AFNetworking NSData - 不兼容的块指针类型发送
AFNetworking NSData - Incompatible block pointer types sending
我正在尝试重做一些代码以使用 AFNetworking。我有下面这个方法:
-(NSArray *)GetTableDataOfPhase:(NSString *)phase
{
NSString *phaseRequestString = [NSString stringWithFormat:@"%@?jobNo=%@",kIP,phase];
NSURL *JSONURL = [NSURL URLWithString:phaseRequestString];
NSURLResponse* response = nil;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL];
NSData* data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
if(data == nil)
return nil;
NSError *myError;
NSArray *tableArray = [[NSArray alloc]initWithArray:[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&myError]];
return tableArray;
}
现在我正试图改变它,所以它仍然是 returns 一个数组,我试过这样做:
-(NSArray *)GetTableDataOfPhase:(NSString *)phase
{
NSString *phaseRequestString = [NSString stringWithFormat:@"%@?jobNo=%@",kIP,phase];
NSURL *JSONURL = [NSURL URLWithString:phaseRequestString];
NSURLResponse* response = nil;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL];
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSData* data = [NSURLConnection sendSynchronousRequest:responseObject returningResponse:&response error:nil];
if(data == nil)
return nil;
NSError *myError;
NSArray *tableArray = [[NSArray alloc]initWithArray:[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&myError]];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
[operation start];
return tableArray;
}
但是我得到了这个错误:
/Users/jamessuske/Documents/My Programs/SSiPad(Device Only)ios7/SchedulingiPadApplication/Classes/LHJSonData.m:168:46: Incompatible block pointer types sending 'void *(^)(AFHTTPRequestOperation *, id)' to parameter of type 'void (^)(AFHTTPRequestOperation *, id)'
和这个警告:
/Users/jamessuske/Documents/My Programs/SSiPad(Device Only)ios7/SchedulingiPadApplication/Classes/LHJSonData.m:170:97: Sending 'NSURLResponse *const *' to parameter of type 'NSURLResponse **' discards qualifiers
我是这样称呼它的:
- (void)GetRequest
{
//refresh table view
[dataSource.editedCellHolder removeAllObjects];
[dataSource.cellHolder removeAllObjects];
[dataSource.cellHolderDisplay removeAllObjects];
NSArray *tableData = [dataSource.areaData GetTableDataOfPhase:[NSString stringWithFormat:@"%@%@",areaPickerSelectionString,unitPickerSelectionString]];
if(tableData == nil)
[self CustomAlert:@"Data was not recieved from the server, please check internet/VPN settings, Or contact Software Vendor for assistance."];
[dataSource PopulateTableData:tableData];
[indicatorView stopAnimating];
[indicatorView removeFromSuperview];
[loadingView removeFromSuperview];
loadingView = nil;
indicatorView =nil;
[NSTimer scheduledTimerWithTimeInterval:0.2f target:self selector:@selector(DisplayTable) userInfo:nil repeats:NO];
}
几件事:
使用 AFNetworking,您应该完全失去 NSURLConnection
请求。
同样,默认的 responseSerializer
会为您进行 JSON 解析,因此您可以丢失 NSJSONSerialization
解析。 AFNetworking 会为您完成所有这些工作。
同样,不要手动构建 URL 参数,而是再次让 AFNetworking 为您完成。默认情况下,AFNetworking 使用 requestSerializer
来为您构建请求。
您的旧方法 运行 同步,这通常是个坏主意。相反,您应该使用异步模式(例如 completionHandler
块)。
所以,将所有这些放在一起,它可能看起来像:
- (void)getTableDataOfPhase:(NSString *)phase completionHandler:(void (^)(NSArray *resultsObject, NSError *error))completionHandler
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"jobNo" : phase};
[manager GET:kIP parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
completionHandler(responseObject, nil);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
completionHandler(nil, error);
}];
}
你会这样称呼它:
[self getTableDataOfPhase:@"..." completionHandler:^(NSArray *resultsObject, NSError *error) {
if (resultsObject) {
// use NSArray here
} else {
NSLog(@"error = %@", error);
}
}];
// but don't try to use the `resultsObject` array here!
我正在尝试重做一些代码以使用 AFNetworking。我有下面这个方法:
-(NSArray *)GetTableDataOfPhase:(NSString *)phase
{
NSString *phaseRequestString = [NSString stringWithFormat:@"%@?jobNo=%@",kIP,phase];
NSURL *JSONURL = [NSURL URLWithString:phaseRequestString];
NSURLResponse* response = nil;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL];
NSData* data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];
if(data == nil)
return nil;
NSError *myError;
NSArray *tableArray = [[NSArray alloc]initWithArray:[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&myError]];
return tableArray;
}
现在我正试图改变它,所以它仍然是 returns 一个数组,我试过这样做:
-(NSArray *)GetTableDataOfPhase:(NSString *)phase
{
NSString *phaseRequestString = [NSString stringWithFormat:@"%@?jobNo=%@",kIP,phase];
NSURL *JSONURL = [NSURL URLWithString:phaseRequestString];
NSURLResponse* response = nil;
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL];
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSData* data = [NSURLConnection sendSynchronousRequest:responseObject returningResponse:&response error:nil];
if(data == nil)
return nil;
NSError *myError;
NSArray *tableArray = [[NSArray alloc]initWithArray:[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&myError]];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
[operation start];
return tableArray;
}
但是我得到了这个错误:
/Users/jamessuske/Documents/My Programs/SSiPad(Device Only)ios7/SchedulingiPadApplication/Classes/LHJSonData.m:168:46: Incompatible block pointer types sending 'void *(^)(AFHTTPRequestOperation *, id)' to parameter of type 'void (^)(AFHTTPRequestOperation *, id)'
和这个警告:
/Users/jamessuske/Documents/My Programs/SSiPad(Device Only)ios7/SchedulingiPadApplication/Classes/LHJSonData.m:170:97: Sending 'NSURLResponse *const *' to parameter of type 'NSURLResponse **' discards qualifiers
我是这样称呼它的:
- (void)GetRequest
{
//refresh table view
[dataSource.editedCellHolder removeAllObjects];
[dataSource.cellHolder removeAllObjects];
[dataSource.cellHolderDisplay removeAllObjects];
NSArray *tableData = [dataSource.areaData GetTableDataOfPhase:[NSString stringWithFormat:@"%@%@",areaPickerSelectionString,unitPickerSelectionString]];
if(tableData == nil)
[self CustomAlert:@"Data was not recieved from the server, please check internet/VPN settings, Or contact Software Vendor for assistance."];
[dataSource PopulateTableData:tableData];
[indicatorView stopAnimating];
[indicatorView removeFromSuperview];
[loadingView removeFromSuperview];
loadingView = nil;
indicatorView =nil;
[NSTimer scheduledTimerWithTimeInterval:0.2f target:self selector:@selector(DisplayTable) userInfo:nil repeats:NO];
}
几件事:
使用 AFNetworking,您应该完全失去
NSURLConnection
请求。同样,默认的
responseSerializer
会为您进行 JSON 解析,因此您可以丢失NSJSONSerialization
解析。 AFNetworking 会为您完成所有这些工作。同样,不要手动构建 URL 参数,而是再次让 AFNetworking 为您完成。默认情况下,AFNetworking 使用
requestSerializer
来为您构建请求。您的旧方法 运行 同步,这通常是个坏主意。相反,您应该使用异步模式(例如
completionHandler
块)。
所以,将所有这些放在一起,它可能看起来像:
- (void)getTableDataOfPhase:(NSString *)phase completionHandler:(void (^)(NSArray *resultsObject, NSError *error))completionHandler
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"jobNo" : phase};
[manager GET:kIP parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
completionHandler(responseObject, nil);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
completionHandler(nil, error);
}];
}
你会这样称呼它:
[self getTableDataOfPhase:@"..." completionHandler:^(NSArray *resultsObject, NSError *error) {
if (resultsObject) {
// use NSArray here
} else {
NSLog(@"error = %@", error);
}
}];
// but don't try to use the `resultsObject` array here!