Bitmap on sdcard & decodestream

gh3 · by **gh3** » Tue Sep 30, 2008 1:01 am

Hi,

thanks first of all to plusminus for the gr8 work with this forum and his very good guides, why am i writing here so?

Easy i was playing with a little app i'm developing but i've just found a little problem... let's explain me it...

I created a sdcard and inside it I placed some jpg files.

So my data path is something like:

/sdcard/app/img/1.jpg
/sdcard/app/img/2.jpg
/sdcard/app/img/3.jpg
/sdcard/app/img/4.jpg
[...]
/sdcard/app/img/n.jpg

Now I want to create a gallery app to show out these files, I looked at demo srcs by android sdk, but they always use imgs from resources...

I decided to try using Bitmapfactory.decodeFile and also Bitmapfactory.decodestream but both seems not to work fine returning a NullPointerException

Here you are a little snippet of my app:

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Using java Syntax Highlighting

 
for(int i=0;i<imgsTokens.length;i++)
 
                        {       
 
                                Log.d(""+i,"/sdcard/app/img/"+imgsTokens[i]+".jpg");
 
                                try
 
                                {
 
                                        FileInputStream is = new FileInputStream(new File("/sdcard/app/img/"+imgsTokens[i]+".jpg")); 
 
                            BufferedInputStream bis = new BufferedInputStream(is); 
 
                            photos[i] = BitmapFactory.decodeStream(is); 
 
                            bis.close(); 
 
                            is.close(); 
 
                                        //photos[i] = BitmapFactory.decodeFile("/sdcard/app/img/"+imgsTokens[i]+".jpg");
 
                                }
 
                                catch(Exception e)
 
                                {
 
                                        e.printStackTrace();
 
                                }
 
                        }
 
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