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Clustering on Google Map V2 Part-1
Introduction:
I had done with clustering on Google Map V1. After it is deprecated, i was searching for clustering on Google Map V2. And i found one library Android Maps Extensions. It is working great but depends on your implementation how will you use it in your project.
Drawback : This library use google-play-services.jar and has its own implementation of GoogleMap. Hence if there will any change happen in Map v2 API, takes time to implement that changes in this library.
Screenshots:
Getting Started:
- Download zip from above link and import library project.
- Import this library to project.
Note: No need to import google play service library project as this library contains it. - Get Map key from API Console.
Map Implementation:
- Activity extends FragmentActivity
- FragmentManager fm = getSupportFragmentManager();
- SupportMapFragment f = (SupportMapFragment) fm.findFragmentById(R.id.map); GoogleMap map = f.getExtendedMap();
Cluster Implementatioin:
map.setClustering(new ClusteringSettings().iconDataProvider(new DemoIconProvider(getResources())));
DemoIconProvider.java:
public class DemoIconProvider implements IconDataProvider {
private static final int[] res = { R.drawable.m1, R.drawable.m2, R.drawable.m3, R.drawable.m4, R.drawable.m5 };
private static final int[] forCounts = { 10, 100, 1000, 10000, Integer.MAX_VALUE };
private Bitmap[] baseBitmaps;
private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
private Rect bounds = new Rect();
private MarkerOptions markerOptions = new MarkerOptions().anchor(0.5f, 0.5f);
public DemoIconProvider(Resources resources) {
baseBitmaps = new Bitmap[res.length];
for (int i = 0; i < res.length; i++) {
baseBitmaps[i] = BitmapFactory.decodeResource(resources, res[i]);
}
paint.setColor(Color.WHITE);
paint.setTextAlign(Align.CENTER);
paint.setTextSize(resources.getDimension(R.dimen.text_size));
}
@Override
public MarkerOptions getIconData(int markersCount) {
Bitmap base;
int i = 0;
do {
base = baseBitmaps[i];
} while (markersCount >= forCounts[i++]);
Bitmap bitmap = base.copy(Config.ARGB_8888, true);
String text = String.valueOf(markersCount);
paint.getTextBounds(text, 0, text.length(), bounds);
float x = bitmap.getWidth() / 2.0f;
float y = (bitmap.getHeight() - bounds.height()) / 2.0f - bounds.top;
Canvas canvas = new Canvas(bitmap);
canvas.drawText(text, x, y, paint);
BitmapDescriptor icon = BitmapDescriptorFactory.fromBitmap(bitmap);
return markerOptions.icon(icon);
}
}
TO overcome from drawback, I found one library Clustering on Google Map V2 Part-2 .
It is easy to implement and more customizable.
Hello Karn,
ReplyDeleteI have read this blog, This blog is very helpful for me.
Keep it up posting new contents.
Thanks
There is no method like setClustring in Map v2
ReplyDeletedead link
ReplyDeleteits work proper or not ???
ReplyDelete