如何在IOS中的本机相机视图上覆盖文本框 [英] How do i overlay a text box over a native camera view in IOS

问题描述

我有一个build 1和build 2完成。

Build 1 - 一个简单的空白屏幕，有两个对齐约束的文本框

Build 2 - 当应用程序运行时，它调用IOS的本机后置摄像头设备。

我的第三个版本是这两个以前的版本一起作为一个，其中本机相机显示实时视频馈送，覆盖的是两个文本框及其对齐约束。

我不确定如何将两位代码放在一起。

Build 1 --.h文件

  #import< UIKit /UIKit.h> 
 
 @interface ViewController：UIViewController 
 
 @property（强，非原子）IBOutlet UIView * TestTextBox; 
 
 @property（weak，nonatomic）IBOutlet UITextView * TestTetBox2; 
 
 @end 
  

Build 1 --.m文件

  #importViewController.h
 
 @interface ViewController（）
 
 @end 
 
 
 
 @implementation ViewController 
 
 @synthesize TestTextBox; 
 
 @synthesize TestTetBox2; 
 
 
  - （void）viewDidLoad {
 [super viewDidLoad]; 
 //在加载视图之后执行任何其他设置，通常来自nib。 
} 
 
  - （void）didReceiveMemoryWarning {
 [super didReceiveMemoryWarning]; 
 //处理可以重新创建的任何资源。 
} 
 
 @end 
  

Build 2 --.h文件

  #import< UIKit / UIKit.h> 
 
 @interface ViewController：UIViewController< UIImagePickerControllerDelegate，UINavigationControllerDelegate> 
 
 @property（强，非原子）IBOutlet UIImageView * imageView; 
 
 
 @end 
  

Build 2 --.m file

  #importViewController.h
 
 @interface ViewController（）
 
 @end 
 
 @implementation ViewController 
 
  - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 //在加载视图之后执行任何其他设置，通常来自nib。 
} 
 
  - （void）viewDidAppear：（BOOL）animated {
 [super viewDidAppear：animated]; 
 
 if（self.imageView.image == nil）{
 UIImagePickerController * imagePickerController = [[UIImagePickerController alloc] init]; 
 imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext; 
 imagePickerController.delegate = self; 
 imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; // Defualt to Native Camera View 
 imagePickerController.showsCameraControls = NO; // removed cameras controlss 
 [self presentViewController：imagePickerController animated：NO completion：nil]; 
} 
 
 else {
 
} 
 
} 
 
  - （void）imagePickerControllerDidCancel：（UIImagePickerController * ）picker {
 [self dismissViewControllerAnimated：YES completion：nil]; 
} 
 
  - （void）imagePickerController：（UIImagePickerController *）picker didFinishPickingMediaWithInfo：（NSDictionary< NSString *，id> *）info {
 UIImage * image = [info valueForKey： UIImagePickerControllerOriginalImage]; 
 self.imageView.image = image; 
 [self dismissViewControllerAnimated：YES completion：nil]; 
} 
 
 
 
  - （void）didReceiveMemoryWarning {
 [super didReceiveMemoryWarning]; 
 //处理可以重新创建的任何资源。 
} 
 
 @end 
  

解决方案>

您不能使用 UIImagePickerController 在自定义 UIView 您需要使用 AVFoundation 框架在自定义 UIView 中显示摄像机。

Having trouble carrying out a build I am trying to complete.

I have the build 1 and build 2 complete.

Build 1 - A simple blank screen with two text boxes with alignment constraints

Build 2 - When application is run it calls the native back camera of an IOS device.

My third build is these two previous builds together as one, where the native camera shows a live video feed and over layed is the two text boxes with their alignment constraints.

I am unsure how to bring the two bits of code together.

The code i currently have:

Build 1 - .h File

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (strong, nonatomic) IBOutlet UIView *TestTextBox;

@property (weak, nonatomic) IBOutlet UITextView *TestTetBox2;

@end

Build 1 - .m file

#import "ViewController.h"

@interface ViewController ()

@end



@implementation ViewController

@synthesize TestTextBox;

@synthesize TestTetBox2;


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

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

@end

Build 2 - .h file

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property (strong, nonatomic) IBOutlet UIImageView *imageView;


@end

Build 2 - .m file

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];

    if (self.imageView.image == nil) {
        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
        imagePickerController.modalPresentationStyle = UIModalPresentationCurrentContext;
        imagePickerController.delegate = self;
        imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; //Defualts to Native Camera View
        imagePickerController.showsCameraControls = NO; //removes camera controlls
        [self presentViewController:imagePickerController animated:NO completion:nil];
    }

    else{

    }

}

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

-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info{
    UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];
    self.imageView.image = image;
    [self dismissViewControllerAnimated:YES completion:nil];
}



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

@end

解决方案

You cannot present the camera in a custom UIView using the UIImagePickerController. You need to use AVFoundation framework to present a camera in a custom UIView.

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