毕业设计总结——自闭症儿童识别面部表情训练系统

      很开心完成了这个app，在新年愿望里其中有一个就是能有app上线AppStore，虽然未达到但相信会完成的。

      从15年12月份考研之后到今年的3月初，根据指导老师黄玲老师的需求做需求分析文档、设计文档、UML建模还有每一星期的计划报告，从需求分析到完成设计，体验了一次完整的软件开发过程。

      开学来到学校，同学们都在忙着找工作，校招、考公务员，那时我的心思全在项目上面，以致于到现在寝室里只剩我还在奔波找工作，小伙伴们准备打包行李回家/(ㄒoㄒ)/~~。不过，独立完成开发APP还是很爽的。

      好了，开始正题！

      我选择的毕业设计是自闭症儿童识别面部表情训练系统，老师的需求是通过玩游戏的形式让自闭症儿童识别人脸面部表情。参照过三星做的一款自闭症儿童辅助治疗app——LOOK AT ME，首尔大学的心理学教授，研究自闭症的专家来参与制作，是三星的良心之作。国内也有一款叫星星语，但只是一款辅助自闭症儿童进行与人交流的app。做不到三星那样的高大上，但有些地方是可以学习的。比如其中的拍摄人脸表情训练，于是，我想到了用上传用户头像。也就是实现出来是，给出一个题目让儿童拍摄人脸照片，（前提是与父母一起做这个训练，与父母做训练有利于儿童进行社会交流能力），完成后由父母评定拍摄照片是否正确，而LOOK AT ME是系统判定。

用的是hei苹果，Xcode版本是15年下载的6.0。

情景训练部分代码：

//
//  sightViewController.m
//  情绪识别训练
//
//  Created by lpx on 16/3/16.
//  Copyright (c) 2016年 lpx. All rights reserved.
//

#import "sightViewController.h"

@interface sightViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imaView;
@property(nonatomic, strong) NSData *fileData;
@property (weak, nonatomic) IBOutlet UILabel *showLabel;
@end

@implementation sightViewController

int count = 0; //计数

//返回菜单
- (IBAction)backBtnClick:(id)sender {
    [self dismissModalViewControllerAnimated:YES];
}
#pragma mark - 修改状态栏样式
- (UIStatusBarStyle)preferredStatusBarStyle {
    // 把statusBar的样式修改为白色
    return UIStatusBarStyleLightContent;
}

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

- (void)viewDidLoad {
    [super viewDidLoad];
    //换行
    _showLabel.lineBreakMode = UILineBreakModeWordWrap;
    _showLabel.numberOfLines = 0;
    
        self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Bg-02.png"]];

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *imageFilePath = [documentsDirectory stringByAppendingPathComponent:@"selfPhoto.jpg"];
    NSLog(@"imageFile->>%@",imageFilePath);
    UIImage *selfPhoto = [UIImage imageWithContentsOfFile:imageFilePath];//
    self.imaView.image = selfPhoto;
    [self.imaView.layer setCornerRadius:CGRectGetHeight([self.imaView bounds]) / 10];//修改半径
    self.imaView.layer.masksToBounds = YES;
    _showLabel.text = @"请拍一张高兴的人脸照片";
    count=0;//防止再次载入的时候 点击正确按钮无反应
}

- (IBAction)btnClik:(UIButton *)sender {
    
    UIActionSheet* actionSheet = [[UIActionSheet alloc]
                                  initWithTitle:@"请选择文件来源"
                                  delegate:self
                                  cancelButtonTitle:@"取消"
                                  destructiveButtonTitle:nil
                                  otherButtonTitles:@"照相机",@"本地相簿",nil];
    [actionSheet showInView:self.view];
}
- (IBAction)xiugai:(UIButton *)sender {
    
    
    [self.imaView setHidden:YES];
}

- (IBAction)zhengque:(UIButton *)sender {
       count =count+1;
    switch (count) {
        case 1:
       _showLabel.text=@"请拍一张悲伤的人脸照片";
            break;
        case 2:
       _showLabel.text=@"请拍一张惊讶的人脸照片";
            break;
        case 3:
       _showLabel.text=@"请拍一张害怕的人脸照片";
            break;
        case 4:
        _showLabel.text=@"请拍一张生气的照片";
            break;
        case 5:
            _showLabel.text=@"请拍一张中性的人脸照片";
            break;
            default:
            _showLabel.text=@"跟爸爸或妈妈合照一张，结束今天的训练！";
            break;
    }
}

#pragma mark -
#pragma UIActionSheet Delegate
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    // NSLog(@"buttonIndex = [%d]",buttonIndex);
    switch (buttonIndex) {
        case 0://照相机
        {
            UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
            imagePicker.delegate = self;
            imagePicker.allowsEditing = YES;
            imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
            //            [self presentModalViewController:imagePicker animated:YES];
            [self presentViewController:imagePicker animated:YES completion:nil];
        }
            break;
        case 1://本地相簿
        {
            UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
            imagePicker.delegate = self;
            imagePicker.allowsEditing = YES;
            imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
            //            [self presentModalViewController:imagePicker animated:YES];
            [self presentViewController:imagePicker animated:YES completion:nil];
        }
            break;
        default:
            break;
    }
}

#pragma mark -
#pragma UIImagePickerController Delegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(__bridge NSString *)kUTTypeImage]) {
        UIImage *img = [info objectForKey:UIImagePickerControllerEditedImage];
        [self performSelector:@selector(saveImage:)  withObject:img afterDelay:0.5];
    }
    else if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(__bridge NSString *)kUTTypeMovie]) {
        NSString *videoPath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
        self.fileData = [NSData dataWithContentsOfFile:videoPath];
    }
    //    [picker dismissModalViewControllerAnimated:YES];
    [picker dismissViewControllerAnimated:YES completion:nil];
}

- (void)saveImage:(UIImage *)image {
    BOOL success;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error;
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *imageFilePath = [documentsDirectory stringByAppendingPathComponent:@"selfPhoto.jpg"];
    NSLog(@"imageFile->>%@",imageFilePath);
    success = [fileManager fileExistsAtPath:imageFilePath];
    if(success) {
        success = [fileManager removeItemAtPath:imageFilePath error:&error];
    }
     UIImage *smallImage = [self thumbnailWithImageWithoutScale:image size:CGSizeMake(300.0f, 300.0f)];//将图片尺寸改为300*300
    [UIImageJPEGRepresentation(smallImage, 1.0f) writeToFile:imageFilePath atomically:YES];//写入文件
    UIImage *selfPhoto = [UIImage imageWithContentsOfFile:imageFilePath];//读取图片文件
    self.imaView.image = selfPhoto;
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
    //    [picker dismissModalViewControllerAnimated:YES];
    [picker dismissViewControllerAnimated:YES completion:nil];
}

//保持原来的长宽比，生成一个缩略图
- (UIImage *)thumbnailWithImageWithoutScale:(UIImage *)image size:(CGSize)asize
{
    UIImage *newimage;
    if (nil == image) {
        newimage = nil;
    }
    else{
        CGSize oldsize = image.size;
        CGRect rect;
        if (asize.width/asize.height > oldsize.width/oldsize.height) {
            rect.size.width = asize.height*oldsize.width/oldsize.height;
            rect.size.height = asize.height;
            rect.origin.x = (asize.width - rect.size.width)/2;
            rect.origin.y = 0;
        }
        else{
            rect.size.width = asize.width;
            rect.size.height = asize.width*oldsize.height/oldsize.width;
            rect.origin.x = 0;
            rect.origin.y = (asize.height - rect.size.height)/2;
        }
        UIGraphicsBeginImageContext(asize);
        CGContextRef context = UIGraphicsGetCurrentContext();
        CGContextSetFillColorWithColor(context, [[UIColor clearColor] CGColor]);
        UIRectFill(CGRectMake(0, 0, asize.width, asize.height));//clear background
        [image drawInRect:rect];
        newimage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();
    }
    
[self.imaView setHidden:NO];  //点击修改button的时候imgview不可见  在这里回复可见
    return newimage;
}
@end

 

     训练分为四部分，接下来就是基础训练。

    基础训练，我是以播放帧动画的形式表现人脸情绪表情，播放动画的同时还会播放一段故事情景语音，带儿童进入一个故事情景训练，我想这样的训练效果会更好。

基础训练具体代码实现：

//
//  highViewController.m
//  情绪识别训练
//
//  Created by lpx on 16/3/16.
//  Copyright (c) 2016年 lpx. All rights reserved.
//

#import "highViewController.h"
#import <AudioToolbox/AudioToolbox.h>

typedef enum
{
    kHappy = 0,     // 高兴
    kPain,          // 悲伤
    kAngry,         // 生气
    kFear,          // 害怕
    kSurprise,      // 惊讶
    kDetest,        // 厌恶
    kNormal,        // 中性
} kAnimationType;

@interface highViewController ()
{
     //表情数据字典
       NSMutableDictionary *_emotionDict;

    // 音效的数据字典
    NSMutableDictionary *_soundDict;
}
@end

@implementation highViewController
//返回菜单
- (IBAction)backBtnClick:(id)sender {
    [self dismissModalViewControllerAnimated:YES];
}

#pragma mark - 修改状态栏样式
- (UIStatusBarStyle)preferredStatusBarStyle {
    // 把statusBar的样式修改为白色
    return UIStatusBarStyleLightContent;
}

/**
 用数据字典来实现音效的管理
 */
- (SystemSoundID)loadSoundId:(NSString *)soundFile
{
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:soundFile ofType:nil]];
    SystemSoundID soundId;
    AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundId);
    return soundId;
}

   //初始化界面入口
- (void)viewDidLoad {
    [super viewDidLoad];

    //设置背景图片
    self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Bg-02.png"]];
    
    // 数据初始化工作，加载数据字典成员变量
    
    // 1. 需要指定路径
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Emotion" ofType:@"plist"];
    
    // 2. 加载数据字典
    _emotionDict = [NSMutableDictionary dictionaryWithContentsOfFile:path];

    // 3. 初始化音效字典
    _soundDict = [NSMutableDictionary dictionary];
    
}

- (IBAction)animationBtnClick:(UIButton *)sender {
    if ([_emotionView isAnimating]) {
        return;
    }
    NSDictionary *dict;
    switch (sender.tag) {
        case kHappy:
            dict = _emotionDict[@"happy"];
            break;
        case kPain:
            dict = _emotionDict[@"pain"];
            break;
        case kAngry:
            dict = _emotionDict[@"angry"];
            break;
        case kFear:
            dict = _emotionDict[@"fear"];
            break;
        case kSurprise:
            dict = _emotionDict[@"surprise"];
            break;
        case kDetest:
            dict = _emotionDict[@"detest"];
            break;
        case kNormal:
            dict = _emotionDict[@"normal"];
            break;
        default:
            break;
    }

    NSMutableArray *imageList = [NSMutableArray array];
    for (NSInteger i = 0; i < [dict[@"frames"]integerValue]; i++) {
        NSString *imageFile = [NSString stringWithFormat:dict[@"imageFormat"], i];
        UIImage *image = [UIImage imageNamed:imageFile];
        [imageList addObject:image];
    }
    
    NSArray *array = dict[@"soundFiles"];
    // 2) 判断数组中是否有数据，如果有数据做进一步处理
    SystemSoundID soundId = 0;
    if (array.count > 0) {
        // 3) 我们根据数组中得文件名，判断音频字典中是否有对应的记录，如果没有，建立新的音频数据字典
        for (NSString *fileName in array) {
            SystemSoundID playSoundId = [_soundDict[fileName]unsignedLongValue];
            
            // 如果在字典中没有定义音频代号，初始化音频Id，并且加入字典
            if (playSoundId <= 0) {
                playSoundId = [self loadSoundId:fileName];
                // 将playSoundId加入到数据字典，向字典中增加数值，不是用add
                // 向NSDict NSArray中添加数值需要“包装”
                // @() 会把一个NSInteger的数字，变成NSNumber的对象
                [_soundDict setValue:@(playSoundId) forKey:fileName];
            }
        }
        
        // 每一个动画的声音可以是多个，采用随机数的方式播放音效
        NSInteger seed = arc4random_uniform(array.count);
        
        NSString *fileName = array[seed];
        
        soundId = [_soundDict[fileName]unsignedLongValue];

    }
    
    
    // 设置图像的动画属性
    [_emotionView setAnimationImages:imageList];
    [_emotionView setAnimationDuration:[dict[@"frames"]integerValue] / 10.0];
    [_emotionView setAnimationRepeatCount:1];
    [_emotionView startAnimating];

    // 播放声音
    if (soundId > 0) {
        
    AudioServicesPlaySystemSound(soundId);
        
    }
    
}
@end

第三部分是看图猜字游戏训练，给出一张人脸表情，填该图的情绪表情。

具体代码实现：

//
//  BasicViewController.m
//  情绪识别训练
//
//  Created by lpx on 16/3/16.
//  Copyright (c) 2016年 lpx. All rights reserved.
//
#import "BasicViewController.h"
#import "MUModel.h"
#import <AVFoundation/AVFoundation.h>

// 定义 答案区域按钮的宽高
#define kButtonWidht 30

// 定义 答案区域按钮之间的间距
#define kMargin 10

// 屏幕的size
#define kScreenSize ([UIScreen mainScreen].bounds.size)

@interface BasicViewController ()

@property (weak, nonatomic) IBOutlet UILabel *indexLabel;
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property (weak, nonatomic) IBOutlet UIButton *imagebutton;
@property (weak, nonatomic) IBOutlet UIView *answerview;
@property (weak, nonatomic) IBOutlet UIView *optionView;
@property (weak, nonatomic) IBOutlet UIButton *tipButton;
@property (weak, nonatomic) IBOutlet UIButton *nextButton;
@property (weak, nonatomic) IBOutlet UIButton *coinButton;
@property (nonatomic, strong) NSArray *dataArray;
// 表示第几题
@property (nonatomic, assign) NSInteger index;
@end

@implementation BasicViewController
//返回菜单
- (IBAction)backBtnClick:(id)sender {
    [self dismissModalViewControllerAnimated:YES];
}

#pragma mark - 修改状态栏样式
- (UIStatusBarStyle)preferredStatusBarStyle {
    // 把statusBar的样式修改为白色
    return UIStatusBarStyleLightContent;
}

#pragma mark - 懒加载数据
- (NSArray *)dataArray {
    if (nil == _dataArray) {
        
        // 1. 读取文件路径
        NSString *path = [[NSBundle mainBundle] pathForResource:@"questions.plist" ofType:nil];
        
        // 2. 读取内容到临时数组
        NSArray *tempArray = [NSArray arrayWithContentsOfFile:path];
        
        // 3. 创建一个可变数组
        NSMutableArray *mutableArray = [NSMutableArray array];
        
        // 4. 遍历临时数组中的字典转为模型 , 存放到可变数组
        for (NSDictionary *dict in tempArray) {
            MUModel *guessModel = [MUModel guessModelDict:dict];
            [mutableArray addObject:guessModel];
        }
        
        // 5. 把可变数组赋值给 _dataArray
        _dataArray = mutableArray;
    }
    return _dataArray;
}

#pragma mark - 页面加载
- (void)viewDidLoad {
    [super viewDidLoad];//界面入口

    // 初始化index = 1
    _index = 1;
    
    [self setupUI];
//    _nextButton.enabled = NO;
}

#pragma mark - 设置UI界面
- (void)setupUI {
    // 给控件设置数据
    // 取出_index - 1 在 数组中对应的数据
    MUModel *guessModel = self.dataArray[_index - 1];
    
    // 索引label
    _indexLabel.text = [NSString stringWithFormat:@"%ld/%ld",_index, self.dataArray.count];
    
    // titleLabel
    _titleLabel.text = guessModel.title;
    
    //换行
    _titleLabel.lineBreakMode = UILineBreakModeWordWrap;
    _titleLabel.numberOfLines = 0;
    
    // 设置 imageButton
    // 取出图片名称
    NSString *imageName = guessModel.icon;
    
    // 实例化一个image对象
    UIImage *image = [UIImage imageNamed:imageName];
    
    [_imagebutton setImage:image forState:UIControlStateNormal];

    /**
     答案区域中, button的个数是跟答案的长度有关
     根据每道题的答案个数来决定按钮的个数
     
     初始设置
     [self setupAnswerView];
     
     答案的个数是不同的, 需要根据每一题的答案长度来确定
     接收的参数: 答案的长度
     修改后:
     [self setupAnswerViewWithLenght:length];
     */
    
    // 获取答案
    NSString *answer = guessModel.answer;
    
    // 答案长度
    NSInteger length = answer.length;
    
    [self setupAnswerViewWithLenght:length];
    
    /**
     选项区域 3行 7 列 , 21 个按钮
     按钮的个数不会发生变化, 变化的知识按钮上的文字
     
     初始设置:
     [self setupOptionView];
     
     修改:
     选项区域中的button上需要设置文本
     传递参数: model中 options 数组, 存放button上需要的文字
     */
    [self setupOptionViewWithOptions:guessModel.options];
}

#pragma mark - 答案区域设置
- (void)setupAnswerViewWithLenght:(NSInteger)count {
    // 表示答案的长度, button的个数
    //    int count = 5;
    // (屏幕的宽度 - button的总宽度 - margin的总宽度)/ 2;
    CGFloat startX = (kScreenSize.width - count * kButtonWidht - (count - 1) * kMargin)/2;
    
    // 添加本题的按钮的时候, 要把上一题的按钮给移除掉
    //    for (UIView *view in _answerView.subviews) {
    //        [view removeFromSuperview];
    //    }
    /**
     让数组中所有的元素都执行 removeFromSuperview
     */
    [_answerview.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
    
    for (int i = 0; i < count; i++) {
        // 计算button的x值
        CGFloat buttonX = i * kButtonWidht + i * kMargin + startX;
        
        // 实例化button
        UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(buttonX, 0, kButtonWidht, kButtonWidht)];
        // 设置button的背景图片
        [button setBackgroundImage:[UIImage imageNamed:@"Btn-option45"] forState:UIControlStateNormal];
        [button setBackgroundImage:[UIImage imageNamed:@"btn_answer_highlighted"] forState:UIControlStateHighlighted];
        // 设置文本颜色
        [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        // 添加点击事件
        [button addTarget:self
                   action:@selector(didClickAnswerButton:)
         forControlEvents:UIControlEventTouchUpInside];
        // 添加到 answerView上
        [_answerview addSubview:button];
    }
}

#pragma mark -  选项区域
- (void)setupOptionViewWithOptions:(NSArray *)options {
    int column = 7;    // 确定列数
    NSInteger count = options.count;     // 21个按钮
    // 计算margin
    CGFloat margin = (kScreenSize.width - column * kButtonWidht) / (column + 1);
    // 把button给移除掉
    [_optionView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
    // 循环添加button
    for (int i = 0; i < count; i++) {
        // 得到行索引和列索引
        NSInteger rowIndex = i / column;
        NSInteger columnIndex = i % column;
        // 计算x, y
        CGFloat buttonX = (columnIndex + 1) * margin + columnIndex * kButtonWidht;
        CGFloat buttonY = rowIndex * margin + rowIndex * kButtonWidht;
        // 实例化按钮
        UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(buttonX, buttonY, kButtonWidht, kButtonWidht)];
        // 设置背景图片
        [button setBackgroundImage:[UIImage imageNamed:@"Btn-option45"] forState:UIControlStateNormal];
        [button setBackgroundImage:[UIImage imageNamed:@"btn_option_highlighted"] forState:UIControlStateHighlighted];
        // 设置按钮的文字
        [button setTitle:options[i] forState:UIControlStateNormal];
        // 修改文本的颜色
        [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        // 添加按钮的点击事件
        [button addTarget:self
                   action:@selector(didClickOptionButton:)
         forControlEvents:UIControlEventTouchUpInside];
        // 添加按钮到optionView
        [_optionView addSubview:button];
    }
}

#pragma mark -  点击答案区域的按钮
- (void)didClickAnswerButton:(UIButton *)answerButton {
    // 0. 对文本长度做判断
    if (answerButton.currentTitle.length == 0) {
        return;
    }
    /**
     0. 如果被点击按钮没有文本, 就直接返回, 不必再执行后面的代码
     1. 取出被点击按钮的文本
     2. 清空被点击按钮的文本
     3. 在选项区域中 对应到文本的按钮 显示出来
     4. 如果用户输入错误导致字体变红, 当用户点击答案区域的按钮的时候, 就表示用户还没有输入完成
     5. 打开选项区域的用户交互功能(如果用户完成输入, 会把选项区域给禁用)
     */
    
    // 1. 取出文本
    NSString *title = answerButton.currentTitle;
    
    // 2.清空被点击按钮的文本
    [answerButton setTitle:@"" forState:UIControlStateNormal];
    
    // 3. 在选项区域中, 对应到文本的按钮, 显示出来
    [_optionView.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        UIButton *optionButton = obj;
        
        // 取出button文本和 title进行比较, 如果相同, 就显示出来
        if ([optionButton.currentTitle isEqualToString:title]) {
            optionButton.hidden = NO;
            
            *stop = YES;
        }
    }];
    
    // 4. 把按钮的红色改为黑色
    [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        UIButton *answerButton = obj;
        
        [answerButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    }];
    
    // 5. 打开选项区域的用户交互
    _optionView.userInteractionEnabled = YES;
}

#pragma mark -  点击选项区域的按钮
- (void)didClickOptionButton:(UIButton *)optionButton {
    /**
     取button的title 一定要分状态
     [optionButton titleForState:UIControlStateNormal];
     
     optionButton.currentTitle
     
     1. 把被点击按钮的文字取出来
     2. 隐藏被点击按钮
     3. 被点击按钮的文字出现在 答案区域的按钮上
     4. 判断用户是否输入完成
     5. 判断用户是否输入正确
     */
    
    // 1. 取出文字
    NSString *title = optionButton.currentTitle;
    
    // 2. 隐藏被点击按钮
    optionButton.hidden = YES;
    
    // 3. 被点击按钮的文字 显示到 答案区域
    // obj -->  数组中的对象
    // idx -->  下标
    // *stop --> 如果设置为 yes 的化,会立即跳出遍历
    [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        
        UIButton *answerButton = obj;
        if(answerButton.currentTitle.length==0)
        {
            [answerButton setTitle:title forState:UIControlStateNormal];
        *stop = YES;
           }
    }];
    // 4. 判断用户是否输入完成
    // isComplete = YES 表示, 用户输入完成
    __block BOOL isComplete = YES;
    [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        // 类型转换
        UIButton *answerButton = obj;
        if (answerButton.currentTitle.length == 0) {
            // 该按钮还没有被设置文本
            isComplete = NO;
            *stop = YES;
        }
    }];
    if (isComplete) { // 表示用户输入完成
        // 用户不能再点击 选项区域中的按钮
        // userInteractionEnabled = NO  禁止任何用户交互, 如果是父view设置了这个属性为NO, 那么它的子view也将不会接受用户交互
        _optionView.userInteractionEnabled = NO;
        /**
         5. 判断用户是否输入正确
         5.1 取出用户输入的答案
         5.2 取出当前题目的正确答案
         5.3 进行比较
         */
        
        // 5.1 取出用户输入的答案
        
        // 定义一个可变字符串
        NSMutableString *userAnswer = [NSMutableString string];
        [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
            UIButton *answerButton = obj;
            // 拼接每一个button上的文本
            [userAnswer appendString:answerButton.currentTitle];
        }];
        
        // 5.2 取出当前题目的正确答案
        MUModel *guessModel = self.dataArray[_index - 1];
        NSString *rightAnswer = guessModel.answer;
        
        // 5.3.2.1 取出当前的金币数量
        NSInteger currentCoin = _coinButton.currentTitle.integerValue;
        // 5.3 进行比较
        if ([userAnswer isEqualToString:rightAnswer]) {
            /**
             用户输入正确

             1. 自动的跳入下一题
             2. 增加100 金币
             */
            /********  答案正确播放音效  ********/
            //1.获取音效文件
            NSString *path = [[NSBundle mainBundle]pathForResource:@"你真棒.mp3" ofType:nil];
            NSURL *url = [NSURL fileURLWithPath:path];
            SystemSoundID soundID = 0;
            AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundID);
            AudioServicesPlaySystemSound(soundID);
            
            //播放提示
            //  实例化UIAlertController , ios7 UIAlertView
                    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"答对了！" message:@"你真厉害(ง •̀_•́)ง" preferredStyle:UIAlertControllerStyleAlert];
                              //  展示alert
                    [self presentViewController:alertController animated:YES completion:nil];
             [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(creatAlert:) userInfo:alertController repeats:NO];
            
            
            
            // 5.3.1 自动跳入下一题
            [self performSelector:@selector(didClickNextButton:) withObject:nil afterDelay:1];
            
            /**
             5.3.2 增加100金币
             1. 取出当前的金币数量
             2. 更新(加/减)
             3. 赋值回去
             */
            // 5.3.2.1 增加100金币
            currentCoin += 100;
            
        } else {
            /**
             用户输入不正确
             
             1. 答案区域文本的字体变红
             2. 减少1000金币
             */
            
            // 5.3.1 当用户输入错误, 答案区域的文字变为红色
            [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
                UIButton *answerButton = obj;
                
                [answerButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
                
            }];
            

            // 5.3.2.2 减少1000金币
            currentCoin -= 1000;
        }
        
        // 5.3.2.3 把修改过的金币数量赋值给  _coinButotn
        NSString *coinString = [NSString stringWithFormat:@"%ld",currentCoin];
        
        [_coinButton setTitle:coinString forState:UIControlStateNormal];
    }
}

//UIAlertView计时器
-(void)creatAlert:(NSTimer * )timer{
    UIAlertController *alertController = [timer userInfo];
    [alertController dismissViewControllerAnimated:YES completion:nil];
    alertController = nil;
}

#pragma mark - 点击提示按钮
- (IBAction)didClickTipButton:(id)sender {
    
    /**
     1. 减去1000金币
     2. 取出正确答案的第一个字
     3. 在答案区域的第一个button上显示 第一个字, 其他按钮文本清空
     4. 选项区域中, 只有第一字对应的button隐藏, 其他的显示出来
     5. 答案区域的文本要变为黑色
     6. 允许选项区域用户交互
     7. 对用户的金币数量做判断, 如果不够减就提示用户
     */
    
    // 1. 减去1000金币
    // 1.1 取出当前的金币数量
    NSInteger currentCoin = _coinButton.currentTitle.integerValue;
    
    // 1.2 减去1000
    currentCoin -= 100;
      // 1.3 赋值回去
    NSString *coinString = [NSString stringWithFormat:@"%ld", currentCoin];
    [_coinButton setTitle:coinString forState:UIControlStateNormal];
    
    // 2. 取出正确答案的第一个字
    // 2.1 先取出正确答案
    MUModel *guessModel = self.dataArray[_index - 1];
    NSString *rightAnswer = guessModel.answer;
    
    // 2.2 取第一个字
    NSString *firstString = [rightAnswer substringToIndex:1];
    
    // 3. 答案区域第一个按钮显示 firstString , 其他按钮的文本清空掉
    [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        UIButton *answerButton = obj;
        
        if (idx == 0) { // 第一个button , 设置正确答案的第一个字
            [answerButton setTitle:firstString forState:UIControlStateNormal];
        } else { // 如果不是第一个按钮, 就直接清空文本
            [answerButton setTitle:@"" forState:UIControlStateNormal];
        }
        
    }];
    
    // 4. 选项区域中和第一个字对应的button隐藏, 其他的全部显示
    [_optionView.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        UIButton *optionButton = obj;
        
        if ([optionButton.currentTitle isEqualToString:firstString]) {
            // 如果字符串相等, 就把button隐藏
            optionButton.hidden = YES;
        } else {
            // 不等的话就显示出来
            optionButton.hidden = NO;
        }
    }];
    
    // 5. 修改答案区域文本颜色为黑色
    [_answerview.subviews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
        UIButton *answerButton = obj;
        
        [answerButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    }];
    
    // 6. 允许选项区域的用户交互
    _optionView.userInteractionEnabled = YES;
}
#pragma mark -
#pragma mark -  点击"下一题"按钮
- (IBAction)didClickNextButton:(id)sender {
    
    // 0. 是否是最后一道题进行判断
    if (_index == self.dataArray.count) {
        
        return;
    }
    
    /**
     0. 先进行判断是否是最后一道题, 如果是, 就直接返回 (防止最后一道题回答正确之后,导致的崩溃)
     1. 让index + 1
     2. 切换界面数据
     3. 到最后一题的时候, 按钮禁用
     4. 如果用户输入完成, optionView的用户交互功能会被禁用, 在这里要打开
     */
    
    // 1. 让index + 1
    _index++;
    
    // 2. 切换数据
    [self setupUI];
    
    // 3. 到最后一题的时候禁用按钮
    // 按钮被禁用将不再响应任何用户交互(点击按钮之后不会再调用相应的方法)
    _nextButton.enabled = (_index != self.dataArray.count);
    
    // 4. 开启optionView的用户交互功能
    _optionView.userInteractionEnabled = YES;
}
@end

最后一个情景训练，框架跟上一个训练是一样的，只不过把图片改成了播放情景视频，给出训练题目，观看视频，然后回答问题。

具体代码实现：

//
//  VideoViewController.m
//  情绪识别训练
//
//  Created by lpx on 16/4/11.
//  Copyright (c) 2016年 lpx. All rights reserved.
//

#import "VideoViewController.h"
#import <MediaPlayer/MediaPlayer.h>
#import "MUModel.h"
#import <AVFoundation/AVFoundation.h>

// 屏幕的size
#define kScreenSize ([UIScreen mainScreen].bounds.size)
// 定义 答案区域按钮的宽高
#define kButtonWidht 60

// 定义 答案区域按钮之间的间距
#define kMargin 10

@interface VideoViewController ()
@property (weak, nonatomic) IBOutlet UILabel *indexLabel;
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property (weak, nonatomic) IBOutlet UIButton *imagebutton;
@property (weak, nonatomic) IBOutlet UIView *optionView;
@property (weak, nonatomic) IBOutlet UIButton *nextButton;
@property (weak, nonatomic) IBOutlet UIButton *previousBtn;
@property (nonatomic, strong) MPMoviePlayerController  *vc;
@property (nonatomic, strong) NSArray *dataArray;
// 表示第几题
@property (nonatomic, assign) NSInteger index;
@end

@implementation VideoViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Bg-02.png"]];
    
    // 初始化index = 1
    _index = 1;

    [self setupUI];
}

- (IBAction)returnBtn:(id)sender {
    [self dismissModalViewControllerAnimated:YES];

}

#pragma mark - 懒加载数据
- (NSArray *)dataArray {
    if (nil == _dataArray) {
        
        // 1. 读取文件路径
        NSString *path = [[NSBundle mainBundle] pathForResource:@"MovieQuestion.plist" ofType:nil];
        
        // 2. 读取内容到临时数组
        NSArray *tempArray = [NSArray arrayWithContentsOfFile:path];
        
        // 3. 创建一个可变数组
        NSMutableArray *mutableArray = [NSMutableArray array];
        
        // 4. 遍历临时数组中的字典转为模型 , 存放到可变数组
        for (NSDictionary *dict in tempArray) {
            MUModel *guessModel = [MUModel guessModelDict:dict];
            
            [mutableArray addObject:guessModel];
        }
        
        // 5. 把可变数组赋值给 _dataArray
        _dataArray = mutableArray;
        
    }
    return _dataArray;
}

#pragma mark - 设置UI界面
- (void)setupUI {
    
    // 给控件设置数据
    // 取出_index - 1 在 数组中对应的数据
    MUModel *guessModel = self.dataArray[_index - 1];
    
        // 索引label
        _indexLabel.text = [NSString stringWithFormat:@"%ld/%ld",(long)_index, (unsigned long)self.dataArray.count];
    
        // titleLabel
        _titleLabel.text = guessModel.title;
    
    //设置 imageButton
    // 取出图片名称
      NSString *imageName = guessModel.icon;
    //    // 实例化一个image对象
       UIImage *image = [UIImage imageNamed:imageName];
    //
       [_imagebutton setImage:image forState:UIControlStateNormal];
    //
    
    //换行
    _titleLabel.lineBreakMode = UILineBreakModeWordWrap;
    _titleLabel.numberOfLines = 0;
    
    /**

     按钮的个数不会发生变化, 变化的知识按钮上的文字
     初始设置:
     [self setupOptionView];
     
     修改:
     选项区域中的button上需要设置文本
     传递参数: model中 options 数组, 存放button上需要的文字
     */
    [self setupOptionViewWithOptions:guessModel.options];
    
      _optionView.userInteractionEnabled = NO;
}

#pragma mark -  选项区域
- (void)setupOptionViewWithOptions:(NSArray *)options {
    // 确定列数
    int column = 4;

    NSInteger count = options.count;
    
    // 计算margin
    CGFloat margin = (kScreenSize.width - column * kButtonWidht) / (column + 1);
    
    // 把button给移除掉
    
    [_optionView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
    
    // 循环添加button
    for (int i = 0; i < count; i++) {
        // 得到行索引和列索引
        NSInteger rowIndex = i / column;
        NSInteger columnIndex = i % column;
        
        // 计算x, y
        CGFloat buttonX = (columnIndex + 1) * margin + columnIndex * kButtonWidht;
        CGFloat buttonY = rowIndex * margin + rowIndex * kButtonWidht;
        
        // 实例化按钮
        UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(buttonX, buttonY, kButtonWidht, kButtonWidht)];
        
        // 设置背景图片
        [button setBackgroundImage:[UIImage imageNamed:@"Btn-answer57"] forState:UIControlStateNormal];
        [button setBackgroundImage:[UIImage imageNamed:@"btn_option_highlighted"] forState:UIControlStateHighlighted];
        
        // 设置按钮的文字
        [button setTitle:options[i] forState:UIControlStateNormal];
        
        // 修改文本的颜色
        [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        
        // 添加按钮的点击事件
        [button addTarget:self
                   action:@selector(didClickOptionButton:)
         forControlEvents:UIControlEventTouchUpInside];
        
        // 添加按钮到optionView
        [_optionView addSubview:button];
    }
}

#pragma mark -  点击选项区域的按钮
- (void)didClickOptionButton:(UIButton *)optionButton {
    
    // 1. 取出文字
    NSString *title = optionButton.currentTitle;
    // 5.2 取出当前题目的正确答案
    MUModel *guessModel = self.dataArray[_index - 1];
    
    NSString *rightAnswer = guessModel.answer;
    
    //如果回答正确
    if (title==rightAnswer) {
        
        NSString *path = [[NSBundle mainBundle]pathForResource:@"你真棒.mp3" ofType:nil];
        NSURL *url = [NSURL fileURLWithPath:path];
        SystemSoundID soundID = 0;
        AudioServicesCreateSystemSoundID((__bridge CFURLRef)(url), &soundID);
        AudioServicesPlaySystemSound(soundID);
        
        //播放提示
        
        // 1. 实例化UIAlertController , ios7 UIAlertView
        UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"答对了！" message:@"你真厉害(ง •̀_•́)ง" preferredStyle:UIAlertControllerStyleAlert];
        [self presentViewController:alertController animated:YES completion:nil];
        [NSTimer scheduledTimerWithTimeInterval:1.5 target:self selector:@selector(creatAlert:) userInfo:alertController repeats:NO];
        
        // 自动跳入下一题
        [self performSelector:@selector(nextBtn:) withObject:nil afterDelay:1];
       
    }
}

//计时器
-(void)creatAlert:(NSTimer * )timer{
    UIAlertController *alertController = [timer userInfo];
    [alertController dismissViewControllerAnimated:YES completion:nil];
    alertController = nil;
}
//播放视频
- (IBAction)play:(id)sender {
    MUModel *guessModel = self.dataArray[_index - 1];
    NSString *movieName = guessModel.moviename;
    //创建播放器
    NSString *path = [[NSBundle mainBundle]pathForResource:movieName ofType:nil];
    MPMoviePlayerController  *vc = [[MPMoviePlayerController alloc]initWithContentURL:[NSURL fileURLWithPath:path]];
    vc.view.frame = self.view.bounds;
    [self.view addSubview:vc.view];
    self.vc = vc;
    //播放
    [self.vc play];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil];
}
//播放完成后销毁视频控制器
-(void)myMovieFinishedCallback:(NSNotification*)notify
{
    //视频播放对象
    MPMoviePlayerController* vc = [notify object];
    //销毁播放通知
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:MPMoviePlayerPlaybackDidFinishNotification
                                                  object:vc];
    [vc.view removeFromSuperview];
    
      _optionView.userInteractionEnabled = YES;
    
}

- (IBAction)nextBtn:(id)sender {
    
    _previousBtn.enabled=YES;
    // 0. 是否是最后一道题进行判断
    if (_index == self.dataArray.count) {
        return;
    }
    
    /**
     0. 先进行判断是否是最后一道题, 如果是, 就直接返回 (防止最后一道题回答正确之后,导致的崩溃)
     1. 让index + 1
     2. 切换界面数据
     3. 到最后一题的时候, 按钮禁用
     4. 如果用户输入完成, optionView的用户交互功能会被禁用, 在这里要打开
     */
    
    // 1. 让index + 1
    _index++;
    
    // 2. 切换数据
    [self setupUI];
    
    // 3. 到最后一题的时候禁用按钮
    // 按钮被禁用将不再响应任何用户交互(点击按钮之后不会再调用相应的方法)
    _nextButton.enabled = (_index != self.dataArray.count);
    
    // 4. 开启optionView的用户交互功能
 
}

- (IBAction)previousBtn:(id)sender {
    _nextButton.enabled=YES;
    if (_index<0) {
        return;
    }
        _index=_index-2;

    if (_index ==1 ) {
        _previousBtn.enabled=NO;
    }
    
       [self setupUI];
}
@end