com.commov.app.dv.PhotoViewActivity.java Source code

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Here is the source code for com.commov.app.dv.PhotoViewActivity.java

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/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * 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.commov.app.dv;

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

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageButton;
import android.widget.TextView;

import com.commov.app.dv.utils.ImageUtility;
import com.commov.app.dv.widget.photoview.HackyViewPager;
import com.commov.app.dv.widget.photoview.PhotoView;

public class PhotoViewActivity extends BaseActivity implements OnClickListener, OnPageChangeListener {

    public final static String KEY_IMAGE_ARRAY = "key_image_array";
    public final static String KEY_IMAGE_START_POSITION = "key_image_start_position";
    private ViewPager mViewPager;
    private TextView imgIndexInfo;
    private ArrayList<String> mImages;
    private ImageButton saveIB;

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

        setContentView(R.layout.activity_photoview);
        mViewPager = (HackyViewPager) findViewById(R.id.hacky_viewpager);
        imgIndexInfo = (TextView) findViewById(R.id.img_index_info);
        saveIB = (ImageButton) findViewById(R.id.ib_save);
        saveIB.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                //TODO
                //String imagePath = mImages.get(mViewPager.getCurrentItem());
                //Utils.Toast(PhotoViewActivity.this, "??");
            }

        });
        Bundle bundle = getIntent().getExtras();
        if (bundle == null) {
            finish();
        }
        Object obj = bundle.getSerializable(KEY_IMAGE_ARRAY);
        if (obj instanceof ArrayList == false) {
            finish();
        } else {
            mImages = (ArrayList<String>) obj;
        }
        if (mImages == null || mImages.size() <= 0) {
            finish();
        }
        int position = bundle.getInt(KEY_IMAGE_START_POSITION);
        mViewPager.setOnPageChangeListener(this);
        mViewPager.setAdapter(new SamplePagerAdapter(mImages));
        mViewPager.setCurrentItem(position, false);
        showImgIndexInfo(position, false);
    }

    private void showImgIndexInfo(int index, boolean useAnim) {
        int i = index + 1;
        int total = mImages.size();
        if (i <= 0) {
            i = 1;
        } else if (i > total) {
            i = total;
        }
        imgIndexInfo.setText(i + "/" + total);
        if (useAnim) {
            imgIndexInfo.startAnimation(getImgIndexInfoShowAnim());
        }
    }

    private Animation imgIndexShowAnim;

    private Animation getImgIndexInfoShowAnim() {
        if (imgIndexShowAnim == null) {
            imgIndexShowAnim = AnimationUtils.loadAnimation(this, R.anim.img_index_show);
        }
        return imgIndexShowAnim;
    }

    class SamplePagerAdapter extends PagerAdapter {
        private List<String> images;

        public SamplePagerAdapter(List<String> mLStrings) {
            this.images = mLStrings;
        }

        @Override
        public int getCount() {
            if (images == null)
                return 0;
            return images.size();

        }

        @Override
        public View instantiateItem(ViewGroup container, int position) {
            final PhotoView photoView = new PhotoView(container.getContext());
            String imagePath = images.get(position);
            ImageUtility.loadImage(photoView, imagePath, 0, R.drawable.placeholder, false);
            // Now just add PhotoView to ViewPager and return it
            container.addView(photoView, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
            return photoView;
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            PhotoView view = (PhotoView) object;
            ImageUtility.cancelAqueryLoad(view, true);
            container.removeView(view);
        }

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

    }

    @Override
    public void onClick(View v) {
    }

    @Override
    public void onPageScrollStateChanged(int arg0) {

    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {

    }

    @Override
    public void onPageSelected(int arg0) {
        showImgIndexInfo(arg0, false);
    }

    public static boolean start(Context context, ArrayList<String> imgsPath, int startShowPosition) {
        if (context == null || imgsPath == null) {
            return false;
        }
        Intent intent = new Intent(context, PhotoViewActivity.class);
        intent.putStringArrayListExtra(KEY_IMAGE_ARRAY, imgsPath);
        intent.putExtra(KEY_IMAGE_START_POSITION, startShowPosition);
        context.startActivity(intent);
        return true;
    }
}