com.cwc.litenote.PicturePagerAct.java Source code

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Here is the source code for com.cwc.litenote.PicturePagerAct.java

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/*******************************************************************************
 * Copyright 2011-2013 Sergey Tarasevich
 *
 * 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.cwc.litenote;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.Toast;

//import com.cwc.litenote.Constants.Extra;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.FailReason;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.listener.SimpleImageLoadingListener;
import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;

public class PicturePagerAct extends Activity {

    String STATE_POSITION = "STATE_POSITION";
    String IMAGES = "IMAGES";
    String IMAGE_POSITION = "IMAGE_POSITION";

    DisplayImageOptions options;

    ViewPager pager;
    protected ImageLoader imageLoader = ImageLoader.getInstance();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //      if(Build.VERSION.SDK_INT >= 11)
        //      {
        //         ActionBar actionBar = getActionBar();
        //         actionBar.setDisplayHomeAsUpEnabled(true);
        //      }
        getActionBar().hide();
        //      getActionBar().setDisplayShowHomeEnabled(false);
        //      getActionBar().setDisplayShowTitleEnabled(false);

        setContentView(R.layout.picture_pager);

        Bundle bundle = getIntent().getExtras();
        assert bundle != null;
        String[] imageUrls = bundle.getStringArray(IMAGES);
        int pagerPosition = bundle.getInt(IMAGE_POSITION, 0);

        if (savedInstanceState != null) {
            pagerPosition = savedInstanceState.getInt(STATE_POSITION);
        }

        options = new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.ic_empty)
                .showImageOnFail(R.drawable.ic_error).resetViewBeforeLoading(true).cacheOnDisk(true)
                .imageScaleType(ImageScaleType.EXACTLY).bitmapConfig(Bitmap.Config.RGB_565).considerExifParams(true)
                .displayer(new FadeInBitmapDisplayer(300)).build();

        pager = (ViewPager) findViewById(R.id.imagePager);
        pager.setAdapter(new ImagePagerAdapter(imageUrls));
        pager.setCurrentItem(pagerPosition);
    }

    //   @Override
    //   public boolean onOptionsItemSelected(MenuItem item) {
    //       switch (item.getItemId()) {
    //       case android.R.id.home:
    //          setResult(RESULT_CANCELED);
    //            finish();
    //           return true;
    //       }
    //       return super.onOptionsItemSelected(item);
    //   }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        outState.putInt(STATE_POSITION, pager.getCurrentItem());
    }

    private class ImagePagerAdapter extends PagerAdapter {

        private String[] images;
        private LayoutInflater inflater;

        ImagePagerAdapter(String[] images) {
            this.images = images;
            inflater = getLayoutInflater();
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView((View) object);
        }

        @Override
        public int getCount() {
            return images.length;
        }

        @Override
        public Object instantiateItem(ViewGroup view, int position) {
            View imageLayout = inflater.inflate(R.layout.picture_pager_item, view, false);
            assert imageLayout != null;

            TouchImageView imageView = (TouchImageView) imageLayout.findViewById(R.id.image);
            final ProgressBar spinner = (ProgressBar) imageLayout.findViewById(R.id.loading);

            imageLoader.displayImage(images[position], imageView, options, new SimpleImageLoadingListener() {
                @Override
                public void onLoadingStarted(String imageUri, View view) {
                    spinner.setVisibility(View.VISIBLE);
                    view.setVisibility(View.GONE);
                }

                @Override
                public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
                    String message = null;
                    switch (failReason.getType()) {
                    case IO_ERROR:
                        message = "Input/Output error";
                        break;
                    case DECODING_ERROR:
                        message = "Image can't be decoded";
                        break;
                    case NETWORK_DENIED:
                        message = "Downloads are denied";
                        break;
                    case OUT_OF_MEMORY:
                        message = "Out Of Memory error";
                        break;
                    case UNKNOWN:
                        message = "Unknown error";
                        break;
                    }
                    Toast.makeText(PicturePagerAct.this, message, Toast.LENGTH_SHORT).show();

                    spinner.setVisibility(View.GONE);
                }

                @Override
                public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
                    spinner.setVisibility(View.GONE);
                    view.setVisibility(View.VISIBLE);
                }
            });

            view.addView(imageLayout, 0);
            return imageLayout;
        }

        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view.equals(object);
        }

        @Override
        public void restoreState(Parcelable state, ClassLoader loader) {
        }

        @Override
        public Parcelable saveState() {
            return null;
        }
    }

}