Android Open Source - infinite-grid Main Activity

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Copyright 2014 Kenneth Maffei/*from   w w w  .  j  av  a2s.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.kennethmaffei.infinitegrid;

import webview.WebViewActivity;

import com.appliedideas.infinitegrid.R;

import disklrucache.DiskLruOperations;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.Window;
import android.view.WindowManager;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;

/**
 * Our main activity. Sets the UI and initiates the HTTP requests
 * 
 * @author Kenneth Maffei
 *
 */
public class MainActivity extends Activity {
  
  //Tiles just holds data, so no need to re-populate it on an activity restart
  //Make it static so we can instantiate just once
  static Tiles tiles;
  MainView mainView;
  public static Context context;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    context = this;
    
    requestWindowFeature(Window.FEATURE_NO_TITLE); 
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setRequestedOrientation(6);
        
    WindowManager wm = getWindowManager();
    DisplayMetrics dm = new DisplayMetrics();
    wm.getDefaultDisplay().getMetrics(dm);
    
    DiskLruOperations.setCacheDir();
      
    mainView = new MainView(this);
    mainView.setFlingVariables(dm.widthPixels);
    mainView.setWillNotDraw(false);
      RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
      setContentView(mainView, relativeParams);
    
      if(tiles == null) {
      tiles = new Tiles();
          tiles.calculateTiles(dm.widthPixels, dm.heightPixels);
    }
    
    //We need to retrieve the thumbnails from the server
    HTTPCommManager.INSTANCE.setActivity(this);
    HTTPCommManager.INSTANCE.getDBData();
    
    mainView.invalidate();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
  
  /**
   * @param image - a retrieved image that is forwarded to the Tiles object
   */
  public void fillGrid(RecordDescriptor id)
  {
    tiles.fillGrid(id);
    mainView.invalidate();
  }
  
  public void transitionToWebview(String url) {
    Intent intent = new Intent(MainActivity.context, WebViewActivity.class);
    intent.putExtra(Constants.WEBVIEW_INTENT_URL, url);
    startActivity(intent);
  }
}

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