iOS-如何在TableViewController中设置TableView的宽度？

Question

using a TableViewController, how can I resize the length of the cells within it?

As you can see, the length of the cells is extended to the entire display. How can I reduce it?

Answer 1

Try this:

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:YES]
    [self.tableView setFrame:CGRectMake(x, y, width, height)];
}

Answer 2

try this

Chanage the frame in viewWillAppear

- (void)viewWillAppear:(BOOL)animated
{
     self.view.frame = CGRectMake(0, 0, 200, 200);
    [super viewWillAppear:animated];
}

or change in

Called to notify the view controller that its view is about to layout its subviews.When a view's bounds change, the view adjusts the position of its subviews.

So instead of doing it in view will appear,over ride the willLayoutSubviews :

-(void)viewWillLayoutSubviews{

    [super viewWillLayoutSubviews];

      self.view.frame = CGRectMake(0, 0, 200, 200);

}

or efficient way

- (void)viewDidAppear:(BOOL)animated
{
 [super viewDidAppear:YES]
[self.tableView setFrame:CGRectMake(x, y, 200, 200)];
}

swift3

Change the frame in viewWillAppear

override func viewWillAppear(_ animated: Bool) {
self.view.frame = CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(200), height: CGFloat(200))
super.viewWillAppear(animated)
}

or change in

Called to notify the view controller that its view is about to layout its subviews.When a view's bounds change, the view adjusts the position of its subviews.

So instead of doing it in view will appear,over ride the willLayoutSubviews :

override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
self.view.frame = CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(200), height: CGFloat(200))
}

or efficient way

override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true)
self.tableView.frame = CGRect(x: CGFloat(x), y: CGFloat(y), width: CGFloat(200), height: CGFloat(200))
}

Answer 3

Why do you need to change the width?

• If you want to put another view at the table view left or right, try UISplitviewController.
• if you want the cell margins inside table view, I would suggest to subclass UITableViewCell and set the width in the following way:

class MyTableViewCell: UITableViewCell {
    override func layoutSubviews() {
        super.layoutSubviews()
        self.frame.size.width = 200
    }
}