安卓：保存android.net.Uri对象数据库 [英] Android: Save android.net.Uri object to Database

问题描述

我想要做的就是从用户选择的铃声，设置AlarmManager报警时闹钟响起来播放铃声。但我需要保存铃声在数据库中，所以我可以手机重启后所有报警复位。

What i m trying to do is get the selected ringtone from the user, set an AlarmManager alarm to play that ringtone when the alarm goes Off. but I need to save the ringtone in the database so I can reset all the alarms after phone reboot.

我的问题是什么是铃声乌里保存到数据库后检索的最佳方式？

my question is what is the best way to save the ringtone Uri to the database to retrieve later?

我试过如下：

1）保存在数据库铃声标题，然后检索它并将其附加到一个默认铃声路径。但问题是，铃声可能会从不同的位置加载
2）存储URI方案，方案spefici部分和碎片，然后调用Uri.fromParts创建URI。
3）创建一个InputStream，字节[]从乌里阵列并将其保存为一个blob，然后回读，并把结果以乌里

1) save the ringtone title in the DB and then retrieve it and append it to a default ringtone path. but the issue, is that the ringtone might be loaded from a different location 2) Storing the uri scheme, scheme spefici part and fragment and then call Uri.fromParts to create the Uri. 3) create an inputStream, byte[] array from the Uri and saving it as a blob and then reading it back and cast the result to Uri

没有这些作品。

您的帮助是多少AP preciated。

Your help is much appreciated.

推荐答案

存放URI在数据库中的字符串，然后再加载它。

Store the URI as a string in the database and then load it later.

// This will get the uri in a string format
String s = mUri.toString();

当你从数据库中检索该字符串，重建URI是这样的：

When you retrieve the string from the database, rebuild the URI like this:

// This will decode the string into a URI
Uri mUri = Uri.parse(s);

希望有所帮助。祝你好运！

Hope that helps. Good luck!

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