kann die Größe von Bildern in Universal Image Loader nicht ändern, bevor

Question

angezeigt wird. Ich benutze Android Universal Image Loader und möchte die Größe meiner Recycleransicht und meines Schiebereglers ändern. Ich habe diese Methode in meinem Regler des viewPager:

public class ViewPagerAdapter extends PagerAdapter { 

    private ArrayList<String> imageUrls; 
    private Context context; 
    private DisplayImageOptions defaultOptions2; 
    private ImageLoaderConfiguration config2; 

    public ViewPagerAdapter(Context context, ArrayList<String> imageUrls) { 
    this.context = context; 
    this.imageUrls = imageUrls; 

    DisplayMetrics displayMetrics = context.getResources().getDisplayMetrics(); 
    final float dpHeight = displayMetrics.heightPixels ; 
    final float dpWidth = displayMetrics.widthPixels ; 

    byte[] toEncrypt = (G.getPremiumState()[0] + ":" + G.getPremiumState()[1]).getBytes(); 
    String encryptedCredentials = Base64.encodeToString(toEncrypt, Base64.DEFAULT); 
    Map<String, String> headers = new HashMap(); 
    headers.put("Authorization", "Basic " + encryptedCredentials); 

    defaultOptions2 = new DisplayImageOptions.Builder() 
     .cacheInMemory(true) 
     .cacheOnDisk(true) 
     .showImageOnLoading(R.drawable.loading_02) 
     .showImageOnFail(R.drawable.ic_empty_white_box) 
     .extraForDownloader(headers) 
     .postProcessor(new BitmapProcessor() { 
     @Override 
     public Bitmap process(Bitmap bmp) { 
     return Bitmap.createScaledBitmap(bmp, (int) dpWidth, (int) (dpHeight/2), false); 
     } 
    }) 
     .build(); 

    config2 = new ImageLoaderConfiguration.Builder(G.context) 
     .defaultDisplayImageOptions(defaultOptions2) 
     .imageDownloader(new AuthDownloader(G.context)) 
     .build(); 
    } 

    @Override 
    public void destroyItem(ViewGroup container, int position, Object object) { 
    container.removeView((View) object); 
    } 

    @Override 
    public int getCount() { 
    return imageUrls.size(); 
    } 

    @Override 
    public Object instantiateItem(View collection, int position) { 

    LayoutInflater inflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    View view = inflater.inflate(R.layout.slide_layout, null); 
    ((ViewPager) collection).addView(view); 


    final ImageView img = (ImageView) view.findViewById(R.id.slideImage); 
    ImageLoader imageLoader = ImageLoader.getInstance(); //Get singleton instance 
    imageLoader.init(config2); 
    imageLoader.displayImage(imageUrls.get(position), img); 
    imageLoader.handleSlowNetwork(true); 
    return view; 
    } 

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

Und hier ist mein recyclerView Adapter:

public class BaseListAdapter extends RecyclerView.Adapter<BaseListAdapter.ViewHolder> { 

    private DisplayImageOptions defaultOptions; 
    private ImageLoaderConfiguration config; 

    public BaseListAdapter(List<PList> menuItems, Context mContext) { 
    this.menuItems = menuItems; 
    this.mContext = mContext; 
    this.activitySingleGroup = (ActivitySingleGroup) mContext; 

    byte[] toEncrypt = (G.getPremiumState()[0] + ":" + G.getPremiumState()[1]).getBytes(); 
    String encryptedCredentials = Base64.encodeToString(toEncrypt, Base64.DEFAULT); 
    Map<String, String> headers = new HashMap(); 
    headers.put("Authorization", "Basic " + encryptedCredentials); 

    defaultOptions = new DisplayImageOptions.Builder() 
     .cacheInMemory(true) 
     .cacheOnDisk(true) 
     .showImageOnLoading(R.drawable.loading_02) 
     .showImageOnFail(R.drawable.ic_empty_white_box) 
     .extraForDownloader(headers) 
     .postProcessor(new BitmapProcessor() { 
     @Override 
     public Bitmap process(Bitmap bmp) { 
      return Bitmap.createScaledBitmap(bmp, 120, 120, false); 
     } 
     }) 
     .build(); 

    config = new ImageLoaderConfiguration.Builder(activitySingleGroup) 
     .defaultDisplayImageOptions(defaultOptions) 
     .imageDownloader(new AuthDownloader(activitySingleGroup)) 
     .build(); 

    } 

    public static class ViewHolder extends RecyclerView.ViewHolder { 

    TextView txtName; 
    TextView txtPrice; 
    TextView txtCode; 
    ImageView imgDefault; 
    LinearLayout parentLayout; 
    CoordinatorLayout coordinatorLayout; 

    public ViewHolder(View v) { 
     super(v); 

     txtName = (TextView) v.findViewById(R.id.txtName); 
     txtPrice = (TextView) v.findViewById(R.id.txtPrice); 
     txtCode = (TextView) v.findViewById(R.id.txt_code); 
     imgDefault = (ImageView) v.findViewById(R.id.img_defaultImage); 
     parentLayout = (LinearLayout) v.findViewById(R.id.parentLayout); 
     coordinatorLayout = (CoordinatorLayout) v.findViewById(R.id.coordinatorLayout); 

    } 
    } 

    @Override 
    public BaseListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 

    // Create a new View 
    final View v = LayoutInflater.from(activitySingleGroup).inflate(R.layout.activity_normal_group_recycler, parent, false); 
    ViewHolder vh = new ViewHolder(v); 
    return vh; 
    } 

    @Override 
    public void onBindViewHolder(final ViewHolder holder, final int position) { 

    //Download and Load Default Image from server into imgDefault ImageView 
    String url = "http://185.2.14.77:8080/api/images/download/"; 

    if (menuItems.get(position).getPDefaultImage().getIId() != null) { 

     url += menuItems.get(position).getPDefaultImage().getIId(); 

     ImageLoader imageLoader = ImageLoader.getInstance(); // Get singleton instance 
     imageLoader.init(config); 
     imageLoader.displayImage(url, holder.imgDefault); 
     imageLoader.handleSlowNetwork(true); 

    } else { 
     holder.imgDefault.setImageResource(R.drawable.loading_01); 
    } 

    holder.txtCode.setText("" + menuItems.get(position).getPCode()); 
    holder.txtName.setText(menuItems.get(position).getPName()); 
    holder.txtPrice.setText(String.valueOf(menuItems.get(position).getPPrice())); 
    holder.parentLayout.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 

     prepareBottomSheet(view, position, holder.coordinatorLayout); 
     } 
    }); 

    // Here you apply the animation when the view is bound 
    //setAnimation(holder.parentLayout, position); 
    } 

    @Override 
    public int getItemCount() { 
    if (menuItems.size() > 0) { 

     return menuItems.size(); 

    } else { 
     return 0; 
    } 

    } 

ich die gleiche Methode für beide verwendet, aber die Bilder in meinem recyclerView der Größe verändert werden, aber sie don Größe nicht in meinem viewPager.

Answer 1

ich es von einer alten Frage bekam vor einer Zeit, steckte es in Ihrem onBindViewHolder

BitmapFactory.Options options = new BitmapFactory.Options(); 
final Bitmap originalImage = BitmapFactory.decodeByteArray(imagem, 0, imagem.length); 
options.outHeight = originalImage.getHeight(); 
options.outWidth = originalImage.getWidth(); 
options.inSampleSize = calculateInSampleSize(options, 100, 100); 

Aufruf dieser Methode die Optionen (siehe oben), die gewünschte Breite und Höhe vorbei.

public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { 
     // Raw height and width of image 
     final int height = options.outHeight; 
     final int width = options.outWidth; 
     int inSampleSize = 1; 

     if (height > reqHeight || width > reqWidth) { 
      final int halfHeight = height/2; 
      final int halfWidth = width/2; 

      // Calculate the largest inSampleSize value that is a power of 2 and keeps 
      // both height and width larger than the requested height and width. 
      while ((halfHeight/inSampleSize) >= reqHeight && (halfWidth/inSampleSize) >= reqWidth) { 
       inSampleSize *= 2; 
      } 
     } 
     return inSampleSize; 
    }