Ios 动态更改UITableView高度

我想从另一个viewcontroller根据其单元格高度的总和更改tableview的高度，因为它们是动态的。有可能吗？谢谢

附加内容：

我基本上有一个UserProfileViewController，它在屏幕的一半上有一个containerview。在这里，我添加了其他不同的ViewController：

对于“墙”按钮，我就是这样添加viewcontroller及其后续的tableview的：

- (IBAction)wallButtonPressed:(id)sender
{
    //Check if there is an instance of the viewcontroller we want to display. If not make one and set it's tableview frame to the container's view bounds
    if(!_userWallViewController) {
        self.userWallViewController = [[WallViewController alloc] init];
//        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;

    }

    [self.userWallViewController.containerView addSubview:self.userWallViewController.activityFeedTableView];
    //If the currentviewcontroller adn it's view are already added to the hierarchy remove them
    [self.currentViewController.view removeFromSuperview];
    [self.currentViewController removeFromParentViewController];

    //Add the desired viewcontroller to the currentviewcontroller
    self.currentViewController = self.userWallViewController;

    //Pass the data needed for the desired viewcontroller to it's instances
    self.userWallViewController.searchURLString = [NSString stringWithFormat:@"event/user/%@/", self.userID];
    self.userWallViewController.sendCommentURLString = [NSString stringWithFormat:@"event/message/%@", self.userID];

    [self.userWallViewController.activityFeedTableView reloadData];

    self.userWallViewController.totalCellHeight = ^(float totalCellHeight){

        self.scrollView.contentSize = CGSizeMake(320.0, totalCellHeight);
        CGRect newFrame = self.userWallViewController.containerView.frame;
        newFrame.size.height = totalCellHeight + 33.0;
        self.userWallViewController.containerView.frame = newFrame;

        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;
    };

    //Add this containerview to the desired viewcontroller's containerView
    self.userWallViewController.containerView = self.containerView;


    //Add the needed viewcontroller and view to the parent viewcontroller and the containerview
    [self addChildViewController:self.userWallViewController];
    [self.containerView addSubview:self.userWallViewController.view];

    //CLEAN UP THE CONTAINER VIEW BY REMOVING THE PREVIOUS ADDED TABLE VIEWS
    [self.userFansViewController.userSimpleTableView removeFromSuperview];
    [self.fanOfViewController.userSimpleTableView removeFromSuperview];
    [self.userPublishedMovellaListViewController.gridView removeFromSuperview];

    [self.userPublishedMovellaListViewController removeFromParentViewController];

    self.userPublishedMovellaListViewController = nil;
}

-(UITableView *)activityFeedTableView
{
    if (!_activityFeedTableView) {
        _activityFeedTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 850.0) style:UITableViewStylePlain];
    }
    return _activityFeedTableView;
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the frame accordingly

    [UIView animateWithDuration:0.25 animations:^{
        CGRect frame = self.tableView.frame;
        frame.size.height = height;
        self.tableView.frame = frame;

        // if you have other controls that should be resized/moved to accommodate
        // the resized tableview, do that here, too
    }];
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the height constraint accordingly

    [UIView animateWithDuration:0.25 animations:^{
        self.tableViewHeightConstraint.constant = height;
        [self.view setNeedsUpdateConstraints];
    }];
}

在该viewcontroller中，我将初始化我的tableview：

- (IBAction)wallButtonPressed:(id)sender
{
    //Check if there is an instance of the viewcontroller we want to display. If not make one and set it's tableview frame to the container's view bounds
    if(!_userWallViewController) {
        self.userWallViewController = [[WallViewController alloc] init];
//        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;

    }

    [self.userWallViewController.containerView addSubview:self.userWallViewController.activityFeedTableView];
    //If the currentviewcontroller adn it's view are already added to the hierarchy remove them
    [self.currentViewController.view removeFromSuperview];
    [self.currentViewController removeFromParentViewController];

    //Add the desired viewcontroller to the currentviewcontroller
    self.currentViewController = self.userWallViewController;

    //Pass the data needed for the desired viewcontroller to it's instances
    self.userWallViewController.searchURLString = [NSString stringWithFormat:@"event/user/%@/", self.userID];
    self.userWallViewController.sendCommentURLString = [NSString stringWithFormat:@"event/message/%@", self.userID];

    [self.userWallViewController.activityFeedTableView reloadData];

    self.userWallViewController.totalCellHeight = ^(float totalCellHeight){

        self.scrollView.contentSize = CGSizeMake(320.0, totalCellHeight);
        CGRect newFrame = self.userWallViewController.containerView.frame;
        newFrame.size.height = totalCellHeight + 33.0;
        self.userWallViewController.containerView.frame = newFrame;

        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;
    };

    //Add this containerview to the desired viewcontroller's containerView
    self.userWallViewController.containerView = self.containerView;


    //Add the needed viewcontroller and view to the parent viewcontroller and the containerview
    [self addChildViewController:self.userWallViewController];
    [self.containerView addSubview:self.userWallViewController.view];

    //CLEAN UP THE CONTAINER VIEW BY REMOVING THE PREVIOUS ADDED TABLE VIEWS
    [self.userFansViewController.userSimpleTableView removeFromSuperview];
    [self.fanOfViewController.userSimpleTableView removeFromSuperview];
    [self.userPublishedMovellaListViewController.gridView removeFromSuperview];

    [self.userPublishedMovellaListViewController removeFromParentViewController];

    self.userPublishedMovellaListViewController = nil;
}

-(UITableView *)activityFeedTableView
{
    if (!_activityFeedTableView) {
        _activityFeedTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 850.0) style:UITableViewStylePlain];
    }
    return _activityFeedTableView;
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the frame accordingly

    [UIView animateWithDuration:0.25 animations:^{
        CGRect frame = self.tableView.frame;
        frame.size.height = height;
        self.tableView.frame = frame;

        // if you have other controls that should be resized/moved to accommodate
        // the resized tableview, do that here, too
    }];
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the height constraint accordingly

    [UIView animateWithDuration:0.25 animations:^{
        self.tableViewHeightConstraint.constant = height;
        [self.view setNeedsUpdateConstraints];
    }];
}

---

我在计算单元格高度的总和，问题是在调用te tableview的getter之后调用单元格高度方法。因此，我需要某种方法来知道何时对所有单元格执行单元格高度方法，然后我可以调整tableview的大小。谢谢

没有根据tableview的内容更改表格高度的系统功能。话虽如此，可以基于内容，特别是基于tableview的

contentSize

以编程方式更改tableview的高度（这比自己手动计算高度更容易）。根据您是否使用iOS 6中的新自动布局，一些细节会有所不同

但假设您正在

viewdiload

中配置表视图的基础模型，如果您想调整表视图的高度，可以在

viewdilead

中执行此操作：

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    [self adjustHeightOfTableview];
}

同样，如果您曾经为tableview执行过

重新加载数据

（或以其他方式添加或删除行），您需要确保您也在那里手动调用

adjustHeightOfTableView

，例如：

- (IBAction)onPressButton:(id)sender
{
    [self buildModel];
    [self.tableView reloadData];

    [self adjustHeightOfTableview];
}

所以问题是我们的

调整高度表视图应该做什么。不幸的是，这是您是否使用iOS 6自动布局的函数。您可以通过打开故事板或NIB并转到“文件检查器”（例如，按option+command+1或单击右侧面板上的第一个选项卡）来确定是否已启用自动布局：


让我们假设autolayout关闭了一秒钟。在这种情况下，它非常简单，
adjustHeightOfTableview
只需调整tableview的
frame
：

- (IBAction)wallButtonPressed:(id)sender
{
    //Check if there is an instance of the viewcontroller we want to display. If not make one and set it's tableview frame to the container's view bounds
    if(!_userWallViewController) {
        self.userWallViewController = [[WallViewController alloc] init];
//        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;

    }

    [self.userWallViewController.containerView addSubview:self.userWallViewController.activityFeedTableView];
    //If the currentviewcontroller adn it's view are already added to the hierarchy remove them
    [self.currentViewController.view removeFromSuperview];
    [self.currentViewController removeFromParentViewController];

    //Add the desired viewcontroller to the currentviewcontroller
    self.currentViewController = self.userWallViewController;

    //Pass the data needed for the desired viewcontroller to it's instances
    self.userWallViewController.searchURLString = [NSString stringWithFormat:@"event/user/%@/", self.userID];
    self.userWallViewController.sendCommentURLString = [NSString stringWithFormat:@"event/message/%@", self.userID];

    [self.userWallViewController.activityFeedTableView reloadData];

    self.userWallViewController.totalCellHeight = ^(float totalCellHeight){

        self.scrollView.contentSize = CGSizeMake(320.0, totalCellHeight);
        CGRect newFrame = self.userWallViewController.containerView.frame;
        newFrame.size.height = totalCellHeight + 33.0;
        self.userWallViewController.containerView.frame = newFrame;

        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;
    };

    //Add this containerview to the desired viewcontroller's containerView
    self.userWallViewController.containerView = self.containerView;


    //Add the needed viewcontroller and view to the parent viewcontroller and the containerview
    [self addChildViewController:self.userWallViewController];
    [self.containerView addSubview:self.userWallViewController.view];

    //CLEAN UP THE CONTAINER VIEW BY REMOVING THE PREVIOUS ADDED TABLE VIEWS
    [self.userFansViewController.userSimpleTableView removeFromSuperview];
    [self.fanOfViewController.userSimpleTableView removeFromSuperview];
    [self.userPublishedMovellaListViewController.gridView removeFromSuperview];

    [self.userPublishedMovellaListViewController removeFromParentViewController];

    self.userPublishedMovellaListViewController = nil;
}

-(UITableView *)activityFeedTableView
{
    if (!_activityFeedTableView) {
        _activityFeedTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 850.0) style:UITableViewStylePlain];
    }
    return _activityFeedTableView;
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the frame accordingly

    [UIView animateWithDuration:0.25 animations:^{
        CGRect frame = self.tableView.frame;
        frame.size.height = height;
        self.tableView.frame = frame;

        // if you have other controls that should be resized/moved to accommodate
        // the resized tableview, do that here, too
    }];
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the height constraint accordingly

    [UIView animateWithDuration:0.25 animations:^{
        self.tableViewHeightConstraint.constant = height;
        [self.view setNeedsUpdateConstraints];
    }];
}

但是，如果自动布局处于启用状态，
adjustHeightOfTableview
将调整表视图的高度约束：

- (IBAction)wallButtonPressed:(id)sender
{
    //Check if there is an instance of the viewcontroller we want to display. If not make one and set it's tableview frame to the container's view bounds
    if(!_userWallViewController) {
        self.userWallViewController = [[WallViewController alloc] init];
//        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;

    }

    [self.userWallViewController.containerView addSubview:self.userWallViewController.activityFeedTableView];
    //If the currentviewcontroller adn it's view are already added to the hierarchy remove them
    [self.currentViewController.view removeFromSuperview];
    [self.currentViewController removeFromParentViewController];

    //Add the desired viewcontroller to the currentviewcontroller
    self.currentViewController = self.userWallViewController;

    //Pass the data needed for the desired viewcontroller to it's instances
    self.userWallViewController.searchURLString = [NSString stringWithFormat:@"event/user/%@/", self.userID];
    self.userWallViewController.sendCommentURLString = [NSString stringWithFormat:@"event/message/%@", self.userID];

    [self.userWallViewController.activityFeedTableView reloadData];

    self.userWallViewController.totalCellHeight = ^(float totalCellHeight){

        self.scrollView.contentSize = CGSizeMake(320.0, totalCellHeight);
        CGRect newFrame = self.userWallViewController.containerView.frame;
        newFrame.size.height = totalCellHeight + 33.0;
        self.userWallViewController.containerView.frame = newFrame;

        self.userWallViewController.activityFeedTableView.frame = self.containerView.bounds;
    };

    //Add this containerview to the desired viewcontroller's containerView
    self.userWallViewController.containerView = self.containerView;


    //Add the needed viewcontroller and view to the parent viewcontroller and the containerview
    [self addChildViewController:self.userWallViewController];
    [self.containerView addSubview:self.userWallViewController.view];

    //CLEAN UP THE CONTAINER VIEW BY REMOVING THE PREVIOUS ADDED TABLE VIEWS
    [self.userFansViewController.userSimpleTableView removeFromSuperview];
    [self.fanOfViewController.userSimpleTableView removeFromSuperview];
    [self.userPublishedMovellaListViewController.gridView removeFromSuperview];

    [self.userPublishedMovellaListViewController removeFromParentViewController];

    self.userPublishedMovellaListViewController = nil;
}

-(UITableView *)activityFeedTableView
{
    if (!_activityFeedTableView) {
        _activityFeedTableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 850.0) style:UITableViewStylePlain];
    }
    return _activityFeedTableView;
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the frame accordingly

    [UIView animateWithDuration:0.25 animations:^{
        CGRect frame = self.tableView.frame;
        frame.size.height = height;
        self.tableView.frame = frame;

        // if you have other controls that should be resized/moved to accommodate
        // the resized tableview, do that here, too
    }];
}

- (void)adjustHeightOfTableview
{
    CGFloat height = self.tableView.contentSize.height;
    CGFloat maxHeight = self.tableView.superview.frame.size.height - self.tableView.frame.origin.y;

    // if the height of the content is greater than the maxHeight of
    // total space on the screen, limit the height to the size of the
    // superview.

    if (height > maxHeight)
        height = maxHeight;

    // now set the height constraint accordingly

    [UIView animateWithDuration:0.25 animations:^{
        self.tableViewHeightConstraint.constant = height;
        [self.view setNeedsUpdateConstraints];
    }];
}

对于后一种基于约束的解决方案，要使用autolayout，我们必须首先注意以下几点：

通过单击此处按钮组中的中心按钮，然后选择添加高度约束，确保tableview具有高度约束：


然后为该约束添加一个
IBOutlet
：


确保您调整了其他约束，以便在以编程方式调整大小tableview时它们不会冲突。在我的示例中，tableview有一个尾随空间约束，该约束将其锁定在屏幕底部，因此我必须调整该约束，使其可以大于或等于某个值，并具有较低的优先级，而不是锁定在某个特定的大小上，以便tableview的高度和顶部控制一天：


您在这里对其他约束所做的操作将完全取决于您在tableview下方的屏幕上有哪些其他控件。和往常一样，处理约束有点尴尬，但它肯定会起作用，尽管您的具体情况完全取决于场景中的其他内容。但希望你能明白。总之，使用autolayout时，请确保将其他约束（如果有）调整为灵活，以适应不断变化的tableview高度

如您所见，如果您不使用autolayout，则通过编程方式调整tableview的高度要容易得多，但如果您使用autolayout，我将提供两种选择。
对于调整表格大小，我在tableview控制器中使用了此解决方案，它非常好：

[objectManager getObjectsAtPath:self.searchURLString
                         parameters:nil
                            success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
                                NSArray* results = [mappingResult array];
                                self.eventArray = results;
                                NSLog(@"Events number at first: %i", [self.eventArray count]);
                                CGRect newFrame = self.activityFeedTableView.frame;
                                newFrame.size.height = self.cellsHeight + 30.0;
                                self.activityFeedTableView.frame = newFrame;

                                self.cellsHeight = 0.0;

                            }
                            failure:^(RKObjectRequestOperation *operation, NSError *error) {
                                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error"
                                                                                message:[error localizedDescription]
                                                                               delegate:nil
                                                                      cancelButtonTitle:@"OK"
                                                                      otherButtonTitles:nil];
                                [alert show];
                                NSLog(@"Hit error: %@", error);
                            }];

调整大小的部分在一个方法中，但这里只是为了让您可以看到它。
现在我唯一的问题是在另一个视图控制器中调整滚动视图的大小，因为我不知道tableview何时完成调整。目前，我正在使用performSelector:afterDelay执行此操作，但这确实不是一个好方法。有什么想法吗？
Rob的解决方案非常好，唯一的一点是在他的
-（void）adjustHeightOfTableview
方法中调用

[self.view needsUpdateConstraints]

不执行任何操作，它只返回一个标志，而不是调用

[self.view setNeedsUpdateConstraints]

将产生所需的效果。
通过xib或故事板创建单元格。给它的出口的内容。
现在在CellForRowatineXpath中调用它。
如果您想根据注释的标签文本设置单元格高度。

因此，将您的注释设置为BL.numberOfLine=0

因此，将您的注释设置为BL.numberOfLine=0

然后在ViewDidLoad中

 self.table.estimatedRowHeight = 44.0 ;
self.table.rowHeight = UITableViewAutomaticDimension;

现在呢

-(float)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return UITableViewAutomaticDimension;}

我发现以编程方式添加约束比在情节提要中容易得多

    var leadingMargin = NSLayoutConstraint(item: self.tableView, attribute: NSLayoutAttribute.LeadingMargin, relatedBy: NSLayoutRelation.Equal, toItem: self.mView, attribute: NSLayoutAttribute.LeadingMargin, multiplier: 1, constant: 0.0)

    var trailingMargin = NSLayoutConstraint(item: self.tableView, attribute: NSLayoutAttribute.TrailingMargin, relatedBy: NSLayoutRelation.Equal, toItem: mView, attribute: NSLayoutAttribute.TrailingMargin, multiplier: 1, constant: 0.0)

    var height = NSLayoutConstraint(item: self.tableView, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: screenSize.height - 55)

    var bottom = NSLayoutConstraint(item: self.tableView, attribute: NSLayoutAttribute.BottomMargin, relatedBy: NSLayoutRelation.Equal, toItem: self.mView, attribute: NSLayoutAttribute.BottomMargin, multiplier: 1, constant: screenSize.height - 200)

    var top = NSLayoutConstraint(item: self.tableView, attribute: NSLayoutAttribute.TopMargin, relatedBy: NSLayoutRelation.Equal, toItem: self.mView, attribute: NSLayoutAttribute.TopMargin, multiplier: 1, constant: 250)

    self.view.addConstraint(leadingMargin)
    self.view.addConstraint(trailingMargin)
    self.view.addConstraint(height)
    self.view.addConstraint(bottom)
    self.view.addConstraint(top)

使用简单易用的代码

func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
        let myCell = tableView.dequeueReusableCellWithIdentifier("mannaCustumCell") as! CustomCell
        let heightForCell = myCell.bounds.size.height;

        return heightForCell;
    }

在ViewDidDisplay中只需一行代码，即可大大简化：

    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)

        tableViewHeightConstraint.constant = tableView.contentSize.height
    }

这里的很多答案都不符合表格的变化，或者过于复杂。当使用autolayout时，使用将正确设置
intrinsicContentSize
的
UITableView
子类是一个简单得多的解决方案。不需要高度限制等

class UIDynamicTableView: UITableView
{
    override var intrinsicContentSize: CGSize {
        self.layoutIfNeeded()
        return CGSize(width: UIViewNoIntrinsicMetric, height: self.contentSize.height)
    }

    override func reloadData() {
        super.reloadData()
        self.invalidateIntrinsicContentSize()
    }
} 

在界面生成器中将TableView的类设置为
UIDynamicTableView
，并观察神奇之处，因为调用
reloadData（）
后，此TableView将更改其大小。当然，如果您有权访问TableView、行数、行高度等。您只需执行[otherVC.TableView setFrame:cRectMake]（originX，originY，width，height）]；@Srikanth正确，但这仅在不使用自动布局的情况下有效。如果使用自动布局，则必须更改视图的约束。Alex，您是否使用自动布局（仅适用于effectiv）