dandelion/app/src/main/java/com/github/dfa/diaspora_android/util/Helpers.java

/*
    This file is part of the Diaspora for Android.

    Diaspora for Android is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Diaspora for Android is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with the Diaspora for Android.

    If not, see <http://www.gnu.org/licenses/>.
 */
package com.github.dfa.diaspora_android.util;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;

import com.github.dfa.diaspora_android.R;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class Helpers {

    public static void animateToActivity(Activity from, Class to, boolean finishFromActivity) {
        Intent intent = new Intent(from, to);
        intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
        from.startActivity(intent);
        from.overridePendingTransition(R.anim.fadein, R.anim.fadeout);
        if (finishFromActivity) {
            from.finish();
        }
    }

    public static void loadUrlInExternalBrowser(Context context, String url) {
        try {
            Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            context.startActivity(browserIntent);
        } catch (Exception ignored) {
        }
    }

    public static File createImageFile() throws IOException {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("dd-MM-yy_HH-mm", Locale.getDefault()).format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File storageDir = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        return File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
        );
    }

    public static String readTextfileFromRawRessource(Context context, int rawRessourceId, String linePrefix, String linePostfix) {
        StringBuilder sb = new StringBuilder();
        String line = "";
        BufferedReader br = null;
        linePrefix = linePrefix == null ? "" : linePrefix;
        linePostfix = linePostfix == null ? "" : linePostfix;

        try {
            br = new BufferedReader(new InputStreamReader(context.getResources().openRawResource(rawRessourceId)));
            while ((line = br.readLine()) != null) {
                sb.append(linePrefix);
                sb.append(line);
                sb.append(linePostfix);
                sb.append("\n");
            }
        } catch (Exception ignored) {
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException ignored) {
                }
            }
        }
        return sb.toString();
    }

    public static String hexColorFromRessourceColor(Context context, int idColor){
        return "#" + Integer.toHexString(context.getResources().getColor(idColor) & 0x00ffffff);
    }
}