Snail—UI学习之自定义键盘及键盘收起(待完善)

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在viewController.h中加入代理

#import <UIKit/UIKit.h>

@interface WJJRootViewController : UIViewController <span style="color:#FF0000;"><UITextFieldDelegate></span>

@end

viewController.m中代码展示

#import "WJJRootViewController.h"

@interface WJJRootViewController (){
    <span style="color:#FF0000;">UITextField * _textField;</span>
}

@end

@implementation WJJRootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor greenColor];
	// Do any additional setup after loading the view.
    _textField = [[UITextField alloc] initWithFrame:CGRectMake(40, 40, 240, 40)];
    _textField.borderStyle = UITextBorderStyleRoundedRect;
    _textField.placeholder = @"请输入:";
    _textField.clearButtonMode = UITextFieldViewModeAlways;
    _textField.keyboardType = UIKeyboardTypeDefault;
    _textField.returnKeyType = UIReturnKeyGo;
    
   <span style="color:#FF0000;"> //设置textField的代理 要让viewController为他收起键盘
    _textField.delegate = self;</span>
    
   /*
    //自定义键盘 可以看出来自定义键盘只与高度有关 其他不影响自定义键盘的位置大小
    UIView * keyboardView = [[UIView alloc] initWithFrame:CGRectMake(0, 1, 1, 100)];
    keyboardView.backgroundColor = [UIColor redColor];
    //把view赋值给inputView
    _textField.inputView = keyboardView;
    
    //设置二级键盘
    UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(1, 1, 320, 20)];
    label.text = @"男";
    label.backgroundColor = [UIColor grayColor];
    _textField.inputAccessoryView = label;
    */
    [self.view addSubview:_textField];
}

//方法标记位
#pragma mark UITextFieldDelagate
//下面的方法就是UITextFieldDelegate中常用的委托方法
 //文本框将要开始编辑时调用
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
    return YES;
}

//文本编辑开始的时候调用
- (void)textFieldDidBeginEditing:(UITextField *)textField{
    
}

//文本框将要结束编辑时调用
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField{
    return YES;
}

//文本框结束编辑时调用
- (void)textFieldDidEndEditing:(UITextField *)textField{
    
}

//当按下return键时调用的方法
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
    //让textField失去第一响应者 即收起键盘
    [textField resignFirstResponder];
    return YES;
}

//每个viewController都会有的触摸方法 点击空白处收起键盘
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
    //第一种方法
    //[_textField resignFirstResponder];
    //第二种方法  原理:编辑textField的时候相当于编辑viewController 所以设置
    //viewController结束编辑
    [self.view endEditing:YES];
    
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

效果图如下

Snail—UI学习之自定义键盘及键盘收起(待完善)

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原文地址：http://blog.csdn.net/qq1791422018/article/details/47028367