来自Uri的bitmap.compress导致OutOfMemoryError

Question

I am trying to save a bitmap which user selects into my own App path.

Unfortunately, with very big images I get OutOfMemoryError error.

I am using the following code:

private String loadImage (Uri filePath) {
    File fOut = new File(getFilesDir(),"own.jpg");

    inStream = getContentResolver().openInputStream(filePath);
    selectedImage = BitmapFactory.decodeStream(inStream);

    selectedImage.compress(CompressFormat.JPEG, 100, new FileOutputStream(fOut));
}

Is there any way for me to save any image file of any size for an Uri to a file?

*I am not in a position to resize the image eg by using calculateInSampleSize method.

Answer 1

Is there any way for me to save any image file of any size for an Uri to a file?

Since it already is an image, just copy the bytes from the InputStream to the OutputStream :

private void copyInputStreamToFile( InputStream in, File file ) {
    try {
        FileOutputStream out = new FileOutputStream(file);
        byte[] buf = new byte[8192];
        int len;

        while((len=in.read(buf))>0){
            out.write(buf,0,len);
        }

        out.flush();
        out.getFD().sync();
        out.close();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

(adapted from this SO answer )