Tools.java

package fi.bitrite.android.ws.util;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.preference.PreferenceManager;
import android.text.Html;
import android.text.Spanned;
import android.text.format.DateUtils;
import android.util.Log;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.google.android.gms.analytics.HitBuilders;
import com.google.android.gms.analytics.Tracker;
import com.google.android.gms.maps.model.LatLng;

import java.util.Calendar;

import fi.bitrite.android.ws.BuildConfig;
import fi.bitrite.android.ws.R;
import fi.bitrite.android.ws.WSAndroidApplication;
import fi.bitrite.android.ws.activity.FeedbackActivity;

/**
 * General simple tools, mostly public methods.
 */
public class Tools {

    // Convert text ("About me" == Comments from user data) to form to add to TextView
    public static Spanned siteHtmlToHtml(String text) {
        return Html.fromHtml(text.replace("\n", "<br/>"));
    }

    /**
     * Return distance between two points in km/miles
     *
     * @param l1
     * @param l2
     * @param units (mi or km)
     * @return
     */
    static public int calculateDistanceBetween(Location l1, Location l2, String units) {
        double factor = units.equals("mi") ? 1609.34 : 1000;
        float meters = l1.distanceTo(l2);
        return (int) (meters / factor);
    }

    static public int calculateDistanceBetween(LatLng l1, Location l2, String units) {
        Location location = new Location("fromlatlng");
        location.setLatitude(l1.latitude);
        location.setLongitude(l1.longitude);
        return calculateDistanceBetween(location, l2, units);
    }

    static public boolean isNetworkConnected(Context context) {
        ConnectivityManager cm =
                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        boolean isConnected = activeNetwork != null &&
                activeNetwork.isConnectedOrConnecting();

        if (BuildConfig.DEBUG) {
            boolean simulateDisconnected = PreferenceManager.getDefaultSharedPreferences(context)
                    .getBoolean("developer_no_network", false);
            ;
            if (simulateDisconnected) {
                return false;
            }
        }

        return isConnected;
    }

    /**
     * Send a report to Google Analytics about  category/action
     *
     * @param context
     * @param category
     * @param action
     */
    static public void gaReportException(Context context, String category, String action) {

        Tracker exceptionTracker = ((WSAndroidApplication) context.getApplicationContext())
                .getTracker(WSAndroidApplication.TrackerName.APP_TRACKER);

        exceptionTracker.send(new HitBuilders.EventBuilder()
                        .setCategory(category)
                        .setAction(action)
                        .build()
        );
    }

    /**
     * Scale an image to its view
     * From https://argillander.wordpress.com/2011/11/24/scale-image-into-imageview-then-resize-imageview-to-match-the-image/
     *
     * @param view
     * @param boundBoxInDp
     */
    static public void scaleImage(ImageView view, int boundBoxInDp)
    {
        // Get the ImageView and its bitmap
        Drawable drawing = view.getDrawable();
        Bitmap bitmap = ((BitmapDrawable)drawing).getBitmap();

        // Get current dimensions
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();

        // Determine how much to scale: the dimension requiring less scaling is
        // closer to the its side. This way the image always stays inside your
        // bounding box AND either x/y axis touches it.
        float xScale = ((float) boundBoxInDp) / width;
        float yScale = ((float) boundBoxInDp) / height;
        float scale = (xScale <= yScale) ? xScale : yScale;

        // Create a matrix for the scaling and add the scaling data
        Matrix matrix = new Matrix();
        matrix.postScale(scale, scale);

        // Create a new bitmap and convert it to a format understood by the ImageView
        Bitmap scaledBitmap = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);
        BitmapDrawable result = new BitmapDrawable(scaledBitmap);
        width = scaledBitmap.getWidth();
        height = scaledBitmap.getHeight();

        // Apply the scaled bitmap
        view.setImageDrawable(result);

        // Now change ImageView's dimensions to match the scaled image
        RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) view.getLayoutParams();
        params.width = width;
        params.height = height;
        view.setLayoutParams(params);
    }

    /**
     * Get locale-sensitive date string in format Month Year
     *
     * @param context
     * @param timeInMillis
     * @return
     */
    public static String getDateAsMY(Context context, long timeInMillis) {
        int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_NO_MONTH_DAY;
        String result = DateUtils.formatDateTime(context, timeInMillis, flags);
        return result;
    }
}