AsamUtils.java

package mil.nga.giat.asam.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;

import mil.nga.giat.asam.R;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;


public class AsamUtils {
    
    public static String readStream(InputStream stream) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(stream));
        StringBuilder contents = new StringBuilder();
        String line;
        while ((line = in.readLine()) != null) {
            contents.append(line);
        }
        return contents.toString();
    }
    
    public static boolean isEmpty(String string) {
        if (string == null || string.trim().equals("")) {
            return true;
        }
        return false;
    }
    
    public static String getCommaSeparatedStringFromIntegerList(List<Integer> mIntegers) {
        StringBuilder text = new StringBuilder();
        for (int i = 0; i < mIntegers.size(); i++) {
            text.append(mIntegers.get(i));
            if (i < mIntegers.size() - 1) {
                text.append(", ");
            }
        }
        return text.toString();
    }
    
    public static Bitmap drawNumberOnClusterMarker(Context context, int number) {
        String numberOfPoints = "" + number;
        float scale = context.getResources().getDisplayMetrics().density;
        Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.ic_cluster);
        Bitmap.Config bitmapConfig = bitmap.getConfig();
        if (bitmapConfig == null) {
            bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888;
        }
        bitmap = bitmap.copy(bitmapConfig, true);
        Canvas canvas = new Canvas(bitmap);
        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setColor(Color.rgb(255, 255, 255));
        paint.setTextSize((int)(AsamConstants.CLUSTER_TEXT_POINT_SIZE * scale));
        Rect bounds = new Rect();
        paint.getTextBounds(numberOfPoints, 0, numberOfPoints.length(), bounds);
        int centerX = (bitmap.getWidth() - bounds.width()) / 2;
        int centerY = (bitmap.getHeight() + bounds.height()) / 2;
        canvas.drawText(numberOfPoints, centerX, centerY, paint);
        return new BitmapDrawable(context.getResources(), bitmap).getBitmap();
    }
}