删除未完成下载的文件，如果下载被取消

Question

我下载与AFNetworking文件，使用此代码：

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:downloadFileUrl]]; 

AFHTTPRequestOperation * operation = [[AFHTTPRequestOperation alloc] initWithRequest:request]; 

NSArray * paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString * documentDirectory = [paths objectAtIndex:0]; 

NSString * targetFileName = [downloadFileUrl lastPathComponent]; 
NSString * targetPath = [documentDirectory stringByAppendingPathComponent:targetFileName]; 

operation.outputStream = [NSOutputStream outputStreamToFileAtPath:targetPath append:NO]; 

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) { 

    [[NSNotificationCenter defaultCenter] postNotificationName:@"DownloadDidSuccessNotification" object:nil]; 

} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 

    [[NSNotificationCenter defaultCenter] postNotificationName:@"DownloadDidFailedNotification" object:nil]; 

}]; 

[operation start]; 

我公司提供的选项用户取消下载，我做这个：

[operation cancel]; 

但是，未完成的下载文件仍保留在目录中。 请让我知道删除未完成的下载文件的解决方案。

Answer 1

试试这个代码。我没有检查。

[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) { 

    [[NSNotificationCenter defaultCenter] postNotificationName:@"DownloadDidSuccessNotification" object:nil]; 

} failure:^(AFHTTPRequestOperation *operation, NSError *error) { 
     NSFileManager *fileMgr = [NSFileManager defaultManager] ; 
     NSError *error = nil; 
    BOOL removeSuccess = [fileMgr removeItemAtPath:targetPath error:&error]; 
     if (!removeSuccess) { 
      // Error handling 
      ... 
     } 
    [[NSNotificationCenter defaultCenter] postNotificationName:@"DownloadDidFailedNotification" object:nil]; 

}]; 

Answer 2

试试这个删除的文件 -

NSArray *searchPaths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

NSString *documentFolderPath = [searchPaths objectAtIndex:0]; 
BOOL success=[[NSFileManager defaultManager] fileExistsAtPath: targetPath]; 
if (success) 
{ 
     BOOL deletedFile = [[NSFileManager defaultManager] removeItemAtPath: targetPath error:&error]; 
    if (deletedFile) 
     NSLog(@"File deleted"); 
    else 
     NSLog(@"Not able to delete File"); 
}