I am working with an application and have about 10 Recycle view, when i move between fragments, app crash with out of memory.
I am using a lot of images in this app
I want to know how to apply bitmap recycle as it's the main reason of the exception
My recycle adapter is:
public void onBindViewHolder(MboViewHolder holder, int position) {
GameEvent gameEvent = ev.get(position);
holder.bindPhoto(holder,cnt,gameEvent.getEventImage());}
BindPhoto mwthod is:
public void bindPhoto(MboViewHolder mbo,Context cnt, String photoUrl) {
mbo.img.setTag(photoUrl);
Bitmap imgz = Tools.getPhoto(photoUrl, 0);
if (imgz != null) {
mbo.img.setImageBitmap(imgz);
Log.e("NoDwnLd","No");
} else {
Bitmap largeIcon = BitmapFactory.decodeResource(cnt.getResources(), R.drawable.ic_default);
mbo.img.setImageBitmap(largeIcon);
new DownloadBitmap(cnt,mbo.img,"2").execute(photoUrl);
}
My DownloadBitmap asynctask is:
public class DownloadBitmap extends AsyncTask<String, Void, Bitmap> {
private int flag=0;
private ImageView img;
private String type;
private HashMap<String, Bitmap> map= new HashMap<>();
private Context cnt;
private String url;
public DownloadBitmap(Context cnt, ImageView img, String type) {
this.cnt = cnt;
this.img=img;
this.type=type;
}
public DownloadBitmap(Context cnt, ImageView img, String type, HashMap<String, Bitmap> map) {
this.cnt = cnt;
this.img=img;
this.type=type;
this.map=map;
}
public DownloadBitmap(Context context) {
this.cnt=context;
this.flag=2;
}
@Override
protected Bitmap doInBackground(String... params) {
Bitmap bitmap=null;
if (cnt!=null){
boolean check = new CheckInternetConnection(cnt).haveNetworkConnection();
if (check) {
try {
url=params[0];
if (url==null || url.equals("")) return null;
InputStream in = new java.net.URL(url).openStream();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = Globals.inSampleSize;
bitmap = BitmapFactory.decodeStream(in,null,options);
return bitmap;
} catch (Exception e) {
Log.e("ImageDownload", "Download failed: " + e.getMessage());
}
}
}
return bitmap;
}
@Override
protected void onPostExecute(Bitmap bitmap) {
if(bitmap != null){
bitmap=Tools.resizeImage(bitmap,500,500);
//view.setImageViewBitmap(R.id.nt_img, bitmap);
if(type == "1") Tools.sendNotification(cnt, bitmap);
if(type == "2") {
if(img.getTag()!= null && img.getTag() == url){
// keep all images stored on memory for fast retrieval
// map.put(url, bitmap);
// Log.e("url", url);
// save the image inside the image holder
//img.setImageBitmap(map.get(url));
Log.e("DwnLD",img.getTag()+"");
img.setImageBitmap(bitmap);
Tools.storePhoto(img.getTag().toString(), bitmap);
}
// Log.e("ImageDownload", "bitmap in imageview");
}
if (type == null){
// map.put(url, bitmap);
// if (img!=null && map.get(url)!=null)img.setImageBitmap(map.get(url));
if (img!=null)img.setImageBitmap(bitmap);
}
if (cnt != null && flag ==2){
Tools.storePhoto(CreateEvent1Fragment.searchResult.get(0).getEventImage(),bitmap);
// Log.e("ImageDownload", "bitmap in imageview");
}
}
}
My Tools.resizeImage is:
public static Bitmap resizeImage(Bitmap bitmap,int newWidth,int newHeight){
Bitmap resized = Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true);
return resized;
}
My Tools.storePhoto is:
public static void storePhoto(String url,Bitmap image){
File img = null;
File env = new File(Environment.getExternalStorageDirectory() + Globals.DIR);
if(!env.exists()) env.mkdir();
String filename = extractUrl(url);
img=new File(Environment.getExternalStorageDirectory()+Globals.DIR+filename);
if (!img.exists()) {
// Log.e("PHOTOS",img.getAbsolutePath());
try {
FileOutputStream fos = new FileOutputStream(img);
image.compress(Bitmap.CompressFormat.PNG, 100, fos);
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
My Tools.getPhoto is:
public static Bitmap getPhoto(String url,int type){
Bitmap bmp=null;
String filename = extractUrl(url);
File ff = new File(Environment.getExternalStorageDirectory()+Globals.DIR+filename);
if(!ff.exists()){
return bmp;
}else {
if (type != 1){
bmp = Tools.decodeFile(ff);
return bmp;
}else {
bmp = BitmapFactory.decodeFile(ff.getAbsolutePath());
return bmp;
}
}
}
My Tools.decodeFile is:
public static Bitmap decodeFile(File f) {
try {
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f), null, o);
// The new size we want to scale to
final int REQUIRED_SIZE=70;
// Find the correct scale value. It should be the power of 2.
int scale = 1;
while(o.outWidth / scale / 2 >= REQUIRED_SIZE &&
o.outHeight / scale / 2 >= REQUIRED_SIZE) {
scale *= 2;
}
o.inSampleSize = scale;
o.inJustDecodeBounds = false;
return BitmapFactory.decodeStream(new FileInputStream(f), null, o);
} catch (FileNotFoundException e) {}
return null;
}
I want to apply bitmap recycle... How can I do that?
