Think. Do. Learn.

Quick snippets of Android-related code and bookmarks to increase productivity.

Map

There are two ways to implement Google Maps into an Android app: MapFragment and MapView

Setup:

• Good Google Maps for Android, part 1 (Intro): How to implement Google maps from scratch, setup Google Developer Console to enabled the Maps SDK and get the API key
  • Add dependency: implementation 'com.google.android.gms:play-services-maps:16.1.0'
• Good Google Maps for Android, part 2 (User Location): How to access user's location, including setting up permissions

More resources:

• GoogleMap API Reference: https://developers.google.com/android/reference/com/google/android/gms/maps/GoogleMap

How to show map marker at street address

import android.location.Geocoder
import com.google.android.gms.maps.model.LatLng
import com.google.android.gms.maps.model.MarkerOptions

...

val markerName = "Example"
val streetAddress = "123 Fake St; Denver, CO 80246"
if (Geocoder.isPresent()) {
    val geocoder = Geocoder(requireContext())
    val addresses = geocoder.getFromLocationName(streetAddress, 1)
    val address = if (addresses == null) null else addresses[0]
    if (address != null) {
        val location = LatLng(address.latitude, address.longitude)
        map?.addMarker(MarkerOptions().position(location).title(markerName))
    }
} else {
    toast("Geocoder is not available on your device")
}

Navigation

View

Default sample page

Syntax Highlighting with Pygments

{% highlight language="java" %}
    public abstract class OrchidGenerator extends Prioritized implements OptionsHolder {
        
        protected final String key;
    
        protected final OrchidContext context;
    
        @Inject
        public OrchidGenerator(OrchidContext context, String key, int priority) {
            super(priority);
            this.key = key;
            this.context = context;
        }
    
        /**
         * A callback to build the index of content this OrchidGenerator intends to create.
         *
         * @return a list of pages that will be built by this generator
         */
        public abstract List<? extends OrchidPage> startIndexing();
    
        /**
         * A callback to begin generating content. The index is fully built and should not be changed at this time. The
         * list of pages returned by `startIndexing` is passed back in as an argument to the method.
         *
         * @param pages the pages to render
         */
        public abstract void startGeneration(Stream<? extends OrchidPage> pages);
    }
{% endhighlight %}

 1 public abstract class OrchidGenerator extends Prioritized implements OptionsHolder {
 2         
 3         protected final String key;
 4     
 5         protected final OrchidContext context;
 6     
 7         @Inject
 8         public OrchidGenerator(OrchidContext context, String key, int priority) {
 9             super(priority);
10             this.key = key;
11             this.context = context;
12         }
13     
14         /**
15          * A callback to build the index of content this OrchidGenerator intends to create.
16          *
17          * @return a list of pages that will be built by this generator
18          */
19         public abstract List<? extends OrchidPage> startIndexing();
20     
21         /**
22          * A callback to begin generating content. The index is fully built and should not be changed at this time. The
23          * list of pages returned by `startIndexing` is passed back in as an argument to the method.
24          *
25          * @param pages the pages to render
26          */
27         public abstract void startGeneration(Stream<? extends OrchidPage> pages);
28     }

Embed Github Gist

{% gist user="cjbrooks12" id="83a11f066388c9fe905ee1bab47ecca8" %}