我有视频网址，并想使用此URl将其从iPhone中删除 [英] I have video URL and want to delete it from the iPhone using this URl

问题描述

我已经创建了一个存储视频的应用，现在我想在用户单击删除"按钮时删除该视频.我正在使用AVFoundation录制视频.

I have created a app that stores video, now I want to remove that video when a user clicks a remove button. I am using AVFoundation for record video.

我的应用程序摄像头为我提供了这样的输出网址:

My app camera gives me an output URL like this:

file://localhost/private/var/mobile/Applications/4B2E02E5-3EE2-493E-8ECF-4B1DA29B9387/tmp/output.mov

我已经尝试过了，但是没有用:

I have tried this but it did not work:

- (void) removeFile:(NSURL *)fileURL
{

    NSString *filePath = [fileURL path];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    if ([fileManager fileExistsAtPath:filePath]) {
        NSLog(@"here it is : %@",fileURL);
        NSError *error;
        // Attempt to delete the file at filePath2
        if ([fileManager removeItemAtPath:filePath error:&error] != YES)
            NSLog(@"Unable to delete file: %@", [error localizedDescription]);

        // Show contents of Documents directory
        NSLog(@"Documents directory: %@",
              [fileManager contentsOfDirectoryAtPath:filePath error:&error]);
    }
}

编辑

   - (IBAction)videoWillDelete:(id)sender {

        NSString *strPath =  [NSHomeDirectory() stringByAppendingPathComponent:@"output.mov"];

        NSLog(@"file is:%@",strPath);

        if ([[NSFileManager defaultManager] isDeletableFileAtPath:strPath]==YES) {
            NSLog(@"file is deletebale");
        }else {
            NSLog(@"file is not deletebale");
        }

        NSError *error;
        if ([[NSFileManager defaultManager] isDeletableFileAtPath:strPath]) {

            BOOL success = [[NSFileManager defaultManager] removeItemAtPath:strPath error:&error];

            if (!success) {
                NSLog(@"Error removing file at path: %@", error.localizedDescription);
            }
        }

    }

我的日志文件具有:

2012-11-02 17:33:21.836 AVFoundationCam[1791:707] file is:/var/mobile/Applications/4B2E02E5-3EE2-493E-8ECF-4B1DA29B9387/output.mov

2012-11-02 17:33:21.838 AVFoundationCam[1791:707] file is not deletebale

此功能是我用来在iPhone中存储数据的功能:

This function is what I use to store data in the iPhone:

else {  
        ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
        [library writeVideoAtPathToSavedPhotosAlbum:outputFileURL
                                    completionBlock:^(NSURL *assetURL, NSError *error) {

                                        if (error) {
                                            if ([[self delegate] respondsToSelector:@selector(captureManager:didFailWithError:)]) {
                                                [[self delegate] captureManager:self didFailWithError:error];
                                            }                                           
                                        }

                                        if ([[UIDevice currentDevice] isMultitaskingSupported]) {
                                            [[UIApplication sharedApplication] endBackgroundTask:[self backgroundRecordingID]];
                                        }

                                        if ([[self delegate] respondsToSelector:@selector(captureManagerRecordingFinished:)]) {
                                            [[self delegate] captureManagerRecordingFinished:self];
                                        }
                                    }];
        //[library release];
    }
}

推荐答案

答案很简单， 您不能从文档目录中删除文件.其仅可读和可写.

answer is Simple, you cannot delete file from Document Directory. Its Readable and writeable only.

通过提供tmp目录的路径，然后出于保存目的，将其从tmp路径移至文档目录，可以实现您的目的.而已.

You can achieve your purpose by giving path for tmp directory , and then for saving purpose move it from the tmp path to document directory. Thats it.

这篇关于我有视频网址，并想使用此URl将其从iPhone中删除的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！