这里我正在开发一个展开的TableViewCell
,而我正在使用TableView didSelectRowAtIndexPath
方法进行单元格展开,这里我使用了两个TableView Cell' s
但我需要按钮动作SecondCell将会扩展。请你帮忙我在这里如何实现以下代码,
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// disable touch on expanded cell
UITableViewCell *cell = [self.theTableView cellForRowAtIndexPath:indexPath];
if ([[cell reuseIdentifier] isEqualToString:@"ExpandedCellIdentifier"]) {
return;
}
// deselect row
[tableView deselectRowAtIndexPath:indexPath
animated:NO];
// get the actual index path
indexPath = [self actualIndexPathForTappedIndexPath:indexPath];
// save the expanded cell to delete it later
NSIndexPath *theExpandedIndexPath = self.expandedIndexPath;
// same row tapped twice - get rid of the expanded cell
if ([indexPath isEqual:self.expandingIndexPath]) {
self.expandingIndexPath = nil;
self.expandedIndexPath = nil;
}
// add the expanded cell
else {
self.expandingIndexPath = indexPath;
self.expandedIndexPath = [NSIndexPath indexPathForRow:[indexPath row] + 1
inSection:[indexPath section]];
}
[tableView beginUpdates];
if (theExpandedIndexPath) {
[_theTableView deleteRowsAtIndexPaths:@[theExpandedIndexPath]
withRowAnimation:UITableViewRowAnimationNone];
}
if (self.expandedIndexPath) {
[_theTableView insertRowsAtIndexPaths:@[self.expandedIndexPath]
withRowAnimation:UITableViewRowAnimationNone];
}
[tableView endUpdates];
// scroll to the expanded cell
[self.theTableView scrollToRowAtIndexPath:indexPath
atScrollPosition:UITableViewScrollPositionMiddle
animated:YES];
}
但我希望实现按钮点击secondCell将是扩展。
- (IBAction)expand:(id)sender {
}
你能帮助我吗,谢谢你。
答案 0 :(得分:1)
这是我的解决方案,您可以通过禁用大小类创建单独的.xib文件来轻松实现逻辑。使用布尔变量检查是否已选中它。如果是,则重新加载特定单元格并使用委托方法heightforrow并在此处确定该布尔变量。这很简单......希望你理解。如果没有,请告诉我。我会分享我编写的代码。
编辑帖子,以下是我的代码: -
@implementation ViewController
BOOL sel=NO;
NSMutableArray *a,*b;
NSIndexPath *path;
- (void)viewDidLoad {
[super viewDidLoad];
a=[[NSMutableArray alloc] initWithObjects:@"Apple",@"Mango",@"Orange",@"Pineapple",@"Cricket",@"Bike",@"Music", nil];
b=[[NSMutableArray alloc] initWithArray:a copyItems:YES];
[self.tview registerNib:[UINib nibWithNibName:@"cell1" bundle:nil] forCellReuseIdentifier:@"cell"];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return a.count;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView beginUpdates];
if([[a objectAtIndex:indexPath.row] isEqualToString:@"Selected"]){
sel=NO;
[a replaceObjectAtIndex:indexPath.row withObject:[b objectAtIndex:indexPath.row]];
}
else{
[a replaceObjectAtIndex:indexPath.row withObject:@"Selected"];
sel=YES;
}
[tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
[tableView endUpdates];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
if([[a objectAtIndex:indexPath.row] isEqualToString:@"Selected"]){
return 100;
}
return 60;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellIdentifier = @"cell";
cell1 *cell = (cell1 *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
// If there is no cell to reuse, create a new one
/* if(cell == nil)
{
cell = [[listcustomcell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}*/
if (!cell)
{
cell = [[cell1 alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
NSLog(@"%f",[self tableView:self.tview heightForRowAtIndexPath:indexPath]);
cell.btn.frame=CGRectMake(cell.btn.frame.origin.x, [self tableView:self.tview heightForRowAtIndexPath:indexPath]*0.3, cell.btn.frame.size.width*1.3, cell.btn.frame.size.height);
UIButton *b=[[UIButton alloc] initWithFrame:cell.btn.frame];
[cell.btn removeFromSuperview];
[b setTitle:@"button" forState:UIControlStateNormal];
[cell.contentView addSubview:b];
[b addTarget:self action:@selector(checkButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
- (void)checkButtonTapped:(id)sender
{
CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tview];
NSIndexPath *indexPath = [self.tview indexPathForRowAtPoint:buttonPosition];
if (indexPath != nil)
{
//Just make sure that you've selected no selection option for the tableview.
[self tableView:self.tview didSelectRowAtIndexPath:indexPath];
NSLog(@"You've selected a row %ld",(long)indexPath.row);
}
}
@end
创建一个单独的.xib并将按钮放在那里。要调整按钮框架的大小,您需要将其删除并在刷新时再次添加。希望它有所帮助:)
答案 1 :(得分:0)
我通过你的代码,我认为你只需要获取单元格。请参阅以下代码获取它。
CGPoint touchPoint = [textField convertPoint:CGPointZero toView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:touchPoint];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
现在执行您在didSelectRowAtIndexPath
中所做的相同步骤。
答案 2 :(得分:0)
如果要扩展/折叠tableView单元格, 我做了一个演示,可以根据需要为您提供准确的行为。这是链接:https://github.com/rushisangani/TableViewCellExpand
请按照演示文稿中的说明设置展开/展开视图的约束。
它基于内容拥抱和内容压缩阻力优先。
答案 3 :(得分:-1)
- (IBAction)expand:(id)sender {
CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.theTableView];
NSIndexPath *indexPathInner = [self.theTableView indexPathForRowAtPoint:buttonPosition];
// disable touch on expanded cell
UITableViewCell *cell = [self.theTableView cellForRowAtIndexPath:indexPathInner];
if ([[cell reuseIdentifier] isEqualToString:@"ExpandedCellIdentifier"]) {
return;
}
// deselect row
[tableView deselectRowAtIndexPath:indexPath
animated:NO];
// get the actual index path
indexPath = [self actualIndexPathForTappedIndexPath:indexPath];
// save the expanded cell to delete it later
NSIndexPath *theExpandedIndexPath = self.expandedIndexPath;
// same row tapped twice - get rid of the expanded cell
if ([indexPath isEqual:self.expandingIndexPath]) {
self.expandingIndexPath = nil;
self.expandedIndexPath = nil;
}
// add the expanded cell
else {
self.expandingIndexPath = indexPath;
self.expandedIndexPath = [NSIndexPath indexPathForRow:[indexPath row] + 1
inSection:[indexPath section]];
}
[tableView beginUpdates];
if (theExpandedIndexPath) {
[_theTableView deleteRowsAtIndexPaths:@[theExpandedIndexPath]
withRowAnimation:UITableViewRowAnimationNone];
}
if (self.expandedIndexPath) {
[_theTableView insertRowsAtIndexPaths:@[self.expandedIndexPath]
withRowAnimation:UITableViewRowAnimationNone];
}
[tableView endUpdates];
// scroll to the expanded cell
[self.theTableView scrollToRowAtIndexPath:indexPath
atScrollPosition:UITableViewScrollPositionMiddle
animated:YES];
}