Android Open Source - maps-app-android Progress Dialog Fragment

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Apache License - 2.0 TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by...

Java Source Code

/* Copyright 1995-2014 Esri
 *//from   w  w  w.j  a  va2 s  . co  m
 * 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.
 *
 * For additional information, contact:
 * Environmental Systems Research Institute, Inc.
 * Attn: Contracts Dept
 * 380 New York Street
 * Redlands, California, USA 92373
 *
 * email: contracts@esri.com
 *
 */

package com.esri.android.mapsapp.dialogs;

import android.app.Activity;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.os.Bundle;

/**
 * Implements a dialog that shows a progress indicator and a message. The dialog host (Activity or Fragment) needs to
 * implement OnCancelListener if it wants to be notified when the progress dialog is canceled.
 */
public class ProgressDialogFragment extends DialogFragment {
  private static final String KEY_PROGRESS_MESSAGE = "KEY_PROGRESS_MESSAGE";

  private OnCancelListener mOnCancelListener;

  private ProgressDialogFragment() {
  }

  /**
   * Creates a new instance of ProgressDialogFragment.
   * 
   * @param message the progress message
   * @return an instance of ProgressDialogFragment
   */
  public static ProgressDialogFragment newInstance(String message) {
    ProgressDialogFragment dlg = new ProgressDialogFragment();

    Bundle args = new Bundle();
    args.putString(KEY_PROGRESS_MESSAGE, message);

    dlg.setArguments(args);
    return dlg;
  }

  @Override
  public Dialog onCreateDialog(Bundle savedInstanceState) {

    Bundle args = getArguments();
    String msg = args.getString(KEY_PROGRESS_MESSAGE);

    ProgressDialog progressDlg = new ProgressDialog(getActivity());
    progressDlg.setIndeterminate(true);
    progressDlg.setMessage(msg);
    progressDlg.setCanceledOnTouchOutside(false);

    return progressDlg;
  }

  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);

    // check if the host activity or fragment implements OnCancelListener
    //
    Fragment targetFragment = getTargetFragment();
    if (targetFragment instanceof OnCancelListener) {
      mOnCancelListener = (OnCancelListener) targetFragment;
    } else if (activity instanceof OnCancelListener) {
      mOnCancelListener = (OnCancelListener) activity;
    }
  }

  @Override
  public void onCancel(DialogInterface dialog) {
    super.onCancel(dialog);

    if (mOnCancelListener != null) {
      mOnCancelListener.onCancel(dialog);
    }
  }

  /**
   * Helper method to show a progress dialog with a message.
   * 
   * @param activity
   * @param message
   * @param tag
   */
  public static void showDialog(Activity activity, String message, String tag) {
    showDialog(activity, message, tag, true);
  }

  /**
   * Helper method to show a progress dialog with a message.
   * 
   * @param activity
   * @param message
   * @param tag
   * @param cancelable
   */
  public static void showDialog(Activity activity, String message, String tag, boolean cancelable) {
    ProgressDialogFragment progressDlg = new ProgressDialogFragment();

    Bundle args = new Bundle();
    args.putString(ProgressDialogFragment.KEY_PROGRESS_MESSAGE, message);
    progressDlg.setArguments(args);
    progressDlg.setCancelable(cancelable);

    progressDlg.show(activity.getFragmentManager(), tag);
  }

  /**
   * Helper method to hide a progress dialog.
   * 
   * @param activity
   * @param tag
   */
  public static void hideDialog(Activity activity, String tag) {
    FragmentManager fM = activity.getFragmentManager();
    DialogFragment dlg = (DialogFragment) fM.findFragmentByTag(tag);
    if (dlg != null) {
      dlg.dismiss();
    }
  }
}

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