Android Open Source - final_app History Activity

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The source code is released under:

CC0 1.0 Universal Statement of Purpose The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent...

Java Source Code

/*
 * Copyright 2012 ZXing authors//  w  w w .j  av a  2  s.  c  o  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.
 */

package com.google.zxing.client.android.history;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.google.zxing.client.android.CaptureActivity;
import com.google.zxing.client.android.Intents;
import com.google.zxing.client.android.R;

public final class HistoryActivity extends ListActivity {

  private static final String TAG = HistoryActivity.class.getSimpleName();

  private HistoryManager historyManager;
  private ArrayAdapter<HistoryItem> adapter;
  private CharSequence originalTitle;

  @Override
  protected void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    this.historyManager = new HistoryManager(this);
    adapter = new HistoryItemAdapter(this);
    setListAdapter(adapter);
    View listview = getListView();
    registerForContextMenu(listview);
    originalTitle = getTitle();
  }

  @Override
  protected void onResume() {
    super.onResume();
    reloadHistoryItems();
  }

  private void reloadHistoryItems() {
    Iterable<HistoryItem> items = historyManager.buildHistoryItems();
    adapter.clear();
    for (HistoryItem item : items) {
      adapter.add(item);
    }
    setTitle(originalTitle + " (" + adapter.getCount() + ')');
    if (adapter.isEmpty()) {
      adapter.add(new HistoryItem(null, null, null));
    }
  }

  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    if (adapter.getItem(position).getResult() != null) {
      Intent intent = new Intent(this, CaptureActivity.class);
      intent.putExtra(Intents.History.ITEM_NUMBER, position);
      setResult(Activity.RESULT_OK, intent);
      finish();
    }
  }

  @Override
  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
    int position = ((AdapterView.AdapterContextMenuInfo) menuInfo).position;
    if (position >= adapter.getCount() || adapter.getItem(position).getResult() != null) {
      menu.add(Menu.NONE, position, position, R.string.history_clear_one_history_text);
    } // else it's just that dummy "Empty" message
  }

  @Override
  public boolean onContextItemSelected(MenuItem item) {
    int position = item.getItemId();
    historyManager.deleteHistoryItem(position);
    reloadHistoryItems();
    return true;
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    if (historyManager.hasHistoryItems()) {
      MenuInflater menuInflater = getMenuInflater();
      menuInflater.inflate(R.menu.history, menu);
    }
    return super.onCreateOptionsMenu(menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    int itemId = item.getItemId();
    if (itemId == R.id.menu_history_send) {
      CharSequence history = historyManager.buildHistory();
      Parcelable historyFile = HistoryManager.saveHistory(history.toString());
      if (historyFile == null) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(R.string.msg_unmount_usb);
        builder.setPositiveButton(R.string.button_ok, null);
        builder.show();
      } else {
        Intent intent = new Intent(Intent.ACTION_SEND, Uri.parse("mailto:"));
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
        String subject = getResources().getString(R.string.history_email_title);
        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
        intent.putExtra(Intent.EXTRA_TEXT, subject);
        intent.putExtra(Intent.EXTRA_STREAM, historyFile);
        intent.setType("text/csv");
        try {
          startActivity(intent);
        } catch (ActivityNotFoundException anfe) {
          Log.w(TAG, anfe.toString());
        }
      }
    } else if (itemId == R.id.menu_history_clear_text) {
      AlertDialog.Builder builder = new AlertDialog.Builder(this);
      builder.setMessage(R.string.msg_sure);
      builder.setCancelable(true);
      builder.setPositiveButton(R.string.button_ok, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int i2) {
          historyManager.clearHistory();
          dialog.dismiss();
          finish();
        }
      });
      builder.setNegativeButton(R.string.button_cancel, null);
      builder.show();
    } else {
      return super.onOptionsItemSelected(item);
    }
    return true;
  }

}

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