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   源码介绍

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using DJI.WindowsSDK;

// https://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x804 上介绍了“空白页”项模板

namespace App1
{
    /// <summary>
    /// 可用于自身或导航至 Frame 内部的空白页。
    /// </summary>
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
            DJISDKManager.Instance.SDKRegistrationStateChanged = Instance_SDKRegistrationEventAsync;
            //Replace app key with the real key registered. Make sure that the key is matched with your application's package id.
            DJISDKManager.Instance.RegisterApp("20eaef58f5b281fc6dfb2720");
        }
        private async void Instance_SDKRegistrationEventAsync(SDKRegistrationState state, SDKError resultCode)
        {
            if (resultCode == SDKError.NO_ERROR)
            {
                System.Diagnostics.Debug.WriteLine("Register app successfully.");
                DJISDKManager.Instance.ComponentManager.GetProductHandler(0).ProductTypeChanged = async delegate (object sender, ProductTypeMsg? value)
                {
                    await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async () =>
                    {
                        if (value != null && value?.value != ProductType.NONE)
                        {
                            System.Diagnostics.Debug.WriteLine("Aircraft is connected now.");
                            //You can load/display your pages relative to aircraft operations here.
                        }
                        else
                        {
                            System.Diagnostics.Debug.WriteLine("Aircraft is disconnected now.");
                            //You can hide your pages relative to aircraft operations, or provide users with some aircraft connection tips here.
                        }
                    });
                };
                //You need to get the product's connection state after activating, if you have already connected the aircraft before activate Windows SDK.
                var productType = (await DJISDKManager.Instance.ComponentManager.GetProductHandler(0).GetProductTypeAsync()).value;
                if (productType != null && productType?.value != ProductType.NONE)
                {
                    System.Diagnostics.Debug.WriteLine("Aircraft is connected now.");
                    //You can load/display your pages relative to aircraft operations here.
                }
            }
            else
            {
                System.Diagnostics.Debug.WriteLine("SDK register failed, the error is: ");
                System.Diagnostics.Debug.WriteLine(resultCode.ToString());
            }
        }
    }
}