android11升级分区存储之后保存视频文件

墨蓝 2023-01-18 04:18 167阅读 0赞

忽然发现原来的测试程序中直接通过FileOutputStream获取FileDescriptor的代码不能用了：

String date = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
                String name = "/sdcard/DCIM/Camera/VID_" + date + ".mp4";
                try {
                    FileOutputStream out = new FileOutputStream(name);
                    FileDescriptor fd = out.getFD();
                    saveVideo(fd);
                } catch (IOException e) {
                    e.printStackTrace();
                }

需要修改为通过MediaStore才能创建/sdcard/DCIM/Camera下的文件：

String date = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
            String name = "VID_" + date + ".mp4";
            ContentValues values = new ContentValues();
            values.put(MediaStore.Video.Media.DISPLAY_NAME,  name);
            values.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                values.put(MediaStore.Video.Media.RELATIVE_PATH, "DCIM/Camera");
            } else {
                values.put(MediaStore.Video.Media.DATA, "/sdcard/DCIM/Camera/" + name);
            }
            Uri videoUri = getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);
            ParcelFileDescriptor pfd = getContentResolver().openFileDescriptor(videoUri, "rw", null);
            saveVideo(pfd.getFileDescriptor());

具体Android对于权限的升级可以参考：访问共享存储空间中的媒体文件

[https://developer.android.google.cn/training/data-storage/shared/media][https_developer.android.google.cn_training_data-storage_shared_media]

[https_developer.android.google.cn_training_data-storage_shared_media]: https://developer.android.google.cn/training/data-storage/shared/media