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位图太大。都试过了

out-of-memory base64 bitmap android

Nishant Garg · 技术社区 · 6 年前

BitmapDrawable drawable = (BitmapDrawable) ProfilePic.getDrawable();
                            yourSelectedIBitmapDrawable drawable = (BitmapDrawable) ProfilePic.getDrawable();
                            yourSelectedImage = drawable.getBitmap();mage = drawable.getBitmap();

将此位图转换为Base64的代码。有没有可能跳过位图直接转换成Base64

private String encodeToBase64(Bitmap image) {

        Bitmap immagex = image;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        immagex.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        byte[] b = baos.toByteArray();
        String imageEncoded = Base64.encodeToString(b,Base64.DEFAULT);
        //Log.e("LOOK", imageEncoded);
        return imageEncoded;
    }

编辑回拨

我很快就会把代码作为答案贴出来。我试过了,甚至一个35Mb的图像本来可以转换成位图没有内存不足的例外。

我的答案是: https://stackoverflow.com/a/52125006/6022584

2 回复 | 直到 6 年前

Bruno 6 年前

您可以尝试用缓冲区读取位图数据。类似于:

private String encodeToBase64(Bitmap image) {
  // get an InputStream
  ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
  image.compress(CompressFormat.PNG, 0, baos); 
  byte[] bitmapdata = baos.toByteArray();
  ByteArrayInputStream bais = new ByteArrayInputStream(bitmapdata);

  // prepare a buffer to read the inputStream
  byte[] buffer = new byte[10 * ONE_KIO];  // ONE_KIO = 1024
  int bytesRead;

  // prepare the stream to encode in Base64
  ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
  Base64OutputStream base64OutputStream = new Base64OutputStream(outputStream, Base64.DEFAULT);

  // read the inputStream
  while ((bytesRead = bais.read(buffer)) != -1) {
    base64OutputStream.write(buffer, 0, bytesRead);
  }
  base64OutputStream.close();

  // get the encoded result string
  return outputStream.toString();
}

Nishant Garg 6 年前

这是我的代码。新问题是我的活动名称

if (requestCode == PICK_IMAGE) {
            if(resultCode == RESULT_OK){
                //isImageFromGallery = true;
                //isImageSelected = true;
                ImagePath = data.getData();

                Picasso.get()
                        .load(ImagePath)
                        .resize(1024,1024)
                        .onlyScaleDown()
                        .centerCrop()
                        .into(picture, new Callback(){
                            @Override
                            public void onSuccess() {
                                BitmapDrawable drawable = (BitmapDrawable) picture.getDrawable();
                                yourSelectedImage = drawable.getBitmap();
                                //isImageSelected = true;

                                Log.d("FileSize",Formatter.formatFileSize(NewIssue.this,
                                        yourSelectedImage.getByteCount()));
                            }

                            @Override
                            public void onError(Exception e) {
                                Toast.makeText(NewIssue.this, "Could Not Load Image", Toast.LENGTH_SHORT).show();
                            }
                        });

            }
        }