jp.seikeidenron.androidtv.common.Utils.java Source code

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Here is the source code for jp.seikeidenron.androidtv.common.Utils.java

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/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package jp.seikeidenron.androidtv.common;

import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Point;
import android.media.MediaMetadataRetriever;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Display;
import android.view.WindowManager;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URLConnection;
import java.util.HashMap;

/**
 * A collection of utility methods, all static.
 */
public class Utils {
    private static final String TAG = Utils.class.getSimpleName();

    /*
     * Making sure public utility methods remain static
     */
    private Utils() {
    }

    /**
     * Returns the screen/display size
     */
    public static Point getDisplaySize(Context context) {
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        return size;
    }

    /**
     * Shows a (long) toast
     */
    public static void showToast(Context context, String msg) {
        Toast.makeText(context, msg, Toast.LENGTH_LONG).show();
    }

    /**
     * Shows a (long) toast.
     */
    public static void showToast(Context context, int resourceId) {
        Toast.makeText(context, context.getString(resourceId), Toast.LENGTH_LONG).show();
    }

    public static int convertDpToPixel(Context ctx, int dp) {
        float density = ctx.getResources().getDisplayMetrics().density;
        return Math.round((float) dp * density);
    }

    /**
     * Formats time in milliseconds to hh:mm:ss string format.
     */
    public static String formatMillis(int millis) {
        String result = "";
        int hr = millis / 3600000;
        millis %= 3600000;
        int min = millis / 60000;
        millis %= 60000;
        int sec = millis / 1000;
        if (hr > 0) {
            result += hr + ":";
        }
        if (min >= 0) {
            if (min > 9) {
                result += min + ":";
            } else {
                result += "0" + min + ":";
            }
        }
        if (sec > 9) {
            result += sec;
        } else {
            result += "0" + sec;
        }
        return result;
    }

    public static long getDuration(String videoUrl) {
        MediaMetadataRetriever mmr = new MediaMetadataRetriever();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            mmr.setDataSource(videoUrl, new HashMap<String, String>());
        } else {
            mmr.setDataSource(videoUrl);
        }
        return Long.parseLong(mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
    }

    public static boolean hasPermission(final Context context, final String permission) {
        return PackageManager.PERMISSION_GRANTED == context.getPackageManager().checkPermission(permission,
                context.getPackageName());
    }

    /*--- Network APIs ---*/
    public static JSONObject parseUrl(String urlString) {
        Log.v(TAG, "Parse URL: " + urlString);
        BufferedReader reader = null;

        try {
            java.net.URL url = new java.net.URL(urlString);
            URLConnection urlConnection = url.openConnection();
            reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
            //urlConnection.getInputStream(), "iso-8859-1"));
            return convertBufferedReaderToJSONObject(reader);
        } catch (Exception e) {
            Log.w(TAG, "Failed to parse the json for media list", e);
            return null;
        } finally {
            if (null != reader) {
                try {
                    reader.close();
                } catch (IOException e) {
                    Log.w(TAG, "JSON feed closed", e);
                }
            }
        }
    }

    public static JSONObject convertBufferedReaderToJSONObject(BufferedReader reader)
            throws IOException, JSONException {
        StringBuilder sb = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            sb.append(line);
        }
        String json = sb.toString();
        return new JSONObject(json);
    }

    public static int getDisplayWidthInPx(Activity activity) {
        DisplayMetrics metrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
        return metrics.widthPixels;
    }

    public static int getDisplayHeightInPx(Activity activity) {
        DisplayMetrics metrics = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
        return metrics.heightPixels;
    }
}