如何在Android中将可绘制图像从png保存为png？

Question

问题：

我无法将可绘制图像从png保存为android中的png。

码：

 Bitmap b = BitmapFactory.decodeResource(getResources(), 
 eventsList.get(position).getEvent_image());

            Intent share = new Intent(Intent.ACTION_SEND);
            share.setType("image/png");
            ByteArrayOutputStream bytes = new ByteArrayOutputStream();
            b.compress(Bitmap.CompressFormat.PNG, 100, bytes);
            String path = MediaStore.Images.Media.insertImage(getActivity().getContentResolver(),
                    b, "imagePath", null);
            if (!SampleUtil.isNullOrEmpty(path)) {
                /*Uri imageUri = Uri.parse(path);*/
                selectedImage = path;
            }

Answer 1

尝试这个

步骤1.将您的位图放入这样的可绘制对象中

Bitmap bm = BitmapFactory.decodeResource( getResources(), R.drawable.ic_launcher);

步骤2这样保存在您的存储中

 String extStorageDirectory =  Environment.getExternalStorageDirectory().toString();
    File file = new File(extStorageDirectory, "launcher.PNG");
    try {
        FileOutputStream outStream = new FileOutputStream(file);
        bm.compress(Bitmap.CompressFormat.PNG, 100, outStream);
        outStream.flush();
        outStream.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

不要忘记添加 android.permission.WRITE_EXTERNAL_STORAGE permission.