Upload Multiple Images To Server -Android

Question

In bello example i am getting arrays as extras and i am i have created one array imagePath[]

which stores paths of all selected images from gridview but my problem is that when i does

it for first image in gridview then it works fine but when i select another image or

public class ShowImages extends Activity {
String title1[],title[],imagePath[];
  Bitmap[] mResources;
                    int cnt=0,j=0;
                    ImageView iv;
                      @Override
                        public void onCreate(Bundle savedInstanceState) {
                            super.onCreate(savedInstanceState);
                            setContentView(R.layout.layoutxml);
                            iv=(ImageView)findViewById(R.id.imageView1);
                            Bundle extras = getIntent().getExtras();
                            title1 = getIntent().getExtras().getStringArray("imageArray");
                            for(int i=0;i<title1.length;i++){
                                if(title1[i] != null){
                                    cnt++;
                                }
                            }

                            imagePath=new String[cnt];
                            for(int i=0;i<title1.length;i++){
                                if(title1[i] != null){
                                    if(j<cnt){
                                    imagePath[j]=title1[i];
                                    j++;
                                    }
                                }
                            }
                       //  Toast.makeText(getApplicationContext(),String.valueOf(cnt), Toast.LENGTH_LONG).show();
                        mResources=new Bitmap[cnt];     

                        try{
                         for(int i=0;i<cnt;i++)
                         {

                             Toast.makeText(getApplicationContext(),imagePath[i], Toast.LENGTH_LONG).show();
                             File imgFile = new  File(imagePath[i]);
                             if(imgFile.exists())
                             {
                                 mResources[i] = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
                                // iv.setImageBitmap(mResources[i]);
                             }
                        }
                        }
                        catch(Exception e){

                        }
                      } 

                }

multiple images in gridview it gives follwing error in logcat

 05-24 17:10:12.616: E/art(3371): Throwing OutOfMemoryError "Failed to    allocate a 63701004 byte allocation with 524288 free bytes and 46MB until OOM"
 05-24 17:10:12.635: E/AndroidRuntime(3371): FATAL EXCEPTION: main
 05-24 17:10:12.635: E/AndroidRuntime(3371): Process: com.customgallery, PID: 3371
 05-24 17:10:12.635: E/AndroidRuntime(3371): java.lang.OutOfMemoryError: Failed to allocate a 63701004 byte allocation with 524288 free bytes and 46MB until OOM

First and important question, why are you creating array of Bitmap? for having more information about my question, check this question: [Strange out of memory issue while loading an image to a Bitmap object](http://stackoverflow.com/questions/477572/strange-out-of-memory-issue-while-loading-an-image-to-a-bitmap-object) — Paresh Mayani, May 24 '15 at 12:06
@PareshMayani i have to do it because in php pages i have to send base64 string ..so i need to convert bitmap array to base64 string array — Darse Rio, May 24 '15 at 12:10
But creating bitmap array would cause the same issue! Rather store the select image URIs/URLs into the string array and convert it into the Bitmap or Base64 while uploading onto the server! — Paresh Mayani, May 24 '15 at 12:48
@PareshMayani if it is possible to convert path of image int Base64 on server(i mean php pages)could u provide me the code — Darse Rio, May 25 '15 at 06:45
That's a noob question, how your server would be able to get actual images from your devices from the image URI? — Paresh Mayani, May 25 '15 at 06:47

score 1 · Answer 1 · answered May 24 '15 at 12:07

Use a scaled down version of image so that you can avoid memory as well as execution time wastage.

public static Bitmap decodeFile(String photoPath){
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(photoPath, options);

        options.inJustDecodeBounds = false;
        options.inDither = false;
        options.inPurgeable = true;
        options.inInputShareable = true;
        options.inPreferQualityOverSpeed = true;
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
        return BitmapFactory.decodeFile(photoPath, options);
}

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;
}

Visit http://developer.android.com/training/displaying-bitmaps/index.html for more information.

score 0 · Answer 2 · answered May 24 '15 at 12:09

0

Use UniversalImageLoader Library to eliminating OutOfMemoryError.

Refer this link https://github.com/nostra13/Android-Universal-Image-Loader

answered May 24 '15 at 12:09

Krishna V

1,801
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Upload Multiple Images To Server -Android

2 Answers2