xamarin.android

问题 I am building a dialog in Mono for Android like this: AlertDialog.Builder builder = new AlertDialog.Builder(Context); builder.SetTitle(Context.GetString(Resource.String.MyTitle)); builder.SetMessage(Context.GetString(Resource.String.MyQuestion); //YES, not OK builder.SetPositiveButton(Android.Resource.String.Yes, new EventHandler<DialogClickEventArgs>((dlgSender, dlgEvt) => { doSomething();}); builder.SetNegativeButton(Context.GetString(Android.Resource.String.No), new EventHandler

问题 I am getting this error when creating an APK within Visual Studio: Failed to load signer "signer #1": C:\...\googleplay.keystore entry "googleplay" does not contain a key I am a longtime ASP.NET developer who is familiar with Visual Studio but this is my first Xamarin project. (I am not using Android Studio.) I am trying to deploy the Android build to Google Play. I have never uploaded an APK to Google Play so I cannot use Visual Studio's automatic deployment; I must perform a manual

问题 Is there any way to check if keyboard is open or not in Xamarin Forms? Are there any events getting fired when the keyboard opens or closes? If so, where can I find an example of it? 回答1: I don't believe that there's a Xamarin.Forms way of doing it. Anyway, for the different platforms (at least Android and iOS) there is a way to achieve what you want. Android Under android there is InputMethodManager class. You can obtain it from your activity var inputMethodManager = (InputMethodManager)this

问题 Is there any way to check if keyboard is open or not in Xamarin Forms? Are there any events getting fired when the keyboard opens or closes? If so, where can I find an example of it? 回答1: I don't believe that there's a Xamarin.Forms way of doing it. Anyway, for the different platforms (at least Android and iOS) there is a way to achieve what you want. Android Under android there is InputMethodManager class. You can obtain it from your activity var inputMethodManager = (InputMethodManager)this

问题 How can I create a dashed line to use as a separator for my list view? Example: 回答1: You could do this in custom renderer of listview. MyListViewRenderer.cs: public class MyListViewRenderer : ListViewRenderer { Context ctx; public MyListViewRenderer(Context context) : base(context) { ctx = context; } protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.ListView> e) { base.OnElementChanged(e); if (Control != null) { //var listView = Control as Android.Widget.ListView;

问题 I created Android app with Xamarin Forms. For release I use option "Bundle assemblies into native code". My apk have size - 17 Mb, without this option 33 Mb. Do I need to use obfuscation for my libraries or my code is protected? I searched a lot - but I did not find an exact answer. 回答1: Bundle Assemblies into Native Code means: When this option is enabled, assemblies are bundled into a native shared library. This option keeps your code safe; it protects managed assemblies by embedding them

问题 I am trying to implement a broadcast receiver that gets the broadcast when the device has been rebooted, but is not working (it is supposed to send me a toast when the device has rebooted) with the following code: Broadcast receiver: [BroadcastReceiver] public class RebootReceiver : BroadcastReceiver { public override void OnReceive(Context context, Intent intent) { if (Intent.ActionBootCompleted.Equals(intent.Action)) { Toast.MakeText( context, "Your app has been rebooted!", ToastLength.Long

问题 I have been seeking in forums to how to implement dynamic intervals on repeated notifications but I haven't found yet a precise answer or a "common" answer for this type of problem. My problem consist that I want to set dynamic intervals (intervals that change when the past interval has gone to be used) on my AlarmManager.SetRepeating() parameter, but as you should know SetRepeating() interval parameter is constant, so you can't change it later to other beacuse the method has already recieved

问题 I am doing live streaming for the youtube videos. By entering into the picture in picture mode the player pause the video with the Error UNAUTHORIZED_OVERLAY . VideoLayout.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/linear_youtube_rootlayout" android:orientation="vertical" android:background="@color/black" android:layout_width="match_parent" android:layout_height="match_parent"> <com.google.android.youtube.player.YouTubePlayerView android:id="

问题 I have buttons created by loop and each button it corresponds to a desk, so i have to able when i click a button i have to design spesific row of database how i add buttons: for (int i = 1; i < terasmasasayisi; i++) { var buttonteras = new Button { Text = i.ToString(), HeightRequest = 45, WidthRequest = 45, Margin = 5, BorderRadius = 100, };`` teras.Children.Add(button); } If i can set a relationship between the table number and i(desknumber), I can do this according to the id from my