私は次のAcceptCallBack
メソッドを持っており、メソッドの実行中にUIActivityIndicatorを追加することを望んでいたため、[mvc performSelectorOnMainThread:@selector(invoke) withObject:nil waitUntilDone:YES];
。invoke
UIを変更する方法です。そして[mvc performSelectorOnMainThread:@selector(hide) withObject:nil waitUntilDone:YES];
、UIActivityIndicatorを削除するためのこの行があります。ただし、発生しているように見えるのは、invokeAcceptCallBack
は実行が終了したときにのみ呼び出されるということです。AcceptCallBack
とinvoke
は2つの異なるスレッドで実行されていないため、同時に実行できますか?
void AcceptCallBack(
CFSocketRef socket,
CFSocketCallBackType type,
CFDataRef address,
const void *data,
void *info)
{
NSLog(@"Start Receiving...");
MasterViewController* mvc = (__bridge MasterViewController*)info;
[mvc performSelectorOnMainThread:@selector(invoke) withObject:nil waitUntilDone:YES];
CFReadStreamRef readStream = NULL;
CFWriteStreamRef writeStream = NULL;
CFIndex bytes;
UInt8 buffer[8192];
UInt8 * fileData;
UInt8 recv_len = 0;
/* The native socket, used for various operations */
CFSocketNativeHandle sock = *(CFSocketNativeHandle *) data;
/* Create the read and write streams for the socket */
CFStreamCreatePairWithSocket(kCFAllocatorDefault, sock,
&readStream, &writeStream);
if (!readStream || !writeStream) {
close(sock);
fprintf(stderr, "CFStreamCreatePairWithSocket() failed\n");
return;
}
CFReadStreamOpen(readStream);
CFWriteStreamOpen(writeStream);
bool headerRead = false;
int dataWritten = 0;
NSMutableString* filename = NULL;
NSMutableString * header = [[NSMutableString alloc] init];
while (true) {
memset(buffer, 0, sizeof(buffer));
bytes = CFReadStreamRead(readStream, buffer, sizeof(buffer));
recv_len += bytes;
if (bytes < 0) {
fprintf(stderr, "CFReadStreamRead() failed: %d\n", (int)bytes);
close(sock);
return;
}
if (bytes == 0) {
break;
}
if (!headerRead) {
for (int b=0; b<bytes; b++) {
if (buffer[b] == '\n') {
headerRead = true;
NSLog(@"Header is: %@", header);
NSArray *listItems = [header componentsSeparatedByString:@":"];
filename = [[NSMutableString alloc] init];
[filename appendString:[listItems objectAtIndex:2]];
[filename replaceOccurrencesOfString:@"/" withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [filename length])];
fileData = (UInt8*)malloc(sizeof(UInt8) * [[listItems objectAtIndex:3] intValue]);
b++;
memcpy(fileData, buffer + b, bytes - b);
dataWritten = bytes - b;
break;
} else {
[header appendFormat:@"%c", buffer[b]];
}
}
} else {
memcpy(fileData + dataWritten, buffer, bytes);
dataWritten += bytes;
}
}
NSString* docFile = [NSTemporaryDirectory() stringByAppendingPathComponent:filename];
NSData * outputData = [[NSData alloc] initWithBytes:fileData length:dataWritten];
if ([outputData writeToFile:docFile atomically:false] == YES) {
NSLog(@"File received and successfully written out to file------------------------------");
MasterViewController * thing = (__bridge MasterViewController*)info;
[thing restClient:NULL loadedFile:docFile];
NSString *destDir = @"/Slide2Me/";
[[thing restClient] uploadFile:filename toPath:destDir
withParentRev:nil fromPath:docFile];
[mvc performSelectorOnMainThread:@selector(hide) withObject:nil waitUntilDone:YES];
} else {
NSLog(@"Failed to write received data to file");
}
}
編集
それで、私が望む結果を得るために私がやったことは、上記のすべてのコードを入れてdispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0)
、メインスレッドに加えたい変更をそのように挟むことです....
void AcceptCallBack(
CFSocketRef socket,
CFSocketCallBackType type,
CFDataRef address,
const void *data,
void *info)
{
NSLog(@"Start Receiving...");
MasterViewController* mvc = (__bridge MasterViewController*)info;
[mvc performSelectorOnMainThread:@selector(invoke) withObject:nil waitUntilDone:YES];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), ^{
[the code above];
});
[mvc performSelectorOnMainThread:@selector(hide) withObject:nil waitUntilDone:YES];
}