Monday 27 February 2012

Masking Images With Different shape with current image


- (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage {
    
CGImageRef maskRef = maskImage.CGImage
    
CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
                                        CGImageGetHeight(maskRef),
                                        CGImageGetBitsPerComponent(maskRef),
                                        CGImageGetBitsPerPixel(maskRef),
                                        CGImageGetBytesPerRow(maskRef),
                                        CGImageGetDataProvider(maskRef), NULL, false);
    
CGImageRef masked = CGImageCreateWithMask([image CGImage], mask);
return [UIImage imageWithCGImage:masked];
    
}

Saturday 18 February 2012

(button check in cell) Implement a Custom Accessory View For UITableView in iPhone

- (void)viewDidLoad
{
NSString *path = [[NSBundle mainBundle] pathForResource:@"CheckMark"ofType:@"plist"];
self.dataArray = [NSMutableArray arrayWithContentsOfFile:path];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [dataArray count];
}
- (void)tableView:(UITableView *)tableView  didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
[self tableView: self.tableView  accessoryButtonTappedForRowWithIndexPath:indexPath];
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (UITableViewCell *)tableView:(UITableView *)tableView  cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *kCustomCellID = @"MyCellID";
UITableViewCell *cell = [tableView    dequeueReusableCellWithIdentifier:kCustomCellID];
if (cell == nil)
{
cell = [[[UITableViewCell alloc]  initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCustomCellID] autorelease];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
cell.selectionStyle = UITableViewCellSelectionStyleBlue;
}
NSMutableDictionary *item = [dataArray bjectAtIndex:indexPath.row];
cell.textLabel.text = [item objectForKey:@"text"];
[item setObject:cell forKey:@"cell"];
BOOL checked = [[item objectForKey:@"checked"] boolValue];
UIImage *image = (checked) ? [UIImage   imageNamed:@"checked.png"] : [UIImage imageNamed:@"unchecked.png"];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
CGRect frame = CGRectMake(0.0, 0.0, image.size.width, image.size.height);
button.frame = frame;
[button setBackgroundImage:image forState:UIControlStateNormal];
[button addTarget:self action:@selector(checkButtonTapped:event:) forControlEvents:UIControlEventTouchUpInside];
button.backgroundColor = [UIColor clearColor];
cell.accessoryView = button;
return cell;
}
- (void)checkButtonTapped:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:currentTouchPosition];
if (indexPath != nil)
{
[self tableView: self.tableView accessoryButtonTappedForRowWithIndexPath:indexPath];
}
}
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
NSMutableDictionary *item = [dataArray objectAtIndex:indexPath.row];
BOOL checked = [[item objectForKey:@"checked"] boolValue];
[item setObject:[NSNumber numberWithBool:!checked] forKey:@"checked"];
UITableViewCell *cell = [item objectForKey:@"cell"];
UIButton *button = (UIButton *)cell.accessoryView;
UIImage *newImage = (checked) ? [UIImage imageNamed:@"unchecked.png"] : [UIImage imageNamed:@"checked.png"];
[button setBackgroundImage:newImage forState:UIControlStateNormal];
}