Android 在 MediaPlayer 中将数据源设置为原始 ID
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Setting data source to an raw ID in MediaPlayer
提问by russoue
In MediaPlayer.create method an id to a Raw file can be used but how to use that in setDataSource method?
在 MediaPlayer.create 方法中，可以使用原始文件的 id 但如何在 setDataSource 方法中使用它？
采纳答案by stealthcopter
You can load the raw audio into an input stream and load it into a MediaPlayer as you would a normal stream:
您可以将原始音频加载到输入流中，然后将其加载到 MediaPlayer 中，就像加载普通流一样：
InputStream ins = getResources().openRawResource(R.raw.example);
and then follow a streaming tutorial like pocketjourney
然后按照像口袋旅行这样的流媒体教程
But this is overly complicated as you can just call
但这太复杂了，因为你可以打电话
mp = MediaPlayer.create(counterstrikesb.this, R.raw.example);
回答by Chris.Zou
Refer to the source android.media.MediaPlayer
AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid);
if (afd == null) return;
mediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
afd.close();
You may want to add try-catch to the block.
您可能希望将 try-catch 添加到块中。
回答by Dheeraj Bhaskar
paraphrasing @Kartik's answer here Get URI of .mp3 file stored in res/raw folder in android
在此处解释@Kartik 的回答Get URI of .mp3 file stored in res/raw folder in android
If you want to get any resource URI then there are two ways :
如果您想获取任何资源 URI，则有两种方法：
- Using Resource Name
- 使用资源名称
Syntax : android.resource://[package]/[res type]/[res name]
Example : Uri.parse("android.resource://com.my.package/drawable/icon");
语法：android.resource://[package]/[res type]/[res name]
示例：Uri.parse("android.resource://com.my.package/drawable/icon");
- Using Resource Id
- 使用资源 ID
Syntax : android.resource://[package]/[resource_id]
Example : Uri.parse("android.resource://com.my.package/" + R.drawable.icon);
语法：android.resource://[package]/[resource_id]
示例：Uri.parse("android.resource://com.my.package/" + R.drawable.icon);
These were the examples to get the URI of any image file stored in drawable folder. Similarly you can get URIs of res/raw folder.
这些是获取存储在 drawable 文件夹中的任何图像文件的 URI 的示例。同样，您可以获得 res/raw 文件夹的 URI。
IMO the second way would be preferred as renaming the resource etc can be easily refactored.
IMO 首选第二种方式，因为重命名资源等可以轻松重构。
Set the data source like so:
像这样设置数据源：
CONSTANTS.RES_PREFIX = "android.resource://com.my.package/"
mp.setDataSource(getApplicationContext(), Uri.parse(CONSTANTS.RES_PREFIX + R.raw.id));
mp.setDataSource(getApplicationContext(), Uri.parse(CONSTANTS.RES_PREFIX + R.raw.id));
