从文档目录中删除视频的问题

Question

我正在尝试从文档目录中删除视频，但视频未删除。

以下是我尝试删除视频的方式：

//Delete Video
NSError *error = nil;
//NSData *videoData = [NSData dataWithContentsOfURL:self.finalURL];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *tempPath = [documentsDirectory stringByAppendingFormat:@"/vid1.mp4"];
[[NSFileManager defaultManager] removeItemAtPath: tempPath error: &error];
UIAlertView *removeSuccessFulAlert=[[UIAlertView alloc]initWithTitle:@"Congratulation:" message:@"Successfully removed" delegate:self cancelButtonTitle:@"Close" otherButtonTitles:nil];
[removeSuccessFulAlert show];

Answer 1

如果你在“removeItemAtPath”之后添加一行，可能会对你的问题有一个很好的暗示：

BOOL success = [[NSFileManager defaultManager] removeItemAtPath: tempPath error: &error];
if(!success)
{
    NSLog(@"error from removing item at path %@ is %@", 
        tempPath, [error localizedDescription]);   
} else {
    UIAlertView *removeSuccessFulAlert=[[UIAlertView alloc]initWithTitle:@"Congratulation:" message:@"Successfully removed" delegate:self cancelButtonTitle:@"Close" otherButtonTitles:nil];
   [removeSuccessFulAlert show];
}

Answer 2

请改为尝试：

NSString *tempPath = [documentsDirectory stringByAppendingPathComponent:@"vid1.mp4"];