NavigationController Right to Left in iOS

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离开以前
离开以前 2021-02-10 15:39

I am buiding a Right to Left navigation controller to support RTL Languages. After reading some posts in StackOverFlow Push ViewController from Right To Left with UINavigationCo

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  •  北荒
    北荒 (楼主)
    2021-02-10 16:08

    Inspired by the solutions from @locke I rewrote the code as follows:

    1- Define a UIViewController in the appdelegate called preViewController to hold the master view controller.

    2- To reference it in the view controllers use the:

    AppDelegate *appdelegate=(AppDelegate *)[[UIApplication sharedApplication] delegate];
    

    3- write the following masterviewcontroller as follows:

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
    {
        //create a mutable arry to hold the view controllers and copy the current list of navigation controllers
        //at this point there is only the current view controller in stack
    
        NSMutableArray *vcs =  [NSMutableArray arrayWithArray:self.navigationController.viewControllers];
    
        //create a detailed navigation controller
        DetailedViewController *DVC = [[DetailedViewController alloc]initWithNibName:@"DetailedViewController" bundle:nil];
    
        //create a shared variable enviroment to reference a global variable 
        AppDelegate *appdelegate=(AppDelegate *)[[UIApplication sharedApplication] delegate];
    
        //assign the current viewcontroller to the temporary view controller
        appdelegate.preViewController=[self.navigationController.viewControllers lastObject];
    
        //insert detailed view into the array vcs before the current viewcontroller
            if (![vcs containsObject:DVC]) {
            [vcs insertObject:DVC atIndex:[vcs count]-1];
         }
        // update the self.navigation with the new stack
        [self.navigationController setViewControllers:vcs animated:NO];
    
        // pop the  othernavigationcontroller from the navigation stack to fake a detailedview controller push 
         [self.navigationController popViewControllerAnimated:YES];
    }
    

    4 - Add a button to replace the default button and define an IBaction (backClicked) for the detailed view controller:

    - (IBAction)backClicked:(id)sender{
    AppDelegate *appdelegate=(AppDelegate *)[[UIApplication sharedApplication] delegate];
    //push the holder view controller to fake a pop back to the master view controller
    [self.navigationController pushViewController:appdelegate.preViewController animated:YES];
    }
    

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