Using coordinates from mouse click for QgsPointXY when creating point using PyQGIS

Question

I can not figure out how to input the coordinates through a mouse click instead of the code below. I am trying to create a temporary layer of a point from a mouse click. Everything seems to work except for that I can not figure the coordinates out.

from qgis.PyQt.QtCore import QVariant

vl = QgsVectorLayer("Point", "POI", "memory")    
pr = vl.dataProvider()
pr.addAttributes([QgsField("ID", QVariant.String)])
vl.updateFields() 
f = QgsFeature()
f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(10,10)))
f.setAttributes(["1"])

pr.addFeature(f)
vl.updateExtents() 
QgsProject.instance().addMapLayer(vl)

Answer 1

Combining lines in this link and your code, it looks as follows:

from qgis.gui import QgsMapToolEmitPoint
from qgis.PyQt.QtCore import QVariant

def display_point( pointTool ): 

    vl = QgsVectorLayer("Point", "POI", "memory")    
    pr = vl.dataProvider()
    pr.addAttributes([QgsField("ID", QVariant.String)])
    vl.updateFields() 
    f = QgsFeature()
    f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(pointTool[0],pointTool[1])))
    f.setAttributes(["1"])

    pr.addFeature(f)
    vl.updateExtents() 
    QgsProject.instance().addMapLayer(vl)

# a reference to our map canvas 
canvas = iface.mapCanvas() 

# this QGIS tool emits as QgsPoint after each click on the map canvas
pointTool = QgsMapToolEmitPoint(canvas)

pointTool.canvasClicked.connect( display_point )

canvas.setMapTool( pointTool )

After running it in Python Console of QGIS 3, it can be observed in following image, after 10 mouse clicks, there were produced 10 point layers as expected.