Curl page from left to right android

Question 1

I hope this would save someone's time if using an imageloading library with harism page curl.

So, after a lot of research I found that the imageloading library I was using (aquery) has got methods i.e. getCachedImage(String url) , getCachedFile(String url) which doesn't work on the threads and return null if the file is not already cached into any storage (sdcard , cache directory).

The piece of code that was actual did it for me is ,

private class PageProvider implements CurlView.PageProvider {


    @Override
    public int getPageCount() {
        return data1.size()-1;
    } 

    private Bitmap loadBitmap(int width, int height, final int index) throws MalformedURLException, IOException {
        Bitmap b = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);
        b.eraseColor(0xFFFFFFFF);
        Canvas c = new Canvas(b);

        System.out.println(" Index is : "+index+" Curl state : "+CurlActivity.motionDirection);

        if(index==data1.size())
        {
        lastPage=false; 
        }

        else
        {
        lastPage=true;  
        }   

        if(CurlActivity.motionDirection==11)
             {
                y=aq.getCachedImage(data1.get(index));
                f=aq.getCachedFile(data1.get(index+1).replace(".png", ".mp3"));

                if(f!=null)
                {
                FileInputStream inputStream = new FileInputStream(f);

                if(index>0)
                     {  
                        mPlayer.stop();
                        mPlayer.reset();
                     }

                 prepareMediaPlayer(inputStream.getFD());
                 inputStream.close();
               }
            }

            else
            {
                y=aq.getCachedImage(data1.get(index));

                if(jump==0)
                 { 
                  f=aq.getCachedFile(data1.get(index).replace(".png", ".mp3"));
                 }

                else
                 {
                  f=aq.getCachedFile(data1.get(index+1).replace(".png", ".mp3"));
                 }


                if(y!=null&&f!=null)
                {
                FileInputStream inputStream = new FileInputStream(f);

                if(index>0)
                     {  
                        mPlayer.stop();
                        mPlayer.reset();
                     }
                 prepareMediaPlayer(inputStream.getFD());
                 inputStream.close();
                }

                else if(y!=null && f == null)
                {
                    duration=1000;
                }

                else
                {   
                aq.progress(R.id.progress).ajax(data1.get(index+1), Bitmap.class,0, new AjaxCallback<Bitmap>() {
                @Override
                public void callback(final String urlimg, final Bitmap object1, AjaxStatus status) {
                    if(object1!=null)
                           try {
                                y=object1;

                                aq.ajax(data1.get(index).replace(".png", ".mp3"), File.class,0,new AjaxCallback<File>() {
                                    @Override
                                    public void callback(String url, File object, AjaxStatus status) {

                                        System.out.println("url sound downloaded "+url+status.getCode());
                                        try {
                                              if(object!=null||status.getCode()==404)
                                               {
                                                FileInputStream inputStream = new FileInputStream(object);

                                                if(index>0)
                                                 {  
                                                  mPlayer.stop();
                                                  mPlayer.reset();
                                                 }

                                                prepareMediaPlayer(inputStream.getFD());
                                                inputStream.close();
                                               }
                                            }
                                        catch (Exception e) {}
                                   }
                                });     
                        } catch (Exception e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                }
            });
           }    
        }

        d = new BitmapDrawable(getResources(),y);

        if(y!=null)
        {   
        int margin = 7; 
        int border = 3;
        Rect r = new Rect(margin, margin, width - margin, height - margin);

        int imageWidth = r.width() - (border * 2);
        int imageHeight = imageWidth * d.getIntrinsicHeight()
                / d.getIntrinsicWidth();
        if (imageHeight > r.height() - (border * 2)) {
            imageHeight = r.height() - (border * 2);
            imageWidth = imageHeight * d.getIntrinsicWidth()
                    / d.getIntrinsicHeight();
        }

        r.left += ((r.width() - imageWidth) / 2) - border;
        r.right = r.left + imageWidth + border + border;
        r.top += ((r.height() - imageHeight) / 2) - border;
        r.bottom = r.top + imageHeight + border + border;

        Paint p = new Paint();
        p.setColor(0xFFC0C0C0);
        c.drawRect(r, p);
        r.left += border;
        r.right -= border;
        r.top += border;
        r.bottom -= border;

        d.setBounds(r);
        d.draw(c);
        }

        return b;   
    }

    @Override
    public void updatePage(CurlPage page, final int width, final int height, final int index) {
            mPlayer.stop();
            mPlayer.reset();

            Bitmap front = null;

            try {

                front=loadBitmap(width, height,index);

                if(front!=null)
                {
                page.setTexture(front, CurlPage.SIDE_FRONT);
                page.setColor(Color.rgb(180, 180, 180), CurlPage.SIDE_BACK);
                }

            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }

      } 
}

Question 2

hm... curlpage by harism has behavior to load image more than one when flipping page, example if you flipping page from 0 to 1 curlpage will load image for page 1 and page 2, and if you flip to page 5 curlpage will load image for page 5 and 6, but if you flipping back to page 4, curlpage will load image for page 4, page 3 and page 2.

loadImage() triggered when onTouch ACTION.MOVE, so you have to prepared the image before you move/flip the page or your page will be get null, you have to load manually by calling updatePage() method in CurlView class.

for getCurrentIndex() you can check it in method startCurl() and updatePage() in CurlView class.