Show Popup Above Map Marker in Mapview

Show popup above map marker in MapView

The way I did is:

Put the markers at required GeoPoints by subclassing ItemizedOverlay, as described in http://developer.android.com/guide/tutorials/views/hello-mapview.html

Create a popup View by inflating from the layout:

View popUp = getLayoutInflater().inflate(R.layout.map_popup, map, false);

Use MapView.LayoutParams to position the popup with respect to GeoPoint in the ItemizedOverlay< OverlayItem >::onTap method. Popup will scroll automatically (without any additional code) when user scrolls the map. Basically popup gets tied to a GeoPoint, if user zooms, popup's position gets adjusted automatically.

MapView map = (MapView) findViewById(R.id.mapview);   
MapView.LayoutParams mapParams = new MapView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        <geopoint>,
                        <x offset if required>,
                        <y offset like pinHeight>,
                        MapView.LayoutParams.BOTTOM_CENTER);
map.addView(popUp, mapParams);

How to open a phoning pop up on clicking a maps marker in android?

I finally resolved it by showing the contacts that have a phone number registered :

    gMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {

    @Override
    public boolean onMarkerClick(Marker arg0) {

            Intent pickContactIntent = new Intent(Intent.ACTION_PICK, Uri.parse("content://contacts"));
            pickContactIntent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE); // Show user only contacts with phone numbers
            startActivityForResult(pickContactIntent, PICK_CONTACT_REQUEST);

        return true;

    }
}); 

How to show a balloon above a marker in a MapActivity? Isn't there a widget?

Here is the "the missing widget"...

• Balloons without icons:
  https://github.com/jgilfelt/android-mapviewballoons#readme

• Balloons with icons (extends Jeff
  Gilfelt's project):
  https://github.com/galex/android-mapviewballoons (Offline, see comments to this answer)

Popup or layout over marker Android

Define some variables to save last used marker and popupView

private Marker mMarker;
private PopupWindow mPopupWindow;
private int mWidth;
private int mHeight;

In our onMarkerClick:

@Override
public boolean onMarkerClick(Marker marker) {
    if (mPopupWindow != null) {
        mPopupWindow.dismiss();
    }
    View popupView;// inflate our view here
    PopupWindow popupWindow = new PopupWindow(popupView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

    Display display = getActivity().getWindowManager().getDefaultDisplay();
    Point size = new Point();
    display.getSize(size);
    popupView.measure(size.x, size.y);

    mWidth = popupView.getMeasuredWidth();
    mHeight = mPopupView.getMeasuredHeight();
    mMarker = marker;
    mPopupWindow = popupWindow;

    updatePopup();

    return true;
}

updatePopup method:

private void updatePopup() {
    if (mMarker != null && mPopupWindow != null) {
        // marker is visible
        if (mMap.getProjection().getVisibleRegion().latLngBounds.contains(mMarker.getPosition())) {
            if (!mPopupWindow.isShowing()) {
                mPopupWindow.showAtLocation(getView(), Gravity.NO_GRAVITY, 0, 0);
            }
            Point p = mMap.getProjection().toScreenLocation(mMarker.getPosition());
            mPopupWindow.update(p.x - mPopupWidth / 2, p.y - mPopupHeight + 100, -1, -1);
        } else { // marker outside screen
            mPopupWindow.dismiss();
        }
    }
}

We need CameraChangeListener:

mMap.setOnCameraChangeListener(this);

@Override
public void onCameraChange(CameraPosition cameraPosition) {
    ...
    updatePopup();
}

How to show an info window on tapping a marker on map?

Try this, modify according to your requirement:

@SuppressWarnings({ "deprecation" })
    @Override
    protected boolean onTap(int index)
    {
        CustomView customView=new CustomView(MyMap.this);
        absMap.removeAllViews();
        absMap.addView(customView);
        customView.setBackgroundResource(R.drawable.maplocation1);
        customView.setVisibility(View.INVISIBLE);

        customView.removeAllViews();

          absMap.invalidate();
          customView.bringToFront();
          customView.setVisibility(View.VISIBLE);
          TextView tv2=new TextView(MyMap.this);
        //  tv2.setText(overlayItemList.get(index).getTitle());
          tv2.setWidth(170);
          tv2.setSingleLine(true);
          tv2.setEllipsize(TruncateAt.END);
          tv2.setSingleLine(true);
          tv2.setSingleLine();

          tv2.setTextColor(Color.WHITE);
          tv2.setTextSize(14);
          tv2.setTypeface(Typeface.DEFAULT_BOLD);

          TextView tv1=new TextView(MyMap.this);
          tv1.setSingleLine();
          tv1.setWidth(170);
          tv1.setSingleLine(true);
          tv1.setEllipsize(TruncateAt.END);
          tv1.setSingleLine(true);
          tv2.setText(overlayItemList.get(index).getSnippet());

          tv1.setTextColor(Color.WHITE);
          tv1.setTextSize(12);
          tv1.setTypeface(Typeface.DEFAULT_BOLD);
          customView.setTag(overlayItemList.get(index).getTitle());
          customView.addView(tv2, new AbsoluteLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT,10,5));
          customView.addView(tv1, new AbsoluteLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT,10,25));
          customView.setLayoutParams(new MapView.LayoutParams( 250, 100, overlayItemList.get(index).getPoint(),-125,-137, MapView.LayoutParams.MODE_MAP|MapView.LayoutParams.TOP_LEFT));
          customView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) 
            {
            }
        });

    }

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