I just started playing with the Master-Detail view template in Xcode 4.3 and I am trying to change the background color of master and set it to a color gradient. Here is what I tried:
Colors.m
#import "Colors.h"
@implementation Colors
+ (UIColor *) navigationMenuGradientTop
{
return [UIColor colorWithRed:213.0f/255.0f green:91.0f/255.0f blue:92.0f/255.0f alpha:1.0f];
}
+ (UIColor *) navigationMenuGradientBottom
{
return [UIColor colorWithRed:188.0f/255.0f green:0.0f/255.0f blue:1.0f/255.0f alpha:1.0f];
}
+ (CAGradientLayer *) navigationMenuGradient
{
NSArray *colors = [NSArray arrayWithObjects:(id)self.navigationMenuGradientTop, self.navigationMenuGradientBottom, nil];
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.colors = colors;
return gradientLayer;
}
@end
MasterViewController.m
import "Colors.h"
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];
CAGradientLayer *bgLayer = [Colors navigationMenuGradient];
bgLayer.frame = tableView.bounds;
[tableView.layer insertSublayer:bgLayer atIndex:0];
return cell;
}
Upon running I get the following error in main
- Thread 1: EXC_BAD_ACCESS (code=1, address=0xxxxxxxx)
int main(int argc, char *argv[])
{
@autorelasespool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
I have added the QuartzCore framework to the project as well. What am I missing over here? and what direction should I generally go in when such errors occur (because the build succeeded, app seems to have crashed here)?
UIView *view = [[[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 100)] autorelease];
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.colors = [NSArray arrayWithObjects:(id)[[UIColor blackColor] CGColor], (id)[[UIColor whiteColor] CGColor], nil];
[view.layer insertSublayer:gradient atIndex:0];
from: Gradients on UIView and UILabels On iPhone
this code can help your problem.