Question

Here is the code that I wrote to play a video in my Xcode project. When I run the project it crashes on me. I get this reason: Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘* -[NSURL initFileURLWithPath:]: nil string parameter’

I’ve found a tutorial that works when I run it on the simulator.
I added my video to the project and updated the code accordingly. My video is in a m4v format just like the other video in the tutorial. When I run the app with my video it still crashes and gives me the same error. I took my video from quick time and exported it over to iTunes. What am I doing wrong?

.h file

#import <UIKit/UIKit.h>
#import <MediaPlayer/MediaPlayer.h>  

@interface BigBuckBunnyViewController : UIViewController {

}

-(IBAction)playMovie:(id)sender;

@end

.m file

#import "BigBuckBunnyViewController.h"

@implementation BigBuckBunnyViewController

-(IBAction)playMovie:(id)sender
{
UIButton *playButton = (UIButton *) sender; 

NSString *filepath   =   [[NSBundle mainBundle] pathForResource:@"ladder rack 1 4"  
ofType:@"m4v"];
NSURL    *fileURL    =   [NSURL fileURLWithPath:filepath];
MPMoviePlayerController *moviePlayerController = [[MPMoviePlayerController alloc] 
initWithContentURL:fileURL];

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(moviePlaybackComplete:)

name:MPMoviePlayerPlaybackDidFinishNotification

object:moviePlayerController];

[moviePlayerController.view setFrame:CGRectMake(playButton.frame.origin.x, 

playButton.frame.origin.y, 

playButton.frame.size.width, 

playButton.frame.size.height)];

[self.view addSubview:moviePlayerController.view];
//moviePlayerController.fullscreen = YES;

//moviePlayerController.scalingMode = MPMovieScalingModeFill;

[moviePlayerController play];
}

- (void)moviePlaybackComplete:(NSNotification *)notification
{
MPMoviePlayerController *moviePlayerController = [notification object];
[[NSNotificationCenter defaultCenter] removeObserver:self

name:MPMoviePlayerPlaybackDidFinishNotification

object:moviePlayerController];

[moviePlayerController.view removeFromSuperview];
[moviePlayerController release];
}

- (void)dealloc {
[super dealloc];
}

@end

Ok so I was able to create an html page and link the html page to my .m file in the view did load section. I created an UIWebview and added it to my xib view. I placed my video on a server. This is probably a better solution, less load time.

Answer 1

You are geting nil because the NSString *filepath = [[NSBundle mainBundle] pathForResource:@"ladder rack 1 4" ofType:@"m4v"]; contains spaces.
So you need to change it like:

NSURL   *fileURL    =   [NSURL fileURLWithPath:filepath] absoluteString];

Refer this link