mirror of
https://github.com/pierre42100/ComunicAndroid
synced 2024-12-27 22:18:58 +00:00
New version of ImageLoad more efficient
This commit is contained in:
Pierre
parent
3a54768224
commit
a1d791b232
@ -0,0 +1,71 @@
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import org.communiquons.android.comunic.client.data.Utilities;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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/**
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* Download an image and save it into a file
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/18/17.
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*/
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class ImageDownloadRunnable implements Runnable {
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private String url;
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private File dest;
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/**
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* Instantiate the class for a specific image
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*
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* @param url The URL were the image can be retrieved
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* @param dest The destination file to the image
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*/
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ImageDownloadRunnable(String url, File dest){
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this.url = url;
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this.dest = dest;
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}
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/**
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* Perform the download
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*/
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@Override
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public void run() {
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try {
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//Open the file for writing
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if(!dest.createNewFile())
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return;
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OutputStream os = new FileOutputStream(dest, false);
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//Open the connection
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URL urlObj = new URL(url);
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HttpURLConnection conn = (HttpURLConnection) urlObj.openConnection();
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conn.setDoInput(true);
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conn.setConnectTimeout(5000);
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conn.setReadTimeout(5000);
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conn.connect();
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//Get input stream
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InputStream is = conn.getInputStream();
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//Transfer bytes
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Utilities.InputToOutputStream(is, os);
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os.close();
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is.close();
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conn.disconnect();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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@ -0,0 +1,50 @@
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import android.graphics.Bitmap;
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import android.support.annotation.UiThread;
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import android.widget.ImageView;
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/**
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* This runnable apply a bitmap on an image view.
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*
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* This runnable is intended to be run on the UI thread
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/18/17.
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*/
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class ImageLoadApplyRunnable implements Runnable {
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/**
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* The bitmap to appply
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*/
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private Bitmap bitmap;
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/**
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* The target image view
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*/
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private ImageView imageView;
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/**
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* Construct the class
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*
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* @param imageView The target image view
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* @param bitmap The bitmap to apply
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*/
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ImageLoadApplyRunnable(ImageView imageView, Bitmap bitmap){
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//Save the values
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this.bitmap = bitmap;
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this.imageView = imageView;
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}
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/**
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* This operation should be run only on the UI Thread
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*/
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@Override
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@UiThread
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public void run() {
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//Apply the image
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imageView.setImageBitmap(bitmap);
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}
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}
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@ -0,0 +1,108 @@
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import android.content.Context;
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import android.util.ArrayMap;
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import android.view.View;
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import android.widget.ImageView;
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/**
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* Image load manager
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/18/17.
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*/
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public class ImageLoadManager {
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/**
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* The list of running operations
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*/
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private static ArrayMap<View, Thread> threads = null;
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/**
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* Private constructor
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*/
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private static void construct(){
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//Initializate threads list
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threads = new ArrayMap<>();
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}
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/**
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* Check wether the class has been already initialized or not
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*
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* @return True if the class is already initialized
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*/
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private static boolean is_constructed(){
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return threads != null;
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}
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/**
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* Create a new operation
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*
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* @param context The context of the application
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* @param url The URL of the image to load
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* @param imageView The target view for the image
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*/
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public static void load(Context context, String url, ImageView imageView){
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//Initializate class if required
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if(!is_constructed())
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construct();
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//Remove any previously existing operation
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remove(imageView);
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//Create the new thread
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Thread thread = new Thread(new ImageLoadRunnable(context, imageView, url));
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threads.put(imageView, thread);
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//Run it
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thread.start();
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}
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/**
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* Remove (and kill) a thread associated to a view
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*
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* @param view The target view
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*/
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public static void remove(ImageView view){
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//Check if the view has an associated thread
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if(threads.containsKey(view)){
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Thread thread = threads.get(view);
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//Kill the thread if it is alive
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if(thread != null){
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if(thread.isAlive())
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thread.interrupt();
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}
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//Remove the thread from the list
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threads.remove(view);
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}
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//Clean the list
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clean();
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}
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/**
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* Clean the list of pending operations
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*/
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private static void clean(){
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//Get the list of threads
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for(View view : threads.keySet()){
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if(threads.get(view) != null)
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//Check if the associated thread with the view is still alive or not
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if(!threads.get(view).isAlive())
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threads.remove(view);
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}
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}
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}
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@ -0,0 +1,160 @@
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.util.ArrayMap;
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import android.util.Log;
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import android.widget.ImageView;
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import java.io.File;
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import java.io.FileInputStream;
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/**
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* Image loading runnable
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*
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* The advantages of this manager are the following for image loading : it avoid a single file to be
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* downloaded several times and it several images to be downloaded at once
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/18/17.
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*/
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class ImageLoadRunnable implements Runnable {
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/**
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* An array map with all the pending images associated with their URLs
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*/
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private static ArrayMap<String, Thread> pendingOperation = null;
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/**
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* The context of the operation
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*/
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private Context mContext;
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/**
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* Target view for the image
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*/
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private ImageView imageView;
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/**
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* The URL of the image
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*/
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private String url;
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/**
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* The file object of the image
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*/
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private File file;
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/**
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* Constructor of the runnable
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*
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* @param context The context of the application
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* @param imageView The imageView of the image
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* @param url The URL of the image
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*/
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ImageLoadRunnable(Context context, ImageView imageView, String url){
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//Check if the list of pending operations has to be initialized or not
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if(pendingOperation == null)
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pendingOperation = new ArrayMap<>();
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//Save the values
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this.imageView = imageView;
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this.url = url;
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this.mContext = context;
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}
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@Override
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public void run() {
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//Determine the filename for the requested URL
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String filename = ImageLoadUtils.IMAGE_CACHE_DIRECTORY + ImageLoadUtils.get_file_name(url);
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//Create file object
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file = new File(mContext.getCacheDir(),filename);
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//Check no thread is already running for the following image
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if(!pendingOperation.containsKey(url)){
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//Check if a file exist or not
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if(file.exists()){
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//Then the file can be loaded in a bitmap
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load_image();
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return;
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}
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else {
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//Create the thread and start it
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Thread thread = new Thread(new ImageDownloadRunnable(url, file));
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pendingOperation.put(url, thread);
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thread.start();
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}
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}
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//Get the thread
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Thread operation = pendingOperation.get(url);
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//If we couldn't get the thread, this is an error
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if(operation == null){
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Log.e("ImageLoadManagerRunnabl", "run : Couldn't get thread !");
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return;
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}
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if(operation.isAlive()) {
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try {
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//Wait for the thread to finish
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operation.join();
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} catch (InterruptedException e) {
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e.printStackTrace();
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return;
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}
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}
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//Remove the thread from the pending list
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pendingOperation.remove(url);
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//Load the image
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load_image();
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}
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/**
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* Once the image was downloaded (if it wasn't already) load the image into a bitmpa object
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* The apply to the final image view
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*/
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private void load_image(){
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//Check if the file exists
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if(!file.exists()){
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Log.e("ImageLoadManagerRunnabl", "load_image : file does not exists but it should !");
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return;
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}
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try {
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//Load the image
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FileInputStream is = new FileInputStream(file);
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Bitmap bitmap = BitmapFactory.decodeStream(is);
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is.close();
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//Check if bitmap failed to read
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if(bitmap == null){
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//Return error
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Log.e("ImageLoadManagerRunnabl", "Image file could not be read, therefore it was" +
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"deleted");
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//Delete file
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file.delete();
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return;
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}
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//Apply the bitmap on the image view (register operation)
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imageView.post(new ImageLoadApplyRunnable(imageView, bitmap));
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} catch (Exception e){
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e.printStackTrace();
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}
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}
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}
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@ -1,4 +1,4 @@
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package org.communiquons.android.comunic.client.data;
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import android.content.Context;
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import android.graphics.Bitmap;
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@ -9,6 +9,8 @@ import android.support.v4.content.ContextCompat;
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import android.util.Log;
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import android.widget.ImageView;
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import org.communiquons.android.comunic.client.data.Utilities;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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@ -23,10 +25,13 @@ import java.net.URL;
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/**
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* Web image loader and renderer
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*
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* Warning : Using ImageLoadTask is a quite bad idea to load multiple images,
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* ImageLoad class should be preferred
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/8/17.
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*/
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@Deprecated
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public class ImageLoadTask extends AsyncTask<Void, Void, Void> {
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/**
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@ -44,11 +49,6 @@ public class ImageLoadTask extends AsyncTask<Void, Void, Void> {
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*/
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private Context mContext;
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/**
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* The main folder in the cache directory that stores the file
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*/
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private final String IMAGE_CACHE_DIRECTORY = "img_cache/";
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/**
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* Image file object
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*/
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@ -80,12 +80,12 @@ public class ImageLoadTask extends AsyncTask<Void, Void, Void> {
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protected Void doInBackground(Void... param) {
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//Determine the file name for the view
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String filename = get_file_name(url);
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String filename = ImageLoadUtils.get_file_name(url);
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if (filename == null) {
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Log.e("ImageLoadTask", "Couldn't generate file storage name !");
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return null; //An error occured
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}
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String full_filename = IMAGE_CACHE_DIRECTORY + filename;
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String full_filename = ImageLoadUtils.IMAGE_CACHE_DIRECTORY + filename;
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//Try to open the file
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img_file = new File(mContext.getCacheDir(), full_filename);
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@ -177,24 +177,13 @@ public class ImageLoadTask extends AsyncTask<Void, Void, Void> {
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return true;
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}
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/**
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* Get the file name, based on the URL name
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*
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* @param url The URL of the file
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* @return The name of the file, composed of characters that can be used in filename
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*/
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private String get_file_name(String url){
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return Utilities.sha1(url);
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}
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/**
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* Create cache images files parent directory if it does not exist
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*
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* @return True in case of success
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*/
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private boolean create_parent_directory(){
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File parent = new File(mContext.getCacheDir(), IMAGE_CACHE_DIRECTORY);
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File parent = new File(mContext.getCacheDir(), ImageLoadUtils.IMAGE_CACHE_DIRECTORY);
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//Check if parent directory already exists
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if(parent.exists())
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@ -0,0 +1,29 @@
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package org.communiquons.android.comunic.client.data.ImageLoad;
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import org.communiquons.android.comunic.client.data.Utilities;
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/**
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* Image loading utilities
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*
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* @author Pierre HUBERT
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* Created by pierre on 11/18/17.
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*/
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class ImageLoadUtils {
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/**
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* The main folder in the cache directory that stores the file
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*/
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static final String IMAGE_CACHE_DIRECTORY = "img_cache/";
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/**
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* Get the file name, based on the URL name
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*
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* @param url The URL of the file
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* @return The name of the file, composed of characters that can be used in filename
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*/
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static String get_file_name(String url){
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return Utilities.sha1(url);
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}
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}
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@ -1,6 +1,7 @@
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package org.communiquons.android.comunic.client.data.friendsList;
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import android.app.Activity;
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import android.os.AsyncTask;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.view.LayoutInflater;
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@ -11,7 +12,8 @@ import android.widget.ImageView;
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import android.widget.TextView;
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import org.communiquons.android.comunic.client.R;
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import org.communiquons.android.comunic.client.data.ImageLoadTask;
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import org.communiquons.android.comunic.client.data.ImageLoad.ImageLoadManager;
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import org.communiquons.android.comunic.client.data.ImageLoad.ImageLoadTask;
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import java.util.ArrayList;
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@ -51,8 +53,7 @@ public class FriendsAdapter extends ArrayAdapter<FriendUser> {
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//Update user account image
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ImageView user_image = listItemView.findViewById(R.id.fragment_friendslist_item_accountimage);
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new ImageLoadTask(getContext(), friendUser.getUserInfo().getAcountImageURL(), user_image)
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.execute();
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ImageLoadManager.load(getContext(), friendUser.getUserInfo().getAcountImageURL(), user_image);
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//Update user name
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TextView user_name = listItemView.findViewById(R.id.fragment_friendslist_item_fullname);
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@ -14,7 +14,7 @@ import android.widget.TextView;
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import org.communiquons.android.comunic.client.R;
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import org.communiquons.android.comunic.client.data.Account.AccountUtils;
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import org.communiquons.android.comunic.client.data.DatabaseHelper;
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import org.communiquons.android.comunic.client.data.ImageLoadTask;
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import org.communiquons.android.comunic.client.data.ImageLoad.ImageLoadTask;
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import org.communiquons.android.comunic.client.data.UsersInfo.GetUsersInfos;
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import org.communiquons.android.comunic.client.data.UsersInfo.UserInfo;
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