获取MediaPlayer的状态
在我的应用程序中，我从用户获取多个路径（1 个到图像、1 个到音轨、1 个到视频）并将它们存储在数据库中。当另一个活动开始查看文件时，不能保证文件仍位于这些路径中，甚至根本不存在，因为用户选择了它们并且可能已删除/移动了它们。因此，我需要能够检查这些路径上的文件是否有效。 我最初的计划是简单地捕获构造+设置每个对象时抛出的任何异常。 这是我用来查看每个异常的内容：
Image - a Drawable
Audio - a MediaPlayer
Video - a VideoView
我会通过向用户显示一个对话框来处理每个异常 但是，没有抛出任何异常，而是收到不同的错误消息
VideoView 显示自己的对话框，显示“抱歉，该视频无法播放”
其他人转到 LogCat：
04-10 23:34:43.174: ERROR/PlayerDriver(30): Command PLAYER_SET_DATA_SOURCE completed with an error or info PVMFErrNotSupported
04-10 23:34:43.174: ERROR/MediaPlayer(271): error (1, -4)
04-10 23:34:43.365: ERROR/MediaPlayer(271): Error (1,-4)
关于如何获取 MediaPlayer 和 VideoView 或其他一些状态的任何想法检查路径的方法？
谢谢！
In my application I get multiple paths from the user (1 to an image, 1 to an audio track, and 1 to a video) and store them in a database. When another Activity is started to view the files, there isn't a guarantee the files will still be at those paths or even exist at all, since the user chose them and may have deleted/moved them. Therefore, I need to be able to check if the files at those paths are valid.
My original plan was to simply catch any Exceptions thrown when constructing + setting up each object.
Here's what I'm using to view each:
Image - a Drawable
Audio - a MediaPlayer
Video - a VideoView
I would have handled each Exception by showing a dialog to the user
However, no Exceptions are thrown and instead I get different error messages
The VideoView shows its own dialog saying "Sorry, this video cannot be played"
The others go to LogCat:
04-10 23:34:43.174: ERROR/PlayerDriver(30): Command PLAYER_SET_DATA_SOURCE completed with an error or info PVMFErrNotSupported
04-10 23:34:43.174: ERROR/MediaPlayer(271): error (1, -4)
04-10 23:34:43.365: ERROR/MediaPlayer(271): Error (1,-4)
Any thoughts on how to get the state of MediaPlayer and VideoView or some other way to check the paths?
Thanks!
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您可以为
VideoView和MediaPlayer设置OnErrorListener。如果发生错误 - 您的侦听器将被调用。此外，您还可以使用MediaPlayer或使用VideoView检查音频和视频，因为它包含MediaPlayer来处理这两种情况。顺便说一句，我认为
VideoView的监听器实际上是在VideoView内的MediaPlayer对象中设置的You can set
OnErrorListenerforVideoViewand forMediaPlayer. If an error occurs - your listener will be called. Also, you can check both audio and video usingMediaPlayeror usingVideoViewsince it containsMediaPlayerto handle both anyway.BTW, I think that the listener of
VideoViewis actually set in theMediaPlayerobject within theVideoView