com.crust87.centercropvideoviewsample.LoadImageTask.java Source code

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Here is the source code for com.crust87.centercropvideoviewsample.LoadImageTask.java

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/*
 * Android-CenterCropVideoView
 * https://github.com/crust87/Android-FFmpegExecutor
 *
 * Mabi
 * crust87@gmail.com
 * last modify 2016-01-15
 *
 * 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.crust87.centercropvideoviewsample;

import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.support.v4.util.LruCache;
import android.view.View;
import android.widget.ImageView;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;

public class LoadImageTask extends AsyncTask<String, Void, Bitmap> {
    private static final LruCache<String, Bitmap> mMemoryCache = new LruCache<String, Bitmap>(
            (int) ((Runtime.getRuntime().maxMemory() / 1024) / 8)) {
        @Override
        protected int sizeOf(String key, Bitmap bitmap) {
            return bitmap.getByteCount() / 1024;
        }
    };

    private ImageView mImageView;
    private String mPicture;
    private Context mContext;
    private boolean isFadeIn;

    public LoadImageTask(ImageView imageView, String picture, Context context) {
        mImageView = imageView;
        mPicture = picture;
        mContext = context;
        isFadeIn = true;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    protected Bitmap doInBackground(String... urls) {
        String name = mPicture.substring(mPicture.lastIndexOf('/') + 1);

        Bitmap lPicture = mMemoryCache.get(name);

        if (lPicture != null) {
            return lPicture;
        }

        File lPictureFile = new File(mContext.getCacheDir() + "/" + name);

        if (!lPictureFile.exists()) {
            try {
                InputStream inputStream = new java.net.URL(mPicture).openStream();
                OutputStream outputStream = new FileOutputStream(lPictureFile);
                BufferedInputStream bin = new BufferedInputStream(inputStream);
                BufferedOutputStream bout = new BufferedOutputStream(outputStream);

                int bytesRead = 0;
                byte[] buffer = new byte[1024];

                while ((bytesRead = bin.read(buffer, 0, 1024)) != -1) {
                    bout.write(buffer, 0, bytesRead);
                }

                bout.close();
                bin.close();
                outputStream.close();
                inputStream.close();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
                return null;
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        try {
            InputStream in = new FileInputStream(lPictureFile);
            lPicture = BitmapFactory.decodeStream(in);

            if (mMemoryCache != null) {
                mMemoryCache.put(name, lPicture);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

        return lPicture;
    }

    protected void onPostExecute(Bitmap pPicture) {
        if (mImageView != null && pPicture != null) {
            if (isFadeIn) {
                setImageWithFadeIn(mImageView, pPicture);
            } else {
                mImageView.setImageBitmap(pPicture);
            }
        }
    }

    private static void setImageWithFadeIn(ImageView imageView, Bitmap picture) {
        if (imageView != null && picture != null) {
            imageView.setImageBitmap(picture);
            fadeInView(imageView);
        }
    }

    private static void fadeInView(View view) {
        ObjectAnimator fadeIn = ObjectAnimator.ofFloat(view, "alpha", 0.0f, 1f);
        fadeIn.setDuration(500);
        AnimatorSet fadeSet = new AnimatorSet();
        fadeSet.play(fadeIn);
        fadeSet.start();
    }

}