Download E-books Pro iOS Table Views: for iPhone, iPad, and iPod touch PDF

By Tim Duckett

If you’re an iOS app developer, likelihood is you’ll be utilizing desk perspectives on your improvement tasks. desk perspectives are the bread and butter of iOS apps. With them, you could create every thing from the best of lists to completely tricked-out person interfaces. desk perspectives also are probably the most complicated parts present in UIKit. whereas utilizing them for dull commonplace consumer interfaces is kind of uncomplicated, customizing them can turn into fairly difficult.

Pro iOS desk Views takes a task-oriented concentration to aid you while enforcing custom-made desk perspectives. even though it delves deeply into the desk View API, you could regularly make a decision during which point of element you need to dive in. It’s aimed to be a good reference and customization cookbook while, necessary for novices in addition to intermediate builders.

  • Covers the full desk View API intensive
  • Covers customization and function subject matters intensive
  • Task-oriented reference with a number of degrees of element

Note: source code for this identify is presently to be had for obtain at: https://github.com/timd/Pro-iOS-TableViews

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Directory 7–7. placing the desk into Edit Mode -(IBAction)startTableEditMode:(id)sender { [self setEditing:YES animated:YES]; [editButton setTitle:@"Done" forState:UIControlStateNormal]; [editButton removeTarget:nil action:NULL  forControlEvents:UIControlEventAllEvents]; [editButton addTarget:self action:@selector(endTableEditMode:) forControlEvents:UIControlEventTouchUpInside]; } directory 7–8. Taking the desk out of Edit Mode -(IBAction)endTableEditMode:(id)sender { [self setEditing:NO animated:YES]; [editButton setTitle:@"Edit" forState:UIControlStateNormal]; [editButton removeTarget:nil action:NULL forControlEvents:UIControlEventAllEvents]; [editButton addTarget:self action:@selector(startTableEditMode:) forControlEvents:UIControlEventTouchUpInside]; } Controlling no matter if Rows will be Edited After the desk is in modifying mode, the desk view will then ask the information resource even if each one row will be editable. If the tableView:canEditRowAtIndexPath: strategy is carried out, this can be known as for every row in flip. directory 7–9 indicates the way you may well use this technique to avoid a selected part from being edited. directory 7–9. Controlling even if a bit or Row may be Edited -(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath: (NSIndexPath *)indexPath { if (indexPath. part == zero) { go back NO; 163 164 bankruptcy 7: choosing and modifying desk content material } go back sure; } If the tableView:canEditRowAtIndexPath: approach returns NO, the row won’t be indented. determine 7–12 indicates the impression of this. determine 7–12. fighting enhancing of a whole part If the tableView:canEditRowAtIndexPath: isn’t applied, the desk view assumes that every row may be edited. In impression, the default go back price is convinced. Controlling each one Row’s modifying type Having tested no matter if a row may be edited, the desk view then asks the delegate which modifying kind every one row should still use: -(UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath { CHAPTER 7: picking and modifying desk content material go back UITableViewCellEditingStyleDelete; } If the tableView:editingStyleForRowAtIndexPath: process is applied, it is going to go back one among 3 attainable suggestions:  UITableViewCellEditingStyleDelete: This explanations the deletion keep an eye on to be inserted on the left-hand finish of the mobilephone.  UITableViewCellEditingStyleInsert: This reasons the insertion keep an eye on to be inserted on the left finish of the cellphone.  UITableViewCellEditingStyleNone: a little unsurprisingly, this doesn't insert an modifying keep watch over. As with tableView:canEditRowAtIndexPath:, if the tableView:editingStyleFor RowAtIndexPath: isn’t applied, the tableView will think that each one cells should be deletable and go back UITableViewCellEditingStyleDelete because the default worth. putting extra rows is a bit more concerned, so we’ll conceal that later during this bankruptcy. facing Row Deletions If you’ve been following alongside to this point, your desk will appear like determine 7–13, with an Edit button, cells that show Delete controls while the desk is going into enhancing mode, and a Delete button that looks on the finish of the row whilst the Delete regulate is tapped.

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