MedesMap.java :  » App » imogene-map » org » imogene » map » app » Android Open Source

package org.imogene.map.app;

import java.util.ArrayList;
import java.util.List;

import org.imogene.map.R;
import org.imogene.map.provider.common.Constants.Intents;
import org.imogene.map.provider.common.Constants.InternalIntents;
import org.imogene.map.provider.common.Constants.Metadata;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.AdapterView.OnItemSelectedListener;

public class MedesMap extends Activity implements OnItemSelectedListener {
  
  private static final boolean DEBUG = false;
  
  public static final String PREFS_SUPPLIER = "supplier";
  
  private ArrayAdapter<SupplierEntry> mSpinnerAdapter;
  private Spinner mSpinner;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    mSpinner = (Spinner) findViewById(R.id.supplier_spinner);
    
    List<SupplierEntry> entries = getSuppliers();
    mSpinnerAdapter = new ArrayAdapter<SupplierEntry>(this, android.R.layout.simple_spinner_item, entries);
    mSpinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    
    mSpinner.setOnItemSelectedListener(this);
    mSpinner.setAdapter(mSpinnerAdapter);
    
    findViewById(R.id.debug).setVisibility(DEBUG ? View.VISIBLE : View.GONE);
  }
  
  @Override
  protected void onResume() {
    super.onResume();
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
    
    String category = preferences.getString(PREFS_SUPPLIER, null);
    
    if (category != null) {
      int position = getCategoryPosition(category);
      if (position != -1) {
        mSpinner.setSelection(position);
      }
    }
  }
  
  @Override
  protected void onPause() {
    super.onPause();
    SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
    SharedPreferences.Editor editor = preferences.edit();
    
    editor.putString(PREFS_SUPPLIER, getSelectedCategory());
    editor.commit();
  }
  
  @Override
  public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
    SupplierEntry entry = (SupplierEntry) parent.getAdapter().getItem(position);
    findViewById(R.id.navigate_button).setEnabled(true);
    findViewById(R.id.download_tiles_button).setEnabled(entry.downloadSupport);
    findViewById(R.id.clear_cache_button).setEnabled(entry.downloadSupport);
  }
  
  @Override
  public void onNothingSelected(AdapterView<?> parent) {
    findViewById(R.id.navigate_button).setEnabled(false);
    findViewById(R.id.download_tiles_button).setEnabled(false);
    findViewById(R.id.clear_cache_button).setEnabled(false);
  }
  
  public void onNavigate(View v) {
    
  }
  
  public void onDownloadTiles(View v) {
    
  }
  
  public void onClearCache(View v) {
    
  }
  
  private String getSelectedCategory() {
    if (mSpinner.getSelectedItemPosition() != Spinner.INVALID_POSITION) {
      return ((SupplierEntry) mSpinner.getSelectedItem()).category;
    } else {
      return null;
    }
  }
  
  private int getCategoryPosition(String category) {
    int count = mSpinnerAdapter.getCount();
    for (int i = 0; i < count; i++) {
      if (category.equals(mSpinnerAdapter.getItem(i).category)) {
        return i;
      }
    }
    return -1;
  }
  
  private ArrayList<SupplierEntry> getSuppliers() {
    ArrayList<SupplierEntry> result = new ArrayList<SupplierEntry>(2);
    Intent i = new Intent(InternalIntents.ACTION_PROVIDER_SHOW_ON_MAP);
    List<ResolveInfo> lri = getPackageManager().queryIntentActivities(i, PackageManager.GET_META_DATA);
    for (ResolveInfo ri : lri) {
      ApplicationInfo ai = ri.activityInfo.applicationInfo;
      Bundle bundle = ri.activityInfo.applicationInfo.metaData;
      if (bundle != null && bundle.containsKey(Metadata.METADATA_TAG)) {
        int id = bundle.getInt(Metadata.METADATA_TAG);
        try {
          Resources res = getPackageManager().getResourcesForApplication(ai);
          String[] array = res.getStringArray(id);
          if (array.length == 3) {
            SupplierEntry entry = new SupplierEntry();
            entry.category = array[0];
            entry.description = array[1];
            entry.downloadSupport = Boolean.parseBoolean(array[2]);
            result.add(entry);
          }
        } catch (NameNotFoundException e) {
          e.printStackTrace();
        }
      }
    }
    return result;
  }
  
  private static class SupplierEntry {
    private String description;
    private String category;
    private boolean downloadSupport;
    
    @Override
    public String toString() {
      return description;
    }
  }
  
  public void captureGps(View v) {
    Intent intent = new Intent(Intents.ACTION_CAPTURE_GPS);
    startActivity(intent);
  }
  
  public void manageBoxes(View v) {
    Intent intent = new Intent(Intents.ACTION_MANAGE_RECT);
    startActivity(intent);
  }
  
  public void newBox(View v) {
    Intent intent = new Intent(Intents.ACTION_NEW_RECT);
    startActivity(intent);
  }
  
  public void viewPoint(View v) {
    Intent intent = new Intent(Intents.ACTION_SHOW_ON_MAP);
    startActivity(intent);
  }
  
  public void downloadTiles(View v) {
    Intent intent = new Intent(Intents.ACTION_DOWNLOAD_TILES);
    startActivity(intent);
  }

}