MediaStore.Images.Media.getBitmap and out of memory error

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情歌与酒
情歌与酒 2020-12-08 22:39

My code code is:

public Bitmap loadPhoto(Uri uri) {
    Bitmap scaled = null;
    try {
    scalled = Bitmap.createBitmap(
      MediaStore.Images.Media.getB         


        
4条回答
  •  爱一瞬间的悲伤
    2020-12-08 23:05

    Answer of Praveen Katha will always return null. Here is the updated answer.

    Here is the trick, close the input stream after every use. Input Stream means to be used one time. For more information, please follow this answer

    private 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;
        }
    
        public static Bitmap decodeSampledBitmapFromUri(Context context, Uri imageUri, int reqWidth, int reqHeight) throws FileNotFoundException {
            Bitmap bitmap = null;
            try {
                // Get input stream of the image
                final BitmapFactory.Options options = new BitmapFactory.Options();
                InputStream iStream = context.getContentResolver().openInputStream(imageUri);
    
                // First decode with inJustDecodeBounds=true to check dimensions
                options.inJustDecodeBounds = true;
                BitmapFactory.decodeStream(iStream, null, options);
                if (iStream != null) {
                    iStream.close();
                }
                iStream = context.getContentResolver().openInputStream(imageUri);
    
                // Calculate inSampleSize
                options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
    
                // Decode bitmap with inSampleSize set
                options.inJustDecodeBounds = false;
                bitmap = BitmapFactory.decodeStream(iStream, null, options);
                if (iStream != null) {
                    iStream.close();
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return bitmap;
        }
    

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