在键盘上方添加 按钮，输入框等控件（不装大神纯代码）

本人也是看了一下 这个用view手写工具栏也是比较好用 适合初学者 纯代码简单

小编我就是看不惯网上的代码什么都是用的SB（拖拽），你那么厉害怎么不拖一个QQ出来呢。
絮叨完毕 干活

下面是完整代码
SDAutoLayout.h 是第三方常用屏幕适配

#import "toolController.h"
#import <SDAutoLayout.h>
@interface toolController ()
{
//    呼出键盘输入框
    UITextField * textfield;
//    键盘内输入框
    UITextField * textfield2;
    
    UIView * suspendView;
}

@end

@implementation toolController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
//    初始化输入框
    textfield = [[UITextField alloc]init];
    textfield.borderStyle = UITextBorderStyleRoundedRect;
    [self.view addSubview:textfield];
    
    textfield.sd_layout
    .topSpaceToView(self.view, 100)
    .leftSpaceToView(self.view , 20)
    .widthIs(200)
    .heightIs(40);

    UITapGestureRecognizer *tapgest = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapBackAction)];
    [self.view addGestureRecognizer:tapgest];

}
//点击屏幕回收键盘
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [self.view endEditing:YES];
}

- (void)viewWillAppear:(BOOL)animated {
    // 添加对键盘的监控
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillShow:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyBoardWillHide:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)tapBackAction {
    [self.view endEditing:YES];
}

- (void)keyBoardWillShow:(NSNotification *) note {
    // 获取用户信息
    NSDictionary *userInfo = [NSDictionary dictionaryWithDictionary:note.userInfo];
    // 获取键盘高度
    CGRect keyBoardBounds  = [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    CGFloat keyBoardHeight = keyBoardBounds.size.height;
    // 获取键盘动画时间
    CGFloat animationTime  = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
    
    // 定义好动作
    void (^animation)(void) = ^void(void) {
        suspendView.transform = CGAffineTransformMakeTranslation(0, - keyBoardHeight);
    };
    
    if (animationTime > 0) {
        [UIView animateWithDuration:animationTime animations:animation];
    } else {
        animation();
    }
    
}

- (void)keyBoardWillHide:(NSNotification *) note {
    // 获取用户信息
    NSDictionary *userInfo = [NSDictionary dictionaryWithDictionary:note.userInfo];
    // 获取键盘动画时间
    CGFloat animationTime  = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];
    
    // 定义好动作
    void (^animation)(void) = ^void(void) {
        suspendView.transform = CGAffineTransformIdentity;
    };
    
    if (animationTime > 0) {
        [UIView animateWithDuration:animationTime animations:animation];
    } else {
        animation();
    }
}

- (UIView *)inputAccessoryView
{
    
//    我在这里用的是SDAutoLayout屏幕适配方式，如果初学者不太熟悉的话可以用系统的方式来定义位置、
//    例如：
//    UIButton * btn =[[UIButton alloc]initWithFrame:CGRectMake(100, 200, 100, 50)];
//    [btn setTitle:@"例子" forState:UIControlStateNormal];
//    之后直接添加到键盘的view上就可以了
//    [containerView addSubview:btn];
    
    
//    创建的发送按钮 在inputAccessoryView方法中创建
    UIButton *button = [[UIButton alloc]init];
    [button setTitle:@"发送" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
    
//    自定义表情按钮
    UIButton * BQiamge = [[UIButton alloc]init];
    [BQiamge setImage:[UIImage imageNamed:@"表情"] forState:UIControlStateNormal];
    [BQiamge addTarget:self action:@selector(BQbtn:) forControlEvents:UIControlEventTouchUpInside];
    
//  键盘上方的view
    UIView *containerView = [UIView new];
    containerView.frame = CGRectMake(0, 0, 10, 45);
    containerView.backgroundColor = [UIColor whiteColor];
    [containerView addSubview:button];

    //    用SDAutoLayout来实现屏幕适配
    button.sd_layout
    .centerYEqualToView(containerView)
    .rightSpaceToView(containerView, 5)
    .widthIs(40)
    .heightIs(40);
    
//    键盘上方的输入框
    textfield2 = [[UITextField alloc]init];
    textfield2.borderStyle = UITextBorderStyleRoundedRect;
    
//    输入框设置圆角
    textfield2.layer.cornerRadius = 15;
    
    //将多余的部分切掉
    textfield2.layer.masksToBounds = YES;
    textfield2.placeholder = @"请输入....";
    textfield2.backgroundColor = [UIColor grayColor];
    [containerView addSubview:textfield2];

    //    键盘上方输入框适配
    textfield2.sd_layout
    .centerYEqualToView(containerView)
    .leftSpaceToView(self, 5)
    .widthIs(270)
    .heightIs(40);
    [containerView addSubview:BQiamge];
    
    //    表情按钮适配
    BQiamge.sd_layout
    .centerYEqualToView(containerView)
    .leftSpaceToView(textfield2, 15)
    .widthIs(30)
    .heightIs(30);
    
    
    return containerView;
}