在Android的CSV文件位置 [英] Locations of CSV files in Android

问题描述

我无法从.CSV文件中读取在Android应用程序。主要是FileNotFound错误。哪里将是把文件最容易的地方，会是什么地址给它。我一直在瞎搞有一些不同的地方，但没有运气。

I'm having trouble reading in from a .CSV file in an android app. Mainly a "FileNotFound" error. Where would be the easiest place to put the file, and what would be the address to it. I have been messing around with a few different places but have had no luck.

任何人都可以点我在正确的方向？

Can anyone point me in the right direction?

推荐答案

您可能会想它的可移动存储（SD卡）上。首先你要检查，如果存储可用，然后读/写。

You'll probably want it on the removable storage (SD card). First you'll want to check if the storage is available, then read/write.

该文档有一些注意事项如下：的http://developer.android.com/intl/de/guide/topics/data/data-storage.html#filesExternal
（注API级别8的东西在那里，比如 getExternalFilesDir 的，我没有使用过该还，但看起来很方便，如果你能保证> = 8）。

The docs have some notes on this: http://developer.android.com/intl/de/guide/topics/data/data-storage.html#filesExternal (Note the API level 8 stuff there, such as getExternalFilesDir, I haven't used that yet, but looks handy, if you can guarantee >=8.)

您可以检查是否存储有与这样的：

You can check if storage is there with something like:

public boolean isExternalStorageAvail() {
      return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
   }

如果它不存在显示的吐司的（至少）或以其他方式让用户知道。

If it's not there show a Toast (at a minimum) or otherwise let the user know.

然后阅读它像：

File f = new File(Environment.getExternalStorageDirectory() + "/mycsvlocation/myfile.csv");

然后就可以使用常规的文件的方法来检查，如果它的存在，它是可读的，等等，然后使用它。

Then you can use the regular File methods to check if it's there, it's readable, etc., and then use it.

另外请注意，该文档推荐你喜欢的Android /数据文件//在SD卡上使用的位置，这是一个合理的建议，但许多应用程序只使用/ APPNAME /或这样的。

Also note that the docs recommend you use a location on the SD card like "Android/data//files", and that's a reasonable recommendation, but many apps just use "/appname/" or such.

和 - 一件事，你可以通过安装SD卡并创建结构，在复制文件，当然那里的文件。或者，你能做到这一点编程（从您的应用程序）为好，但它听起来像你已经拥有的文件，只是想读它。

And -- one more thing, you can put the file there just by mounting the SD card and creating that structure and copying a file over, of course. Alternatively, you could do that programatically (from your app) as well, but it sounds like you already have the file, and just want to read it.

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