Java tutorial
/* * Copyright (C) 2013 Google Inc. All Rights Reserved. * * 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 com.repkap11.repcast.utils; import android.app.Activity; import android.app.AlertDialog; import android.app.Application; import android.content.Context; import android.content.DialogInterface; import android.content.SharedPreferences; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.res.Configuration; import android.graphics.Point; import android.net.Uri; import android.support.v4.view.ViewCompat; import android.support.v7.widget.PopupMenu; import android.util.DisplayMetrics; import android.util.Log; import android.view.Display; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.view.WindowManager; import android.widget.Toast; import com.google.android.gms.cast.MediaInfo; import com.google.android.gms.cast.MediaQueueItem; import com.google.android.libraries.cast.companionlibrary.cast.VideoCastManager; import com.google.android.libraries.cast.companionlibrary.cast.exceptions.CastException; import com.google.android.libraries.cast.companionlibrary.cast.exceptions.NoConnectionException; import com.google.android.libraries.cast.companionlibrary.cast.exceptions.TransientNetworkDisconnectionException; import com.repkap11.repcast.R; import com.repkap11.repcast.activities.RepcastActivity; import com.repkap11.repcast.application.CastApplication; import com.repkap11.repcast.model.parcelables.JsonDirectory; import com.repkap11.repcast.queue.QueueDataProvider; import java.io.IOException; /** * A collection of utility methods, all static. */ public class Utils { private static final String TAG = "Utils"; /* * Making sure public utility methods remain static */ private Utils() { } @SuppressWarnings("deprecation") /** * Returns the screen/display size * */ public static Point getDisplaySize(Context context) { WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); Display display = wm.getDefaultDisplay(); int width = display.getWidth(); int height = display.getHeight(); return new Point(width, height); } /** * Returns {@code true} if and only if the screen orientation is portrait. */ public static boolean isOrientationPortrait(Context context) { return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT; } /** * Shows an error dialog with a given text message. */ public static void showErrorDialog(Context context, String errorString) { new AlertDialog.Builder(context).setTitle(R.string.error).setMessage(errorString) .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }).create().show(); } /** * Shows an "Oops" error dialog with a text provided by a resource ID */ public static void showOopsDialog(Context context, int resourceId) { new AlertDialog.Builder(context).setTitle(R.string.oops).setMessage(context.getString(resourceId)) .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }).setIcon(R.drawable.ic_action_alerts_and_states_warning).create().show(); } /** * A utility method to handle a few types of exceptions that are commonly thrown by the cast * APIs in this library. It has special treatments for * {@link TransientNetworkDisconnectionException}, {@link NoConnectionException} and shows an * "Oops" dialog conveying certain messages to the user. The following resource IDs can be used * to control the messages that are shown: * <p/> * <ul> * <li><code>R.string.connection_lost_retry</code></li> * <li><code>R.string.connection_lost</code></li> * <li><code>R.string.failed_to_perform_action</code></li> * </ul> */ public static void handleException(Context context, Exception e) { int resourceId; if (e instanceof TransientNetworkDisconnectionException) { // temporary loss of connectivity resourceId = R.string.connection_lost_retry; } else if (e instanceof NoConnectionException) { // connection gone resourceId = R.string.connection_lost; } else if (e instanceof RuntimeException || e instanceof IOException || e instanceof CastException) { // something more serious happened resourceId = R.string.failed_to_perform_action; } else { // well, who knows! resourceId = R.string.failed_to_perform_action; } Utils.showOopsDialog(context, resourceId); } /** * Gets the version of app. */ public static String getAppVersionName(Context context) { String versionString = null; try { PackageInfo info = context.getPackageManager().getPackageInfo(context.getPackageName(), 0 /* basic info */); versionString = info.versionName; } catch (Exception e) { // do nothing } return versionString; } /** * Shows a (long) toast. */ public static void showToast(Context context, int resourceId) { Toast.makeText(context, context.getString(resourceId), Toast.LENGTH_LONG).show(); } public static boolean hitTest(View v, int x, int y) { final int tx = (int) (ViewCompat.getTranslationX(v) + 0.5f); final int ty = (int) (ViewCompat.getTranslationY(v) + 0.5f); final int left = v.getLeft() + tx; final int right = v.getRight() + tx; final int top = v.getTop() + ty; final int bottom = v.getBottom() + ty; return (x >= left) && (x <= right) && (y >= top) && (y <= bottom); } /** * Show a popup to select whether the selected item should play immediately, be added to the * end of queue or be added to the queue right after the current item. */ public static void showQueuePopup(final Context context, View view, final MediaInfo mediaInfo) { final VideoCastManager castManager = VideoCastManager.getInstance(); final QueueDataProvider provider = QueueDataProvider.getInstance(); if (!castManager.isConnected()) { Log.w(TAG, "showQueuePopup(): not connected to a cast device"); return; } PopupMenu popup = new PopupMenu(context, view); popup.getMenuInflater() .inflate(provider.isQueueDetached() || provider.getCount() == 0 ? R.menu.detached_popup_add_to_queue : R.menu.popup_add_to_queue, popup.getMenu()); PopupMenu.OnMenuItemClickListener clickListener = new PopupMenu.OnMenuItemClickListener() { @Override public boolean onMenuItemClick(MenuItem menuItem) { QueueDataProvider provider = QueueDataProvider.getInstance(); MediaQueueItem queueItem = new MediaQueueItem.Builder(mediaInfo).setAutoplay(true) .setPreloadTime(CastApplication.PRELOAD_TIME_S).build(); MediaQueueItem[] newItemArray = new MediaQueueItem[] { queueItem }; String toastMessage = null; try { if (provider.isQueueDetached() && provider.getCount() > 0) { int i = menuItem.getItemId(); if (i == R.id.action_play_now || i == R.id.action_add_to_queue) { MediaQueueItem[] items = com.google.android.libraries.cast.companionlibrary.utils.Utils .rebuildQueueAndAppend(provider.getItems(), queueItem); // temporary castManager.queueLoad(items, provider.getCount(), // temporary MediaStatus.REPEAT_MODE_REPEAT_OFF, null); ((CastApplication) context.getApplicationContext()).loadQueue(items, provider.getCount()); } else { return false; } } else { if (provider.getCount() == 0) { // temporary castManager.queueLoad(newItemArray, 0, // temporary MediaStatus.REPEAT_MODE_REPEAT_OFF, null); ((CastApplication) context.getApplicationContext()).loadQueue(newItemArray, 0); } else { int currentId = provider.getCurrentItemId(); int i = menuItem.getItemId(); if (i == R.id.action_play_now) { castManager.queueInsertBeforeCurrentAndPlay(queueItem, currentId, null); } else if (i == R.id.action_play_next) { int currentPosition = provider.getPositionByItemId(currentId); if (currentPosition == provider.getCount() - 1) { //we are adding to the end of queue castManager.queueAppendItem(queueItem, null); } else { int nextItemId = provider.getItem(currentPosition + 1).getItemId(); castManager.queueInsertItems(newItemArray, nextItemId, null); } toastMessage = context.getString(R.string.queue_item_added_to_play_next); } else if (i == R.id.action_add_to_queue) { castManager.queueAppendItem(queueItem, null); toastMessage = context.getString(R.string.queue_item_added_to_queue); } else { return false; } } } } catch (NoConnectionException | TransientNetworkDisconnectionException e) { Log.e(TAG, "Failed to add item to queue or play remotely", e); } if (toastMessage != null) { Toast.makeText(context, toastMessage, Toast.LENGTH_SHORT).show(); } return true; } }; popup.setOnMenuItemClickListener(clickListener); popup.show(); } public static void showUpdateDialogIfNecessary(Activity activity) { try { SharedPreferences prefs = activity.getSharedPreferences("CHANGELOG", Context.MODE_PRIVATE); int currentVersionCode = activity.getPackageManager().getPackageInfo(activity.getPackageName(), 0).versionCode; boolean hasShownPrevious = prefs.getBoolean("has-shown-prefs-" + (currentVersionCode - 1), false); boolean hasShownCurrent = prefs.getBoolean("has-shown-prefs-" + currentVersionCode, false); //Log.e(TAG, "hasShownPrevious:" + hasShownPrevious + " hasShownCurrent:" + hasShownCurrent); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean("has-shown-prefs-" + currentVersionCode, true); editor.putBoolean("has-shown-prefs-" + (currentVersionCode - 1), true); if ((hasShownPrevious && !hasShownCurrent)) { AlertDialog d = new AlertDialog.Builder(activity) .setTitle("Changelog: App Version " + currentVersionCode) .setMessage(activity.getResources().getString(R.string.changelog_message)) .setCancelable(false).setNegativeButton("Close", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { } }).show(); //DisplayMetrics metrics = activity.getResources().getDisplayMetrics(); //int width = metrics.widthPixels; //int height = metrics.heightPixels; //Log.e(TAG, "Width:" + width + " Height:" + height); //d.getWindow().setLayout(width,height); } editor.apply(); } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } } }