[IOS]列表选择以及键盘遮挡输入框问题

2024-08-20 23:38
文章标签 问题 选择 键盘 列表 ios 输入框 遮挡

本文主要是介绍[IOS]列表选择以及键盘遮挡输入框问题，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

[IOS]列表选择以及键盘遮挡输入框问题


DOMO：http://download.csdn.net/detail/u012881779/8716639

没有仔细验证，domo里面应该会存在逻辑问题。

关于键盘遮挡问题，这里先分享一个最简单的办法：

1、把所有UITextField放到一个固定高度的UIView上面；

2、将上面的UIView放入一个UIScollView里面，并对这个UIScrollView在Xib上进行适配;

3、在代码中设置ScollView的ContentSize： 

[UIScollView setContentSize:CGSizeMake(UIScollView.frame.size.width, UIView.frame.size.height+240)];
这样需要填那个项目就自个滚去...



DOMO里的方法

控制器部分：

#import "QuestionProblemVC.h"
#import "QuestionTableView.h"@interface QuestionProblemVC ()< UIAlertViewDelegate , UITextFieldDelegate , UITextViewDelegate>
@property (weak, nonatomic) IBOutlet UIButton    *boyBut;           //男
@property (weak, nonatomic) IBOutlet UIButton    *girlBut;          //女
@property (weak, nonatomic) IBOutlet UITextField *ageText;          //年龄
@property (weak, nonatomic) IBOutlet UITextField *categoryText;     //类别
@property (weak, nonatomic) IBOutlet UIButton    *ageDownBut;       //年龄下拉
@property (weak, nonatomic) IBOutlet UIButton    *categoryDownBut;  //类别下拉
@property (weak, nonatomic) IBOutlet UIButton    *ageTapBut;        //年龄点击
@property (weak, nonatomic) IBOutlet UIButton    *categoryTapBut;   //类别点击
@property (weak, nonatomic) IBOutlet UITextView  *questionText;     //问题
@property (weak, nonatomic) IBOutlet UITextField *nameText;         //姓名
@property (weak, nonatomic) IBOutlet UITextField *phoneText;        //联系方式
@property (weak, nonatomic) IBOutlet UIView      *backImgV;
@property (strong, nonatomic) IBOutlet UIView    *lineView;
@property (strong, nonatomic)QuestionTableView   *questionTV;       //选择列表
@property (nonatomic) NSInteger sexInt; //性别@end@implementation QuestionProblemVC
@synthesize sexInt = _sexInt;
@synthesize questionTV = _questionTV;- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{[self.view endEditing:YES];//隐藏选择列表[self hidenTableView];[self reductionAction];
}- (void)viewDidLoad {[super viewDidLoad];[_questionText.layer setCornerRadius:3];[_questionText.layer setBorderWidth:1];[_questionText.layer setBorderColor:[[UIColor colorWithRed:225/255.0 green:225/255.0 blue:225/255.0 alpha:1] CGColor]];_ageDownBut.selected = YES;_categoryDownBut.selected = YES;//点击男[self boyTapAction:nil];//通知[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(selectAgeAndCategory:) name:@"selectAgeAndCategory" object:nil];
}//判断字符串不全为空
-(BOOL)judgeStringIsNull:(NSString *)string{BOOL result = NO;if(string != nil && string.length > 0){for (int i = 0; i < string.length; i ++) {NSString *subStr = [string substringWithRange:NSMakeRange(i, 1)];if(![subStr isEqualToString:@" "] && ![subStr isEqualToString:@""]){result = YES;}}}return result;
}//确定
- (IBAction)sureAction:(id)sender {[self.view endEditing:YES];NSString *sexTemp = @"";if(_sexInt == 1){sexTemp = @"男";}else if(_sexInt == 2){sexTemp = @"女";}BOOL result = YES;if(![self judgeStringIsNull:_ageText.text] && result){result = NO;}if(![self judgeStringIsNull:_categoryText.text] && result){result = NO;}if(![self judgeStringIsNull:_questionText.text] && result){result = NO;}if(![self judgeStringIsNull:_nameText.text] && result){result = NO;}if(![self judgeStringIsNull:_phoneText.text] && result){result = NO;}if(result){UIAlertView *alertv = [[UIAlertView alloc] initWithTitle:nil message:@"输入完成" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];alertv.tag = 220;[alertv show];}else{UIAlertView *alertv = [[UIAlertView alloc] initWithTitle:nil message:@"请输入完整信息" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];[alertv show];}
}//点击男
- (IBAction)boyTapAction:(id)sender {_sexInt = 1;[_boyBut setImage:[UIImage imageNamed:@"选择.png"] forState:UIControlStateNormal];[_girlBut setImage:[UIImage imageNamed:@"未选择.png"] forState:UIControlStateNormal];
}//点击女
- (IBAction)grilTapAction:(id)sender {_sexInt = 2;[_boyBut setImage:[UIImage imageNamed:@"未选择.png"] forState:UIControlStateNormal];[_girlBut setImage:[UIImage imageNamed:@"选择.png"] forState:UIControlStateNormal];
}//年龄点击
- (IBAction)ageTapAction:(id)sender {[self.view endEditing:YES];_categoryDownBut.selected = YES;[_categoryDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];if(_ageDownBut.isSelected){_ageDownBut.selected = NO;[_ageDownBut setImage:[UIImage imageNamed:@"上拉按钮.png"] forState:UIControlStateNormal];[self tableVeiwMark:1 andView:_ageText];}else{_ageDownBut.selected = YES;[_ageDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];[self hidenTableView];}
}//类别点击
- (IBAction)categoryTapAction:(id)sender {[self.view endEditing:YES];_ageDownBut.selected = YES;[_ageDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];if(_categoryDownBut.isSelected){_categoryDownBut.selected = NO;[_categoryDownBut setImage:[UIImage imageNamed:@"上拉按钮.png"] forState:UIControlStateNormal];[self tableVeiwMark:2 andView:_categoryText];}else{_categoryDownBut.selected = YES;[_categoryDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];[self hidenTableView];}
}//选择列表
- (void)tableVeiwMark:(NSInteger)mark andView:(UIView *)theView{[_questionTV.view removeFromSuperview];_questionTV = nil;if(!_questionTV){_questionTV = [[QuestionTableView alloc] initWithNibName:@"QuestionTableView" bundle:nil];}_questionTV.markInt = mark;CGRect ageTextRect = theView.frame;ageTextRect.origin.y = [theView superview].frame.origin.y + ageTextRect.size.height;ageTextRect.size.height = 0;[_questionTV.view setFrame:ageTextRect];[self.view addSubview:_questionTV.view];CGRect endRect = _questionTV.view.frame;if(mark == 2){endRect.size.height = 270;}else{endRect.size.height = 250;}[UIView animateWithDuration:0.2 animations:^{[_questionTV.view setFrame:endRect];} completion:^(BOOL finished){}];}//隐藏选择列表
- (void)hidenTableView{_categoryDownBut.selected = YES;[_categoryDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];_ageDownBut.selected = YES;[_ageDownBut setImage:[UIImage imageNamed:@"下拉按钮.png"] forState:UIControlStateNormal];CGRect endRect = _questionTV.view.frame;endRect.size.height = 0;[UIView animateWithDuration:0.2 animations:^{[_questionTV.view setFrame:endRect];} completion:^(BOOL finished){[_questionTV.view removeFromSuperview];_questionTV = nil;}];
}//通知
- (void)selectAgeAndCategory:(id)sender{NSString *mark = [[sender userInfo] objectForKey:@"mark"];NSString *selectStr = [[sender userInfo] objectForKey:@"select"];if([mark isEqualToString:@"1"]){[_ageText setText:selectStr];}else if([mark isEqualToString:@"2"]){[_categoryText setText:selectStr];}[self hidenTableView];
}#pragma mark UIALertViewDelegate
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{if(alertView.tag == 220){if(buttonIndex == 0){_categoryText.text = @"";_questionText.text = @"";}}else if(alertView.tag == 221){}
}#pragma mark UITextFieldDelegate 
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField{if(textField.tag == 1006){if([[UIScreen mainScreen] bounds].size.height>480){}else{[self risingAction];}}if(textField.tag == 1007){if([[UIScreen mainScreen] bounds].size.height>568){}else{[self risingAction];}}return YES;
}#pragma mark UITextViewDelegate
- (BOOL)textViewShouldBeginEditing:(UITextView *)textView{if(textView.tag == 1005){if([[UIScreen mainScreen] bounds].size.height>480){}else{[self risingAction];}}return YES;
}-(void)risingAction{CGRect backRect = _backImgV.frame;backRect.origin.y = -115;[UIView animateWithDuration:0.2 animations:^{[_backImgV setFrame:backRect];} completion:^(BOOL finished){}];
}-(void)reductionAction{if([[UIScreen mainScreen] bounds].size.height>568){return;}CGRect backRect = _backImgV.frame;backRect.origin.y = 0;[UIView animateWithDuration:0.2 animations:^{[_backImgV setFrame:backRect];} completion:^(BOOL finished){}];
}@end

列表部分： 

#import <UIKit/UIKit.h>@interface QuestionTableView : UITableViewController <UITableViewDataSource , UITableViewDelegate>
@property (strong, nonatomic) NSMutableArray *ageArr;
@property (strong, nonatomic) NSMutableArray *categoryArr;
@property (nonatomic) NSInteger markInt;@end@implementation QuestionTableView
@synthesize markInt = _markInt;
@synthesize ageArr = _ageArr;
@synthesize categoryArr = _categoryArr;- (void)viewDidLoad {[super viewDidLoad];if(_markInt == 1){if(!_ageArr){_ageArr = [[NSMutableArray alloc] init];}[_ageArr addObject:@"18岁以下"];[_ageArr addObject:@"19岁-28岁"];[_ageArr addObject:@"29岁-38岁"];[_ageArr addObject:@"39岁-48岁"];[_ageArr addObject:@"49岁-58岁"];[_ageArr addObject:@"59岁-68岁"];[_ageArr addObject:@"69岁-78岁"];[_ageArr addObject:@"80岁以上"];}else if(_markInt == 2){if(!_categoryArr){_categoryArr = [[NSMutableArray alloc] init];}[_categoryArr addObject:@"普通内科"];[_categoryArr addObject:@"心脑血管"];[_categoryArr addObject:@"内分泌糖尿病"];[_categoryArr addObject:@"呼吸消化"];[_categoryArr addObject:@"肿瘤血液"];[_categoryArr addObject:@"中医"];[_categoryArr addObject:@"泌尿男科"];[_categoryArr addObject:@"妇产生殖"];[_categoryArr addObject:@"外科皮肤"];[_categoryArr addObject:@"儿科"];[_categoryArr addObject:@"五官"];[_categoryArr addObject:@"其它"];}[self.tableView setBounces:NO];
}#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {return 1;
}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {if(_markInt == 1){return _ageArr.count;}else if(_markInt == 2){return  _categoryArr.count;}return 0;
}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {static NSString *CellIdentifier = @"Cell";UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];if (cell == nil) {cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];}cell.selectionStyle = UITableViewCellSelectionStyleNone;cell.backgroundColor = [UIColor colorWithRed:230/255.0 green:230/255.0 blue:230/255.0 alpha:1];if(_markInt == 1){cell.textLabel.text = [_ageArr objectAtIndex:indexPath.row];}else if(_markInt == 2){cell.textLabel.text = [_categoryArr objectAtIndex:indexPath.row];}[cell.textLabel setTextColor:[UIColor blackColor]];[cell.textLabel setFont:[UIFont systemFontOfSize:15]];return cell;
}- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{return 30;
}#pragma mark - Table view delegate
// In a xib-based application, navigation from a table can be handled in -tableView:didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];NSString *text = cell.textLabel.text;NSDictionary *nfDict = [[NSDictionary alloc] initWithObjectsAndKeys:text,@"select",[NSString stringWithFormat:@"%ld",(long)_markInt],@"mark",nil];NSNotification *notf = [[NSNotification alloc] initWithName:@"selectAgeAndCategory" object:nil userInfo:nfDict];[[NSNotificationCenter defaultCenter] postNotification:notf];
}@end


图示：



这篇关于[IOS]列表选择以及键盘遮挡输入框问题的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/1091504。

相关文章

Vue3绑定props默认值问题

Vue3绑定props默认值问题

《Vue3绑定props默认值问题》使用Vue3的defineProps配合TypeScript的interface定义props类型,并通过withDefaults设置默认值,使组件能安全访问传入的... 目录前言步骤步骤1：使用 defineProps 定义 Props步骤2：设置默认值总结前言使用T
阅读更多...
Web服务器-Nginx-高并发问题

Web服务器-Nginx-高并发问题

《Web服务器-Nginx-高并发问题》Nginx通过事件驱动、I/O多路复用和异步非阻塞技术高效处理高并发,结合动静分离和限流策略,提升性能与稳定性... 目录前言一、架构1. 原生多进程架构2. 事件驱动模型3. IO多路复用4. 异步非阻塞 I/O5. Nginx高并发配置实战二、动静分离1. 职责2
阅读更多...
解决升级JDK报错:module java.base does not“opens java.lang.reflect“to unnamed module问题

解决升级JDK报错:module java.base does not“opens java.lang.reflect“to unnamed module问题

《解决升级JDK报错:modulejava.basedoesnot“opensjava.lang.reflect“tounnamedmodule问题》SpringBoot启动错误源于Jav... 目录问题描述原因分析解决方案总结问题描述启动sprintboot时报以下错误原因分析编程异js常是由Ja
阅读更多...
MySQL 表空却 ibd 文件过大的问题及解决方法

MySQL 表空却 ibd 文件过大的问题及解决方法

《MySQL表空却ibd文件过大的问题及解决方法》本文给大家介绍MySQL表空却ibd文件过大的问题及解决方法,本文给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友参考... 目录一、问题背景：表空却 “吃满” 磁盘的怪事二、问题复现：一步步编程还原异常场景1. 准备测试源表与数据
阅读更多...
解决Nginx启动报错Job for nginx.service failed because the control process exited with error code问题

解决Nginx启动报错Job for nginx.service failed because the control process exited with error code问题

《解决Nginx启动报错Jobfornginx.servicefailedbecausethecontrolprocessexitedwitherrorcode问题》Nginx启... 目录一、报错如下二、解决原因三、解决方式总结一、报错如下Job for nginx.service failed bec
阅读更多...
SysMain服务可以关吗? 解决SysMain服务导致的高CPU使用率问题

SysMain服务可以关吗? 解决SysMain服务导致的高CPU使用率问题

《SysMain服务可以关吗?解决SysMain服务导致的高CPU使用率问题》SysMain服务是超级预读取,该服务会记录您打开应用程序的模式，并预先将它们加载到内存中以节省时间，但它可能占用大量... 在使用电脑的过程中，CPU使用率居高不下是许多用户都遇到过的问题，其中名为SysMain的服务往往是罪魁
阅读更多...
Python进阶之列表推导式的10个核心技巧

Python进阶之列表推导式的10个核心技巧

《Python进阶之列表推导式的10个核心技巧》在Python编程中,列表推导式（ListComprehension）是提升代码效率的瑞士军刀,本文将通过真实场景案例,揭示列表推导式的进阶用法,希望对... 目录一、基础语法重构：理解推导式的底层逻辑二、嵌套循环：破解多维数据处理难题三、条件表达式：实现分支
阅读更多...
MySQ中出现幻读问题的解决过程

MySQ中出现幻读问题的解决过程

《MySQ中出现幻读问题的解决过程》文章解析MySQLInnoDB通过MVCC与间隙锁机制在可重复读隔离级别下解决幻读,确保事务一致性,同时指出性能影响及乐观锁等替代方案,帮助开发者优化数据库应用... 目录一、幻读的准确定义与核心特征幻读 vs 不可重复读二、mysql隔离级别深度解析各隔离级别的实现差异
阅读更多...
C++ vector越界问题的完整解决方案

C++ vector越界问题的完整解决方案

《C++vector越界问题的完整解决方案》在C++开发中,std::vector作为最常用的动态数组容器,其便捷性与性能优势使其成为处理可变长度数据的首选,然而,数组越界访问始终是威胁程序稳定性的... 目录引言一、vector越界的底层原理与危害1.1 越界访问的本质原因1.2 越界访问的实际危害二、基
阅读更多...
Python多线程应用中的卡死问题优化方案指南

Python多线程应用中的卡死问题优化方案指南

《Python多线程应用中的卡死问题优化方案指南》在利用Python语言开发某查询软件时,遇到了点击搜索按钮后软件卡死的问题,本文将简单分析一下出现的原因以及对应的优化方案,希望对大家有所帮助... 目录问题描述优化方案1. 网络请求优化2. 多线程架构优化3. 全局异常处理4. 配置管理优化优化效果1.
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2