我有两个 Cocoa 应用程序,一个将成为此 XPC 关系中的发送者,另一个将成为接收者。
In the applicationDidFinishLaunching
在发送方中,我首先打开第二个接收方应用程序
NSError* error = nil;
NSURL* url = [[NSBundle mainBundle] bundleURL];
url = [url URLByAppendingPathComponent:@"Contents" isDirectory:YES];
url = [url URLByAppendingPathComponent:@"MacOS" isDirectory:YES];
url = [url URLByAppendingPathComponent:@"TestXPCHelper.app" isDirectory:YES];
[[NSWorkspace sharedWorkspace] launchApplicationAtURL:url
options:NSWorkspaceLaunchWithoutActivation
configuration:[NSDictionary dictionary]
error:&error];
if ( error )
{
NSLog(@"launchApplicationAtURL:%@ error = %@", url, error);
[[NSAlert alertWithError:error] runModal];
}
然后我创建我的NSXPCConnection
assert([NSThread isMainThread]);
if (self.testConnection == nil) {
self.testConnection = [[NSXPCConnection alloc] initWithMachServiceName:NEVER_TRANSLATE(@"com.TechSmith.TestXPCHelper") options:NSXPCConnectionPrivileged];
self.testConnection.remoteObjectInterface = [NSXPCInterface interfaceWithProtocol:@protocol(TestXPCProtocol)];
self.testConnection.interruptionHandler = ^{
NSLog(@"Connection Terminated");
};
self.testConnection.invalidationHandler = ^{
self.testConnection.invalidationHandler = nil;
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
self.testConnection = nil;
}];
};
[self.testConnection resume];
}
然后我尝试通过连接发送消息(这里连接已经失效)
id<TestXPCProtocol> testRemoteObject= [self.testConnection remoteObjectProxy];
[testRemoteObject testXPCMethod2];
[[self.testConnection remoteObjectProxyWithErrorHandler:^(NSError * proxyError){
NSLog(@"%@", proxyError);
}] testXPCMethod:^(NSString* reply) {
NSLog(@"%@", reply);
}];
这是我的接收器应用程序的应用程序委托:
@interface AppDelegate () <NSXPCListenerDelegate, TestXPCProtocol>
@property (weak) IBOutlet NSWindow *window;
@property NSXPCListener *xpcListener;
@end
@implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Insert code here to initialize your application
NSLog(@"TESTING123");
self.xpcListener = [[NSXPCListener alloc] initWithMachServiceName:@"com.TechSmith.TestXPCHelper"];
self.xpcListener.delegate = self;
[self.xpcListener resume];
}
- (void)applicationDidBecomeActive:(NSNotification *)notification {
NSLog(@"ACTIVE234");
}
- (void)applicationWillTerminate:(NSNotification *)aNotification {
// Insert code here to tear down your application
}
- (void)run
{
NSLog(@"RUNNING");
// Tell the XPC listener to start processing requests.
[self.xpcListener resume];
// Run the run loop forever.
[[NSRunLoop currentRunLoop] run];
}
- (BOOL)listener:(NSXPCListener *)listener shouldAcceptNewConnection:(NSXPCConnection *)newConnection
{
NSLog(@"LISTENING");
assert(listener == self.xpcListener);
#pragma unused(listener)
assert(newConnection != nil);
newConnection.exportedInterface = [NSXPCInterface interfaceWithProtocol:@protocol(TestXPCProtocol)];
newConnection.exportedObject = self;
[newConnection resume];
return YES;
}
- (void)testXPCMethod:(void(^)(NSString * version))reply
{
NSLog(@"HEY");
reply(@"REPLY HERE");
}
- (void)testXPCMethod2
{
NSLog(@"TWO!");
}
这里是proxyError
当我尝试通过连接发送消息时:
错误域=NSCocoaErrorDomain代码=4099“与服务的连接
名为 com.TechSmith.TestXPCHelper 已失效。” UserInfo={NSDebugDescription=The
与名为 com.TechSmith.TestXPCHelper 的服务的连接已失效。}
所以我认为我的实例化做错了NSXPCConnection
。我找不到两个应用程序相互通信的好例子——它总是一个应用程序和一项服务。这就是我的问题吗?我需要在应用程序之间进行通信的服务吗?
有什么方法可以获取有关此连接失效原因的更多信息吗?这也会有很大帮助