Android Question I'm trying to make a sudoku game in android but I'm new in programming

aeric said:

Here is an example

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1. Design the user interface: Use the B4A Designer to create a 9x9 grid layout for the Sudoku board. You can use a Table (with a 9x9 GridLayout) and place EditTexts (or Labels for fixed numbers) in each cell. Make sure to set inputType of EditTexts to 'number' to restrict input to only numbers.
2. Create a 2D array for storing the Sudoku grid: You can create a 2D array (9x9) to store the initial state of the Sudoku grid for each level. For example:
   
   B4X:

   Dim SudokuGrid(9, 9) As Int
3. Define the levels:
   Create different levels with pre-filled numbers by initializing the 2D array for each level. For example:
   
   B4X:

   Sub Level1()
       SudokuGrid = Array As Int( _
           5, 3, 0, 0, 7, 0, 0, 0, 0, _
           6, 0, 0, 1, 9, 5, 0, 0, 0, _
           0, 9, 8, 0, 0, 0, 0, 6, 0, _
           8, 0, 0, 0, 6, 0, 0, 0, 3, _
           4, 0, 0, 8, 0, 3, 0, 0, 1, _
           7, 0, 0, 0, 2, 0, 0, 0, 6, _
           0, 6, 0, 0, 0, 0, 2, 8, 0, _
           0, 0, 0, 4, 1, 9, 0, 0, 5, _
           0, 0, 0, 0, 8, 0, 0, 7, 9)
   End Sub
4. Populate the UI grid with the level data:
   Create a subroutine to populate the EditTexts (or Labels) with the numbers from the 2D array. For example:
   
   B4X:

   Sub PopulateGrid()
       For row = 0 To 8
           For col = 0 To 8
               Dim cell As EditText = Table1.GetView(row * 9 + col)
               If SudokuGrid(row, col) > 0 Then
                   cell.Text = SudokuGrid(row, col)
                   cell.Enabled = False ' Disable input for pre-filled numbers
               Else
                   cell.Text = ""
                   cell.Enabled = True ' Enable input for empty cells
               End If
           Next
       Next
   End Sub
5. Implement input validation: You can add a TextChanged event for each EditText to validate the user's input and check if the number is valid for the row, column, and 3x3 square.
6. Add a mechanism for switching levels: Implement a level selection feature that allows users to switch between different levels. You can use buttons or a spinner for this purpose. Once a level is selected, call the corresponding level subroutine (e.g., Level1()) and then call PopulateGrid() to update the UI.
7. B4X:

   Sub IsSolutionCorrect() As Boolean
       For row = 0 To 8
           For col = 0 To 8
               Dim cell As EditText = Table1.GetView(row * 9 + col)
               Dim num As Int = cell.Text
               If Not IsValidMove(row, col, num) Then
                   Return False
               End If
           Next
       Next
       Return True
   End Sub
8. Add a "Check Solution" button:
   Place a button on the screen for users to check their solution. In the Click event for this button, call the IsSolutionCorrect() subroutine to validate the user's input. If the solution is correct, display a congratulatory message; if not, show an error message.
   
   B4X:

   Sub CheckSolutionButton_Click
       If IsSolutionCorrect() Then
           ToastMessageShow("Congratulations! You've solved the puzzle!", True)
       Else
           ToastMessageShow("Oops! There's an error in your solution. Please try again.", True)
       End If
   End Sub
9. Add a "Clear Board" or "Reset" button:
   To allow users to start over, add a "Clear Board" or "Reset" button that resets the Sudoku grid to the initial state of the current level. This can be done by calling the PopulateGrid() subroutine again.
   
   B4X:

   Sub ClearBoardButton_Click
       PopulateGrid()
   End Sub
10. Enhance the user experience:
    To improve the user experience, consider adding features such as a timer, a hint system, or an option to display the correct solution. Additionally, you can customize the appearance of the grid, such as highlighting the selected cell or differentiating between editable and non-editable cells with different colors.

Lee Gillie said:

Should I be worried?

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kleiny said:

Hi everyone, I was thinking of creating a game of sudoku but I don't know where to start I thought about making the grids for it first and search for some ways to do it and didn't find a way to make some work. I thought of making it by levels like I'll put the numbers myself for each level and not something that is generated. Back to the question is there a way to make grids easily and input will be able to input numbers in b4a?

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So I gave up ...

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kleiny said:

So I gave up, the one thing that I thought of now is to put edittext on all the boxes now I don't know how function the buttons to put numbers on the edittexts, because if I I press one of the buttons it shows to all edittexts.

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