8
Tôi gặp sự cố với khung làm việc GameKit. Trong ứng dụng của tôi, tôi muốn gửi một văn bản hoặc một hình ảnh. Bây giờ, khi tôi gửi một hình ảnh từ UIImagePicker, nó hoạt động tốt. Khi tôi gửi văn bản, nó không hiển thị cùng một hình ảnh UIAlertView, không có hình ảnh. Đây là .h:iPhone - lỗi với hình ảnh và văn bản gửi qua bluetooth
#import <UIKit/UIKit.h>
#import <GameKit/GameKit.h>
@interface ViewController : UIViewController <GKPeerPickerControllerDelegate, GKSessionDelegate, UIActionSheetDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate> {
GKSession *currentSession;
IBOutlet UITextField *txtMessage;
IBOutlet UIButton *connect;
IBOutlet UIButton *disconnect;
GKPeerPickerController *picker;
UIImagePickerController *imgPicker;
BOOL isText;
UIImage *_image;
}
@property (nonatomic, retain) GKSession *currentSession;
@property (nonatomic, retain) UITextField *txtMessage;
@property (nonatomic, retain) UIButton *connect;
@property (nonatomic, retain) UIButton *disconnect;
-(IBAction) btnSend:(id) sender;
-(IBAction) btnConnect:(id) sender;
-(IBAction) btnDisconnect:(id) sender;
-(IBAction)chooseImageData:(id)sender;
@end
Và .m:
#import "ViewController.h"
#import <GameKit/GameKit.h>
@implementation ViewController
@synthesize currentSession;
@synthesize txtMessage;
@synthesize connect;
@synthesize disconnect;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad {
[connect setHidden:NO];
[disconnect setHidden:YES];
[super viewDidLoad];
}
- (void)peerPickerController:(GKPeerPickerController *)picker
didConnectPeer:(NSString *)peerID
toSession:(GKSession *) session {
self.currentSession = session;
session.delegate = self;
[session setDataReceiveHandler:self withContext:nil];
picker.delegate = nil;
[picker dismiss];
}
-(IBAction) btnConnect:(id) sender {
picker = [[GKPeerPickerController alloc] init];
picker.delegate = self;
picker.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
[connect setHidden:YES];
[disconnect setHidden:NO];
[picker show];
}
- (void)peerPickerControllerDidCancel:(GKPeerPickerController *)picker
{
picker.delegate = nil;
[connect setHidden:NO];
[disconnect setHidden:YES];
}
-(IBAction) btnDisconnect:(id) sender {
[self.currentSession disconnectFromAllPeers];
currentSession = nil;
[connect setHidden:NO];
[disconnect setHidden:YES];
}
- (void)session:(GKSession *)session
peer:(NSString *)peerID
didChangeState:(GKPeerConnectionState)state {
switch (state)
{
case GKPeerStateConnected:
NSLog(@"connected");
break;
case GKPeerStateDisconnected:
NSLog(@"disconnected");
currentSession = nil;
[connect setHidden:NO];
[disconnect setHidden:YES];
break;
}
}
- (void) mySendDataToPeers:(NSData *) data
{
if (currentSession)
[self.currentSession sendDataToAllPeers:data
withDataMode:GKSendDataReliable
error:nil];
}
- (void) mySendImageToPeers:(NSData *) data
{
if (currentSession)
[self.currentSession sendDataToAllPeers:data
withDataMode:GKSendDataReliable
error:nil];
}
-(IBAction) btnSend:(id) sender
{
//---convert an NSString object to NSData---
NSData* data;
NSString *str = [NSString stringWithString:txtMessage.text];
data = [str dataUsingEncoding: NSASCIIStringEncoding];
[self mySendDataToPeers:data];
}
- (void) receiveData:(NSData *)data
fromPeer:(NSString *)peer
inSession:(GKSession *)session
context:(void *)context {
//---convert the NSData to NSString---
if (isText) {
isText = YES;
NSString* str;
str = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Messaggio"
message:str
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
else
{
UIImage *tempSentImg = [UIImage imageWithData:data];
_image = tempSentImg;
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Immagine"
message:@"\n\n\n\n\n"
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
UIImageView *imageView = [[UIImageView alloc] initWithImage:_image];
CGFloat imageHeight = 100;
CGFloat imageWidth = imageHeight * _image.size.width/_image.size.height;
imageView.frame = CGRectMake(floor((284 - imageWidth)/2), 47, imageWidth, imageHeight);
[alert addSubview:imageView];
[alert show];
return;
}
}
-(IBAction)chooseImageData:(id)sender {
[self performSelector: @selector(dialogOtherAction)];
}
- (void)dialogOtherAction {
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil
delegate:self
cancelButtonTitle:NSLocalizedString(@"Annulla", @"")
destructiveButtonTitle:nil
otherButtonTitles:NSLocalizedString(@"Scegli dalla libreria", @""),
NSLocalizedString(@"Scatta una foto", @""),nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[actionSheet showInView:self.view];
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0)
{
imgPicker = [[UIImagePickerController alloc] init];
imgPicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imgPicker.allowsEditing = NO;
imgPicker.delegate = self;
[self presentModalViewController:imgPicker animated:YES];
}
else if (buttonIndex == 1)
{
imgPicker = [[UIImagePickerController alloc] init];
imgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imgPicker.delegate = self;
imgPicker.allowsEditing = NO;
[self presentModalViewController:imgPicker animated:YES];
}
}
-(void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
[actionSheet dismissWithClickedButtonIndex:0 animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)imgPicker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self dismissModalViewControllerAnimated:YES];
UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
[self performSelector: @selector(btnImageSend:) withObject: image afterDelay: 1.0];
}
-(IBAction) btnImageSend:(UIImage *)image
{
//---convert an NSString object to NSData---
NSData* data;
data = UIImagePNGRepresentation(image);
[self mySendImageToPeers:data];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
@end