Question

是否可以使摄像头选择器看起来像拍摄视频时的样子。

现在是这样：

我想使它看起来像这样：

Answer 1

您不能完全像UIImagePickerController提供的屏幕截图那样工作，您将需要直接与AVFoundation一起使用并在相机预览周围创建UI。

Apple解释了here的基础知识，像one这样的网络上也有许多教程，它们将向您解释有关拍摄静止或生活照片所需的一切。

编辑：您可以使用UIImagePickerController进行管理

首先需要将showCameraControls属性设置为false。然后，您需要使用带有自己的控件的cameraOverlayView属性添加自己的叠加层（例如，UIButton，它是一个UIView），然后将诸如takePictures（）之类的功能分配给您的按钮以拍照。

<?php
        include('dbConfig.php');
        if(isset($_POST['key'])){
            if($_POST['key'] == 'calculate_cost'){

                $output="";

                $country_id = $_POST["country_id"];
                $state_id = $_POST["state_id"];
                $city_id = $_POST["city_id"];
                $hotel_id = $_POST["hotel_id"];
                $food_id = $_POST["food_id"];
                $totalCostV = (int)($_POST["totalCostV"]);
                $totalCostF = (int)($_POST["totalCostF"]);

                $sql = "SELECT cost FROM cost WHERE country_id='$country_id' 
                AND state_id='$state_id' AND city_id='$city_id'";
                $result = mysqli_query($db,$sql);
                if(mysqli_num_rows($result) > 0){

                    $data = mysqli_fetch_array($result);
                    $totalCostV = $totalCostV + (int)($data["cost"]);

                    $sql_next = "SELECT 
    countries.country_name,states.state_name,cities.city_name FROM countries 
    INNER JOIN states INNER JOIN cities ON countries.country_id = 
    ".$country_id." AND states.state_id= ".$state_id." AND cities.city_id= 
    ".$city_id."";
                    $result_next = mysqli_query($db,$sql_next);
                    if($result_next){
                        $data1 = mysqli_fetch_array($result_next);
                    }else{
                        $output.=mysqli_error($db);
                    }

                    $query = "SELECT cost FROM foods WHERE 
    hotel_id='$hotel_id' AND food_id='$food_id'"
                    $outcome = mysqli_query($db,$query);
                    if($outcome){
                        $data2 = mysqli_fetch_array($outcome);
                    }else{
                        $output.=mysqli_error($db);
                    }
                    $totalCostF = $totalCostF + (int)($data2["cost"]);

                    $query_next = "SELECT hotels.hotel_name,foods.food_name 
    FROM hotels INNER JOIN foods  ON hotels.hotel_id = ".$hotel_id." AND 
    foods.food_id= ".$food_id."";
                    $outcome_next = mysqli_query($db,$query_next);
                    if($outcome_next){
                        $data3 = mysqli_fetch_array($outcome_next);
                    }else{
                        $output.=mysqli_error($db);
                    }

                    $output .= '<tr>
                                    <td>'.$data1["country_name"].'</td>
                                    <td>'.$data1["state_name"].'</td>
                                    <td>'.$data1["city_name"].'</td>
                                    <td>'.$data["cost"].'</td>
                                    <td>'.$data3["hotel_name"].'</td>
                                    <td>'.$data3["food_name"].'</td>
                                    <td>'.$data2["cost"].'</td>
                                    <td><input type="button" value="Cancel" 
     class="btn btn-danger" style="width: 80px;"></td>
                              </tr>
                                   ';

                    $jsonArray = array(
                        'cost' => $output,
                        //'updation' => $output1,
                        'total_cost_v' =>$totalCostV,
                        'total_cost_f' =>$totalCostF

                    );
                    echo json_encode($jsonArray);

                 }
                 else{
                    $output.=mysqli_error($db);
                 }
            }
        }
     ?>

相机预览将需要转换为全屏显示（3倍缩放比例很大，但至少在iPhone X上使预览显示为全屏显示，您当然可以对其进行改进）：

imagePicker.sourceType = .camera
imagePicker.showsCameraControls = false
imagePicker.delegate = self
imagePicker.cameraOverlayView = yourOverlayWithWithButtons

请注意Apple文档中的cameraOverlayView属性：

仅当图像选择器的源类型设置为UIImagePickerController.SourceType.camera时，才能访问此属性。尝试访问其他源类型的此属性会导致引发invalidArgumentException异常。

看看UIImagePickerController，cameraOverlayView和showCameraControls上的Apple文档。

Answer 2

通过设置imagePicker.cameraViewTransform = CGAffineTransform（scaleX：1.5，y：1.5）

只有我能够获得想要的正确效果。

iOS Swift Camera Picker透明顶部和底部

2 个答案: