iOS收键盘

添加通知

//开始编辑

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(beginediting:) name:UITextViewTextDidBeginEditingNotification object:nil];
    //停止编辑

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(endediting:) name:UITextViewTextDidEndEditingNotification object:nil];

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
//    [self.messageTV endEditing:YES];
    [self.messageTV resignFirstResponder];
}




-(void)beginediting:(NSNotification *)notification{
    
    NSLog(@"开始编辑");
    [UIView animateWithDuration:0.5 animations:^{
      
        self.view.frame = CGRectMake(0, -250, WG_WIDTH, WG_HEIGHT);
        
        self.topview.frame = CGRectMake(0, 250, WG_WIDTH, 64);
        self.TVBGLabel.text = @"";

    }];
    
    
}
-(void)endediting:(NSNotification *)notification{
    
    self.view.frame = CGRectMake(0, 0, WG_WIDTH, WG_HEIGHT);
    self.topview.frame = CGRectMake(0, 0, WG_WIDTH, 64);
    NSLog(@"停止编辑");
    
}

//释放通知
-(void)dealloc{
    
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    
}