Question

-(void)setButtons_AsPerTheMatrixSelection

{

    int x = 7;
    int y = 60;

    for (int j = 0; j <= 35; ++j)
    {
        if (j <= 5)
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x, y, width, height)];
        else if (j > 5  && j <= 11)
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x-306, y+51, width, height)];
        else if (j > 11  && j <= 17)
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x-612, y+102, width, height)];
        else if (j > 17  && j <= 23)
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x-918, y+153, width, height)];
        else if (j > 23  && j <= 29)    
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x-1224, y+204, width, height)];
        else if (j > 29  && j <= 35)
            btnMatrix = [[UIButton alloc] initWithFrame:CGRectMake(x-1530, y+255, width, height)];

        btnMatrix.tag = j;
        [btnMatrix setBackgroundImage:imgDefaultBG forState:UIControlStateNormal];
        btnMatrix.userInteractionEnabled = TRUE;
        [btnMatrix addTarget:self action:@selector(changeImage:) forControlEvents:UIControlEventTouchUpInside];

        [viewWithButtons addSubview:btnMatrix];
        [self.view addSubview:viewWithButtons];

        x = x + 51;
        y = y;
        [arrButton addObject:btnMatrix];
    }

}

This is my code to add dynamic buttons as per the matrix of 6*6

here i am adding the button tag also,

Now i am going to click on button & would like to change background image with this code…

-(void)changeImage:(id)sender

{

UIImage *img = [UIImage imageNamed:@"No.png"];

UIButton *tmpButton = (UIButton *)[self.view viewWithTag:btnMatrix.tag];

NSLog(@"btn.tag is... %d",tmpButton.tag);


[btnMatrix setBackgroundImage:img forState:UIControlStateNormal];

}

When i click to any button it always changing image of last tagged button…

i have to change Background of the selected button itself.

how can it be possible.

Please guide me i am not getting a part where i am doing a mistake.

Thanks.

Answer 1

-(void)changeImage:(UIButton*)sender  
{
    UIImage *img = [UIImage imageNamed:@"No.png"];
    [sender setBackgroundImage:img forState:UIControlStateNormal];
}

BTW, your code is too messy, you may do like this

int pw = 306;
int ph = 51;

int ch = 6;
int cv = 6;

for ( int i = 0 ; i < cv ; ++i )
{
    for ( int j = 0 ; j < ch ; ++j )
    {
        UIButton *btnMatrix = [[[UIButton alloc] initWithFrame:CGRectMake(7+pw*j, 51+ph*i, width, height)] autorelease];
        btnMatrix.tag = i*ch+j;
    }
}