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====== Map Suite Android Edition Quick Start Guide ======

<div msgbox>The Map Suite Android Edition illustrated QuickStart Guide will guide you through the process of creating a sample application and will help you become familiar with Map Suite. This edition of the QuickStart Guide supports Android Edition 9.0.0.0 and higher, and will show you how to create an Android application using Map Suite Android Edition.

If you want to build an iOS application using the standard Map Suite iOS Edition product, please see the [[Map Suite iOS Edition Quick Start Guide|iOS QuickStart Guide]] instead.</div>

Welcome to Map Suite™ from ThinkGeo, a full-featured mapping control that makes it easy for any Microsoft .NET developer to add mapping functionality to a Microsoft .NET application quickly and efficiently. Using the intuitive object model, even developers inexperienced with Geographic Information Systems (GIS) can have fully functional maps working in minutes.

This guide will help you quickly get started building your own spatially aware applications. Like any new software, there will be some learning along the way.

How do we begin taking advantage of the power of Map Suite? The best way to learn is to make a sample application with it.

Before we get started, make sure you've installed the [[ThinkGeo Product Center]] and that you've either started an evaluation or activated a full license of Map Suite Android Edition.  By default, this will install the Map Suite Android Edition 9.0 assemblies to //C:\Program Files (x86)\ThinkGeo\Map Suite 9.0\Map Suite Android//.

===== Download the Sample =====
<faicon fa fa-download  fa-lg> {{:File:HelloWorld Android.zip|Download Sample Code From This Exercise}} //(1.5 MB)//

===== Setting up the Environment =====
Please follow our [[Map Suite Android Edition Installation Guide|Android Edition Installation Guide]] for Xamarin Android development environment.

Let's start by creating a new Android project in Microsoft Visual Studio (2012 or newer) named HelloWorld (see Figure 1). We can create the project with .NET Framework 4.5.

{{androidedition:QSG_Android_Img01.png}}
\\
//Figure 1. Creating a new project in the Visual Studio IDE.//

The project HelloWorld is created in a new solution called HelloWorld. The wizard creates a single Android Application. Choose Android version (4.0.3 or higher) for the project:

{{androidedition:QSG_Android_Select_API.png}}

Next we need to prepare our map data. There are two ways to copy data to phone or tablet. The first way is using android ddms tool. We can find the tool under "[android-sdk]\tools\ddms.bat". 

Open the tool, and use File Explorer to add data.

{{androidedition:QSG_Android_AddData1.jpg}}

Create a new folder under sdcard named "Android Sample".

{{androidedition:QSG_Android_AddData2.jpg}}

Next, create a new folder named "GetStarted" under "Android.Sample", and push these files onto Device:

{{androidedition:QSG_Android_AddData3.jpg}}

The second way to copy data to phone or tablet is by using code. Create a new folder named AppData under "Assets", then add the map data to it. Make sure the resources’ build action is AndroidAsset.

{{androidedition: QSG_Android_PrepareData.jpg}}

Then we can use code to copy data to a special location. There are two kinds of data paths:

One is under our application, like "/data/data/HelloWorld.HelloWorld/AppData/".

The other one is under the sdcard, like "/mnt/sdcard/Android.Sample/GetStarted/".

<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    // Copy the required Shapefiles to Device.
    string targetDirectory = (@"/mnt/sdcard/Android.Sample/GetStarted/");
    CopySampleData(targetDirectory);
}
</code>

This method will copy data to the target path, if the folder does not exist. 

<code csharp>
private void CopySampleData(string targetDirectory)
{
	if (!Directory.Exists(targetDirectory))
	{
		Directory.CreateDirectory(targetDirectory);
		foreach (string filename in Assets.List("AppData"))
		{
			Stream stream = Assets.Open("AppData/" + filename);
			FileStream fileStream = File.Create(Path.Combine(targetDirectory, filename));
			stream.CopyTo(fileStream);
			fileStream.Close();
			stream.Close();
		}
	}
}
</code>

===== Adding the Map View to our App =====
We need to add ProtableCore.dll and AndroidEdition.dll to the references. Right-click the Reference in Solution Explorer and select "Add Reference", navigate to the //C:\Program Files (x86)\ThinkGeo\Map Suite 9.0\Map Suite Android\Current Version\Managed Assemblies// folder, and select "MapSuitePortableCore.dll" and "AndroidEdition.dll".

{{androidedition:QSG_Android_AddReference.png}}

**Note: Although it is not a ThinkGeo assembly, you also need to add "System.Windows.dll " to the references. System.Windows can be found on the .NET tab of the Add Reference dialog. If you don't do this, you will get the following error when you compile the project:**"The type 'System.Collections.Specialized.INotifyCollectionChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e, Retargetable=Yes'."

{{androidedition:QSG_Android_AddSystemWindows.png}}

Open the Resources\layout\Main.axml file. Remove the default button node, and insert MapView node in the axml.

<code xml>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <thinkgeo.mapsuite.androidedition.MapView
        android:id="@+id/MapView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>
</LinearLayout>
</code>

Now we have our "AndroidEdition.dll" and "MapSuitePortableCore.dll" referenced and a MapView added.

===== Map Suite Android "Hello World" Sample =====
After completing this section, we'll be able to draw a map with the MapView using our own data. First, let's have a look at the data and the important objects we'll use.

==== Map Suite Android "Hello World" ====
The first step in creating our "Hello World" sample application is to set references to the ''MapSuite.Core'' and ''MapSuite.AndroidEdition'' workspaces at the very top of our code, since we'll use many classes within them. Set the reference like this:

<code csharp>
using ThinkGeo.MapSuite.Core;
using ThinkGeo.MapSuite.AndroidEdition;
</code>

==== Display World Map ====
Now, Let's add a base overlay to display the world map witch called "WorldMapKitOverlay".

<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    // Get MapView From Activity's View.
    MapView mapView = FindViewById<MapView>(Resource.Id.MapView);

    // Set the Map Unit to DecimalDegrees, the Shapefile’s unit of measure. 
    mapView.MapUnit = GeographyUnit.DecimalDegree;

    // Create a WorldMapKitOverlay.
    WorldMapKitOverlay worldMapKitOverlay = new WorldMapKitOverlay();

    // Add a WorldMapKitOverlay.
    mapView.Overlays.Add("WorldMapKit", worldMapKitOverlay);

    // Set a proper extent for the map. The extent is the geographical area you want it to display.
    mapView.CurrentExtent = new RectangleShape(5, 78, 30, 26);
}
</code>

If we compile and run what we have now, our map should look like the one below. (see Figure 3).

{{androidedition:QSG_Android_Img10.png}}
\\
//Figure 3. A simple map of Europe.//

==== Shapefiles ====
Map Suite Android Edition 9.0 supports multiple kinds of data sources. Here we will provide an introduction to Shapefiles, which we will use in this Quick Start Guide.

Maps are generally made up of shapes like lines (representing roads), dots (for points of interest, such as cities and towns at small scales), and polygons (delineating parks, etc.). Shapefiles store the coordinates that are used to draw or render these shapes. Shapefiles have a .shp extension. Shapefiles also come with two supplementary files that help Map Suite work with the data.

The first supplementary file is the .shx file. This file provides a simple index of the main Shapefile; it tells the Map Suite component when to start reading binary data and when to stop. It is much like a directory for reading the binary data, or a lookup mechanism.

The second supplementary file is the .dbf file. This file holds tabular data associated with the features in the main Shapefile. For example, a Shapefile might have the coordinates for drawing a road, while the .dbf file may tell you the name, length, and type of the road (county road, state road, interstate highway, etc.).

All three files need to reside in the same directory, but the Map Suite component only expects you to designate the name and file path of the main Shapefile. Next, when we discuss layers, you’ll start understanding a bit more about how maps are constructed in Map Suite using the shape data.

==== ShapeFileFeatureLayers ====
A ShapeFileFeatureLayer in a map correlates to a single Shapefile, such as a network of roads. Your feature layer will be superimposed on top of the base map. In fact, you can incorporate multiple feature layers in your web mapping application. Overlapping layers of different types features on a map, such as agricultural areas, rivers, and roads, is a powerful way to visualize and work with data.

You can think of layers much like actual terrain in the real world. The landscape could be considered a "base map", with "layers" of roads and rivers superimposed on it. Keep in mind that overlapping layers may obscure the layers below. Be sure to add them in a logical order so they can be visualized correctly. For example, make sure your roads are displayed on top of rivers, creeks and streams, so bridges will be visible on the map. While the order of overlapping layers won't be editable at the client end, the display of individual layers may be turned on or off by the end user.

How do we create and add layers? The general rule is to start big. Add polygon layers representing large areas, such as country or regional boundaries, as a first, "bottom" layer. Next, you may want to add layers with lines representing rivers and roads. Add the smallest and most specific features last, as the top layer. These may include points for cities or places of interest. Again, keep in mind that logic will dictate what works best.

==== Map ====
A Map object is the highest level object that encompasses layers and some other objects. For now, you can think of a Map as an interface providing access to a set of layers. It can render each layer and present you with a map based on actions performed, such as zooming in and out, or panning to another area.

==== Styles ====
While Shapefiles provide the coordinates for shapes, styles define their appearance. You can specify the color of a country, the width of a road, the shape (triangle, circle, cross etc.) of a point, and so on.

Map Suite has many preset styles built in, including styles for roads, rivers, cities, countries, and other features. This makes it easy to create great looking maps without a lot of hassle.

==== PresetZoomLevels ====
Styles define the way we visually represent the data, while ZoomLevels define the situation in which we want to display them. ZoomLevels allow for different levels of detail at different scales. For example, we can display small towns when zoomed in close, and omit them when zoomed out to the country level, to avoid cluttering the map.

Map Suite offers the 20 most common scales, from ZoomLevel01 to ZoomLevel20, at which you may want to change your display. What is scale? Scale is a ratio between the distance represented on the map and the corresponding distance on the ground, when measured in the same units. If a road is 10,000 inches long in the real world and a map depicts this length as 1 inch on the screen, then we say the scale of this map is 1:10,000. Now let's say ZoomLevel02 uses a scale of 1:500 and ZoomLevel03 uses a scale of 1:1200. In this situation a map with a scale of 1:1000 will match ZoomLevel03 - the ZoomLevel with the closest scale.

PresetZoomLevels has a very useful property called ZoomLevel.ApplyUntilZoomLevel, which you can easily use to extend your ZoomLevels. Let's say you want a particular style to be visible at ZoomLevel03 through ZoomLevel10. To make that work, simply code as follows:

<code csharp>
worldLayer.ZoomLevelSet.ZoomLevel03.DefaultAreaStyle = AreaStyles.Country1;
worldLayer.ZoomLevelSet.ZoomLevel03.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level10;
</code>

==== Display Countries On Map ====
Now let's look at a code sample to bring this concept to fruition. We'll look at Shapefiles relating to the entire world. In our example, we have one such Shapefile:

  * Worldwide country borders (Countries02.shp)

(NOTE: The data used here can be found in the attached sample above at "\Assets\AppData" folder. The data files' build action should be “AndroidAssets”.)

Our next step is to define and add our layers. All of our sample code is placed in the OnCreate method of the MainActivity.cs. So our MapView can load and render the data, we can add logic to check the data to avoid coping it every time.

<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    // Copy the required shapefiles to Device.
    string targetDirectory = (@"/mnt/sdcard/Android.Sample/GetStarted/");
    CopySampleData(targetDirectory);

    MapView mapView = FindViewById<MapView>(Resource.Id.MapView);
    mapView.MapUnit = GeographyUnit.DecimalDegree;

    WorldMapKitOverlay worldMapKitOverlay = new WorldMapKitOverlay();
    mapView.Overlays.Add("WorldMapKit", worldMapKitOverlay);

    // We create a new Layer and pass the path to a Shapefile into its constructor.
    ShapeFileFeatureLayer worldLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "cntry02.shp"));

    // Set the worldLayer with a preset Style, as AreaStyles.Country1 has a YellowGreen background and black border, our worldLayer will have the same render style.
    worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;

    // This setting will apply from ZoomLevel01 to ZoomLevel20, which means the map will be rendered with the same style no matter how far we zoom in or out.
    worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    // We need to create a LayerOverlayer to add the world layer.
    LayerOverlay overlay = new LayerOverlay();
    overlay.Opacity = 0.8;
    overlay.Layers.Add(worldLayer);

    mapView.Overlays.Add("Countries02", overlay);

    mapView.CurrentExtent = new RectangleShape(5, 78, 30, 26);
}
</code>

If we compile and run what we have now, our map should look like the one below. (see Figure 4).

{{androidedition:QSG_Android_Img08.png}}
\\
//Figure 4. A simple map of Europe.//

So what has occurred here? We've created a layer and added it to the Map, and the Map has rendered it according to its default style parameters. We've also used ZoomLevel to display the map the way we want.

**NOTE:** It is important that the MapUnit property of a Map object be set using the ''GeographyUnit'' Enumeration. This is because the coordinates stored in a Shapefile can be in decimal degrees (a format of latitude and longitude), feet, meters, or another unit system, and our map has no way to know what the Shapefile's unit of measurement is until we tell it. This information is normally found somewhere in the Shapefile's documentation (also referred to as its metadata), or within its supplemental data file, as discussed in the section on Shapefiles. It may also come as a separate .txt, .xml, or .html file that begins with the same file name as the main Shapefile.

==== Navigate the Map ====
Now you can display and navigate your map. Pan by dragging the map, zoom in by double-clicking, track zoom in by drawing a rectangle with your left mouse button mouse while holding the shift key, or zoom in and out with the mouse wheel. Very powerful for just couple lines of code, isn't it?

That was an easy start! Now let's add a second Shapefile to the sample, so we'll have a total of two layers:

  -World country borders ("Countries02.shp")
  - World capitals ("WorldCapitals.shp")

<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    string targetDirectory = (@"/mnt/sdcard/Android.Sample/GetStarted/");
    CopySampleData(targetDirectory);

    MapView mapView = FindViewById<MapView>(Resource.Id.MapView);
    mapView.MapUnit = GeographyUnit.DecimalDegree;

    WorldMapKitOverlay worldMapKitOverlay = new WorldMapKitOverlay();
    mapView.Overlays.Add("WorldMapKit", worldMapKitOverlay);

    ShapeFileFeatureLayer worldLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "cntry02.shp"));
    worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;
    worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    // Similarly, we use the presetPointStyle for cities.
    ShapeFileFeatureLayer capitalLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "capital.shp"));

    // These settings will apply from ZoomLevel01 to ZoomLevel20, which means city symbols will be rendered in the same style, no matter how far we zoom in or out.
    capitalLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital3;

    // We need to add both of the new layers to the Map's Static Overlay.
    capitalLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    // We need to create a LayerOverlayer to add the world layer.
    LayerOverlay overlay = new LayerOverlay();
    overlay.Opacity = 0.8;
    overlay.Layers.Add(worldLayer);
    overlay.Layers.Add(capitalLayer);

    mapView.Overlays.Add("Countries02", overlay);

    mapView.CurrentExtent = new RectangleShape(5, 78, 30, 26);
}
</code>

And the result is as following (Figure 5):

{{androidedition:QSG_Android_Img09.png}}
\\
//Figure 5. A map of Europe with the additional borders and capitals layers displayed.//

===== How to Use TextStyle =====
TextStyle is used to label items on map. While the features themselves are drawn from information in the Shapefile, they're labeled with feature names or other attributes contained in the .dbf file. For example, the Shapefile containing capitals of the world has a corresponding .dbf file with the field "CITY_NAME". We can use this field to label the cities on our map.

{{androidedition:QSG_WPFDesktop_Img10.png}}

Map Suite includes several built-in TextStyles to help us quickly apply attractive city labels. We can simply pick the TextStyle we like and use it.


<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    string targetDirectory = (@"/mnt/sdcard/Android.Sample/GetStarted/");
    CopySampleData(targetDirectory);

    MapView mapView = FindViewById<MapView>(Resource.Id.MapView);
    mapView.MapUnit = GeographyUnit.DecimalDegree;

    WorldMapKitOverlay worldMapKitOverlay = new WorldMapKitOverlay();
    mapView.Overlays.Add("WorldMapKit", worldMapKitOverlay);           

    ShapeFileFeatureLayer worldLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "cntry02.shp"));
    worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;
    worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    ShapeFileFeatureLayer capitalLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "capital.shp"));
    capitalLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.Capital3;
    capitalLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    // We create a new Layer for labeling the capitals.
    ShapeFileFeatureLayer capitalLabelLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "capital.shp"));
    // We use the preset TextStyle. Here we pass in the “CITY_NAME”, the name of the field containing the values we want to label the map with.
    capitalLabelLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = TextStyles.Capital3("CITY_NAME");
    capitalLabelLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
    // As the map is drawn by tiles, it needs to draw on the margin to make sure the text is complete after joining the tiles together.
    // Change the number below (to 0, for example) to better understand how this works.
    capitalLabelLayer.DrawingMarginPercentage = 50;

    LayerOverlay overlay = new LayerOverlay();
    overlay.Opacity = 0.8;
    overlay.Layers.Add(worldLayer);
    overlay.Layers.Add(capitalLayer);
    // Add the label layer to LayerOverlay.
    overlay.Layers.Add(capitalLabelLayer);

    mapView.Overlays.Add("Countries02", overlay);

    mapView.CurrentExtent = new RectangleShape(5, 78, 30, 26);
}
</code>

The result is as follows (Figure 6):

{{androidedition:QSG_Android_Img11.png}}
\\
//Figure 6. Europe map with TextStyle applied.//

Now that we know how to render text and symbols, let's create custom Styles and TextStyles. We'll also specify different ranges of ZoomLevels, and apply varying custom Styles and TextStyles to the same layer at different ZoomLevel ranges.

<code csharp>
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);

    string targetDirectory = (@"/mnt/sdcard/Android.Sample/GetStarted/");
    CopySampleData(targetDirectory);

    MapView mapView = FindViewById<MapView>(Resource.Id.MapView);
    mapView.MapUnit = GeographyUnit.DecimalDegree;

    WorldMapKitOverlay worldMapKitOverlay = new WorldMapKitOverlay();
    mapView.Overlays.Add("WorldMapKit", worldMapKitOverlay);

    ShapeFileFeatureLayer worldLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "cntry02.shp"));
    worldLayer.ZoomLevelSet.ZoomLevel01.DefaultAreaStyle = AreaStyles.Country1;
    worldLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    ShapeFileFeatureLayer capitalLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "capital.shp"));
    // We can customize our own Style. Here we pass in a color and size.
    capitalLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimpleCircleStyle(GeoColor.StandardColors.White, 7, GeoColor.StandardColors.Brown);
    // The Style we set here is available from ZoomLevel01 to ZoomLevel05. That means if we zoom in a bit more, it will no longer be visible.
    capitalLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level05;

    capitalLayer.ZoomLevelSet.ZoomLevel06.DefaultPointStyle = PointStyles.Capital3;
    // The Style we set here is available from ZoomLevel06 to ZoomLevel20. That means if we zoom out a bit more, it will no longer be visible.
    capitalLayer.ZoomLevelSet.ZoomLevel06.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    ShapeFileFeatureLayer capitalLabelLayer = new ShapeFileFeatureLayer(Path.Combine(targetDirectory, "capital.shp"));
    // We can customize our own TextStyle. Here we pass in the font, size, style and color.
    capitalLabelLayer.ZoomLevelSet.ZoomLevel01.DefaultTextStyle = TextStyles.CreateSimpleTextStyle("CITY_NAME", "Arial", 8, DrawingFontStyles.Italic, GeoColor.StandardColors.Black, 3, 3);
    // The TextStyle we set here is available from ZoomLevel01 to ZoomLevel05. 
    capitalLabelLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level05;

    capitalLabelLayer.ZoomLevelSet.ZoomLevel06.DefaultTextStyle = TextStyles.Capital3("CITY_NAME");
    // The TextStyle we set here is available from ZoomLevel06 to ZoomLevel20. 
    capitalLabelLayer.ZoomLevelSet.ZoomLevel06.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

    capitalLabelLayer.DrawingMarginPercentage = 50;

    LayerOverlay overlay = new LayerOverlay();
    overlay.Opacity = 0.8;
    overlay.Layers.Add(worldLayer);
    overlay.Layers.Add(capitalLayer);
    // Add the label layer to LayerOverlay.
    overlay.Layers.Add(capitalLabelLayer);

    mapView.Overlays.Add("Countries02", overlay);

    mapView.CurrentExtent = new RectangleShape(5, 78, 30, 26);
}
</code>

Can you imagine what the map will look like now? Below is the result. At first it looks like Figure 7, then like Figure 8 as you zoom in further.

{{androidedition:QSG_Android_Img12.png}}
\\
//Figure 7. Map of Europe before zooming out.//

{{androidedition:QSG_Android_Img13.png}}
\\
//Figure 8. Map of Europe after zooming out.//

===== Summary =====
You now know the basics of using the Map Suite Map control and can start adding this functionality to your own applications. Let's recap what we've learned about the object relationships and how the pieces of Map Suite work together:

  - It is of the utmost importance that the units (feet, meters, decimal degrees, etc.) be set properly for the Map control, based on the requirements of your data.
  - Shapefiles provide the data used by a Map control to render a map.
  - A Map is the basic control that contains all the other objects used to indicate how the map should be rendered.
  - A Map has one-to-many Layers. A Layer correlates one-to-one with a Shapefile (.shp).
  - A Layer can have one-to-many ZoomLevels. ZoomLevels help to define ranges (upper and lower scales) of when a Layer should be shown or hidden.


<faicon fa fa-download  fa-lg> {{:File:HelloWorld Android.zip|Download Sample Code From This Exercise}} //(1.5 MB)//
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