我有一个应用程序从web服务加载一些数据。一切工作都很好。iOS后台进程和AFNetworking
现在我想更新后台进程中的数据。写了这部分,我可以通过在Xcode中使用“模拟背景获取”调试过程来启动它。
我的问题是AFHTTPRequestOperation
中的块没有执行。我敢打赌,我不想在这里建立一个街区,但是
a)我想知道为什么它不会执行 - 我的猜测是,你不能在后台获取这样的街区。 b)我不知道如何不在这里使用块。
任何帮助将不胜感激。
- (void) callWebServiceUpdate {
//Delete tmpDatabase if it is there
NSFileManager *fileManager = [NSFileManager defaultManager];
BOOL success;
success = [fileManager fileExistsAtPath:self.tmpEmployeeDatabasePath];
if (success) {
[fileManager removeItemAtPath:self.tmpEmployeeDatabasePath error:nil];
}
//Write data to temp database
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager.requestSerializer setAuthorizationHeaderFieldWithUsername:@"USER" password:@"PASSWORD"];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
AFHTTPRequestOperation *operationNow = [manager GET: @"https://xxxxxxxxx/mobile/mobilede.nsf/restServices.xsp/LotusDirectoryPeople"
parameters: [self jsonDict]
success: ^(AFHTTPRequestOperation *operation, id responseObject)
{
NSMutableArray *employees = (NSMutableArray *)responseObject;
FMDatabase *db = [FMDatabase databaseWithPath:self.tmpEmployeeDatabaseName];
[db open];
for(NSDictionary *dict in employees)
{
BOOL success = [db executeUpdate:@"INSERT INTO tmpemployees (id,firstName,lastName,fullName,email) VALUES (?,?,?,?,?);",
[dict objectForKey:@"clockNumber"],
[dict objectForKey:@"firstName"],
[dict objectForKey:@"lastName"],
[dict objectForKey:@"fullName"],
[dict objectForKey:@"email"],
nil];
if (success) {} // Only to remove success error
}
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{NSLog(@"Error: %@", error);}
];
[operationNow start];
//Loop through the tmp db and see if we have a value to update or add
//id tmpDatabasePath = [(AppDelegate *)[[UIApplication sharedApplication] delegate] databasePath];
NSMutableArray *tmpEmployees;
tmpEmployees = [[NSMutableArray alloc] init];
FMDatabase *tmpDatabase = [FMDatabase databaseWithPath:self.tmpEmployeeDatabasePath];
[tmpDatabase open];
//id realDatabasePath = [(AppDelegate *)[[UIApplication sharedApplication] delegate] databasePath];
FMDatabase *realDatabase = [FMDatabase databaseWithPath:self.employeeDatabasePath];
[realDatabase open];
FMResultSet *results = [tmpDatabase executeQuery:@"SELECT * FROM employees"];
while([results next])
{
employee *thisEmployee = [employee new];
thisEmployee.firstName = [results stringForColumn:@"firstName"];
thisEmployee.lastName = [results stringForColumn:@"lastName"];
thisEmployee.fullName = [results stringForColumn:@"fullname"];
thisEmployee.city = [results stringForColumn:@"city"];
thisEmployee.ste = [results stringForColumn:@"state"];
thisEmployee.emailAddress = [results stringForColumn:@"email"];
NSString *tst = [results stringForColumn:@"id"];
thisEmployee.id = [NSNumber numberWithInt:[tst intValue]];
//See if we have a record
FMResultSet *results = [realDatabase executeQuery:@"SELECT * from db where id= ?",thisEmployee.id];
}
[tmpDatabase close];
}
======================================
的下面的海报是正确的。我加入这个代码:
NSURLSessionConfiguration *backgroundConfiguration = [NSURLSessionConfiguration backgroundSessionConfiguration:@"background"];
AFURLSessionManager *backgroundManager = [[AFURLSessionManager alloc] initWithSessionConfiguration:backgroundConfiguration];
不过,我不明白怎么我的JSON URL请求添加到AFURLSessionManager。
我想你是对的。我能够建立一个配置为在后台运行的FURLSessionManager,但我努力使我的代码符合上述新代码。我已经搜索了所有内容,但找不到一个例子,我相信这是一个例子。我将在上面发布我的代码。 –