Надеюсь, мой код может помочь вам, ребята. Это ужасно. Я думаю, что Apple должен открыть этот вид API.
Конечно, все NSLog () должны быть удалены. Это просто для демонстрации.
Элвин
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
// e.g.
NSString *tempFilePath = [(NSURL *)[info valueForKey:UIImagePickerControllerMediaURL] absoluteString];
NSLog(@"didFinishPickingMediaWithInfo: %@",tempFilePath);
// e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp/capture/capturedvideo.MOV
tempFilePath = [[tempFilePath substringFromIndex:16] retain];
NSLog(@"didFinishPickingMediaWithInfo: %@",tempFilePath);
NSLog(@"===Try to save video to camera roll.===");
NSLog(@"UIVideoAtPathIsCompatibleWithSavedPhotosAlbum: %@",UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(tempFilePath)? @"YES":@"NO");
// Check if the video file can be saved to camera roll.
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(tempFilePath)){
// YES. Copy it to the camera roll.
UISaveVideoAtPathToSavedPhotosAlbum(tempFilePath, self, @selector(video:didFinishSavingWithError:contextInfo:), tempFilePath);
}
[self dismissModalViewControllerAnimated:YES];
}
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(NSString *)contextInfo{
NSLog(@"didFinishSavingWithError--videoPath in camera roll:%@",videoPath);
NSLog(@"didFinishSavingWithError--videoPath in temp directory:%@",contextInfo);
// The thumbnail jpg should located in this directory.
NSString *thumbnailDirectory = [[contextInfo stringByDeletingLastPathComponent] stringByDeletingLastPathComponent];
// Debug info. list all files in the directory of the video file.
// e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp/capture
NSLog([contextInfo stringByDeletingLastPathComponent]);
NSLog([[[NSFileManager defaultManager] contentsOfDirectoryAtPath:[contextInfo stringByDeletingLastPathComponent] error:nil] description]);
// Debug info. list all files in the parent directory of the video file, i.e. the "~/tmp" directory.
// e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp
NSLog(thumbnailDirectory);
NSLog([[[NSFileManager defaultManager] contentsOfDirectoryAtPath:thumbnailDirectory error:nil] description]);
///////////////////
// Find the thumbnail for the video just recorded.
NSString *file,*latestFile;
NSDate *latestDate = [NSDate distantPast];
NSDirectoryEnumerator *dirEnum = [[NSFileManager defaultManager] enumeratorAtPath:[[contextInfo stringByDeletingLastPathComponent]stringByDeletingLastPathComponent]];
// Enumerate all files in the ~/tmp directory
while (file = [dirEnum nextObject]) {
// Only check files with jpg extension.
if ([[file pathExtension] isEqualToString: @"jpg"]) {
NSLog(@"***latestDate:%@",latestDate);
NSLog(@"***file name:%@",file);
NSLog(@"***NSFileSize:%@", [[dirEnum fileAttributes] valueForKey:@"NSFileSize"]);
NSLog(@"***NSFileModificationDate:%@", [[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"]);
// Check if current jpg file is the latest one.
if ([(NSDate *)[[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"] compare:latestDate] == NSOrderedDescending){
latestDate = [[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"];
latestFile = file;
NSLog(@"***latestFile changed:%@",latestFile);
}
}
}
// The thumbnail path.
latestFile = [NSTemporaryDirectory() stringByAppendingPathComponent:latestFile];
NSLog(@"****** The thumbnail file should be this one:%@",latestFile);
// Your code ...
// Your code ...
// Your code ...
}