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#import "ViewController.h"
#import "GCDAsyncSocket.h"
@interface ViewController ()<UITextFieldDelegate,UITableViewDataSource,UITableViewDelegate,GCDAsyncSocketDelegate>{
GCDAsyncSocket *_socket;
}
@property (weak, nonatomic) IBOutletNSLayoutConstraint *inputViewConstraint;
@property (weak, nonatomic) IBOutletUITableView *tableView;
@property (nonatomic,strong)NSMutableArray *chatMsgs;//聊天消息数组
@end
@implementation ViewController
-(NSMutableArray *)chatMsgs{
if (!_chatMsgs) {
_chatMsgs = [NSMutableArrayarray];
}
return_chatMsgs;
}
- (void)viewDidLoad {
[superviewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// 2.收发数据
// 做一个聊天
// 1.用户登录
// 2.收发数据
// 监听键盘
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(kbFrmWillChange:)name:UIKeyboardWillChangeFrameNotificationobject:nil];
}
-(void)kbFrmWillChange:(NSNotification *)noti{
NSLog(@"%@",noti.userInfo);
// 获取窗口的高度
CGFloat windowH = [UIScreenmainScreen].bounds.size.height;
// 键盘结束的Frm
CGRect kbEndFrm = [noti.userInfo[UIKeyboardFrameEndUserInfoKey]CGRectValue];
// 获取键盘结束的y值
CGFloat kbEndY = kbEndFrm.origin.y;
self.inputViewConstraint.constant = windowH - kbEndY;
}
- (IBAction)connectToHost:(id)sender {
// 1.建立连接
NSString *host = @"127.0.0.1";
int port = 12345;
// 创建一个Socket对象
_socket = [[GCDAsyncSocketalloc]initWithDelegate:selfdelegateQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0)];
// 连接
NSError *error = nil;
[_socket connectToHost:hostonPort:porterror:&error];
if (error) {
NSLog(@"%@",error);
}
}
#pragma mark -AsyncSocket的代理
#pragma mark 连接主机成功
-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{
NSLog(@"连接主机成功");
}
#pragma mark 与主机断开连接
-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err{
if(err){
NSLog(@"断开连接 %@",err);
}
}
- (IBAction)loginBtnClick:(id)sender {
// 登录
// 发送用户名和密码
// 在这里做的时候，只发用户名，密码就不用发送
// 如果要登录，发送的数据格式为 "iam:zhangsan";
// 如果要发送聊天消息，数据格式为 "msg:did you have dinner";
//登录的指令
NSString *loginStr = @"iam:zhangsan";
//把Str转成NSData
NSData *data = [loginStrdataUsingEncoding:NSUTF8StringEncoding];
//[_outputStream write:data.bytes maxLength:data.length];
// 发送登录指令给服务
[_socketwriteData:datawithTimeout:-1tag:101];
}
#pragma mark 数据成功发送到服务器
-(void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag{
NSLog(@"数据成功发送到服务器");
//数据发送成功后，自己调用一下读取数据的方法，接着_socket才会调用下面的代理方法
[_socketreadDataWithTimeout:-1tag:tag];
}
#pragma mark 服务器有数据，会调用这个方法
-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
// 从服务器接收到的数据
NSString *recStr = [[NSStringalloc]initWithData:dataencoding:NSUTF8StringEncoding];
NSLog(@"%@ %ld %@",[NSThreadcurrentThread],tag, recStr);
if (tag == 102) {
//聊天返回的数据// 刷新表格
[self reloadDataWithText:recStr];
}
// }else if(tag == 101 ){//登录返回数据，不应该把数据添加到表格里
//
//
// }
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
NSString *text = textField.text;
NSLog(@"%@",text);
// 聊天信息
NSString *msgStr = [NSStringstringWithFormat:@"msg:%@",text];
//把Str转成NSData
NSData *data = [msgStrdataUsingEncoding:NSUTF8StringEncoding];
// 刷新表格
[selfreloadDataWithText:msgStr];
// 发送数据
[_socketwriteData:datawithTimeout:-1tag:102];
// 发送完数据，清空textField
textField.text = nil;
return YES;
}
-(void)reloadDataWithText:(NSString *)text{
[self.chatMsgsaddObject:text];
// UI刷新要主线程
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableViewreloadData];
// 数据多，应该往上滚动
NSIndexPath *lastPath = [NSIndexPathindexPathForRow:self.chatMsgs.count -1 inSection:0];
[self.tableViewscrollToRowAtIndexPath:lastPathatScrollPosition:UITableViewScrollPositionBottomanimated:YES];
});
}
#pragma mark 表格的数据源
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.chatMsgs.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *ID =@"Cell";
UITableViewCell *cell = [tableViewdequeueReusableCellWithIdentifier:ID];
cell.textLabel.text =self.chatMsgs[indexPath.row];
return cell;
}
-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
[self.viewendEditing:YES];
}
@end
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