Who to access a UIButton using tag and button change image?
- by ste
I need to change the images on a matrix of UIButtons, and the only thing I know of to address the buttons, is the tag. But I can not find a way to actually us this identifier.
The buttons are created programmatically during viewDidLoad.
Here is the code for creating the buttons:
#define N_ROWS 4
#define N_COLS 3
int N_IMG = 0;
for (int a = 0; a < N_COLS; a++) {
for (int j = 0; j < N_ROWS; j++) {
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
aButton.frame = CGRectMake(a * 65.0 + 25, j * 65.0 + 15, 10.0, 10.0);
aButton.tag = j + a * N_ROWS + 1;
[aButton setBackgroundColor:[UIColor redColor]];
N_IMG = N_IMG++;
[self.view addSubview:aButton];
number_sorted = 1;
}
}
Here is the code for setting the image:
- (IBAction)set_image:(id)sender {
#define N_ROWS 4
#define N_COLS 3
int N_IMG = 0;
for (int a = 0; a < N_COLS; a++) {
for (int j = 0; j < N_ROWS; j++) {
uibutton aButton.tag == (j + a * N_ROWS + 1)
setImage:[UIImage imageNamed:[puzzles objectAtIndex:N_IMG]]
forState:UIControlStateNormal];
N_IMG = N_IMG++;
}
}
}
This is the code where the truble starts:
uibutton aButton.tag == (j + a * N_ROWS + 1)
Who can I set this up to work?
