Question

我有画廊意图将imege复制到文件夹，以及ListView中显示的所有图像。我的压缩方法中有一个OutOfMemory异常和位图解码 - 修复它的最简单方法是什么？我有recycle（）选项，但没有帮助。

这是我的onActivityResult并压缩：

public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_PICTURE) {
                Uri selectedImageUri = data.getData();
                selectedImagePath = getPath(selectedImageUri);
                //Toast.makeText(this, selectedImagePath, Toast.LENGTH_SHORT).show();
                File sdcard = Environment.getExternalStorageDirectory();
                String path = "MANUAL/workflow/img" + actions.id() + ".png";
                String pathCom = "/MANUAL/workflow/img" + actions.id() + ".png";
                File from = new File(selectedImagePath);
                File to = new File(sdcard, path);
                try {
                    copy(from, to);
                    compress(pathCom);
                } catch (IOException io){}

                //from.renameTo(to); 
            }
        }
    }


    public void compress(String comp) {
        try {

            String path = Environment.getExternalStorageDirectory() + comp;

            BitmapFactory.Options buffer = new BitmapFactory.Options();
            buffer.inSampleSize = 1;
            Bitmap bmp = BitmapFactory.decodeFile(path, buffer);

            if (bmp.getWidth() > width || bmp.getHeight() > height){
                Bitmap resized = Bitmap.createScaledBitmap(bmp,(int)(bmp.getWidth()*0.2), (int)(bmp.getHeight()*0.2), true);
                bmp.recycle();
                FileOutputStream out = new FileOutputStream(path);
                resized.compress(Bitmap.CompressFormat.PNG, 70, out);
                resized.recycle();
                out.flush();
                out.close();
            }

        } catch (Exception e) {
            e.printStackTrace();
            Log.e("saveBitmap", e.getMessage());
        }
    }

她的意图是：

switch (item.getItemId()) {
            case R.id.gallery:
                // in onCreate or any event where your want the user to
                // select a file
                Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);

Answer 1

你的inSampleSize设置为1，这意味着它基本上没有被使用.. 1 =没有下采样2将是1 / 2,1 / 1 1/4。

也请查看此http://developer.android.com/training/displaying-bitmaps/load-bitmap.html

希望有所帮助。

如果这样做的目的只是简单地创建一个缩放的图像文件，也许该任务应该在它自己的线程上使用AsyncTask来处理该图像的大小调整

onActivityResult内存不足

1 个答案: