使用下面的代码,我可以在 tableview 中获取视频文件。但是我无法获取视频的路径,以便我将其保存并稍后使用它来播放。
- (void)viewDidLoad {
[super viewDidLoad];
[activity startAnimating];
assets = [[NSMutableArray alloc] init];
library = [[ALAssetsLibrary alloc] init];
UIImage *viewImage;
[library writeImageToSavedPhotosAlbum:[viewImage CGImage] orientation:(ALAssetOrientation)[viewImage imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){
if (error) {
NSLog(@"error");
} else {
NSLog(@"url %@", assetURL);
}
}];
[library enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop){
if (group != NULL) {
[group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop){
if ([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypeVideo]) {
NSLog(@"asset: %@", result);
[assets addObject:result];
}
}];
}
[self.tableview reloadData];
[self.activity stopAnimating];
[self.activity setHidden:YES];
}
failureBlock:^(NSError *error){
NSLog(@"failure"); }];
}
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [assets count];
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
ALAsset *asset = [assets objectAtIndex:indexPath.row];
[cell.imageView setImage:[UIImage imageWithCGImage:[asset thumbnail]]];
[cell.textLabel setText:[NSString stringWithFormat:@"Video %d", indexPath.row+1]];
return cell;
}
这是我的输出:
2012-07-19 12:37:42.135 mptest[17310:707] asset: ALAsset - Type:Video, URLs:{
"com.apple.quicktime-movie" = "assets-library://asset/asset.MOV?id=336068EA-C1B1-481C-82DA-F2419561A91A&ext=MOV";
}
2012-07-19 12:37:42.147 mptest[17310:707] asset: ALAsset - Type:Video, URLs:{
"com.apple.quicktime-movie" = "assets-library://asset/asset.MOV?id=A1CBDDE4-4BC1-48F2-84E0-028D7B7F4879&ext=MOV";
}
2012-07-19 12:37:42.156 mptest[17310:707] asset: ALAsset - Type:Video, URLs:{
"com.apple.quicktime-movie" = "assets-library://asset/asset.MOV?id=3D76ABC7-515C-42E7-A940-B149C78FBAB6&ext=MOV";
}
2012-07-19 12:37:42.262 mptest[17310:707] error
谁能帮我解决这个问题?