說明：face.com已經被facebook收購，停止了人臉識別的服務了。
(接上篇)在上篇的基礎之上我們獲得人臉的相關的信息，如何來用呢，下面我接下來我貼上的一部分的代碼:首先這一個ViewContrller的頭文件
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
@interface ViewController : UIViewController<UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIAlertViewDelegate,UIActionSheetDelegate>
{
NSTimer *_scanningTimer; //用於處理模擬的掃描的狀態
BOOL isUp; //用於判斷圖片的位置
UIView *scanning; //這個視圖在等待數據返回的時候用於模擬掃描的假象
UIView *infoBackgroungView; //呈現背景的圖片
UIImageView *imageView; //呈現選中的圖片視圖
}
- (IBAction)selectPictrue:(id)sender;
@end然後是我獲得的http請求的返回的值之後的收到的通知，這裏我要提取我需要的信息，同時更新當前view中的內容
- (void)getText:(NSNotification*)notification
{
[scanning removeFromSuperview];
for (UIView *view in [infoBackgroungView subviews]) {
[view removeFromSuperview];
}
[_scanningTimer invalidate];
[_scanningTimer release];
_scanningTimer = nil;
NSDictionary *infoDictionary = [[NSMutableDictionary alloc]init];
NSDictionary *dic = [[notification userInfo] objectForKey:@"PostData"];
NSMutableString *string = [[NSMutableString alloc]init];
if ([[dic objectForKey:@"status"] isEqualToString:@"fail"]) {
[string appendFormat:@"識別失敗:%@\n",[dic objectForKey:@"message"]];
return;
}
if ([[dic objectForKey:@"status"] isEqualToString:@"success"]) {
[string appendFormat:@"%@\n",@"識別成功"];
}
NSMutableDictionary *rectangleInfo = [[NSMutableDictionary alloc]init];
if ([dic objectForKey:@"photos"])
{
NSDictionary *photos = [[dic objectForKey:@"photos"]lastObject];
if ([photos objectForKey:@"height"]) {
[string appendFormat:@"圖片高度:%3f\n",[[photos objectForKey:@"height"]floatValue]];
[infoDictionary setValue:[photos objectForKey:@"height"] forKey:@"height"];
[rectangleInfo setValue:[photos objectForKey:@"height"] forKey:@"picHeight"];
}
if ([photos objectForKey:@"width"]) {
[infoDictionary setValue:[photos objectForKey:@"width"] forKey:@"width"];
[rectangleInfo setValue:[photos objectForKey:@"width"] forKey:@"picWidth"];
}
if ([photos objectForKey:@"tags"]&&[[photos objectForKey:@"tags"] count ] !=0 )
{
NSDictionary *array = [[photos objectForKey:@"tags"]lastObject];
NSDictionary *attr = [array objectForKey:@"attributes"];
if ([attr objectForKey:@"age_max"] ) {
NSDictionary *dic = [attr objectForKey:@"age_max"];
[string appendFormat:@"最大年紀是:%@，置信度是:%f\n",[dic objectForKey:@"value"],[[dic objectForKey:@"confidence"]floatValue]];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"maxAge"];
}
if ([attr objectForKey:@"age_min"] ) {
NSDictionary *dic = [attr objectForKey:@"age_min"];
[string appendFormat:@"最小年紀是:%@，置信度是:%f\n",[dic objectForKey:@"value"],[[dic objectForKey:@"confidence"]floatValue]];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"minAge"];
}
if ([attr objectForKey:@"gender"] ) {
NSDictionary *dic = [attr objectForKey:@"gender"];
[string appendFormat:@"性別是:%@，置信度是:%f\n",[dic objectForKey:@"value"],[[dic objectForKey:@"confidence"]floatValue]];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"sex"];
}
if ([attr objectForKey:@"glasses"] ) {
NSDictionary *dic = [attr objectForKey:@"glasses"];
[string appendFormat:@"是否帶眼鏡是:%@ ，置信度是:%f\n",[[dic objectForKey:@"value"]boolValue ]?@"是":@"不是",[[dic objectForKey:@"confidence"]floatValue]];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"glasses"];
}
if ([attr objectForKey:@"mood"] ) {
NSDictionary *dic = [attr objectForKey:@"mood"];
[string appendFormat:@"心情是:%@，置信度是:%f\n",[dic objectForKey:@"value"],[[dic objectForKey:@"confidence"]floatValue] ];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"mood"];
}
if ([attr objectForKey:@"smiling"] ) {
NSDictionary *dic = [attr objectForKey:@"smiling"];
[string appendFormat:@"是否在笑:%@，置信度是:%f\n",[[dic objectForKey:@"value"]boolValue ]?@"是":@"不是",[[dic objectForKey:@"confidence"] floatValue]];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"smiling"];
}
if ([attr objectForKey:@"lips"]) {
NSDictionary *dic = [attr objectForKey:@"lips"];
[infoDictionary setValue:[dic objectForKey:@"value"] forKey:@"lips"];
}
if ([array objectForKey:@"center"]) {
NSDictionary *dic = [array objectForKey:@"center"];
[rectangleInfo setValue:dic forKey:@"center"];
}
if ([array objectForKey:@"height"]) {
NSString *height = [array objectForKey:@"height"];
[rectangleInfo setValue:height forKey:@"faceHeight"];
}
if ([array objectForKey:@"width"]) {
NSString *width = [array objectForKey:@"width"];
[rectangleInfo setValue:width forKey:@"faceWidth"];
}
}
else {
UILabel *recognizeError = [[UILabel alloc]initWithFrame:CGRectMake(10, 20, 100, 34)];
recognizeError.tag = RECOGNIZEDERRORLABELTAG;
recognizeError.text = @"識別失敗";
recognizeError.backgroundColor = [UIColor clearColor];
recognizeError.textColor= [UIColor whiteColor];
recognizeError.textAlignment = UITextAlignmentLeft;
[infoBackgroungView addSubview:recognizeError];
[recognizeError release];
UIButton *reSelectImage = [[UIButton alloc]initWithFrame:CGRectMake(110,20, 170, 34)];
[reSelectImage setTitle:@"重新選擇圖片" forState:UIControlStateNormal];
[reSelectImage addTarget:self action:@selector(clickRecognize:) forControlEvents:UIControlEventTouchUpInside];
reSelectImage.tag = SELECTIMAGETAG;
[infoBackgroungView addSubview:reSelectImage];
[reSelectImage release];
return;
}
}
[self drawFaceRectangle:rectangleInfo]; //爲圖片劃框
[rectangleInfo release];
UIView *view = (UIView*)[self.view viewWithTag:INFOVIEWTAG];
if(view)
{
[view removeFromSuperview];
} // 這個informationVIew 是用來呈現我要的信息的視圖
InformationView *infoView = [[InformationView alloc]initWithFrame:CGRectMake(0, 366, 320, 96) withInfo:infoDictionary];
infoView.tag = INFOVIEWTAG;
[self.view addSubview:infoView];
[infoView release];
[infoDictionary release];
UIButton *clickRecognize = [UIButton buttonWithType:UIButtonTypeCustom];
clickRecognize.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"NavigationLeftUper"]];
clickRecognize.frame = CGRectMake(240, 7, 68, 30);
clickRecognize.titleLabel.font = [UIFont systemFontOfSize:12];
[clickRecognize setTitle:@"換張照片" forState:UIControlStateNormal];
[clickRecognize setTag:RERECOGNIZEBUTTONTAG];
[clickRecognize addTarget:self action:@selector(clickRecognize:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:clickRecognize];
//[clickRecognize release];
}OK，大功告成，我接下來一張圖
稍後在淡藍色的視圖上會呈現人臉的各項信息。