[![As per screenshot i need initially from index 0 to index 4 should display x buttons,and from index 5 to index 8 need +buttons.whenever am tapping on the buttons it should change their states as well.][1]][1]
[1]: http://i.stack.imgur.com/YTVzN.png
Here is my code.
ViewController.m
@property (nonatomic, strong) UICollectionView *collectionview;
@property (nonatomic, strong) UIButton *deleteBtn;
@property (nonatomic, strong) NSMutableArray *photosArray;
@property (nonatomic, strong) NSMutableArray *selectedPhotosArray;
- (void)viewDidLoad
{
_photosArray = [[NSMutableArray alloc]initWithObjects:@"angry_birds_cake.jpg",
@"full_breakfast.jpg",
@"green_tea.jpg",
@"hamburger.jpg",
@"mushroom_risotto.jpg",
@"",
@"",
@"",
@"", nil];
selectedPhotosArray = [[NSMutableArray alloc]init];
NSLog(@"%@",[[NSUserDefaults standardUserDefaults]objectForKey:@"table"]);
if ([[NSUserDefaults standardUserDefaults] objectForKey:@"cell"]!= nil) {
selectedPhotosArray = [[[NSUserDefaults standardUserDefaults] arrayForKey:@"cell"] mutableCopy];
}
else
{
selectedPhotosArray = [[NSMutableArray alloc]initWithObjects:@"1",@"1",@"1",@"1",@"1",@"1",@"1",@"1",@"1",nil];
}
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = @"cellID";
RACollectionViewCell *cell = [self.collectionView dequeueReusableCellWithReuseIdentifier:cellID forIndexPath:indexPath];
[cell.imageView removeFromSuperview];
cell.imageView.frame = cell.bounds;
NSLog(@"_photosArray.count--------%ld",(unsigned long)_photosArray.count);
NSLog(@"indexPath.row--------%ld",(long)indexPath.row);
cell.imageView.image = [UIImage imageNamed:[_photosArray objectAtIndex:indexPath.item]];
cell.backgroundColor = [UIColor lightGrayColor];
[cell.contentView addSubview:cell.imageView];
deleteBtn = [UIButton buttonWithType:UIButtonTypeCustom];
deleteBtn.frame=CGRectMake(80, 80, 19, 19);
[deleteBtn setImage:[UIImage imageNamed:@"ic_dele_photo.png"] forState:UIControlStateNormal];
deleteBtn.tag = indexPath.row;
[deleteBtn addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:deleteBtn];
if (indexPath.row<5) {
[deleteBtn setImage:[UIImage imageNamed:@"ic_dele_photo.png"] forState:UIControlStateNormal];
}
else
{
[deleteBtn setImage:[UIImage imageNamed:@"ic_add_photo.png"] forState:UIControlStateNormal];
}
if ([[selectedPhotosArray objectAtIndex:indexPath.row] isEqualToString:@"0"]) {
[deleteBtn setImage:[UIImage imageNamed:@"ic_add_photo.png"] forState:UIControlStateNormal];
}
else if([[selectedPhotosArray objectAtIndex:indexPath.row] isEqualToString:@"1"])
{
[deleteBtn setImage:[UIImage imageNamed:@"ic_dele_photo.png"]forState:UIControlStateNormal];
}
return cell;
}
-(void)buttonClicked :(id)sender
{
NSLog(@"%ld",(long)[sender tag]);
if ([[selectedPhotosArray objectAtIndex:[sender tag]] isEqualToString:@"0"]) {
[selectedPhotosArray replaceObjectAtIndex:[sender tag] withObject:@"1"];
}
else{
[selectedPhotosArray replaceObjectAtIndex:[sender tag] withObject:@"0"];
}
[_collectionView reloadData];
NSLog(@"selectedPhotosArray == %@",selectedPhotosArray);
[[NSUserDefaults standardUserDefaults]setObject:selectedPhotosArray forKey:@"cell"];
[[NSUserDefaults standardUserDefaults]synchronize];
}
我无法在精确的单元格中设置按钮。请任何人指导我。我使用自定义单元格RACollectionViewCell，我声明了imageview.Am无法将indexpath 0中的图像x按钮设置为indexpath 4，而+ indexpath 5到indexpath 8.