Xamarin Android popupwindow - crashes when inflated - xamarin

Question

I'm trying to create a pop up window that shows a clock (actually what i want is a countdown timer but one thing at a time!), the trouble is when i call the method to show the pop up window containing the clock, the app crashes.
The method is being called from an Activity not a fragment.
Here is the code:
public void clockPopup()
{
LayoutInflater inflater =(LayoutInflater)this.GetSystemService(Context.LayoutInflaterService);
View myPopup = inflater.Inflate (Resource.Layout.PopUpClockTimer, null);
RunOnUiThread (() => {
PopupWindow popup = new PopupWindow (myPopup);
});
}
The stack trace is as follows:
[mono] Unhandled Exception:
[mono] Android.Views.InflateException: Exception of type 'Android.Views.InflateException' was thrown.
[mono] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[mono] at Android.Runtime.JNIEnv.CallObjectMethod (IntPtr jobject, IntPtr jmethod, Android.Runtime.JValue[] parms) [0x00000] in <filename unknown>:0
[mono] at Android.Views.LayoutInflater.Inflate (Int32 resource, Android.Views.ViewGroup root) [0x00000] in <filename unknown>:0
[mono] at FrogPoint.Droid.MainActivity.clockPopup () [0x00020] in /Users/jakememery/Desktop/working Frogpoint/FrogPoint1.2_database/FindTheMonkey.Droid/MainActivity.cs:1548
[mono] at FrogPoint.Droid.MainActivity+<getBeaconData>c__async3.MoveNext () [0x00258] in /Users/jakememery/Desktop/working Frogpoint/FrogPoint1.2_database/FindTheMonkey.Droid/MainActivity.cs:1215
[mono] --- End of stack trace from previous location where exception was thrown ---
[mono] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[mono] at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <filename unknown>:0
[mono] at FrogPoint.Droid.MainActivity+<RangingBeaconsInRegion>c__async0.MoveNext () [0x0035d] in /Users/jakememery/Desktop/working Frogpoint/FrogPoint1.2_database/FindTheMonkey.Droid/MainActivity.cs:675
[mono] --- End of managed exception stack trace ---
[mono] android.view.InflateException: Binary XML file line #1: Error inflating class android.widget.AnalogClock
[mono] at android.view.LayoutInflater.createView(LayoutInflater.java:620)
[mono] at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
[mono] at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
[mono] at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
[mono] at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
[mono] at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)
[mono] at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)
[mono] at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
[mono] at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
[mono] at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
[mono] at dalvik.system.NativeStart.run(Native Method)
[mono] Caused by: java.lang.reflect.InvocationTargetException
[mono] at java.lang.reflect.Constructor.constructNative(Native Method)
[mono] at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
[mono] at android.view.LayoutInflater.createView(LayoutInflater.java:594)
[mono] ... 10 more
[mono] Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
[mono] at android.os.Handler.<init>(Handler.java:200)
[mono] at android.os.Handler.<init>(Handler.java:114)
[mono] at android.widget.AnalogClock.<init>(AnalogClock.java:57)
[mono] at android.widget.AnalogClock.<init>(AnalogClock.java:67)
Here is the XML i'm trying to inflate:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/customborder"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="1dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:orientation="vertical">
<TextView
android:id="#+id/textout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Time sensitive offer" />
<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/logo76" />
<AnalogClock
android:id="#+id/tabAnalogClock"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<DigitalClock
android:id="#+id/tabDigitalClock"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="#+id/dismiss"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Dismiss" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
Can anybody see where i'm going wrong here please?

Answer 1

It seems i simply needed to call the method like this:
RunOnUiThread (() => {
clockPopup();
});
It doesn't crash now. But unfortunately neither does it display the pop up. But that's for another post.

Answer 2

You are missing either:
popup.ShowAtLocation(...);
or
popup.ShowAsDropDown(...);
to actually display the popup window.