Animate Camera Android Maps
I have some cases which give problems though: when the points are too far away, the map centers on max zoom level on the barycenter of those points. For example: I have 10 points in France and 2 points in Hawai. Maps centers more or less on the caribeans at min zoom level. Hence on screen I got nothing shown, the user has to scroll to actually see something is there.
Is there a way to get the map to zoom out far enough so that I can see all points (that would be prefered)
Or: which would be the best way to filter out those cases where just a few points are very far away from the majority and pick a set of point to zoom on (in my example, I would choose to zoom on the 10 points in France and forget about the ones in Hawai).
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Put all the LatLng of the markers in the list and pass them to this method and at the last line in the
I have done something similar before where I had ~4500 markers and wanted to select those within a certain distance of a specific location. Took that code and generalized it to be used with any kind of Markers.
If you already know a postition that you would like to zoom in to, then this method does the same as above. This method is way less CPU heavy as it only has to do a O(n) run through all the markers and compare them to the given position.
New Google Maps Features Including Immersive View, Live View Updates, Electric Vehicle Charging Tools And Glanceable Directions
Again, use the well known LatLngBounds to determine how much you need to zoom after using one of the filtering algorithms above.
Based on some ideas from cYrixmorten, I have simplified the problem because I know the map can accomodate at least 4000km of surface. So here is the function to build the list of ignored webcams (then I simply ignore that webcam for the camera bounds computation but still add the marker so that it is on the map if the user moves).Many similar questions seem to have been asked on SO before (most notably android google maps not loading the map when using GoogleMap.AnimateCamera() and How can I smoothly pan a GoogleMap in Android?), but none of the answers or comments posted throughout those threads have given me a firm idea of how to do this.
But like the OP of the first link above, all I get is a gray or very blurry map until the animation completes, even if I slow it down to tens of seconds long!
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I've managed to find and implement this helper class that does a nice job of allowing the tiles to render along the way, but even with a delay of 0, there is a noticeable lag between each animation.
Is there a better way to accomplish this seemingly-simple task? I'm thinking that perhaps I need to move my animations to a worker thread or something; would that help?
I've updated the code above in line with Andy's suggestions in the comments and although it works (albeit with the same lag and rendering issues), the final algorithm will need to be a bit more complex since I want to zoom out to the longitudinal delta's half-way point, then back in as the journey continues.
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Doing all these calculations at once, as well as smoothly rendering all the necessary tiles simultaneously, seems to be way too much for the cheap mobile phone that I'm testing on. Or is this a limitation of the API itself? In any case, how can I get all of this working smoothly, without any lag whatsoever between queued animations?
These are recorded from an emulator. I also sideloaded onto my phone (Samsumg SM-G960U) with similar results (using 1000 steps 0 delay).
So I don't think this meets your requirements entirely: there are some ambiguous tiles as they are brought in from the west.
Google Maps Tutorial With Example In Android Studio [step By Step]
It is in some ways useful to have insight into what Maps is doing with tiles. Insight can be provided by installing a simple
The same count which imo is what is desired. The full-out zoom appears twice as long because that's the midpoint repeating. There are a few anomalies though which require explaining (e.g. at around 110).
This is a chart of zoom as logged by the tile provider. So each x-axis point would represent a single tile fetch.
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