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重写NFCHelper

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denggaofeng 2026-04-20 15:55:15 +08:00
parent 740f41a1d5
commit d28306b172
3 changed files with 245 additions and 37 deletions
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129
NFCLockDemoV2/Platforms/Android/MainActivity.cs
View File

@ -7,55 +7,138 @@ using Android.OS;
using Com.Lvcheng.Lock.Shared.Nfc.Example.Java;
using NFCLockDemoV2;
using NFCLockDemoV2.Platforms.Android;
using NFCLockDemoV2.ViewModels;
using Microsoft.Maui;
using Microsoft.Maui.Controls;
using System.Diagnostics;
namespace NFCLockAppV2;
[Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density, Exported = true)]
[IntentFilter(new[] { Intent.ActionMain }, Categories = new[] { Intent.CategoryLauncher })]
[IntentFilter(new[] { NfcAdapter.ActionNdefDiscovered }, Categories = new[] { Intent.CategoryDefault }, DataMimeType = "text/plain")]
[IntentFilter(new[] { NfcAdapter.ActionNdefDiscovered, NfcAdapter.ActionTechDiscovered, NfcAdapter.ActionTagDiscovered }, Categories = new[] { Intent.CategoryDefault }, DataMimeType = "text/plain")]
public class MainActivity : MauiAppCompatActivity
{
private NFCHelper? nfcHelper;
private NFCCallbacks? NFCCallbacks;
private NFCLockHelper nfcHelper;
private NFCCallbacks _callbacks;
//private NfcAdapter _nfcAdapter;
//private PendingIntent _pendingIntent;
//private string[][] _techLists = [[typeof(NfcA).FullName, typeof(NdefFormatable).FullName, typeof(MifareUltralight).FullName]];
//private IntentFilter[] _intentFilters = [new(NfcAdapter.ActionNdefDiscovered), new(NfcAdapter.ActionTechDiscovered), new(NfcAdapter.ActionTagDiscovered)];
//private volatile bool _processing = false;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
}
_callbacks = new NFCCallbacks();
nfcHelper = new NFCLockHelper(this, _callbacks);
//_nfcAdapter = NfcAdapter.GetDefaultAdapter(this);
//_pendingIntent = PendingIntent.GetActivity(this, 0, new Intent(this, typeof(MainActivity)).AddFlags(ActivityFlags.ReceiverReplacePending), PendingIntentFlags.Mutable);
private void InitializeNFC()
{
if (Microsoft.Maui.Controls.Application.Current?.Handler?.MauiContext?.Services != null)
{
NFCCallbacks = Microsoft.Maui.Controls.Application.Current.Handler.MauiContext.Services.GetService<NFCCallbacks>();
}
if (NFCCallbacks != null)
{
nfcHelper = new NFCHelper(this, NFCCallbacks);
}
}
protected override void OnResume()
{
base.OnResume();
// 确保NFC功能在每次恢复时都已初始化
InitializeNFC();
nfcHelper?.OnResume();
nfcHelper.OnResume();
//if (_nfcAdapter != null)
//{
// _nfcAdapter.EnableForegroundDispatch(this, _pendingIntent, _intentFilters, _techLists);
//}
}
protected override void OnPause()
{
base.OnPause();
nfcHelper?.OnPause();
nfcHelper.OnPause();
//if (_nfcAdapter != null)
//{
// _nfcAdapter.DisableForegroundDispatch(this);
//}
}
protected override void OnNewIntent(Intent intent)
{
base.OnNewIntent(intent);
nfcHelper?.OnNewIntent(intent);
nfcHelper.OnNewIntent(intent);
//if (!_processing)
//{
// if (intent != null && (intent.Action == NfcAdapter.ActionNdefDiscovered ||
// intent.Action == NfcAdapter.ActionTechDiscovered ||
// intent.Action == NfcAdapter.ActionTagDiscovered))
// {
// Task.Run(async () =>
// {
// try
// {
// _processing = true;
// Tag? tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
// if (tag != null)
// {
// NfcA? nfcA = NfcA.Get(tag);
// if (nfcA != null)
// {
// nfcA.Connect();
// nfcA.Timeout = 1000;
// Process(nfcA);
// }
// }
// }
// catch (Exception e)
// {
// _callbacks.OnLost();
// Console.WriteLine(e);
// }
// finally
// {
// await Task.Delay(2000);
// _processing = false;
// _callbacks.OnFinished();
// }
// });
// }
//}
}
private void Process(NfcA nfcA)
{
DeviceManagerWrapper wrapper = new DeviceManagerWrapper(nfcA);
try
{
Com.Lvcheng.Lock.Shared.Nfc.Result initRes = wrapper.Init();
if (initRes.Equals(Com.Lvcheng.Lock.Shared.Nfc.Result.Ok))
{
long? id;
bool? isNew;
int? mRssi;
// 无限循环，替代 do-while
while (true)
{
Com.Lvcheng.Lock.Shared.Nfc.Result getInfoRes = wrapper.Info;
if (!getInfoRes.Equals(Com.Lvcheng.Lock.Shared.Nfc.Result.Ok))
return;
_ = wrapper.Rssi;
id = wrapper.MGetId().LongValue();
isNew = wrapper.MGetIsNew().BooleanValue();
mRssi = wrapper.MGetRssi().IntValue();
// 判断是否继续循环
bool continueLoop = _callbacks.OnLoop(wrapper, id, isNew, mRssi);
System.Diagnostics.Debug.WriteLine("continueLoop:" + continueLoop);
// 不继续就退出循环
if (!continueLoop)
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}

22
NFCLockDemoV2/Platforms/Android/NFCCallbacks.cs
View File

@ -6,13 +6,13 @@ using Exception = System.Exception;
namespace NFCLockDemoV2.Platforms.Android
{
public class NFCCallbacks : Java.Lang.Object, INFCCallbacks
public class NFCCallbacks
{
private readonly MainViewModel mainViewModel;
private ViewModels.OperationType? Operation => mainViewModel.Operation;
public NFCCallbacks(MainViewModel mainViewModel)
public NFCCallbacks()
{
this.mainViewModel = mainViewModel;
mainViewModel = Application.Current?.Handler?.MauiContext?.Services.GetService<MainViewModel>();
}
public void OnFinished()
@ -24,7 +24,7 @@ namespace NFCLockDemoV2.Platforms.Android
mainViewModel.ArcProgress = 0;
}
public Java.Lang.Boolean? OnLoop(DeviceManagerWrapper? wrapper, Long? id, Java.Lang.Boolean? isNew, Integer? rssi)
public bool OnLoop(DeviceManagerWrapper? wrapper, long? id, bool? isNew, int? rssi)
{
try
{
@ -63,12 +63,12 @@ namespace NFCLockDemoV2.Platforms.Android
{
mainViewModel.UpdateMessage("验证失败");
// 返回 false 手动结束 NFC 连接
return new Java.Lang.Boolean(false);
return false;
}
else
{
mainViewModel.UpdateMessage("充电失败");
return new Java.Lang.Boolean(false);
return false;
}
// 添加短暂延迟以避免过度频繁的循环
@ -89,7 +89,7 @@ namespace NFCLockDemoV2.Platforms.Android
{
mainViewModel.UpdateMessage("开锁失败");
}
return new Java.Lang.Boolean(false);
return false;
case ViewModels.OperationType.LOCK:
if (wrapper.Control(password, true) == Com.Lvcheng.Lock.Shared.Nfc.Result.Ok)
@ -100,7 +100,7 @@ namespace NFCLockDemoV2.Platforms.Android
{
mainViewModel.UpdateMessage("关锁失败");
}
return new Java.Lang.Boolean(false);
return false;
case ViewModels.OperationType.SET_PASSWORD:
if (wrapper.SetKey(password, "") == Com.Lvcheng.Lock.Shared.Nfc.Result.Ok)
@ -111,17 +111,17 @@ namespace NFCLockDemoV2.Platforms.Android
{
mainViewModel.UpdateMessage("设置密码失败");
}
return new Java.Lang.Boolean(false);
return false;
}
}
return new Java.Lang.Boolean(true);
return true;
}
catch (Exception ex)
{
Log.Error("NFCCallbacks", "Error in OnLoop: " + ex.Message);
mainViewModel.UpdateMessage("操作异常: " + ex.Message);
return new Java.Lang.Boolean(false);
return false;
}
}

125
NFCLockDemoV2/Platforms/Android/NFCLockHelper.cs Normal file
View File

@ -0,0 +1,125 @@
using Android.App;
using Android.Content;
using Android.Nfc;
using Android.Nfc.Tech;
using AndroidX.Activity;
using Com.Lvcheng.Lock.Shared.Nfc.Example.Java;
using NFCLockAppV2;
using NFCLockDemoV2.Platforms.Android;
namespace NFCLockDemoV2;
public class NFCLockHelper
{
private readonly MainActivity _activity;
private readonly NFCCallbacks _callbacks;
private readonly NfcAdapter _nfcAdapter;
private readonly PendingIntent _pendingIntent;
private string[][] _techLists = [[typeof(NfcA).FullName, typeof(NdefFormatable).FullName, typeof(MifareUltralight).FullName]];
private IntentFilter[] _intentFilters = [new(NfcAdapter.ActionNdefDiscovered), new(NfcAdapter.ActionTechDiscovered), new(NfcAdapter.ActionTagDiscovered)];
private volatile bool _processing = false;
public NFCLockHelper(MainActivity activity, NFCCallbacks callbacks)
{
_activity = activity;
_callbacks = callbacks;
_nfcAdapter = NfcAdapter.GetDefaultAdapter(_activity);
_pendingIntent = PendingIntent.GetActivity(_activity, 0, new Intent(_activity, typeof(MainActivity)).AddFlags(ActivityFlags.ReceiverReplacePending), PendingIntentFlags.Mutable);
}
public void OnResume()
{
if (_nfcAdapter != null)
{
_nfcAdapter.EnableForegroundDispatch(_activity, _pendingIntent, _intentFilters, _techLists);
}
}
public void OnPause()
{
if (_nfcAdapter != null)
{
_nfcAdapter.DisableForegroundDispatch(_activity);
}
}
public void OnNewIntent(Intent intent)
{
if (!_processing)
{
if (intent != null && (intent.Action == NfcAdapter.ActionNdefDiscovered ||
intent.Action == NfcAdapter.ActionTechDiscovered ||
intent.Action == NfcAdapter.ActionTagDiscovered))
{
Task.Run(async() =>
{
try
{
_processing = true;
Tag? tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
if (tag != null)
{
NfcA? nfcA = NfcA.Get(tag);
if (nfcA != null)
{
nfcA.Connect();
nfcA.Timeout = 1000;
Process(nfcA);
}
}
}
catch (Exception e)
{
_callbacks.OnLost();
Console.WriteLine(e);
}
finally
{
await Task.Delay(2000);
_processing = false;
_callbacks.OnFinished();
}
});
}
}
}
private void Process(NfcA nfcA)
{
DeviceManagerWrapper wrapper = new DeviceManagerWrapper(nfcA);
try
{
Com.Lvcheng.Lock.Shared.Nfc.Result initRes = wrapper.Init();
if (initRes.Equals(Com.Lvcheng.Lock.Shared.Nfc.Result.Ok))
{
long? id;
bool? isNew;
int? mRssi;
while (true)
{
Com.Lvcheng.Lock.Shared.Nfc.Result getInfoRes = wrapper.Info;
if (!getInfoRes.Equals(Com.Lvcheng.Lock.Shared.Nfc.Result.Ok))
return;
_ = wrapper.Rssi;
id = wrapper.MGetId().LongValue();
isNew = wrapper.MGetIsNew().BooleanValue();
mRssi = wrapper.MGetRssi().IntValue();
bool continueLoop = _callbacks.OnLoop(wrapper, id, isNew, mRssi);
if (!continueLoop)
break;
}
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
}