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textfiled中键盘弹不起来

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[待解决问题]

以下是代码

 

#import "ViewController.h"

#import "GCDAsyncSocket.h"

@interfaceViewController ()<GCDAsyncSocketDelegate,UITableViewDataSource,UITableViewDelegate,UITextFieldDelegate>

- (IBAction)connectToSocket:(id)sender;

- (IBAction)loginToSocket:(id)sender;

@property (weak, nonatomic) IBOutletUITableView *tableView;

@property (strong,nonatomic) GCDAsyncSocket *socket;

@property (weak, nonatomic) IBOutletNSLayoutConstraint *bottomHight;

@property (strong, nonatomic) NSMutableArray *message;

 

@end

 

@implementation ViewController

 

-(NSMutableArray *)message{

    if (_message == nil) {

        _message = [NSMutableArrayarray];

    }

    return_message;

}

 

- (void)viewDidLoad {

    [superviewDidLoad];

    [[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(keyWillShow:) name:UIKeyboardWillShowNotificationobject:nil];

    [[NSNotificationCenterdefaultCenter] addObserver:selfselector:@selector(keyWillDisappear:) name:UIKeyboardWillHideNotificationobject:nil];

    // Do any additional setup after loading the view, typically from a nib.

}

 

- (void)didReceiveMemoryWarning {

    [superdidReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

#pragma mark - 键盘弹起

- (void)keyWillShow:(NSNotification *)noti{

    NSLog(@"%@",noti.userInfo);

    CGFloat hight = [noti.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;

    self.bottomHight.constant = hight ;

    

}

 

#pragma mark - 键盘退回

- (void)keyWillDisappear:(NSNotification *)noti{

 

    self.bottomHight.constant = 0;

    

}

 

 

 

 

- (IBAction)connectToSocket:(id)sender {

    

    NSString *host = @"127.0.0.1";

    int port = 12345;

    

    

    self.socket = [[GCDAsyncSocketalloc] initWithDelegate:selfdelegateQueue:dispatch_get_global_queue(0, 0)];

    NSError *error = nil;

    [self.socketconnectToHost:host onPort:port error:&error];

    

    if (error) {

        NSLog(@"connectToHost:%@",error);

    }

    

    

    

}

 

- (IBAction)loginToSocket:(id)sender {

    

    NSString *loginStr = @"iam:zhangsan";

    [self.socketwriteData:[loginStr dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1tag:101];

    

    

}

 

 

#pragma mark -SocketDelegate

 

#pragma mark -连接成功

-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{

 

    NSLog(@"%s",__func__);

}

 

#pragma mark -连接失败

-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err{

 

    if (err) {

        NSLog(@"连接失败 ");

    }else{

        

        NSLog(@"正常断开");

    

    }

 

 

}

#pragma mark -发送数据

-(void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag{

    

    NSLog(@"发送成功%s",__func__);

    [sock readDataWithTimeout:-1tag:tag];

 

 

}

 

 

#pragma mark -读取数据 

-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{

    NSLog(@"%s",__func__);

    if (tag ==102) {

        NSString *receiver = [[NSStringalloc] initWithData:data encoding:NSUTF8StringEncoding];

        [self.messageaddObject:receiver];

        

        dispatch_async(dispatch_get_main_queue(), ^{

            [self.tableViewreloadData];

        });

        

        NSLog(@"%@",receiver);

 

    }

   

 

}

 

#pragma mark -tableViewDelegate

 

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

 

    returnself.message.count;

}

 

 

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    staticNSString *ID = @"SocketCell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

    cell.textLabel.text = self.message[indexPath.row];

 

    return cell;

 

}

 

#pragma mark - socrollDelegate

-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{

 

    [self.viewendEditing:YES];

 

}

 

#pragma mark -textFieldDelegate

 

-(BOOL)textFieldShouldReturn:(UITextField *)textField{

    

    NSString *txt = textField.text;

    if (txt.length ==0) {

        returnYES;

    }

    

    NSString *msg = [@"msg:"stringByAppendingString:txt];

    

    [self.socketwriteData:[msg dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1tag:102];

    

    returnYES;

}

 

- (void)dealloc{

 

    [[NSNotificationCenterdefaultCenter] removeObserver:self];

 

}

 

 

 

@end

SunwinQuan的主页 SunwinQuan | 菜鸟二级 | 园豆:202
提问于:2015-07-24 22:00
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所有回答(1)
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估计是代理没有正确设置.而且推荐用集成的设置键盘的方案比如这个IQKeyboardManager,我还是很常用的.

jprothwell | 园豆:214 (菜鸟二级) | 2016-11-07 16:22
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