my app freezes when i click send for videos

Question

import "cameraTableViewController.h"

import <MobileCoreServices/UTCoreTypes.h>

import <Parse/Parse.h>

@interface cameraTableViewController ()

@end

@implementation cameraTableViewController

(void)viewDidLoad { [super viewDidLoad]; self.imagepicker=[[UIImagePickerController alloc]init]; self.imagepicker.delegate=self; self.imagepicker.allowsEditing=NO;

self.recepiants=[[NSMutableArray alloc]init];

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {

self.imagepicker.sourceType=UIImagePickerControllerSourceTypeCamera; }

else { self.imagepicker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;

} self.freindsrelation=[[PFUser currentUser ]objectForKey:@"friendsrelation"];

self.imagepicker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:self.imagepicker.sourceType]; [self presentViewController:self.imagepicker animated:NO completion:nil];}

-(void)viewWillAppear:(BOOL)animated {

[super viewWillAppear:YES];


PFQuery *query=[self.freindsrelation query];
[query orderByAscending:@"username"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
    if (error) {
        UIAlertView *alertview=[[UIAlertView alloc] initWithTitle:@"Sorry" message:[error.userInfo objectForKey:@"erorr"] delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil, nil];
        [alertview show];
    }
    else
    {
        self.friends=objects;
        [self.tableView reloadData];


    }

}];
if (self.namedimage==nil &&[self.Video length]==0) {
    self.imagepicker.videoMaximumDuration=100;

    self.imagepicker=[[UIImagePickerController alloc]init];
    self.imagepicker.delegate=self;
    self.imagepicker.allowsEditing=NO;
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {


        self.imagepicker.sourceType=UIImagePickerControllerSourceTypeCamera;
    }
    else
    {
        self.imagepicker.sourceType=UIImagePickerControllerSourceTypePhotoLibrary;

    }
    NSLog(@"%@",self.Video);
    NSLog(@"%@",self.imagepicker);

    self.imagepicker.mediaTypes=[UIImagePickerController availableMediaTypesForSourceType:self.imagepicker.sourceType];
    [self presentViewController:self.imagepicker animated:NO completion:nil];
}

}

pragma mark - Table view data source

(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; }
(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

// Return the number of rows in the section. return [self.friends count]; }

pragma mark-image picker controller delegat

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

[self dismissViewControllerAnimated:NO completion:nil]; [self.tabBarController setSelectedIndex:0];

}

(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

PFUser *user=[self.friends objectAtIndex: indexPath.row]; cell.textLabel.text=user.username; if ([self.recepiants containsObject:user.objectId]) { cell.accessoryType=UITableViewCellAccessoryCheckmark; }

else { cell.accessoryType=UITableViewCellAccessoryNone;

}

return cell; }

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { NSString *mediatype=[info objectForKey:UIImagePickerControllerMediaType];

if ([mediatype isEqualToString:(NSString*)kUTTypeImage]) {
    self.namedimage=[info objectForKey:UIImagePickerControllerOriginalImage];
    if (self
        .imagepicker.sourceType==UIImagePickerControllerSourceTypeCamera) {
        UIImageWriteToSavedPhotosAlbum(self.namedimage, nil, nil, nil);
    }
    [self dismissViewControllerAnimated:YES completion:nil];
}
else
{
    //video
    self.Video=CFBridgingRelease([[info objectForKey: UIImagePickerControllerMediaURL]path]);
    if (self
        .imagepicker.sourceType==UIImagePickerControllerSourceTypeCamera) {
        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(self.Video)) {
               UISaveVideoAtPathToSavedPhotosAlbum(self.Video, self, nil, nil);
        }



    }  [self dismissViewControllerAnimated:YES completion:nil];


}

} -(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [self.tableView deselectRowAtIndexPath:indexPath animated:NO]; UITableViewCell *cell=[self.tableView cellForRowAtIndexPath:indexPath]; PFUser *user=[self.friends objectAtIndex:indexPath.row]; if (cell.accessoryType==UITableViewCellAccessoryNone) { cell.accessoryType=UITableViewCellAccessoryCheckmark; [self.recepiants addObject:user.objectId]; } else{ cell.accessoryType=UITableViewCellAccessoryNone; [self.recepiants removeObject:user.objectId]; } NSLog(@"%@",self.recepiants);

}

(IBAction)Cancel:(id)sender { self.namedimage=nil; self.Video=nil; [self.recepiants removeAllObjects]; [self.tabBarController setSelectedIndex:0];

}

(IBAction)Send:(id)sender { if (self.namedimage==nil&&[self.Video length]==0) { UIAlertView *alerview=[[UIAlertView alloc]initWithTitle:@"Try Again!" message:@"Please capture or select a photo or video to share" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil] ; [alerview show]; [self presentViewController:self.imagepicker animated:NO completion:nil]; } else { [self uploadmessage];
```
[self.tabBarController setSelectedIndex:0];
```
} } -(void)uploadmessage { NSData *filedata; NSString *filename; NSString *filetype;

if (self.namedimage!=nil) { UIImage *newimage=[self resizeimage:self.namedimage towidth:320.0f andHeight:480.0f]; filedata=UIImagePNGRepresentation(newimage); filename=@"image.png"; filetype=@"image";

} else { filedata=[NSData dataWithContentsOfFile:self.Video]; filename=@"video.mov"; filetype=@"video";

}

self.file=[PFFile fileWithName:filename data:filedata]; [self.file saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) { if (error) { UIAlertView *alerview=[[UIAlertView alloc]initWithTitle:@"Error!" message:@"Please try sending again" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil] ; [alerview show];
```
}

else{
    PFObject *message =[PFObject objectWithClassName:@"Messages"];
    [message setObject:self.file forKey:@"file"];
    [message setObject:filetype forKey:@"filytype"];
    [message setObject:self.recepiants forKey:@"recepiants"];
    [message setObject:[[PFUser currentUser]objectId] forKey:@"SenderId"];
    [message setObject:[[PFUser currentUser]username] forKey:@"SenderName"];
    [message saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
        if (error) {
            UIAlertView *alerview=[[UIAlertView alloc]initWithTitle:@"Error!" message:@"Please try sending again" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil] ;
            [alerview show];}
        else
        {

            self.namedimage=nil;
            self.Video=nil;
            [self.recepiants removeAllObjects];

        }
    }];

}
```
}];

} -(UIImage* )resizeimage:(UIImage *)image towidth:(float)width andHeight:(float)height { CGSize newSize=CGSizeMake(width, height); CGRect newrectangle=CGRectMake(0, 0, width, height); UIGraphicsBeginImageContext(newSize);

[image drawInRect:newrectangle];
UIImage *resizedimage=UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return resizedimage;

} @end

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