Android Open Source - Android-Universal-Image-Loader Home Activity

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License

The source code is released under:

Apache License

Java Source Code

/*******************************************************************************
 * Copyright 2011-2013 Sergey Tarasevich
 *//w  w  w.ja  va2s  .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.nostra13.universalimageloader.sample.activity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.sample.Constants;
import com.nostra13.universalimageloader.sample.R;
import com.nostra13.universalimageloader.sample.fragment.ImageGalleryFragment;
import com.nostra13.universalimageloader.sample.fragment.ImageGridFragment;
import com.nostra13.universalimageloader.sample.fragment.ImageListFragment;
import com.nostra13.universalimageloader.sample.fragment.ImagePagerFragment;
import com.nostra13.universalimageloader.utils.L;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
 */
public class HomeActivity extends Activity {

  private static final String TEST_FILE_NAME = "Universal Image Loader @#&=+-_.,!()~'%20.png";

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.ac_home);

    File testImageOnSdCard = new File("/mnt/sdcard", TEST_FILE_NAME);
    if (!testImageOnSdCard.exists()) {
      copyTestImageToSdCard(testImageOnSdCard);
    }
  }

  public void onImageListClick(View view) {
    Intent intent = new Intent(this, SimpleImageActivity.class);
    intent.putExtra(Constants.Extra.FRAGMENT_INDEX, ImageListFragment.INDEX);
    startActivity(intent);
  }

  public void onImageGridClick(View view) {
    Intent intent = new Intent(this, SimpleImageActivity.class);
    intent.putExtra(Constants.Extra.FRAGMENT_INDEX, ImageGridFragment.INDEX);
    startActivity(intent);
  }

  public void onImagePagerClick(View view) {
    Intent intent = new Intent(this, SimpleImageActivity.class);
    intent.putExtra(Constants.Extra.FRAGMENT_INDEX, ImagePagerFragment.INDEX);
    startActivity(intent);
  }

  public void onImageGalleryClick(View view) {
    Intent intent = new Intent(this, SimpleImageActivity.class);
    intent.putExtra(Constants.Extra.FRAGMENT_INDEX, ImageGalleryFragment.INDEX);
    startActivity(intent);
  }

  public void onFragmentsClick(View view) {
    Intent intent = new Intent(this, ComplexImageActivity.class);
    startActivity(intent);
  }

  @Override
  public void onBackPressed() {
    ImageLoader.getInstance().stop();
    super.onBackPressed();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main_menu, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case R.id.item_clear_memory_cache:
        ImageLoader.getInstance().clearMemoryCache();
        return true;
      case R.id.item_clear_disc_cache:
        ImageLoader.getInstance().clearDiskCache();
        return true;
      default:
        return false;
    }
  }

  private void copyTestImageToSdCard(final File testImageOnSdCard) {
    new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          InputStream is = getAssets().open(TEST_FILE_NAME);
          FileOutputStream fos = new FileOutputStream(testImageOnSdCard);
          byte[] buffer = new byte[8192];
          int read;
          try {
            while ((read = is.read(buffer)) != -1) {
              fos.write(buffer, 0, read);
            }
          } finally {
            fos.flush();
            fos.close();
            is.close();
          }
        } catch (IOException e) {
          L.w("Can't copy test image onto SD card");
        }
      }
    }).start();
  }
}

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