Android Open Source - ChicagoWaterWalk-Android Point Of Interest Activity

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C) 2014 The Illinois-Indiana Sea Grant
 *//  w w w . j  a va  2s . 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 org.iisgcp.waterwalk.activity;

import org.iisgcp.waterwalk.R;
import org.iisgcp.waterwalk.fragment.PointOfInterestGridViewPagerFragment;
import org.iisgcp.waterwalk.fragment.PointOfInterestMapFragment;
import org.iisgcp.waterwalk.utils.Constants;
import org.iisgcp.waterwalk.utils.OnItemClickedListener;
import org.iisgcp.waterwalk.utils.OnPageSelectedListener;

import android.annotation.TargetApi;
import android.os.Bundle;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.ActionBar;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.TextView;

public class PointOfInterestActivity extends NavigationDrawerActivity implements
    ActionBar.OnNavigationListener,
    OnItemClickedListener,
    OnPageSelectedListener {

  /**
   * The serialization (saved instance state) Bundle key representing the
   * current dropdown position.
   */
  private static final String STATE_SELECTED_NAVIGATION_ITEM = "selected_navigation_item";
  private static final String STATE_SELECTED_PAGE_POSITION = "selected_page_position";
  
  private String mTag;
  private int mPosition = -1;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    setContentView(R.layout.activity_point_of_interest);
    
    // Set up the action bar.
    final ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayShowCustomEnabled(true);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.setDisplayHomeAsUpEnabled(true);
    actionBar.setHomeButtonEnabled(true);
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);

    // Set up the dropdown list navigation in the action bar.
    actionBar.setListNavigationCallbacks(
    // Specify a SpinnerAdapter to populate the dropdown list.
        new ArrayAdapter<String>(getActionBarThemedContextCompat(),
            android.R.layout.simple_dropdown_item_1line,
            android.R.id.text1, new String[] {
                getString(R.string.title_grid),
                getString(R.string.title_map)}), this);
    
    LayoutInflater inflator = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflator.inflate(R.layout.actionbar, null);
    actionBar.setCustomView(view);
    
    setTitle(getIntent().getExtras().getString(Constants.INTENT_TITLE));
    
    mPosition = getIntent().getIntExtra(Constants.INTENT_POSITION, -1);
    
    if (savedInstanceState == null) {
      actionBar.setSelectedNavigationItem(getIntent().getIntExtra(Constants.INTENT_TAB, 0));
    }
  }

  @Override
  public void setTitle(CharSequence title) {
    TextView view = (TextView) findViewById(R.id.title);
    view.setText(title);
  }
  
  @TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
  private Context getActionBarThemedContextCompat() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
      return getActionBar().getThemedContext();
    } else {
      return this;
    }
  }


  @Override
  public void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    // Restore the previously serialized current dropdown position.
    if (savedInstanceState.containsKey(STATE_SELECTED_NAVIGATION_ITEM)) {
      getSupportActionBar().setSelectedNavigationItem(
          Integer.valueOf(savedInstanceState.getString(STATE_SELECTED_NAVIGATION_ITEM)));
      
      mTag = savedInstanceState.getString(STATE_SELECTED_NAVIGATION_ITEM);
    }
    
    if (savedInstanceState.containsKey(STATE_SELECTED_PAGE_POSITION)) {
      mPosition = savedInstanceState.getInt(STATE_SELECTED_PAGE_POSITION);
    }
  }

  @Override
  public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    // Serialize the current dropdown position.
    outState.putString(STATE_SELECTED_NAVIGATION_ITEM, mTag);
    outState.putInt(STATE_SELECTED_PAGE_POSITION, mPosition);    
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
          Intent intent = new Intent(this, MainActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);
          return true;
        default:
          return super.onOptionsItemSelected(item);
      }
  }
  
  @Override
  public boolean onNavigationItemSelected(int position, long id) {
      FragmentManager fragmentManager = getSupportFragmentManager();
      Fragment fragment = getSupportFragmentManager().findFragmentByTag(mTag);
      
      if (fragment != null) {
        fragmentManager.beginTransaction().detach(fragment).commit();
      }
      
      String tag = String.valueOf(position);
      fragment = getSupportFragmentManager().findFragmentByTag(tag);
      
      if (fragment == null) {
            if (position == 0) {
            fragment = PointOfInterestGridViewPagerFragment.newInstance(mPosition);
            } else if (position == 1) {
            fragment = PointOfInterestMapFragment.newInstance(mPosition);
            }
        
            getSupportFragmentManager().beginTransaction()
            .add(R.id.content, fragment, tag).commit();
      } else {
        if (position == 0) {
            fragment = PointOfInterestGridViewPagerFragment.newInstance(mPosition);
                getSupportFragmentManager().beginTransaction()
                    .replace(R.id.content, fragment, tag).commit();
          } else if (position == 1) {
            ((PointOfInterestMapFragment) fragment).update(mPosition);
              getSupportFragmentManager().beginTransaction()
                .attach(fragment).commit();
          }
      }
      
      mTag = tag;
      
      return true;
    }
  
  @Override
  public void onItemClicked(Intent intent) {
    startActivity(intent);
  }

  @Override
  public void onPageSelected(int position) {
    mPosition = position;
  }
}

Java Source Code List

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