ios - 无法将视频保存到照片库

Question

这是我的代码:

ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
NSURL *videoURL =[info objectForKey:UIImagePickerControllerMediaURL];

if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:videoURL]) {

    [library writeVideoAtPathToSavedPhotosAlbum:videoURL completionBlock:^(NSURL *assetURL, NSError *error) {
        if (error) {
            NSLog(@"error");
        } else {
            NSLog(@"video assetUrl is %@", assetURL);
        }
    }];
}
else NSLog(@"videoAtPath is not compatible with photos Album.");

videoURL 是 file:///private/var/mobile/Containers/Data/Application/B1F512EA-6D13-4DF1-86DB-F6166F0D533F/tmp/capture-T0x17511a30.tmp.pG4PbH/capturedvideo.MOV

将视频保存到已保存的相册时，我总是出错。这是返回消息:

Video /private/var/mobile/Containers/Data/Application/B1F512EA-6D13-4DF1-86DB-F6166F0D533F/tmp/capture-T0x17511a30.tmp.pG4PbH/capturedvideo.MOV cannot be saved to the saved photos album: Error Domain=NSURLErrorDomain Code=-1100 "The requested URL was not found on this server." UserInfo=0x1b3e5e40 {NSErrorFailingURLStringKey=file:///private/var/mobile/Containers/Data/Application/B1F512EA-6D13-4DF1-86DB-F6166F0D533F/tmp/capture-T0x17511a30.tmp.pG4PbH/capturedvideo.MOV, NSErrorFailingURLKey=file:///private/var/mobile/Containers/Data/Application/B1F512EA-6D13-4DF1-86DB-F6166F0D533F/tmp/capture-T0x17511a30.tmp.pG4PbH/capturedvideo.MOV, NSLocalizedDescription=The requested URL was not found on this server., NSUnderlyingError=0x1b2ce310 "The operation couldn’t be completed. No such file or directory", NSURL=file:///private/var/mobile/Containers/Data/Application/B1F512EA-6D13-4DF1-86DB-F6166F0D533F/tmp/capture-T0x17511a30.tmp.pG4PbH/capturedvideo.MOV}

Answer 1

错误消息表明您的文件不存在，因此可能性是:

1. 文件地址不正确，您可以通过查看应用程序的沙箱来检查视频文件是否物理存在。如果存在，检查视频是否有效且可播放。无效视频将被拒绝保存到相册。

2. 或者您的捕获模块没有工作，所以您希望在目录中写入一些文件，但由于捕获失败而没有发生。