我想将一些数据从应用发送到另一个应用。我该怎么做？我不能使用iCloud。我看一下文档提供者，但我不明白如何使用它。
我下载了这个例子，但是当我运行它时，它需要iCloud。我没有开发者计划。
任何想法，我该如何解决？ （对不起我的英文）
答案 0 :(得分：1)
有一个UIDocumentInteractionController在iOS上共享文件的示例。 iOS旨在防止应用直接共享数据。因此，Apple提供的UIDocumentInteractionController是您应该用来模仿类似直接共享的东西。
-(void)shareOnInstagram:(UIImage*)image {
NSString *jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/image.igo"];
[[NSFileManager defaultManager] removeItemAtPath:jpgPath error:nil];
[UIImageJPEGRepresentation(image, 0.6) writeToFile:jpgPath atomically:YES];
NSURL *igImageHookFile = [NSURL fileURLWithPath:jpgPath];
self.dic = [self setupControllerWithURL:igImageHookFile usingDelegate:self];
self.dic.UTI = @"com.instagram.exclusivegram";
[self.dic presentOpenInMenuFromRect:CGRectMake(0, 0, 320, [UIScreen mainScreen].bounds.size.height) inView:self.view animated:YES];
}
- (UIDocumentInteractionController *) setupControllerWithURL: (NSURL*) fileURL usingDelegate: (id <UIDocumentInteractionControllerDelegate>) interactionDelegate {
UIDocumentInteractionController *interactionController = [UIDocumentInteractionController interactionControllerWithURL: fileURL];
interactionController.delegate = interactionDelegate;
return interactionController;
}
答案 1 :(得分：0)
服务器部分
#import <Foundation/Foundation.h>
@interface DataProviderServer : NSObject
- (void) startServer;
@end
#include <CoreFoundation/CoreFoundation.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <netdb.h>
#import "DataProviderServer.h"
#define SERVER_PORT 8080
@implementation DataProviderServer
- (void) startServer
{
CFSocketContext CTX = { 0, NULL, NULL, NULL, NULL };
CFSocketRef TCPServer = CFSocketCreate(
kCFAllocatorDefault,
PF_INET,
SOCK_STREAM,
IPPROTO_TCP,
kCFSocketAcceptCallBack, (CFSocketCallBack)AcceptCallBack, &CTX);
if (TCPServer == NULL)
{
NSLog(@"TCPServer = null");
return ;
}
int optval = 1;
setsockopt(CFSocketGetNative(TCPServer), SOL_SOCKET, SO_REUSEADDR,
(void *)&optval, sizeof(optval));
struct sockaddr_in sin;
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_port = htons(SERVER_PORT);
sin.sin_addr.s_addr= htonl(INADDR_ANY);
NSData *address = [ NSData dataWithBytes: &sin length: sizeof(sin) ];
if (CFSocketSetAddress(TCPServer, (CFDataRef) address) != kCFSocketSuccess)
{
NSLog(@"CFSocketSetAddress() failed");
CFRelease(TCPServer);
return ;
}
CFRunLoopSourceRef sourceRef =
CFSocketCreateRunLoopSource(kCFAllocatorDefault, TCPServer, 0);
CFRunLoopAddSource(CFRunLoopGetCurrent(), sourceRef, kCFRunLoopCommonModes);
CFRelease(sourceRef);
NSLog(@"Socket listening on port %d", SERVER_PORT);
CFRunLoopRun();
}
void AcceptCallBack(
CFSocketRef socket,
CFSocketCallBackType type,
CFDataRef address,
const void *data,
void *info)
{
CFReadStreamRef readStream = NULL;
CFWriteStreamRef writeStream = NULL;
CFIndex bytes;
UInt8 buffer[128];
UInt8 send_len = 0;
CFSocketNativeHandle sock = *(CFSocketNativeHandle *) data;
char * sendNumber = (char *)malloc(sizeof(char) * 128);
CFStreamCreatePairWithSocket(kCFAllocatorDefault, sock,
&readStream, &writeStream);
if (!readStream || !writeStream)
{
close(sock);
NSLog(@"CFStreamCreatePairWithSocket() failed");
free(sendNumber);
return;
}
CFReadStreamOpen(readStream);
CFWriteStreamOpen(writeStream);
unsigned count = 1;
while (YES)
{
count++;
sprintf(sendNumber, "%d", count);
strcat(sendNumber, "\r\n");
send_len = 0;
memset(buffer, 0, sizeof(buffer));
while (send_len < (strlen(sendNumber+1)))
{
if (CFWriteStreamCanAcceptBytes(writeStream))
{
bytes = CFWriteStreamWrite(writeStream,
(unsigned char *) sendNumber + send_len,
(strlen((sendNumber)+1) - send_len) );
if (bytes < 0)
{
NSLog(@"CFWriteStreamWrite() failed");
close(sock);
free(sendNumber);
return;
}
send_len += bytes;
}
}
sleep(1);
}
return;
}
@end
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
^{
self.server = [[DataProviderServer alloc] init];
[self.server startServer];
});
客户端部分
#import <Foundation/Foundation.h>
@interface DataRequesterClient : NSObject
- (void) sendMessage;
- (id) initWithDelegate: (id) delegate;
@end
#include <CoreFoundation/CoreFoundation.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <netdb.h>
#include <arpa/inet.h>
#import "DataRequesterClientDelegate.h"
#import "DataRequesterClient.h"
#define PORT 8080
static id <DataRequesterClientDelegate> delegateForSend; //TODO: global variable fixme
@interface DataRequesterClient ()
@end
@implementation DataRequesterClient
- (id) initWithDelegate: (id) delegate
{
self = [super init];
if(self)
{
delegateForSend = delegate;
}
return self;
}
- (void) sendMessage
{
CFSocketContext CTX = { 0, NULL, NULL, NULL, NULL };
CFSocketRef TCPClient = CFSocketCreate(NULL, PF_INET, SOCK_STREAM, IPPROTO_TCP,
kCFSocketConnectCallBack, (CFSocketCallBack)ConnectCallBack, &CTX);
if (TCPClient == NULL)
return ;
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_len = sizeof(addr);
addr.sin_family = AF_INET;
addr.sin_port = htons(PORT);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
CFDataRef connectAddr = CFDataCreate(NULL, (unsigned char *)&addr, sizeof(addr));
CFSocketConnectToAddress(TCPClient, connectAddr, -1);
CFRelease(connectAddr);
CFRunLoopSourceRef sourceRef = CFSocketCreateRunLoopSource(kCFAllocatorDefault, TCPClient, 0);
CFRunLoopAddSource(CFRunLoopGetCurrent(), sourceRef, kCFRunLoopCommonModes);
CFRelease(sourceRef);
CFRunLoopRun();
}
void ConnectCallBack(
CFSocketRef socket,
CFSocketCallBackType type,
CFDataRef address,
const void *data,
void * info )
{
UInt8 buffer[128];
CFSocketNativeHandle sock = CFSocketGetNative(socket);
while (YES)
{
memset(buffer, 0, sizeof(buffer));
recv(sock, buffer, sizeof(buffer), 0);
NSLog(@"Recieved:%s", buffer);
[delegateForSend didChangeString: [NSString stringWithUTF8String: (char *)buffer]];
}
}
@end
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
self.client = [[DataRequesterClient alloc] initWithDelegate: self];
[self.client sendMessage];
});