OC学习67：键盘上添加工具条

前言

在实现项目中，我们在使用 UITextField/UITextView 时，往往需要唤起键盘进行文本输入，而在某些时候，我们需要在键盘上方添加一个工具条

添加工具条的方法

1. 自定义工具条视图

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UnlockToolV : UIView
// 忘记密码
@property (nonatomic,strong)UIButton * forgetBtn;
// 面容解锁
@property (nonatomic,strong)UIButton * faceUnlockBtn;
@end

NS_ASSUME_NONNULL_END

=================================================

#import "UnlockToolV.h"

@implementation UnlockToolV
- (instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if (self) {
        [self initUI];
        [self initMasonry];
    }
    return self;
}

// 初始化UI
- (void)initUI{
    self.backgroundColor = kWhiteColor;
    
    [self addSubview:self.forgetBtn];
    [self addSubview:self.faceUnlockBtn];
}

// 初始化Masonry
- (void)initMasonry{
    [self.forgetBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(20);
        make.centerY.mas_equalTo(0);
    }];
    
    CGFloat faceUnlockBtn_w = self.faceUnlockBtn.width;
    CGFloat faceUnlockBtn_h = self.faceUnlockBtn.height;
    [self.faceUnlockBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.mas_equalTo(-20);
        make.centerY.mas_equalTo(0);
        make.size.mas_equalTo(CGSizeMake(faceUnlockBtn_w, faceUnlockBtn_h));
    }];
}

#pragma mark -懒加载
- (UIButton *)forgetBtn{
    if (!_forgetBtn) {
        _forgetBtn = [UIButton initBtnWithFrame:CGRectZero bgColor:nil hidden:NO];
        [_forgetBtn setTitle:@"忘记密码" titleColor:kMainThemeColor font:12 isBlod:NO];
    }
    return _forgetBtn;
}
- (UIButton *)faceUnlockBtn{
    if (!_faceUnlockBtn) {
        _faceUnlockBtn = [UIButton initBtnWithFrame:CGRectMake(0, 0, 70, 20) bgColor:nil hidden:NO];
        [_faceUnlockBtn setTitle:@"面容解锁" titleColor:kMainThemeColor font:12 isBlod:NO];
        [_faceUnlockBtn setImg:@"unlock_face" selectedImg:nil isSelect:NO];
        [_faceUnlockBtn setStyle:BtnStyle_ImgLeft space:5];
    }
    return _faceUnlockBtn;
}

@end

2. 在需要设置的控件上设置

// 声明头文件
#import "UnlockToolV.h"

// 声明属性
@property (nonatomic,strong)UnlockToolV * toolV;

// 设置
[self.codeV.bottomTF setInputAccessoryView:self.toolV];

// 懒加载
- (UnlockToolV *)toolV{
    if (!_toolV) {
        _toolV = [[UnlockToolV alloc] initWithFrame:CGRectMake(0, 0, kScreenWidth, 44)];
    }
    return _toolV;
}