ViewPager und ListView Cache

Question

Ich habe einen ViewPager mit 4 ListViews.The Liste zeigt alle Download-Bilder und ich möchte sie zwischenspeichern, aber es gibt einen Fehler und die App funktioniert sehr langsam. Gibt es eine Möglichkeit, alle Bilder in 1 LruCache oder ähnlichem zu cachen? Dies ist mein Code so weit erste Liste Adapter

public class TwitchAdapter extends ArrayAdapter<Twitch>{ 
private Context context; 
private int resourceId; 
private ArrayList<Twitch> twitchList; 
LruCache<Integer,Bitmap> logoCache; 
LruCache<Integer,Bitmap> iconCache; 
public TwitchAdapter(Context c, int resId, ArrayList<Twitch> objects){ 
    super(c, resId, objects); 
    this.context = c; 
    this.resourceId = resId; 
    this.twitchList = objects; 
    final int maxMemory = (int) (Runtime.getRuntime().maxMemory()/1024); 
    iconCache = new LruCache<Integer, Bitmap>(maxMemory/16); 
    logoCache = new LruCache<Integer, Bitmap>(maxMemory/64); 
} 
public View getView(final int position, View convertView, final ViewGroup parent){ 
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    View view = inflater.inflate(resourceId, parent, false); 
    final Twitch twitch = twitchList.get(position); 

    TextView viewrs = (TextView) view.findViewById(R.id.viewers); 
    TextView language = (TextView) view.findViewById(R.id.language); 
    TextView status = (TextView) view.findViewById(R.id.streamer_status); 
    TextView name = (TextView) view.findViewById(R.id.streamer_name); 
    ImageView profile = (ImageView) view.findViewById(R.id.logo); 
    CircleImageView imageView = (CircleImageView) view.findViewById(R.id.twitch_icon); 
    int id = twitch.getId(); 
    status.setText(twitch.getStatus()); 
    language.setText(twitch.getLanguage()); 
    name.setText(twitch.getName()); 
    viewrs.setText(twitch.getViewrs()+""); 
    Bitmap bitmapIcon = iconCache.get(id+1); 
    if (bitmapIcon != null){ 


     imageView.setImageBitmap(bitmapIcon); 
    }else { 
     LoadImageTask(twitch,imageView); 
    } 
    Bitmap bitmapLogo = logoCache.get(twitch.getId()); 
    if (bitmapLogo != null){ 
     profile.setImageBitmap(bitmapLogo); 
    }else { 
     LoadIconTast(twitch,profile); 
    } 

    return view; 
} 



public void LoadImageTask(final Twitch twitch, final ImageView iconView){ 

     ImageRequest request =new ImageRequest(twitch.getIconUrl(), new Response.Listener<Bitmap>() { 
     @Override 
     public void onResponse(Bitmap response) { 
      iconView.setImageBitmap(response); 
      iconCache.put(twitch.getId()+1,response); 
     } 
    }, 0, 0, null, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 

     } 
    }); 
    RequestQueue quew = Volley.newRequestQueue(context); 
    quew.add(request); 

} 
private void LoadIconTast(final Twitch twitch, final ImageView profileView) { 
    ImageRequest request =new ImageRequest(twitch.getLogoUrl(), new Response.Listener<Bitmap>() { 
     @Override 
     public void onResponse(Bitmap response) { 
      profileView.setImageBitmap(response); 
      iconCache.put(twitch.getId(),response); 
      notifyDataSetChanged(); 
     } 
    }, 0, 0, null, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 

     } 
    }); 
    RequestQueue quew = Volley.newRequestQueue(context); 
    quew.add(request); 
} 

}

Und ein anderer genau wie dieser und das ist Fehler

12-06 19:15:24.392 31970-2219/app.mma.introsliderproject E/AndroidRuntime: FATAL EXCEPTION: Thread-100374 
                     Process: app.mma.introsliderproject, PID: 31970 
                     java.lang.OutOfMemoryError: Failed to allocate a 17 byte allocation with 27048 free bytes and 26KB until OOM 
                      at com.android.volley.toolbox.DiskBasedCache.streamToBytes(DiskBasedCache.java:323) 
                      at com.android.volley.toolbox.DiskBasedCache.readString(DiskBasedCache.java:541) 
                      at com.android.volley.toolbox.DiskBasedCache.readStringStringMap(DiskBasedCache.java:564) 
                      at com.android.volley.toolbox.DiskBasedCache$CacheHeader.readHeader(DiskBasedCache.java:404) 
                      at com.android.volley.toolbox.DiskBasedCache.initialize(DiskBasedCache.java:157) 
                      at com.android.volley.CacheDispatcher.run(CacheDispatcher.java:84) 

Answer 1

Sie können Bild-Caching-Bibliothek wie Glide verwenden oder Picasso. Sie können Ihre Bilder automatisch an die Größe der Ansicht anpassen und weniger Speicherplatz verbrauchen.

Answer 2

schrieb ich dieses und seiner Arbeits

public class Cache { 
LruCache<Integer,Bitmap> logoCache = new LruCache<>((int) (Runtime.getRuntime().maxMemory()/1024/8)); 

public void setCache(int key, Bitmap bitmap){ 

    logoCache.put(key,bitmap); 
} 
public Bitmap getCache(int key){ 

    Bitmap bitmap = logoCache.get(key); 
    return bitmap; 
}