePerson(Person person) 
      { 
       myDB = getWritableDatabase(); 
       myDB.delete(TABLE_PERSON, COLUMN_NAME_PERSONNAME + " = ?", new String[]{String.valueOf(person.getName())}); 
       myDB.close(); 
      } // End of method deletePerson(...) 

      // Method which adds the date in the database. 
      public void addDateCheck(Calendar calendar) 
      { 
       myDB = getWritableDatabase(); 

       ContentValues values = new ContentValues(); 
       values.put(COLUMN_NAME_DATE_LAST_CHECKED, new SimpleDateFormat("yyyy-MM-dd").format(calendar.getTime())); 

       myDB.insert(TABLE_APPOINTMENT_CHECKED, null, values); 
       myDB.close(); 
      } 
     // End of method addAppointmentCheck(...) 
      // The method updates the values ​​of the date of the last check in the database. 
      public boolean updateDateCheck(Calendar calendar) 
      { 
       myDB = getWritableDatabase(); 
       String checkDate = new SimpleDateFormat("yyyy-MM-dd").format(calendar.getTime()); 

       ContentValues values = new ContentValues(); 
       values.put(COLUMN_NAME_DATE_LAST_CHECKED, checkDate); 
       return myDB.update(TABLE_APPOINTMENT_CHECKED, values, COLUMN_NAME_DATE_LAST_CHECKED + " = ?", new String[]{checkDate}) > 0; 
      } // End of method updateBirthdayCheck(...) 
     } // End of class DBHandler 

Answer 1

在主要活動創建的TextView

TextView textview = (TextView) findViewByID(R.id.textview);  
String text = textview.getText().toString(); 

下一個打開的數據庫和添加如下

SQLiteDatabase myDB = this.openOrCreateDatabase("SchedulerDB", SQLiteDatabase.OPEN_READWRITE, null); 
try {    
     SQLiteStatement stmt = dbObject.compileStatement("INSERT INTO Tablename (coulmnname) values (?)");    
     stmt.bindString(1, text); 
     stmt.executeInsert(); 

} catch (Exception e) { 
      e.printStackTrace(); 

} finally {    
      dbObject.close();   
}