Android Question OSMDroid - MapView library still missing

Wosl said:

Did I missed a lib or something else?

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Wosl said:

Did I missed a lib or something else?

Wosl

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Wosl said:

Dear All,

as a beginner on OSMDroid I need some guidance to the OSMDroid project. I wanted as starting point to test the first example on this link

OSMDroid - MapView for B4A tutorial

You can find the OSMDroid library thread here: http://www.b4x.com/forum/additional-libraries-official-updates/16309-osmdroid-mapview-b4a.html#post92643. AIM: Create and initialize a MapView, enable the map zoom controller and multitouch controller, set a zoom level then center the map on a...

www.b4x.com

Before execution I copyied the lib files from link https://www.b4x.com/android/forum/threads/osmdroid-mapview-for-b4a.16309/#post92643
OSMDroid_3_0_8.jar
OSMDroid_3_0_8.xml
to my B4A additional libraries folder as usual.

However, I still receive for the declaration 'Dim MapView1 As MapView'
missing library OSMDRoid

Did I missed a lib or something else?

Wosl

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Wosl said:

Hallo All!

Thank you for your responses ... very helpful. As agarham said, the message disappers when I deleted NativeOSMDroid.xml and slf4j-android-1.5.8.xml (and jar) out of my additional lib folder. As mentioned in the threat later the native libraries are not required anymore from OSMDroid version 3.xx on.

However, I can compile without error and the app starts (example #1 and same for all following examples) but other than a grid I don't see anything. In other words, no tile is loaded at all (even for different sources) and I could not find on my sdcard a folder named osmdroid that should be the cache folder.

I'm missing something essential but I can't get it! Grrr!

The alternative:

Thank you to RBS regarding the other OSM viewer. I ran the attached example and it worked. More education on this custom view (cvMap) would be helpful for me. Do you have links to other examples showing more details how to use/customize it? I like to integrate in an existing development an OSM viewer. But here I need to use cvMap custom view without designer. This should possible but how? Another aspect is to use other tile servers or better offline tiles.

Any hint is appreciated.
Wosl

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Wosl said:

But here I need to use cvMap custom view without designer.

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RB Smissaert said:

>> But here I need to use cvMap custom view without designer. This should possible but how?
Just add the customview with code.

>> Another aspect is to use other tile servers or better offline tiles.
This is quite simple as well. I use offline tiles, stored in a SQLite database.

I found it easier to add the classes and code modules in the b4xlib to my project and have made quite a few changes to those classes.
Attached a .zip file of all those modules as I have it now.

RBS

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Wosl said:

Dear RBS

I tested the Open Street Map viewer with some success:
- Could get up and running the test sample
- Modified the module clMapShapeCircle to achieve an overlay circle of constance distance (always showing same radius in m/km independent of the zoom level). Of course, this modification is not perfect ('quick and dirty') but works.

But what not worked ..
- add the customview cvMap with code in a panel view (without designer - i know its not recommended). Can you help me out here?
- not all zoom levels are working (only level 12 to 16 of totally 17). The other levels returned with error message:
'ResponseError. Reason: , Response: Access denied. See https://operations.osmfoundation.org/policies/tiles/'
Is it not allowed to use them or is something missing (e.g. access rights)? Any suggestion?

Wosl

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Wosl said:

ad #1: the reason to avoid designer (which is a great tool !!) is only because I like to integrate a small OSM viewer in an older B4A application without any designer implication. However, a mix between with/without designer may be possible but makes this tweak more complex.

This is my try ...
- Create a AddToParent routine in the class

B4X:

Public Sub AddToParent(Parent As Activity, Left As Int, Top As Int, Width As Int, Height As Int)
     mBase = fxui.CreatePanel("mBase")
    Parent.AddView(mBase, Left, Top, Width, Height)
End Sub

- Define a panel (<100% dimension of screen)

Initialization without Designer:

''    Activity.LoadLayout("main")
    fcvPanel.Initialize("")
    Activity.Addview(fcvPanel,0dip,0dip,90%x,90%y)
    fcvPanel.Color=Colors.Cyan 
    fcvMap.Initialize(Me,"fcvMap")
    fcvMap.AddToParent(fcvPanel,0dip,0dip,100%x,100%y)

Result is a nice cyan colored panel but no map at all. When I open the LoadLayout (what I don't want to do) and comment the fvMap.initialize statement everything is fine. The map is showing up in the panel as expected. The fvMap.initialize statement seems to be wrong (wrong callback function?).

ad #2: I saw the SQLite usage in clsMapTileManager (which is a good solution) and I'm wondering why I run in such a situation. I have not changed anything in the tile management at all. When I compile and run the app again the resulting access problems are the same. The planned (integrated) usage is only about a small region in Germany. Small means maximum 25km radius around a fix point (could be a different point over time but mostly the same all times) meaning not so much tiles are impacted. This amount of tiles should be easily fetched through internet and stored in DB. I will look into the SQLite DB in detail after solving #1. Of course, my final idea is to use the tiles (in addition?) which are already stored on my device by the OSMAnd+ app (perfect for offline usage) with the hope that the data format matches ;-)

Wosl

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RB Smissaert said:

> in an older B4A application without any designer implication
What do you mean with: without any designer implication?

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RB Smissaert said:

> Create a AddToParent routine in the class
Which class?

RBS

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