适配 Android10 内部存储图片显示问题

外部存储将被废弃：filePath:/storage/emulated/0/com.aaa.bbb/图片
对应方法：Environment.getExternalStorageDirectory()
官方接口说明：https://developer.android.google.cn/reference/kotlin/android/os/Environment?hl=en#getexternalstoragedirectory
官方Android 10 隐私说明：https://developer.android.google.cn/about/versions/10/privacy/changes

期望路径文件路径：filePath:/storage/emulated/0/Android/data/com.aa a.bbb/files/Pictures/图片
对应方法context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);

引发问题：在相册无法显示已保存的图片
解决方案：可根据自己的情况做适配

 /**
     * 将bitmap存成文件
     *
     * @param context
     * @param bitmap
     * @param imageName
     */
    public static String saveBitmap(Context context, Bitmap bitmap, String imageName) {

        FileOutputStream fos = null;
        OutputStream os = null;
        BufferedInputStream inputStream = null;
        File imageFile = null;
        try {
            //生成路径
//            File filePath = new File(Environment.getExternalStorageDirectory().getAbsolutePath(),APP_FOLDER_PHOTO);
            File filePath = new File(StringUtils.getString(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES), "/", context.getPackageName(), "/photo/"));
            Log.e("aaa->"," filePath:" + filePath.getPath() + " fileAbsolutePath:" + filePath.getAbsolutePath());
            if (!filePath.exists()) {
                boolean is = filePath.mkdirs();
                Log.e("aaa->","is: " + is);
            }

            //获取文件
            imageFile = new File(filePath, imageName);
            fos = new FileOutputStream(imageFile);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
            fos.flush();

            ContentValues values = new ContentValues();
            values.put(MediaStore.Images.Media.DESCRIPTION, "This is an image");
            values.put(MediaStore.Images.Media.DISPLAY_NAME, imageName);
            values.put(MediaStore.Images.Media.MIME_TYPE, "image/png");
            values.put(MediaStore.Images.Media.TITLE, "Image.png");
            values.put(MediaStore.Images.Media.RELATIVE_PATH, "Pictures/");
            Uri external = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            ContentResolver resolver = context.getContentResolver();
            Uri insertUri = resolver.insert(external, values);
            
            inputStream = new BufferedInputStream(new FileInputStream(imageFile));
            if (insertUri != null) {
                os = resolver.openOutputStream(insertUri);
            }
            if (os != null) {
                byte[] buffer = new byte[1024 * 4];
                int len;
                while ((len = inputStream.read(buffer)) != -1) {
                    os.write(buffer, 0, len);
                }
                os.flush();
            }

            //通知系统相册刷新
            context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
                    Uri.fromFile(imageFile)));
            return imageFile.getPath();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            try {
                fos.close();
                os.close();
                inputStream.close();
                imageFile.delete();// 这里删除源文件不存在 但相册可见
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

参考：https://www.okcode.net/article/91099