Writing in UIView

[jumpi]

hi ppl,

I have this matrix:

        char **matrix;
	
	matrix = (char **) malloc(LINE * sizeof (char *));
	for(alloc=0; alloc < LINE; alloc++)
		matrix = (char **) malloc(COLUMN * sizeof (char *));
	
	for(i=0; i < LINE; i++)
		for(j=0; j < COLUMN; j++)
			matrix[i][j] =  'A' + + rand()%('Z' - 'A' + 1);

I think who I need print this matrix in a UIView for view in iPhone, but dont have success...

Any help or reference about this???

[PhoneyDeveloper]

Try creating an NSMutableArray of NSMutableStrings. Add your random chars to each mutable string. It might make it easier to print it out.

[jumpi]

Hi,

I make this:

- (char)randomStr {

	char temp;
	srand(time(NULL));
	temp = 'A' + rand()%('Z' - 'A' + 1);
	
	return temp;
	
}


	int i, j;
	NSMutableArray* row;
	
	NSMutableArray* matrix = [NSMutableArray new];
	for (i=0; i<LINE; i++){
		row = [NSMutableArray new];
		for(j=0; j < COLUMN; j++) 
			[row addObject: [NSString stringWithFormat:@"%c", [self randomStr]]]; 
		[matrix addObject: row];
	}

But I have problem... you have an example or reference for search this???

Thanks

[PhoneyDeveloper]

I don't know what you mean by 'search this' You need to explain better the problem you are having and the goal of this code.

[jumpi]

I have progress...

I make this...

	srand(time(NULL));
	char matriz[LINE][COLUMN];
	
	NSString *teste;
	int i, j, px, py;
	
	//Preenchimento da matriz
	
	for(i=0; i < LINE; i++)
		for(j=0; j < COLUMN; j++) {
			
			matriz[i][j] =  'A' + + rand()%('Z' - 'A' + 1);
			teste = [NSString stringWithFormat:@"%c",matriz[i][j]];
		}
	
	CGPoint  location = CGPointMake(10, 20);
	UIFont   *font    = [UIFont systemFontOfSize:24];
	[[UIColor whiteColor] set];
	
	[teste drawAtPoint:location withFont:font];

But I dont print the matrix, I print the last char of teste, What print the matrix in screen???

[jumpi]

Hi Phoney,

My intention is creating an word search puzzle app for my learning in iPhone development and I think who first step is show the matrix of chars in the screen.

Thanks for help and suggests are acceptable for this (documentation, examples)

[PhoneyDeveloper]

I think you need to build a single NSString for each row. That way when you draw the string it will draw the whole row. If you want to use the C 2D array as your data storage that is OK. Just build the string for drawing inside your drawRect: method.

Use NSMutableString appendFormat: and loop over the characters in one row adding them to the string. When you reach the end of the row then draw the string.

Another way would be to draw each character individually. Loop over the characters in each row and create a string for each character and then draw it. Or use NSMutableString setString: to replace the character.

You may want to use a fixed-width font like Courier.

[jumpi]

Thanks for reply,

But I need of some example of this, any documentation, source....

have one form of creating a matrix in native Obj-C ? Any example, documentation of how to make this??? Thanks...

[PhoneyDeveloper]

No examples handy but something like this (untested) should print the values:

	NSMutableString*	s = [NSMutableString string];

	for (NSInteger i = 0; i < LINE; i++)
	{
		for (NSInteger j = 0; j < COLUMN; j++)
		{
			[s appendFormat:@" | %c |", matriz[i][j]];
		}
		location.y += 30.0f;	// move to new line
		[s drawAtPoint:location withFont:font];
		[s setString:@""];
	}

[jumpi]

Thanks a lot Phoney!! I make some modifications and this work!!!

Hey, do you know any documentation about the use of selection in iPhone??? How to start with this???

Sorry for my inconvenience....