How to embed a UITableView in a UIScrollview
i have a solution for you,
use only tableView is enough
make the "Preview View" as the HeaderView of your tableView
make the "Search Bar" as the Section Header View of your tableView
you can make it perfectly :)
UITableView within UIScrollView using autolayout
First of all, are those other views (siblings of the table view) strictly above and below the table view? If so, have you considered letting the table view scroll normally, and putting those outside views in the table view's header and footer views? Then you don't need the scroll view.
Second, you may want to read Technical Note TN2154: UIScrollView And Autolayout if you haven't already.
Third, given the information in that tech note, I can think of a few ways to do what you want. The cleanest is probably to create a subclass of UITableView
that implements the intrinsicContentSize
method. The implementation is trivial:
@implementation MyTableView
- (CGSize)intrinsicContentSize {
[self layoutIfNeeded]; // force my contentSize to be updated immediately
return CGSizeMake(UIViewNoIntrinsicMetric, self.contentSize.height);
}
@end
Then just let auto layout use the table view's intrinsic content size. Create the constraints between the subviews of the scroll view (including the table view) to lay them out, and make sure there are constraints to all four edges of the scroll view.
You probably need to send invalidateIntrinsicContentSize
to the table view at appropriate times (when you add or remove rows or change the heights of rows). You could probably just override the appropriate methods in MyTableView
to do that. E.g. do [self invalidateIntrinsicContentSize]
in -endUpdates
, -reloadData
, - insertRowsAtIndexPaths:withRowAnimation:
, etc.
Here's the result of my testing:
The scroll view has the light blue background. The red top label and the blue bottom label are siblings of the table view inside the scroll view.
Here's the complete source code for the view controller in my test. There's no xib file.
#import "ViewController.h"
#import "MyTableView.h"
@interface ViewController () <UITableViewDataSource, UITableViewDelegate>
@end
@implementation ViewController
- (void)loadView {
UIView *view = [[UIView alloc] init];
self.view = view;
UIScrollView *scrollView = [[UIScrollView alloc] init];
scrollView.translatesAutoresizingMaskIntoConstraints = NO;
scrollView.backgroundColor = [UIColor cyanColor];
[view addSubview:scrollView];
UILabel *topLabel = [[UILabel alloc] init];
topLabel.translatesAutoresizingMaskIntoConstraints = NO;
topLabel.text = @"Top Label";
topLabel.backgroundColor = [UIColor redColor];
[scrollView addSubview:topLabel];
UILabel *bottomLabel = [[UILabel alloc] init];
bottomLabel.translatesAutoresizingMaskIntoConstraints = NO;
bottomLabel.text = @"Bottom Label";
bottomLabel.backgroundColor = [UIColor blueColor];
[scrollView addSubview:bottomLabel];
UITableView *tableView = [[MyTableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
tableView.translatesAutoresizingMaskIntoConstraints = NO;
tableView.dataSource = self;
tableView.delegate = self;
[scrollView addSubview:tableView];
UILabel *footer = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 30)];
footer.backgroundColor = [UIColor greenColor];
footer.text = @"Footer";
tableView.tableFooterView = footer;
NSDictionary *views = NSDictionaryOfVariableBindings(
scrollView, topLabel, bottomLabel, tableView);
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"V:|[scrollView]|"
options:0 metrics:nil views:views]];
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:|[scrollView]|"
options:0 metrics:nil views:views]];
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"V:|[topLabel][tableView][bottomLabel]|"
options:0 metrics:nil views:views]];
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:|[topLabel]|"
options:0 metrics:nil views:views]];
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:|-8-[tableView]-8-|"
options:0 metrics:nil views:views]];
[view addConstraint:[NSLayoutConstraint
constraintWithItem:tableView attribute:NSLayoutAttributeWidth
relatedBy:NSLayoutRelationEqual
toItem:view attribute:NSLayoutAttributeWidth
multiplier:1 constant:-16]];
[view addConstraints:[NSLayoutConstraint
constraintsWithVisualFormat:@"H:|[bottomLabel]|"
options:0 metrics:nil views:views]];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 20;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"Cell"];
}
cell.textLabel.text = [NSString stringWithFormat:@"Row %d", indexPath.row];
return cell;
}
@end
How to use UITableView inside UIScrollView and receive a cell click?
Answer : Don't do this.
UITableview
is inherited from ----> UIScrollView : UIView : UIResponder : NSObject
Apple says :
Important: You should not embed UIWebView or UITableView objects in
UIScrollView objects. If you do so, unexpected behavior can result
because touch events for the two objects can be mixed up and wrongly
handled.
UITableView inside UIScrollView - Cell not clickable
Do the following thing:
yourView.clipToBounds = true
Now, if UITableView
does not appears means your UIView
is not same bigger to hold down UITableView
.
Make sure that your UIView
height is bigger to hold the contents in it and then try to tap on it.
Updated:
If you are using AutoLayout
, then do the following thing.
- Give the fix height to
UIView
- Take the outlet of height constraint of
UIView
Now, in
viewDidLayoutSubviews
change the constraint ofUIView
toUITableView
contentSize
height.self.heightConstraint = self.tableView.contentSize.height
Let me know, if this helps!
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