.NET MAUI에서 Android에서 바코드 읽기 및 쓰기

위의 MainPage.xaml 코드에서 우리는 체크박스가 생성된 바코드와 QR 코드가 PDF 형식으로 되어야 하는지 여부를 결정하는 것을 볼 수 있습니다. 다음으로, 라이센스 키를 설정합니다. 이 단계에서는 체험판 또는 유료 라이센스 키를 사용해 주세요.

코드는 barcodeInput 변수에서 값을 확인하고 가져온 후 CreateBarcode 메서드를 사용하여 바코드를 생성합니다. 마지막으로, SaveToDownloadsAsync 메서드를 호출하여 Android와 iOS 모두에 적절하게 파일을 저장합니다.

iOS에서는 문서를 Files 애플리케이션에 내보내기 위한 사용자 지정 파일 경로가 필요합니다.

using IronBarCode;
using System;
using System.IO;
using System.Threading.Tasks;
using Xamarin.Essentials;

namespace IronBarcodeMauiAndroid
{
    public partial class MainPage : ContentPage
    {
        public bool IsGeneratePdfChecked
        {
            get => generatePdfCheckBox.IsChecked;
            set
            {
                generatePdfCheckBox.IsChecked = value;
            }
        }

        public MainPage()
        {
            InitializeComponent();
            // Set the license key for IronBarcode, replace with your actual license key.
            License.LicenseKey = "IRONBARCODE-MYLICENSE-KEY-1EF01";
        }

        private async void WriteBarcode(object sender, EventArgs e)
        {
            try
            {
                if (!string.IsNullOrEmpty(barcodeInput.Text))
                {
                    // Create a barcode from the text input with the EAN13 encoding.
                    var barcode = BarcodeWriter.CreateBarcode(barcodeInput.Text, BarcodeEncoding.EAN13);

                    // Determine the file extension and data format based on the checkbox state.
                    string fileExtension = IsGeneratePdfChecked ? "pdf" : "png";
                    string fileName = $"Barcode_{DateTime.Now:yyyyMMddHHmmss}.{fileExtension}";
                    byte[] fileData = IsGeneratePdfChecked ? barcode.ToPdfBinaryData() : barcode.ToPngBinaryData();

                    // Save the generated barcode to the Downloads folder.
                    await SaveToDownloadsAsync(fileData, fileName);

                    await Application.Current.MainPage.DisplayAlert("Saved", "File saved to Downloads folder", "OK");
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        private async void WriteQRcode(object sender, EventArgs e)
        {
            try
            {
                if (!string.IsNullOrEmpty(qrInput.Text))
                {
                    // Create a QR code from the text input.
                    var barcode = QRCodeWriter.CreateQrCode(qrInput.Text);

                    // Determine the file extension and data format based on the checkbox state.
                    string fileExtension = IsGeneratePdfChecked ? "pdf" : "png";
                    string fileName = $"QRcode_{DateTime.Now:yyyyMMddHHmmss}.{fileExtension}";
                    byte[] fileData = IsGeneratePdfChecked ? barcode.ToPdfBinaryData() : barcode.ToPngBinaryData();

                    // Save the generated QR code to the Downloads folder.
                    await SaveToDownloadsAsync(fileData, fileName);

                    await Application.Current.MainPage.DisplayAlert("Saved", "File saved to Downloads folder", "OK");
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        private async void ReadBarcode(object sender, EventArgs e)
        {
            try
            {
                var options = new PickOptions
                {
                    PickerTitle = "Please select a file"
                };
                var file = await FilePicker.PickAsync(options);

                OutputText.Text = "";

                if (file != null)
                {
                    using var stream = await file.OpenReadAsync();

                    BarcodeResults result;

                    if (file.ContentType.Contains("image"))
                    {
                        // Read barcodes from an image file.
                        result = BarcodeReader.Read(stream);
                    }
                    else
                    {
                        // Read barcodes from a PDF file.
                        result = BarcodeReader.ReadPdf(stream);
                    }

                    string barcodeResult = "";
                    int count = 1;

                    // Retrieve and format the barcode reading results.
                    result.ForEach(x => { barcodeResult += $"Barcode {count}: {x.Value}\n"; count++; });

                    OutputText.Text = barcodeResult;
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        public async Task SaveToDownloadsAsync(byte[] fileData, string fileName)
        {
            var downloadsPath = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDownloads);
            var filePath = Path.Combine(downloadsPath.AbsolutePath, fileName);

            try
            {
                // Create the directory if it doesn't exist.
                if (!Directory.Exists(downloadsPath.AbsolutePath))
                {
                    Directory.CreateDirectory(downloadsPath.AbsolutePath);
                }

                // Save the file to the Downloads folder.
                await File.WriteAllBytesAsync(filePath, fileData);
            }
            catch (Exception ex)
            {
                // Log errors if file saving fails.
                System.Diagnostics.Debug.WriteLine("Error saving file: " + ex.Message);
            }
        }
    }
}

using IronBarCode;
using System;
using System.IO;
using System.Threading.Tasks;
using Xamarin.Essentials;

namespace IronBarcodeMauiAndroid
{
    public partial class MainPage : ContentPage
    {
        public bool IsGeneratePdfChecked
        {
            get => generatePdfCheckBox.IsChecked;
            set
            {
                generatePdfCheckBox.IsChecked = value;
            }
        }

        public MainPage()
        {
            InitializeComponent();
            // Set the license key for IronBarcode, replace with your actual license key.
            License.LicenseKey = "IRONBARCODE-MYLICENSE-KEY-1EF01";
        }

        private async void WriteBarcode(object sender, EventArgs e)
        {
            try
            {
                if (!string.IsNullOrEmpty(barcodeInput.Text))
                {
                    // Create a barcode from the text input with the EAN13 encoding.
                    var barcode = BarcodeWriter.CreateBarcode(barcodeInput.Text, BarcodeEncoding.EAN13);

                    // Determine the file extension and data format based on the checkbox state.
                    string fileExtension = IsGeneratePdfChecked ? "pdf" : "png";
                    string fileName = $"Barcode_{DateTime.Now:yyyyMMddHHmmss}.{fileExtension}";
                    byte[] fileData = IsGeneratePdfChecked ? barcode.ToPdfBinaryData() : barcode.ToPngBinaryData();

                    // Save the generated barcode to the Downloads folder.
                    await SaveToDownloadsAsync(fileData, fileName);

                    await Application.Current.MainPage.DisplayAlert("Saved", "File saved to Downloads folder", "OK");
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        private async void WriteQRcode(object sender, EventArgs e)
        {
            try
            {
                if (!string.IsNullOrEmpty(qrInput.Text))
                {
                    // Create a QR code from the text input.
                    var barcode = QRCodeWriter.CreateQrCode(qrInput.Text);

                    // Determine the file extension and data format based on the checkbox state.
                    string fileExtension = IsGeneratePdfChecked ? "pdf" : "png";
                    string fileName = $"QRcode_{DateTime.Now:yyyyMMddHHmmss}.{fileExtension}";
                    byte[] fileData = IsGeneratePdfChecked ? barcode.ToPdfBinaryData() : barcode.ToPngBinaryData();

                    // Save the generated QR code to the Downloads folder.
                    await SaveToDownloadsAsync(fileData, fileName);

                    await Application.Current.MainPage.DisplayAlert("Saved", "File saved to Downloads folder", "OK");
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        private async void ReadBarcode(object sender, EventArgs e)
        {
            try
            {
                var options = new PickOptions
                {
                    PickerTitle = "Please select a file"
                };
                var file = await FilePicker.PickAsync(options);

                OutputText.Text = "";

                if (file != null)
                {
                    using var stream = await file.OpenReadAsync();

                    BarcodeResults result;

                    if (file.ContentType.Contains("image"))
                    {
                        // Read barcodes from an image file.
                        result = BarcodeReader.Read(stream);
                    }
                    else
                    {
                        // Read barcodes from a PDF file.
                        result = BarcodeReader.ReadPdf(stream);
                    }

                    string barcodeResult = "";
                    int count = 1;

                    // Retrieve and format the barcode reading results.
                    result.ForEach(x => { barcodeResult += $"Barcode {count}: {x.Value}\n"; count++; });

                    OutputText.Text = barcodeResult;
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions and log the error.
                System.Diagnostics.Debug.WriteLine(ex);
            }
        }

        public async Task SaveToDownloadsAsync(byte[] fileData, string fileName)
        {
            var downloadsPath = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDownloads);
            var filePath = Path.Combine(downloadsPath.AbsolutePath, fileName);

            try
            {
                // Create the directory if it doesn't exist.
                if (!Directory.Exists(downloadsPath.AbsolutePath))
                {
                    Directory.CreateDirectory(downloadsPath.AbsolutePath);
                }

                // Save the file to the Downloads folder.
                await File.WriteAllBytesAsync(filePath, fileData);
            }
            catch (Exception ex)
            {
                // Log errors if file saving fails.
                System.Diagnostics.Debug.WriteLine("Error saving file: " + ex.Message);
            }
        }
    }
}

프로젝트 실행

이것은 프로젝트를 실행하고 바코드 기능을 사용하는 방법을 보여줄 것입니다.