Display XIB erorr nil - ios

Question

I am new to Swift and I am beginning to learn XIB. I want to pressing the button appears XIB.
I using liberty ARSPopover
my error :
Warning: Attempt to present on
which is already
presenting (null)
How can I solve this problem?
My code for button :
- (IBAction)btnShoPopover:(UIBarButtonItem *)sender {
ARSPopover *popoverController = [ARSPopover new];
popoverController.sourceView = self.view;
popoverController.sourceRect = CGRectMake(370,0, 0, 0);
popoverController.contentSize = CGSizeMake(200,300);
popoverController.arrowDirection = UIPopoverArrowDirectionUp;
[self presentViewController:popoverController animated:YES completion:^{
[popoverController insertContentIntoPopover:^(ARSPopover *popover, CGSize popoverPresentedSize, CGFloat popoverArrowHeight) {
PopovViewController *poper = [[PopovViewController alloc] init];
[self presentViewController:poper animated:YES completion:nil];
}];
}];
}
I my xib don't download:
My code for xib controller:
#interface PopovViewController ()
#end
#implementation PopovViewController
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
My controller:
#import "ResourseTableViewController.h"
#import "ProbaViewController.h"
#interface ResourseTableViewController ()
#end
#implementation ResourseTableViewController
#synthesize arrayOriginal;
#synthesize arForTable;
- (void)viewDidLoad {
[super viewDidLoad];
NSDictionary *dTmp=[[NSDictionary alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"data" ofType:#"plist"]];
self.arrayOriginal=[dTmp valueForKey:#"Objects"];
self.arForTable=[[NSMutableArray alloc] init] ;
[self.arForTable addObjectsFromArray:self.arrayOriginal];
SWRevealViewController *revealViewController = self.revealViewController;
if ( revealViewController )
{
[self.sidebarButton setTarget: self.revealViewController];
[self.sidebarButton setAction: #selector( revealToggle: )];
[self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.arForTable count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ;
}
[cell setIndentationLevel:[[[self.arForTable objectAtIndex:indexPath.row] valueForKey:#"level"] intValue]];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
NSDictionary *d=[self.arForTable objectAtIndex:indexPath.row];
NSLog(#"Selected index data %#",d);
if([d valueForKey:#"Objects"]) {
NSArray *ar=[d valueForKey:#"Objects"];
BOOL isAlreadyInserted=NO;
for(NSDictionary *dInner in ar ){
NSInteger index=[self.arForTable indexOfObjectIdenticalTo:dInner];
isAlreadyInserted=(index>0 && index!=NSIntegerMax);
if(isAlreadyInserted) break;
}
if(isAlreadyInserted) {
[self miniMizeThisRows:ar];
} else {
NSUInteger count=indexPath.row+1;
NSMutableArray *arCells=[NSMutableArray array];
for(NSDictionary *dInner in ar ) {
[arCells addObject:[NSIndexPath indexPathForRow:count inSection:0]];
[self.arForTable insertObject:dInner atIndex:count++];
}
[tableView insertRowsAtIndexPaths:arCells withRowAnimation:UITableViewRowAnimationNone];
}
}
}
- (IBAction)btnPopover:(id)sender {
ARSPopover *popoverController = [ARSPopover new];
popoverController.sourceView = self.view;
popoverController.sourceRect = CGRectMake(370,0, 0, 0);
popoverController.contentSize = CGSizeMake(200,300);
popoverController.arrowDirection = UIPopoverArrowDirectionUp;
[self presentViewController:popoverController animated:NO completion:^{
[popoverController insertContentIntoPopover:^(ARSPopover *popover, CGSize popoverPresentedSize, CGFloat popoverArrowHeight) {
ProbaViewController *poper = [[ProbaViewController alloc] init];
CGFloat width = popoverPresentedSize.width;
CGFloat height = popoverPresentedSize.height - popoverArrowHeight;
poper.view.frame = CGRectMake(0, 0, width, height);
popover.view.layer.backgroundColor = [UIColor clearColor].CGColor;
[popover.view addSubview:poper.view];
}];
}];
}
-(void)miniMizeThisRows:(NSArray*)ar{
for(NSDictionary *dInner in ar ) {
NSUInteger indexToRemove=[self.arForTable indexOfObjectIdenticalTo:dInner];
NSArray *arInner=[dInner valueForKey:#"Objects"];
if(arInner && [arInner count]>0){
[self miniMizeThisRows:arInner];
}
if([self.arForTable indexOfObjectIdenticalTo:dInner]!=NSNotFound) {
[self.arForTable removeObjectIdenticalTo:dInner];
[self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:
[NSIndexPath indexPathForRow:indexToRemove inSection:0]
]
withRowAnimation:UITableViewRowAnimationNone];
}
}
}
#end

Answer 1

Skimming the docs, it looks like the library is very versatile with respect to what's presented in the popover. Your code provides a clue that you hope to present a custom view controller within it (a PopovViewController).
EDIT Let's find out first where the problem lies. If everything else is working properly, then this code should present a green box...
[self presentViewController:popoverController animated:YES completion:^{
[popoverController insertContentIntoPopover:^(ARSPopover *popover, CGSize popoverPresentedSize, CGFloat popoverArrowHeight) {
CGFloat width = popoverPresentedSize.width;
CGFloat height = popoverPresentedSize.height - popoverArrowHeight;
UIView *test = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, height)];
test.backgroundColor = [UIColor greenColor];
[popover.view addSubview:test];
}];
}];
If that works, we can proceed to discovering why your PopovViewController's view is causing trouble. (My guess is that it's presentation is triggering some other presentation animation that conflicts with the 3rd party library.
If you get a working green view with no warnings or errors, post the code for PopovViewController's viewDidLoad, viewWillAppear, ...didAppear, ...didLayout, etc.