Toaster.java

/*
 * Copyright 2012 Kevin Sawicki <kevinsawicki@gmail.com>
 *
 * 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.github.kevinsawicki.wishlist;

import android.app.Activity;
import android.content.Context;
import android.text.TextUtils;
import android.widget.Toast;

import java.text.MessageFormat;

import static android.widget.Toast.LENGTH_LONG;
import static android.widget.Toast.LENGTH_SHORT;

/**
 * Helper to show {@link Toast} notifications
 */
public class Toaster {

  private static void show(final Activity activity, final int resId,
      final int duration) {
    if (activity == null)
      return;

    final Context context = activity.getApplication();
    activity.runOnUiThread(new Runnable() {

      public void run() {
        Toast.makeText(context, resId, duration).show();
      }
    });
  }

  private static void show(final Activity activity, final String message,
      final int duration) {
    if (activity == null)
      return;
    if (TextUtils.isEmpty(message))
      return;

    final Context context = activity.getApplication();
    activity.runOnUiThread(new Runnable() {

      public void run() {
        Toast.makeText(context, message, duration).show();
      }
    });
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_LONG} duration
   *
   * @param activity
   * @param resId
   */
  public static void showLong(final Activity activity, int resId) {
    show(activity, resId, LENGTH_LONG);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_SHORT} duration
   *
   * @param activity
   * @param resId
   */
  public static void showShort(final Activity activity, final int resId) {
    show(activity, resId, LENGTH_SHORT);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_LONG} duration
   *
   * @param activity
   * @param message
   */
  public static void showLong(final Activity activity, final String message) {
    show(activity, message, LENGTH_LONG);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_SHORT} duration
   *
   * @param activity
   * @param message
   */
  public static void showShort(final Activity activity, final String message) {
    show(activity, message, LENGTH_SHORT);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_LONG} duration
   *
   * @param activity
   * @param message
   * @param args
   */
  public static void showLong(final Activity activity, final String message,
      final Object... args) {
    String formatted = MessageFormat.format(message, args);
    show(activity, formatted, LENGTH_LONG);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_SHORT} duration
   *
   * @param activity
   * @param message
   * @param args
   */
  public static void showShort(final Activity activity, final String message,
      final Object... args) {
    String formatted = MessageFormat.format(message, args);
    show(activity, formatted, LENGTH_SHORT);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_LONG} duration
   *
   * @param activity
   * @param resId
   * @param args
   */
  public static void showLong(final Activity activity, final int resId,
      final Object... args) {
    if (activity == null)
      return;

    String message = activity.getString(resId);
    showLong(activity, message, args);
  }

  /**
   * Show message in {@link Toast} with {@link Toast#LENGTH_SHORT} duration
   *
   * @param activity
   * @param resId
   * @param args
   */
  public static void showShort(final Activity activity, final int resId,
      final Object... args) {
    if (activity == null)
      return;

    String message = activity.getString(resId);
    showShort(activity, message, args);
  }
}