Notification - 2.Android

參考 : https://dotblogs.com.tw/supershowwei/2018/02/08/144157

nuget : https://go.microsoft.com/fwlink/?linkid=865435

nuget : https://go.microsoft.com/fwlink/?linkid=865344

在ProjectName.Android 設定 AndroidManifest.xml

<application android:label="Hello.Android" android:icon="@drawable/icon">
    <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />
    <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">
      <intent-filter>
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
        <category android:name="${applicationId}" />
      </intent-filter>
    </receiver>
</application>

新增google-services.json 並將建置動作改為GoogleServicesJson

GoogleServiceJson 若找不到的話，需要重新開啟Visual Studio

在ProjectName.Android 設定 MainActivity.cs

protected override void OnCreate(Bundle bundle)
{
    TabLayoutResource = Hello.Droid.Resource.Layout.Tabbar;
    ToolbarResource = Hello.Droid.Resource.Layout.Toolbar;

    base.OnCreate(bundle);

    global::Xamarin.Forms.Forms.Init(this, bundle);

    FirebaseApp.InitializeApp(this);
    LoadApplication(new App());
}

在ProjectName.Android 建立 Class (FirebaseIIDService.cs)

[Service]
[IntentFilter(new[] { "com.google.firebase.INSTANCE_ID_EVENT" })]
public class FirebaseIIDService : FirebaseInstanceIdService
{
    public override void OnTokenRefresh()
    {
        //由FCM取得Token,或Token有更新時
        var refreshedToken = FirebaseInstanceId.Instance.Token;

        Log.Debug("KASE Log", refreshedToken);
    }
}

在ProjectName 建立 XAML

<StackLayout>
      <Button x:Name="butGoogleService" Text="check Google Service" Clicked="butGoogleService_Clicked"/>
      <Label x:Name="labGoogleService"  />

      <Button x:Name="btnFCM" Text="get FCM Token" Clicked="btnFCM_Clicked"></Button>
      <Label x:Name="labFCMToken"  />
</StackLayout>

在ProjectName XAML.cs

private void btnFCM_Clicked(object sender, EventArgs e)
{
    var token = FirebaseInstanceId.Instance?.Token;
    labFCMToken.Text = token;
    Log.Debug("KASE Log", token);
}

private void butGoogleService_Clicked(object sender, EventArgs e)
{
    int checkResult = GoogleApiAvailability.Instance.IsGooglePlayServicesAvailable(Android.App.Application.Context);
    if (checkResult != ConnectionResult.Success)
    {
        labGoogleService.Text =
            GoogleApiAvailability.Instance.IsUserResolvableError(checkResult) ?
            GoogleApiAvailability.Instance.GetErrorString(checkResult) :
            "未偵測到Google Play Services ,無法使用";
            return;
    }
    labGoogleService.Text = "Google Play Services 已偵測";
}